Solve for X in the equation;
2x+5=7

Answer:

705.81 and 705.810

Step-by-step explanation:

700 + 5 + 0.8 + 0.01 = 705.81

Answers:

705.810

705.81

Answer:

Step-by-step explanation:

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The values of a and b are a = -3 and b = 42. The solutions for x can be written as:

x = -3 - √42

x = -3 + √42

To solve the quadratic equation 2x² + 12x = 66 by completing the square, we need to follow these steps:

Step 1: Move the constant term to the right side:

2x² + 12x - 66 = 0

Step 2: Divide the equation by the leading coefficient (2):

x² + 6x - 33 = 0

Step 3: To complete the square, we take half of the coefficient of x, square it, and add it to both sides of the equation:

x² + 6x + (6/2)² = 33 + (6/2)²

x² + 6x + 9 = 33 + 9

x² + 6x + 9 = 42

Step 4: Rewrite the left side as a perfect square:

(x + 3)² = 42

Step 5: Take the square root of both sides:

√(x + 3)² = ±√42

x + 3 = ±√42

Step 6: Solve for x:

x = -3 ± √42.

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Answer:

Danny has the better deal.

Step-by-step explanation:

26 x 2 = 52

Danny charges $52 for 4 hours while Martin charges $60.

Answer:

30x + 15 = 75; 2 hours

Step-by-step explanation:

30x + 15 = 75

Subtract 15 from 75 (75 - 15 = 60)

30x = 60

Divide by 30 (60 / 30 = 2)

x = 2

The probability Julian chooses a blue hat is 1/3.

Probability refers to the branch of math which deals with finding out the likelihood of the occurrence of an event.

Total hat is:

= 25+20+40+30+25+1

= 150.

There are a total of 150 hats to choose from.

The number of blue hats to choose from is:

= 40 + 10

= 50.

The probability that Julian chooses a blue hat is:

= 50/150

= 1/3

= 0.33 or 33.33%.

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Given

total female surveyed = 150

male surveyed = 450

expert players = 80

novice players = 180

Find

Complete the table

Explanation

Male Female Total

Novice player - 50 180

Average - 50 -

Expert 30 - 80

Total 450 150 600

female - Novice player + average + expert = 150

so , 50 + 50 + Expert = 150

Expert = 50

Expert = 30 + female = 80

female = 50

Total = Novice player + average + expert = 600

180+average+80=600

average = 600-260 = 340

Average= male + female = 340

male = 340-50 = 290

Final Answer

Male Female Total

Novice player 130 50 180

Average 290 50 340

Expert 30 50 80

Total 450 150 600

Based on the information we can infer that the equation shown in the image is 1.23 - 0.35 = 0.88 (option B).

To identify the correct equation we must look at the graph and identify the information it provides. In this case we have two squares divided into 100 squares each. Additionally, the square on the left has 88 squares painted in red and 12 squares with an X inside. In the case of the square on the right, it has 23 squares colored in red with an X inside.

In total we have 123 squares painted in red, which in decimal number is equivalent to 1.23. On the other hand, the number of squares painted red and with an X inside is 35, this value would be 0.35.

On the other hand, the squares painted only in red are 88, so the equivalent in decimal numbers would be 0.88. Therefore, the correct way to express this relationship through an equation would be:

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Answer:

The burgers cost $2.50 and the cookies cost $1.25.

Step-by-step explanation:

Let b represent burgers and c represent cookies.

2b + 2c = 7.50

4b + 3c = 13.75

Step 1: Use one of the two equations and isolate one of the variables.

2b + 2c = 7.50

      - 2c    -2c

\(\frac{2}{2}\)b = \(\frac{7.50}{2}\) - \(\frac{2}{2}\)c

b =  3.75 - c

Step 2: Plug what you get for b into the second equation.

4(3.75 - c) + 3c = 13.75

15 - 4c + 3c = 13.75

15 - 1c = 13.75

Step 3: Isolate the variable and solve for c.

15 - 1c = 13.75

-15        -15

\(-\frac{1}{1}\)c = \(\frac{-1.25}{-1}\)

c = 1.25 ← price for cookies

Step 4: Plug in what you have for c into one of the previous equations and solve for b.

2b + 2(1.25) = 7.50

2b + 2.50 = 7.50

     - 2.50   -2.50

\(\frac{2}{2}\)b = \(\frac{5}{2}\)

b = 2.50 ← price for burgers

Now you know the cost of each item:

The burgers cost $2.50 and the cookies cost $1.25.

Step-by-step explanation:

very quick : as the new plant is shorter than all the others, it will decrease the mean value.

the only answer option with "decrease" is the 4th one and correct.

If another plant with a height of 11 inches is added to the data, the mean would increase in value to about 17.2 inches. The correct option is c.

Data analysis is the methodical application of logical and/or statistical approaches to describe and demonstrate, summarize and assess, and assess data.

here, we have,

from the given information, we get,

Every time we make a decision in daily life, as a simple example of data analysis, we consider what happened previously or what would happen if we make that particular choice.

The original mean of the 14 plants is 17.1

The new mean with the 23 in. plant is 17.2

Therefore, the correct option is c. The mean would increase in value to about 17.2 inches.

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Answer:

16 cups a day

Step-by-step explanation:

answer: 28561^2in the area involves multiplying by the 4 sides of the shaded square and the shaded is the colored square.

Answer:5

Step-by-step explanation:

Answer:

the answer (a)

Step-by-step explanation:

Answer:

d) 4x+5

Step-by-step explanation:

8-4=4

since x is a variable par it up with 4

4x

the only thing left is 5

4x+5

This is our y intercept

This is our slope or rate of change

So

The equation becomes

Where m is miles driven

The no. of miles not including any tip the taxi traveled is 22 miles.

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

Given, The taxi company charged a pick-up fee of $3.20 plus $2 per mile.

Let, 'm' be the no. of miles and the total fare was $47.20.

Therefore, The numerical form of these statements is,

2m + 3.20 = 47.20.

2m = 47.20 - 3.20.

2m = 44.

m = 44/2.

m = 22.

So, The taxi traveled 22 miles.

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Answer:

Its C

Explanation

c. The atomic number and atomic mass increase from left to right across a period; energy levels

increase from top to bottom down a group.

Answer:

y=2x-6

Step-by-step explanation:

y+4=-2(x-1)

Since the slope intercept form is in the form of:

y=mx+c

Making above equation in this form.

y+4=-2(x-1)

opening bracket

y+4=2x-2

subtracting both side by 4.

y+4-4=2x-2-4

y=2x-6

This equation is the slope intercept form.

Answer:

It is 31:5

Step-by-step explanation:

Hope this helped have an amazing day!

Answer:

$90

Step-by-step explanation:

A=lw

A=20x20

A=40 ft²

40x2.25=$90

\(\huge\color{pink}\boxed{\colorbox{black}{Answer ☘}}\)

using BODMAS..

1 )

\((8 + 5) {}^{2} + (14 - 18 \div 6) \\ = > (13) {}^{2} + (14 - 3) \\ = > 169 + 11 \\ = > 180\)

2)

\((14 + 24 - 6) \div 16 - 2 {}^{2} \\ = > 32 \div 16 - 4 \\ = > 2 - 4 \\ = > - 2\)

hσpє hєlpful~

Answer:

Answer in the photo above.

Answer: To express the reduction as a rate of kobo in naira, we need to calculate the difference between the original price and the new price, and then convert that difference to kobo.

The original price was 5 naira, which is the same as 500 kobo (since 1 naira = 100 kobo). The new price is 4 naira and 20 kobo, which is the same as 420 kobo.

The reduction in price is the difference between the original price and the new price:

500 kobo - 420 kobo = 80 kobo

So the reduction in price is 80 kobo.

To express the reduction as a rate of kobo in naira, we need to divide the reduction (in kobo) by the original price (in naira) and then multiply by 100 to get a percentage:

(reduction in kobo / original price in naira) x 100

Substituting the values we have:

(80 kobo / 500 kobo) x 100 = 16%

Therefore, the reduction in price is 16% expressed as a rate of kobo in naira.

Answer:-39

Step-by-step explanation:

The first thing is to open the bracket.

By doing that, the question becomes -37-2.

note that plus×minus=minus.

Hence,-39 as the final answer

Answer:

2:1

Step-by-step explanation:

to make the smaller triangle turn into the bigger triangle, each side has to be multiplied by a factor of 2. double the little triangle and you will get the bigger one

Given:

Equation of line is,

The slope of the secant line between x =a and x= b is calculated as,

Answer: slope of the secant line is m = -6.36

The inverse of f(x) = x^(7/9) using exponential notation is f(x) = x^(9/7)

An inverse function in mathematics is a function that "undoes" another function.

In other words, if f(x) yields y, then y entered into the inverse of f yields the output x.

An invertible function is one that has an inverse, and the inverse is represented by the symbol f⁻¹.

The given function is of the form

f(x) = x^(7/9), this is equivalent to ⁹√x⁷

say f(x) = y, then

f(x) = y = x^(7/9)

y = x^(7/9)

solving for the inverse, of y = x^(7/9)

y = x^(7/9)

y^(9/7) = x

interchanging the letters

y = x^(9/7)

hence the inverse function is solved to be f⁻¹(x) = x^(9/7)

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