Answer:
Step-by-step explanation:
true
1. number of scarves
2. price per scarf
Step-by-step explanation:
Calculate the average for the following 25.2, 25.3, 25.8, & 25.1 =
Answer:
25.35
Step-by-step explanation:
25.2+25.3+25.8+25.1. /. 4
= 25.35
Help me with this question pleaseee
triangle PQR was rotated and then dilated by a scale factor of 9 to create P”Q”R”. Which statement explains why triangle PQR is similar to triangle P”Q”R”?
Triangle PQR is similar to triangle P”Q”R” because the rotation and dilation transformations preserve the shape and angles of the original triangle.
The rotation simply changes the orientation of the triangle, but the angles and side lengths remain the same. The dilation scales all the side lengths by a factor of 9, which preserves the ratios of the side lengths and the angles of the original triangle.
Since similarity of two triangles is defined as the correspondence between the angles of one triangle to the angles of another triangle, and the ratio of the lengths of the corresponding sides is constant, PQR is similar to P”Q”R” because the angles of PQR and P”Q”R” are congruent, and the ratio of the lengths of the corresponding sides is the same. This means that PQR and P”Q”R” have the same shape and are therefore similar.
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1
60°
6
7
4
LO
40°
2
3
30%
20°
Jo measures of a triangle.
its angles.
Help plzz
Answer:
1=50
2=90
3=60
4=60
5=60
6=60
7= 120
Step-by-step explanation:
Point C has a coordinate of (-4, -6) and point D has a coordinate of (1, -6), how far are they apart?
The distance between points C and D is given as follows:
5 units.
How to calculate the distance between two points?Suppose that we have two points of the coordinate plane, and the ordered pairs have coordinates \((x_1,y_1)\) and \((x_2,y_2)\).
The shortest distance between them is given by the equation presented as follows, derived from the Pythagorean Theorem:
\(D = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\)
The coordinates for this problem are given as follows:
(-4, -6) and (1, -6).
Hence the distance is given as follows:
\(D = \sqrt{(-4 - 1)^2 + (-6 - (-6))^2}\)
D = 5 units.
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How do you convert 72 kilograms to pounds? show the mathmatical steps
Solve triangles: angle bisector theorem
DAC = BAD.
What is the length of CD?
Round to one decimal place.
Answer:
Step-by-step explanation:
CD/6.5 = 2.6/4.9 This is the result of the angle bisector theorem.
The theorem basically says that the side opposite the angle being bisected is divided the ratio of the sides enclosing the angle.
Multiply both sides of the proportion by 6.5
CD = 2.6 * 6.5 / 4.9
CD = 3.4489
CD = 3.4 rounded.
Find the unit rate (constant of proportionality) of the distance traveled.
Number of hours
0.25 1.5 2.5 3
Distance traveled (km) 3 18 30 36
Answer:
12.
Step-by-step explanation:
if to re-write the given condition, then
\(\frac{3}{0.25} =\frac{18}{1.5} =\frac{30}{2.5} =\frac{36}{3} ;\)
it is clear, the required constant is 12 (12 per hour).
How does an airbag help protect a passenger in a car following a car accident?
It shortens the passenger’s stopping time, and this decreases the force.
It shortens the passenger’s stopping time, and this increases the force.
It increases the passenger’s stopping time, and this decreases the force.
It increases the passenger’s stopping time, and this increases the force.
Answer:
I would say "It increases the passenger’s stopping time, and this decreases the force"
Step-by-step explanation:
Im not sure so please dont get mad at me!
Please consider brainliest! Have a good day! Bye<3
Answer:
(c)
Step-by-step explanation:
took the test
Let log, 4= 3; log, C = 2; log, D= 5 Ac? Do log What is the value of O A. -11 O B.-15,378 O c. 49 D. 2
Given:
\((x+2)^2+(y-3)^2=9\)Circle equation is
\((x-h)^2+(y-k)^2=r^2\)(h,k) be the center of the circle and r be the radius.
\(\text{Center(-}2,3)\text{ and radius 3}\)Option C is the correct answer.
1.4x + 3.5y
help! 6th grade :)
Answer:
Step-by-step explanation:
Simplifying
1.4x + 3.5y = 0
Solving
1.4x + 3.5y = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-3.5y' to each side of the equation.
1.4x + 3.5y + -3.5y = 0 + -3.5y
Combine like terms: 3.5y + -3.5y = 0.0
1.4x + 0.0 = 0 + -3.5y
1.4x = 0 + -3.5y
Remove the zero:
1.4x = -3.5y
Divide each side by '1.4'.
x = -2.5y
Simplifying
x = -2.5y
Can someone help me with 6-10. Directions: Find the volume of each figure. Round to the nearest hundredth when necessary.
The volumes of the right prism are, respectively:
Case 6: V = 703.72 mm³
Case 7: V = 57905.84 mm³
Case 8: V = 3744 ft²
Case 9: V = 475.20 mm³
The volume of the sphere is:
Case 10: V = 18816.57 cm³
How to determine the volume of a right prism
In this problem we find four cases of right prisms, whose volumes must be computed. This can be done with the help of following formulas:
Volume
V = A · h
Area formula - Rectangle
A = w · l
Area formula - Triangle
A = 0.5 · w · l
Area formula - Circle
A = π · r²
In addition, we need to determine the volume of a sphere:
V = (4π / 3) · r³
Where:
A - Base area of the right prism.h - Height of the right prism.w - Widthl - Heightr - RadiusNow we proceed to determine the volume for each case:
Case 6
V = π · (16 mm)² · (14 mm)
V = 703.72 mm³
Case 7
V = π · [(40 mm)² - (32 mm)²] · (32 mm)
V = 57905.84 mm³
Case 8
V = (12 ft) · (8 ft) · (39 ft)
V = 3744 ft²
Case 9
V = 0.5 · (11 mm) · (5.4 mm) · (16 mm)
V = 475.20 mm³
Case 10
V = (4π / 3) · (16.5 cm)³
V = 18816.57 cm³
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Write each equation. "Andre has some toy cars. Cameron has twice as many cars as Andre. Cameron has 28 cars."
e) A student spent 50 minutes doing her homework. She spent m minutes doing Geography. 2m minutes doing Mathematics and the remaining (m + 7) minutes studying History. How many minutes did she spend doing Mathematics?
Answer: 22 minutes
Step-by-step explanation: m + 2m + m + 7 = 4m + 7
4m + 7 = 50
4m = 44
m = 11
2m = 11 x 2 = 22 minutes
Which of the following is the result of expanding 5 £ n=1 (2n-2)?
Answer:B on edge (15.5)
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
I will give brainliest and ratings if you get this correct
Using Cramer's rule for first-order condition:
x₁ = -149/444x₂ = -69/222x₃ = 139/444Using Hessian for the second-order condition, critical point (x₁, x₂, x₃) = (-149/444, -69/222, 139/444) is the unique minimum of y.
How to determine 1st and 2nd order condition?(a) Using Cramer's rule for the first-order condition:
To optimize the function y, find the critical points where the gradient is equal to zero. The gradient of y is given by:
∇y = [6x₁ - x₂ - 3x₃ - 5, -x₁ + 12x₂ + 2x₃ - 4, 2x₂ + 8x₃ + 2 - 3x₁]
Setting the gradient equal to zero:
6x₁ - x₂ - 3x₃ - 5 = 0 (1)
-x₁ + 12x₂ + 2x₃ - 4 = 0 (2)
2x₂ + 8x₃ + 2 - 3x₁ = 0 (3)
Using Cramer's rule to solve this system of linear equations, the determinant of the coefficient matrix is:
|A| =
| 6 -1 -3 |
|-1 12 2 |
|-3 2 -3|
|A| = 444
The determinant of the matrix obtained by replacing the first column of A with the constants on the right-hand side of the equations is:
|A₁| =
| 5 -1 -3 |
| 0 12 2 |
| 0 2 -3|
|A₁| = -149
The determinant of the matrix obtained by replacing the second column of A with the constants is:
|A₂| =
| 6 5 -3 |
|-1 0 2 |
|-3 0 -3|
|A₂| = -138
The determinant of the matrix obtained by replacing the third column of A with the constants is:
|A₃| =
| 6 -1 5 |
|-1 12 0 |
|-3 2 2|
|A₃| = -278
Therefore, using Cramer's rule:
x₁ = |A₁|/|A| = -149/444
x₂ = |A₂|/|A| = -69/222
x₃ = |A₃|/|A| = 139/444
(b) Using the Hessian for the second-order condition:
To check whether the critical point found in part (a) is a maximum, minimum or saddle point, we need to use the Hessian matrix evaluated at the critical point. The Hessian of y is given by:
(y) =
| 6 0 -3 |
| 0 12 2 |
|-3 2 8 |
Evaluating H(y) at the critical point (x₁, x₂, x₃) = (-149/444, -69/222, 139/444):
H(y) =
| 6 0 -3 |
| 0 12 2 |
|-3 2 8 |
The eigenvalues of H(y) are 2, 6, and 18, which are all positive. Therefore, H(y) is positive definite, and the critical point is a minimum.
Therefore, the critical point (x₁, x₂, x₃) = (-149/444, -69/222, 139/444) is the unique minimum of y.
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If (x - 3) 2 = 5, then
Answer:
Step-by-step explanation:
2(x-3) = 5
Distribute.
2x - 6 = 5
Eliminate the 6.
2x = 11
Divide by 2.
x = 11/2
Answer:
\(\frac{11}{2}\)
Step-by-step explanation:
We can use distributive property to simplify the equation, \(2x-6=5\). Now, we can move -6 to the right hand side. \(2x=11\). Finally, we can divide 2, \(x=\frac{11}{2}\) or \(x = 5\frac{1}{2}\)
Solve each equation for x. Show all steps.
A) log base 4 (x^2 -12x+48) =2
B) 27^(4x-6) =(1/9)^(2x-7)
A) The value of x in log₄(x² - 12x + 48) = 2, is x = 4 OR x = 8
B) The value of x in 27^(4x-6) =(1/9)^(2x-7), is x = 2
Solving equations: Determining the value of xFrom the question, we are to solve the given equations
The given equation is log₄(x² - 12x + 48) = 2
From one of the laws of logarithm, we have that
logₐ x = n ⇒ x = aⁿ
Thus,
log₄(x² - 12x + 48) = 2 becomes
(x² - 12x + 48) = 4²
x² - 12x + 48 = 16
x² - 12x + 48 - 16 = 0
x² - 12x + 32 = 0
Solve the quadratic equation
x² - 12x + 32 = 0
x² - 8x - 4x + 32 = 0
x(x - 8) -4(x - 8) = 0
(x - 4)(x - 8) = 0
x - 4 = 0 OR x - 8 = 0
x = 4 OR x = 8
B) 27^(4x-6) =(1/9)^(2x-7)
Solve for x
27^(4x-6) =(1/9)^(2x-7)
Express the bases in index form
3^3(4x-6) =(3)^-2(2x-7)
Equate the powers
3(4x - 6) = -2(2x - 7)
12x - 18 = -4x + 14
12x + 4x = 14 + 18
16x = 32
Divide both sides by 16
16x/16 = 32/16
x = 2
Hence, the value of x is 2
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I need help on this geometry thing someone plz hell
Answer:
Step-by-step explanation:
If the equation is solved, which is true?
If -2 - v = 16, then v = 14.0
If -2 + v = 16, then v = 18.0
If -2 + v = 16, then v = 14
If v + -2 = 16, then v = -8
I don't know yet
Answer:
second option is true:
-2 + v = 16
Step-by-step explanation:
do them all:
-2 - v = 16
-v = 18; v = -18 (NOT 14) FALSE
-2 + v = 16
v = 18 TRUE
-2 + v = 16
v = 18 (NOT 14) FALSE
v + (-2) = 16
v = 18 (NOT -8) FALSE
Completely expand the following logarithm:
log(5x³)
The completely expanded form of the logarithm log(5x³) is log( 5 ) + 3log( x ).
What is the expanded form of the logarithm log( 5x³ )?Logarithm is simply the inverse function to an exponentiation.
It is the power to which a base is raised to yield a given figure.
Given the logarithm in the question;
log( 5x³ )Expanded form = ?To complete expand the logarithm, rewrite log( 5x³ ) as log( 5 ) + log( x³ ).
log( 5 ) + log( x³ ).
Next, expand log( x³ ) by moving 3 outside the logarithm. log( x³ ) = 3log( x ).
log( 5 ) + log( x³ ).
log( 5 ) + 3log( x )
Therefore, the expanded form is log( 5 ) + 3log( x ).
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Wanda is going to the water slides and needs to figure out which deal is better. She can pay
$32 to go on the water slides as much as she wants, or she can pay $18 to get in, plus an
additional $2 per trip down the water slides. If Wanda goes on a certain number of trips down
the water slides, the two options are equivalent in terms of cost. What is the cost? How many
trips is that?
Answer: The cost for the total trips is $14. The amount of trips that Wanda can make is a maximum of 7 to equal the amount.
Step-by-step explanation:
First, make the amount of trips, x
Step 1. $32 = $18 + $2x
Step 2. ($32 - $18) = ($18 - $18) + $2x
Step 3. $14 = $2x
Step 4. $14 / $2 = $2x / $2
Step 5. $7 = x
Step 6. $32 = $18 + ($2 * 7)
Step 7. $32 = $18 + $14
Step 8. Check for the equation. $32 = $32
(correct me if im wrong)
Can someone help me answer this
Add up the times spent
The table shows the amount of pet food in cups remaining in an automatic feeder as a function of the number of meals the feeder has dispensed.
Based on the table, which function models this situation?
Answer:
f(n) = -3n + 24
Step-by-step explanation:
Let the function representing Number of meals and amount of Pet Food remaining is,
f(n) = an + b
Where a = number of meals dispensed
n = amount of Pet food per meal
b = Initial amount of Pet food
From the table attached,
For n = 1 and f(n) = 21,
21 = a(1) + b
a + b = 21 -----------(1)
For n = 3 and f(n) = 15,
15 = a(3) + b
3a + b = 15 -----------(2)
Equation (2) - equation (1),
(3a + b) - (a + b) = 15 - 21
a = -3
From equation (1),
-3 + b = 21
b = 24
Therefore, function will be,
f(n) = -3n + 24
Answer:f(n)=-3+24
Explanation
Unit rate of the table is three therefore taking away 3 cups each time food is dispensed aka -3n. 24 represents the starting point. 21+3=24
Juliet has a choice between receiving a monthly salary of $1900 from a company or a base salary of $1800 and a 5% commission on the amount of furniture she sells during the month. For what amount of sales will the two choices be equal?
Juliet will earn the same amount of money whether she chooses a monthly salary of $1900 from the company or a base salary of $1800 plus a 5% commission on furniture sales if her sales amount to $2000.
To find the amount of sales for which the two salary choices are equal, we set the equation for the base salary plus commission equal to the equation for the flat monthly salary. The equation can be written as:
1800 + 0.05x = 1900
where x is the amount of furniture sales in dollars.
Simplifying and solving for x, we get:
0.05x = 100
x = 2000
If she sells less than $2000 of furniture, she will earn more with the flat monthly salary of $1900. If she sells more than $2000 of furniture, she will earn more with the base salary plus commission. This calculation provides an important decision-making tool for Juliet, as she can tailor her salary choice based on her expected sales for the month.
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Consider matrix A.
What matrix results from the elementary row operations represented by −2R2+3R1?
Answer:
\(A = \left[\begin{array}{ccc}-3&3&2\\-25&-13&0\end{array}\right]\)
Step-by-step explanation:
Given the matrix
\(A = \left[\begin{array}{ccc}-3&3&2\\8&-1&3\end{array}\right] \\R1 = -3, 5, 2\\R2 = 8, -1, 3\\\\\)
Before we can get the resulting matrix after the elementary operation, we need to get the new second row using the formula −2R2+3R1?
when R1= -3, R2 = 8
−2R2+3R1? = −2(8)+3(-3)
−2(8)+3(-3) = -16-9
−2(8)+3(-3) = -25
R1= 5, R2 = -1
−2R2+3R1? = −2(-1)+3(5)
−2(-1)+3(5) = 2-15
−2(-1)+3(5) = -13
when R1= 2, R2 = 3
−2R2+3R1? = −2(3)+3(2)
−2(3)+3(2) = -6-6
−2(3)+3(2) = 0
Hence the new R2 are -25, -13, 0
The resulting matrix will be:
\(A = \left[\begin{array}{ccc}-3&3&2\\-25&-13&0\end{array}\right]\)
Answer:
-25 17 0
8 -1 3
Step-by-step explanation:
A class has 6 boys and 15 girls. What is the ratio of boys to girls in simplest form?
Answer:
2:5
Step-by-step explanation:
They can both be divided by 3.
6 divided by 3 is 2, while 15 divided by 3 is 5
Boys:Girls
6:15
2:5
Answer:
2:5
Step-by-step explanation:
If x is equal to -6 which equality is true
Answer:
-5 - 3x > 10
Step-by-step explanation:
x = -6
Plug in the x value for each inequality:
-5 - 3(-6) > 10
-5 + 18 > 10
13 > 10
True
-3 - 5(-6) < -14
-3 + 30 < -14
27 < -14
False
1 - 2(-6) > 13
1 + 12 > 13
13 > 13
False
2 - (-6) < -3
2 + 6 < -3
8 < -3
False
Only one of these is true; that is the answer.
An area rug is 36 square feet. How many feet long is the side?
Answer:
6
Step-by-step explanation:
6x6 is 36
Which of the following are remote interior angles of <1
Option A) and C) are the correct option which is the remote interior angles of ∠1 are ∠4 and ∠6.
Remote interior angles are the angles that are inside the given triangle and opposite from the exterior angle.
According to the given question we have been given that the ∠1 is an exterior angle and an exterior angle has two remote interior angles.
Thus from the figure we can see that opposite of ∠1 is the vertex with angle ∠4 and ∠6.
Hence the remote interior angles of ∠1 are ∠4 and ∠6. That is option A) and C) is the correct option.
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