Answer:
f(6)=-42
f(0)=0
f(-1)=7
Step-by-step explanation:
since f(x) =-7x
it implies that f(6),f(0) and f(-1) are all equal to f(x)
which is equal to -7x .
so wherever you find x you out it in the
function
It takes 20 days using 12 machines to produce a batch of pens.
due to a fault only 3 machines were used for the first 8 days, all 12 machines were used from day 9 onwards.
how many days in total to produce the batch of pens
It would take a total of 20 days to produce the batch of pens.
Let's calculate the work done by the 3 machines for the first 8 days:
Work done by 3 machines in 8 days = (3/12) * 8 = 2 days' worth of work
The remaining work that needs to be done by all 12 machines is:
Remaining work = 1 - (2/20) = 0.9
Now, we can use the work formula to find the total number of days needed to complete the remaining work with 12 machines:
Total work = 0.9
Work done by 12 machines in one day = 12/20 = 0.6
Total number of days needed = 0.9/0.6 = 1.5
Therefore, the total number of days needed to produce the batch of pens is:
8 (days with 3 machines) + 1.5 (days with 12 machines) = 9.5 days
However, we also need to add the 10.5 days it would take for all 12 machines to complete the batch from the beginning:
10.5 + 9.5 = 20 days
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What is the answer?
Answer: a_<-5 and a_>5
Step-by-step explanation:
because in the first equation the 5 goes first and then the a.The next equation the a is grader than the 5>
A marble is selected from a bag containing eight marbles numbered 1 to 8. The number of the marble selected will be recorded as the outcome. Consider the following events. Event A: The marble selected has an even number.
Event B: The marble selected has a number from 3 to 6.
a) Event "A or B":
b) Event "A and B":
c) The complement of the event A.
A) - Event "A or B" Consists of the Outcomes:
{2, 3, 4, 5, 6, 8}
B) - Event "A or "B" Consists of the Outcomes:
{4, 6}
C) - The "COMPLEMENT of EVENT "A" Consists of the Outcomes:
{1, 3, 5, 7}
Step-by-step explanation:MAKE A PLAN:
List The OUTCOMES for EACH EVENT and their COMBINATIONS:
SOLVE THE PROBLEM:a) - EVENT "A": {2, 4, 6, 8}
EVENT "B": {3, 4, 5, 6}
EVENT "A" or "B": {2, 3, 4, 5, 6, 8}
b) - EVENT "A" or "B": {4, 6}
c) - The COMPLEMENT of the EVENT "A": {1, 3, 5, 7}
Draw the conclusion:A) - Event "A or B" Consists of the Outcomes:
{2, 3, 4, 5, 6, 8}
B) - Event "A or "B" Consists of the Outcomes:
{4, 6}
C) - The "COMPLEMENT of EVENT "A" Consists of the Outcomes:
{1, 3, 5, 7}
I hope this helps!
What is the area of the parallelogram?
Step-by-step explanation:
to find the area of a parallelogram multiply the base by the height. multiply so 8x4= 32. but thats not it, ill come back when i get it or ask a tutor
Answer:
A=bh
Step-by-step explanation:
evaluate 5w - w/x when w = 6 and x = 2.
To solve the exercise you can replace w = 6 and x = 2 in the given expression and then operate:
\(\begin{gathered} 5w-\frac{w}{x} \\ w=6 \\ x=2 \\ \text{ Replacing} \\ 5(6)-\frac{6}{2}=30-3=27 \end{gathered}\)Therefore, the value of the given expression is 27, if w = 6 and x = 2.
Joshua earned $646 for 40 hours. Find the unit rate.
To find the unit rate (amount per hour) you divide the given amount into the given number of hours:
\(\frac{646}{40h}=16.15/h\)Then, the unit rate is $16.15/hour
A crew will arrive in one week and begin filming a city for a movie. The mayor is desperate to clean the city streets before filming begins. Two teams are available, one that requires 700 hours and one that requires 600 hours. If the teams work together, how long will it take to clean all of the streets? Is this enough time before the cameras begin rolling?
Step-by-step explanation:
1 week = 7 days of 24 hours each = 7×24 = 168 hours.
the first team can do 1/700 of the total work per hour.
the second team can do 1/600 if the total work per hour.
if they work together, then 1/700 + 1/600 of the total work can be done per hour.
to add these 2 fractions we need to bring them to the same denominator. and that would be 4200 (LCM of 700 and 600).
1/700 + 1/600 = 6/4200 + 7/4200 = 13/4200
so, together, they can do 13/4200 if the total job in 1 hour.
how many hours will they need together to finish the job ?
well, how often does 13 fit into 4200 (as 4200/4200 is the complete job) ?
4200 / 13 = 323.0769231... hours
so, it will still take a little bit over 323 hours to clean all the streets.
but there are only 168 hours until the film crew starts.
so, no, there is not enough time.
Solve this :9x + 3 < 21
Answer:
Step-by-step explanation:
9x<21-3
9x<18
x<18/9
x<2
Find the vertex of the parabola y = x2 + 5x.
help me please please please
The angle measures for this problem are given as follows:
a = 62º.b = 118º.c = 62º.d = 62º.How to obtain the angle measures?The sum of the measures of the internal angles of a triangle is of 180º.
The triangle in this problem is ABC, hence the measure of a is obtained as follows:
a + 68 + 50 = 180
a = 180 - (68 + 50)
a = 62º.
c and d are corresponding angles to angle a, as they are on the same position relative to parallel lines, hence their measures are given as follows:
c = 62º.d = 62º.Angle b is a corresponding interior angle with angle a, hence they are supplementary and it's measure is given as follows:
a + b = 180
62 + b = 180
b = 118º.
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There are 40 students in a course: 15 freshmen, 8 sophomores, 12 juniors and 5 seniors. One student is selected at random to attend a workshop and report back to the class. What is the probability that the chosen student is a sophomore
Answer:
Step-by-step explanation:
There are 40 students in total, of which 8 are sophomores. So the probability of selecting a sophomore at random is:
P(Sophomore) = Number of Sophomores / Total Number of Students
= 8 / 40
= 0.2 or 20%
Therefore, the probability that the chosen student is a sophomore is 0.2 or 20%.
HELP ASAP PLEASE!!! SHOW WORK Calculate (Round two decimal places for final answer): 3 gallons (gal) = ___________ liters (L).
d+fg=h (solve for the variable “g”)
Answer:
g = h/f - d/f
Step-by-step explanation:
What is the value of x in the triangle
Answer:
\(5\sqrt{3}\)
Step-by-step explanation:
the sides of a 30 60 90 triangle are x, 2x, and \(x\sqrt{3}\), with \(x\sqrt{3}\) being opposite to the 60 degree angle, and x being adjacent to the 60 degree angle. If \(x\sqrt{3}\) = 15 (as given from the image), you can calculate x to be \(5\sqrt{3}\).
The question is in the image below!
Answer:
C) 26π
Step-by-step explanation:
169π, radius = √169 = 13
diameter = 13 x 2 = 26
circumference = 26π
Which expression shows how 5 +25 can be written using the distributive property?
5 (1 + 5)
5 x 5
25 +5
15 (3 + 10)
I WILL GIVE BRAINLEY
Answer:
5 (1 + 5)
Step-by-step explanation:
It would be this because the 5 would distribute itself multiplying into the 1 and other 5 equaling 5 + 25 and it is in the distributive property.
The center of a circle is at (-2,-7) and its radius is 6. What is the equation of the circle?
(X+2)^2 +(Y+7)^2 =36
Since the centre of the circle is (-2;-7), we equate the variable to its coordinate:
X=-2
Y=-7
now we bring the coordinate over to the left side which changes its sign.
X+2=0
Y+7=0
That explains the :
(X+2)^2 +(Y+7)^2
Now for the R.
its given that the radius is 6 and since the standard form for the equation of a circle requires r^2.
we simply square 6.
6^2=36.
Answer: (x+2)^2+(y+7)^2=36
Step-by-step explanation:
To write an equation for a circle when you know
the radius is R
the center is at (A, B), remember that the standard form of the equation of the circle is:
Just plug those values into this equation:
(x-A)^2+(y-B)^2=R^2
You will end up with this equation
(x+2)^2+(y+7)^2=36
Solve x for the diagram below.
Answer:
20°
Step-by-step explanation:
These angles add up to 90° so we have:
x + 2x + x + 10 = 90
4x + 10 = 90
4x = 80
x = 20°
Kristen has 8 gallons of water. Chris has 28 quarts of water. How many more pints of water does Kristen have than Chris?
Kristen have 8 cups more than Chris.
We will use unitary method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.
Given that Kristen has 8 gallons of water. Chris has 28 quarts of water.
We need to convert gallons and quarts to cups and subtract the values
1 gallon = 16 cups
7 gallons = 7 x 16 = 112 cups
1 quart = 4 cups
Therefore,
26 quarts = 26 x 4 = 104 cups
112 - 104 = 8 cups
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write and solve an inequality to find the possible values of x
The inequality that represents the value of x is (b) x > 80
Writing and solving the inequality for xfrom the question, we have the following parameters that can be used in our computation:
The figure
The general rule is that
The larger the side length, the larger the angle opposite it
using the above as a guide, we have the following:
1/8x > 10
So, we have
x > 80
Hence, the inequality is x > 80
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CHALLENGE Anna has 15 stickers. Rosa has 3 times as many stickers as Anna. Dawn has 3 times as many stickers as Rosa. Sara has 17 fewer stickers than Dawn. a How many stickers does Rosa have? Show your work.
Answer
Rosa has 45 stickers.
Explanation
Anna is said to have 15 stickers.
Rosa is said to have 3 times as many stickers as Anna.
Rosa's stickers = 3 × 15 = 45 stickers.
Dawn has 3 times as many stickers as Rosa.
Dawn's stickers = 3 × 45 = 135 stickers.
Sara has 17 fewer stickers as Dawn.
Sara's stickers = 135 - 17 = 118 stickers.
Hope this Helps!!!
Use the appropriate form of the percentage formula What percent of 14.9 is 14.4? Round to the nearest hundredth of a percent.
we know 14.9 is the whole or 100%, so what is 14.4 off of it in percentage?
\(\begin{array}{ccll} amount&\%\\ \cline{1-2} 14.9&100\\ 14.4&x \end{array}\implies \cfrac{14.9}{14.4}=\cfrac{100}{x}\implies 14.9x=1440 \\\\\\ x = \cfrac{1440}{14.9}\implies x \approx 95.64\)
The sum of four times a number and five is twenty-one. Find the number
Write out the equation:
4x + 5 = 21
Subtract 5 from both sides:
4x = 16
Divide both sides by 4:
X = 4
The number is 4
A bag of baseballs costs $12. There are 15 balls in the bag. Another bag of baseballs costs $15 for 20 balls. Which bag prices individual baseballs lower?
Answer:
Step-by-step explanation:
For the first bag:
Price of the bag = $12
Number of balls in the bag = 15
Price per ball = Price of the bag / Number of balls
Price per ball for the first bag = $12 / 15 = $0.8
For the second bag:
Price of the bag = $15
Number of balls in the bag = 20
Price per ball = Price of the bag / Number of balls
Price per ball for the second bag = $15 / 20 = $0.75
Comparing the prices per ball, we find that the second bag has a lower price per baseball. Therefore, the second bag offers a better price for individual baseballs compared to the first bag.
Answer:
Step-by-step explanation:
To find out which bag prices individual baseballs lower, we can divide the total cost of each bag by the number of balls in the bag. This will give us the price per ball for each bag.
For the first bag, the price per ball is $12 / 15 = $0.80.
For the second bag, the price per ball is $15 / 20 = $0.75.
Therefore, the second bag prices individual baseballs lower.
Need the correct answers for this. Can you help me?
The length of PQ is 3√5 and its slope is -2
The length of SR is 3√5 and its slope is -2
The length of SP is 5√2 and its slope is -7
The length of RQ is 5√2 and its slope is -1
So PQ ≅ SR and SP ≅ RQ. By the Perpendicular Bisector theorem, adjacent sides are perpendicular. By the selection of side, ∠PSR, ∠SRQ, ∠RQP and ∠QPS are right angles. So, the quadrilateral is a rectangle.
Understanding QuadrilateralTo find the lengths and slopes of the sides of the quadrilateral PQRS, we apply the distance formula:
D = \(\sqrt{(x_{2} - x_{1})^2 + (y_{2} - y_{1})^2}\)
and the slope formula:
m = \(\frac{y_{2} - y_{1}}{x_{2} - x_{1}}\)
1. Length PQ:
Using the distance formula, the length PQ can be calculated as follows:
PQ = \(\sqrt{(x_{2} - x_{1})^2 + (y_{2} - y_{1})^2}\)
= √((3 - 0)² + (-4 - 2)²)
= √(3² + (-6)²)
= √(9 + 36)
= √45
= 3√5
2. Length SR:
Using the distance formula, the length SR can be calculated as follows:
SR = \(\sqrt{(x_{2} - x_{1})^2 + (y_{2} - y_{1})^2}\)
= √((1 - (-2))² + (-5 - 1)²)
= √((1 + 2)² + (-6)²)
= √(3² + 36)
= √(9 + 36)
= √45
= 3√5
3. Length SP:
Using the distance formula, the length SP can be calculated as follows:
SP = \(\sqrt{(x_{2} - x_{1})^2 + (y_{2} - y_{1})^2}\)
= √((1 - 0)² + (-5 - 2)²)
= √(1² + (-7)²)
= √(1 + 49)
= √50
= 5√2
4. Length RQ:
Using the distance formula, the length RQ can be calculated as follows:
RQ = \(\sqrt{(x_{2} - x_{1})^2 + (y_{2} - y_{1})^2}\)
= √((-2 - 3)² + (1 - (-4))²)
= √((-2 - 3)² + (1 + 4)²)
= √((-5)² + 5²)
= √(25 + 25)
= √50
= 5√2
Now, let's calculate the slopes of the sides:
1. Slope PQ:
The slope of PQ can be calculated using the slope formula:
m = \(\frac{y_{2} - y_{1}}{x_{2} - x_{1}}\)
= (-4 - 2) / (3 - 0)
= -6 / 3
= -2
2. Slope SR:
The slope of SR can be calculated using the slope formula:
m = \(\frac{y_{2} - y_{1}}{x_{2} - x_{1}}\)
= (-5 - 1) / (1 - (-2))
= -6 / 3
= -2
3. Slope SP:
The slope of SP can be calculated using the slope formula:
m =\(\frac{y_{2} - y_{1}}{x_{2} - x_{1}}\)
= (-5 - 2) / (1 - 0)
= -7 / 1
= -7
4. Slope RQ:
The slope of RQ can be calculated using the slope formula:
m = \(\frac{y_{2} - y_{1}}{x_{2} - x_{1}}\)
= (1 - (-4)) / (-2 - 3)
= 5 / (-5)
= -1
Therefore, the lengths and slopes of the sides of the quadrilateral PQRS are:
Length PQ: 3√5
Length SR: 3√5
Length SP: 5√2
Length RQ: 5√2
Slope PQ: -2
Slope SR: -2
Slope SP: -7
Slope RQ: -1
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NO LINKS!!! URGENT HELP PLEASE!!!
Solve ΔABC using the Law of Sines
1. A = 29°, C = 63°, c = 24
2. A = 72°, B= 35°, c = 21
Answer:
1) B = 88°, a = 13.1, b = 26.9
2) C = 73°, a = 20.9, b = 12.6
Step-by-step explanation:
To solve for the remaining sides and angles of the triangle, given two sides and an adjacent angle, use the Law of Sines formula:
\(\boxed{\begin{minipage}{7.6 cm}\underline{Law of Sines} \\\\$\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}$\\\\\\where:\\ \phantom{ww}$\bullet$ $A, B$ and $C$ are the angles. \\ \phantom{ww}$\bullet$ $a, b$ and $c$ are the sides opposite the angles.\\\end{minipage}}\)
Question 1Given values:
A = 29°C = 63°c = 24As the interior angles of a triangle sum to 180°:
\(\implies A+B+C=180^{\circ}\)
\(\implies B=180^{\circ}-A-C\)
\(\implies B=180^{\circ}-29^{\circ}-63^{\circ}\)
\(\implies B=88^{\circ}\)
Substitute the values of A, B, C and c into the Law of Sines formula and solve for sides a and b:
\(\implies \dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}\)
\(\implies \dfrac{a}{\sin 29^{\circ}}=\dfrac{b}{\sin 88^{\circ}}=\dfrac{24}{\sin 63^{\circ}}\)
Solve for a:
\(\implies \dfrac{a}{\sin 29^{\circ}}=\dfrac{24}{\sin 63^{\circ}}\)
\(\implies a=\dfrac{24\sin 29^{\circ}}{\sin 63^{\circ}}\)
\(\implies a=13.0876493...\)
\(\implies a=13.1\)
Solve for b:
\(\implies \dfrac{b}{\sin 88^{\circ}}=\dfrac{24}{\sin 63^{\circ}}\)
\(\implies b=\dfrac{24\sin 88^{\circ}}{\sin 63^{\circ}}\)
\(\implies b=26.9194211...\)
\(\implies b=26.9\)
\(\hrulefill\)
Question 2Given values:
A = 72°B = 35°c = 21As the interior angles of a triangle sum to 180°:
\(\implies A+B+C=180^{\circ}\)
\(\implies C=180^{\circ}-A-B\)
\(\implies C=180^{\circ}-72^{\circ}-35^{\circ}\)
\(\implies C=73^{\circ}\)
Substitute the values of A, B, C and c into the Law of Sines formula and solve for sides a and b:
\(\implies \dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}\)
\(\implies \dfrac{a}{\sin 72^{\circ}}=\dfrac{b}{\sin 35^{\circ}}=\dfrac{21}{\sin 73^{\circ}}\)
Solve for a:
\(\implies \dfrac{a}{\sin 72^{\circ}}=\dfrac{21}{\sin 73^{\circ}}\)
\(\implies a=\dfrac{21\sin 72^{\circ}}{\sin 73^{\circ}}\)
\(\implies a=20.8847511...\)
\(\implies a=20.9\)
Solve for b:
\(\implies \dfrac{b}{\sin 35^{\circ}}=\dfrac{21}{\sin 73^{\circ}}\)
\(\implies b=\dfrac{21\sin 35^{\circ}}{\sin 73^{\circ}}\)
\(\implies b=12.5954671...\)
\(\implies b=12.6\)
lan is bisecting line segment CD. First, lan places the compass on point D and opens it to a width larger than half of the segment. What is the next step?
A. Create a point that is not on segment CD.
B. Swing an arc on both sides of line segment CD.
C. Draw a ray from point D of the segment CD.
D. Place the compass on a point that is not on segment CD
To Bisect the line segment CD, the next step is option B. Swing an arc on both sides of line segment CD.
Bisection is a process of dividing a given line, or angle into two equal parts or measures respectively. This could either be a line bisector or an angle bisector as the case may be.
Thus to bisect the line CD, the following steps are required:
Place the compass on point D and open to a width greater than half of the segment.Describe an arc above and below the line CD.With the same radius and point C, describe two arcs to intersect the previous arcs.Draw a straight line through the points of intersections of the arcs. This the bisector of line CD.The next step for Ian is to swing an arc on both sides of line segment CD i.e option B.
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Answer:
b
Step-by-step explanation:
took test
A
,
B
and
C
form a triangle where
∠
B
A
C
=
90
∘
.
A
B
=
12.1
mm and
B
C
=
19.7
mm.
Find the length of
A
C
, giving your answer rounded to 1 decimal place.
Answer:
15.5 mmStep-by-step explanation:
Given:
ΔABC with ∠BAC = 90°, AB = 12.1 mm, BC = 19.7 mmSince BC is opposite to right angle, AC is the missing leg.
Find AC using Pythagorean:
\(AC = \sqrt{BC^2-AB^2} =\sqrt{19.7^2-12.1^2} =\sqrt{241.68} =15.5 mm\)√-25/√9 please solve
Step-by-step explanation:
The expression you provided involves taking the square root of a negative number, which results in an imaginary number. In standard real number arithmetic, the square root of a negative number is undefined. However, in the realm of complex numbers, we can define a square root of negative numbers using the imaginary unit "i," where i is defined as the square root of -1.
Let's break down the expression step by step:
√(-25) / √9
The square root of -25 can be written as √(-1 * 25), which can further be simplified as √(-1) * √25.
√(-1) is equal to "i," and the square root of 25 is 5.
So, the expression becomes:
i * 5 / √9
The square root of 9 is 3.
Now, we can simplify further:
i * 5 / 3
Thus, the simplified expression is (5i) / 3, where "i" represents the imaginary unit.
Fully simplify. -15xy(15x^5y^3) −15xy(15x 5 y 3 )
Answer:
if I'm reading this correctly because it looks like you accidentally typed it twice. I also took "^" as multiplication your answer would be
-3375x2y2
(x and y raised to the second power)