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2 years ago

4 gallons of paint cost a total $22.00. How much will 14 gallons cost? A. $60.50 B. $242.00 C. $82.00 D. $77.00

1 answer:

4 0

The answer is D. $77.00. To get the cost for a single gallon you divide $22 by 4 gallons you get $5.50. To get the cost for 14 gallons you multiply $5.50 by 14 and you get the answer $77.00.

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Find the circumference of each circle. Use 3.14 or 22/7 for π. Round to the nearest tenth, if necessary.

zhuklara [117]

$c \: = \pi \: \times diameter \\ \: \: \: \: \: \: = \frac{22}{7} \times 20 \: inches \\ = \: 62.9 \: inches$

7 0

1 year ago

Solve the following system of equations algebraic<br> y=x^2+3x-29<br> y=2x-9

Lady bird [3.3K]

Step-by-step explanation:

Given equations:

y = x² + 3x - 29 ------ (i)

y = 2x - 9 ---------------- (ii)

Now to solve this problem, we must determine the value of x and y;

Equate equations 1 and 2;

x² + 3x - 29 = 2x - 9

x² + 3x - 2x - 29 + 9 = 0

x² + x - 20 = 0

x² + 5x - 4x - 20 = 0

x(x + 5 ) - 4(x + 5) = 0

(x - 4) (x+ 5) = 0

x - 4 = 0 or x + 5 = 0

x = 4 or x = -5;

So; solve for y now;

y = 2x - 9

input x = 4 or x = -5;

y = 2(4) - 9 or y = 2(-5) - 9

y = -1 or y = -19

7 0

2 years ago

The graph shown compares the rent Andrew and Dave pay for renting bikes from different stores

Dmitry_Shevchenko [17]

Answer:I don’t know either

Step-by-step explanation:

5 0

2 years ago

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Divide mentally. 6.2 ÷ 2,000 = ? A. 0.31 B. 0.031 C. 0.0031 D. 0.00031

soldi70 [24.7K]

C. 0.0031

6.2 divided by 2,000 = 0.0031

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2 years ago

1. What is the solution of n² – 49 = 0? (1 point)

maks197457 [2]

Answer:

1. $n=\pm7$

2. $x=\pm7i[tex]3.[tex]\pm 12x =a$

4. 22

Step-by-step explanation:

1. $n^2 - 49 = 0$

$n^2 =49$

$n= \sqrt{49}$

$n=\pm7$

2. $x^2+64 = 0$

$x^2 =-64$

$x= \sqrt{49}$

$x=\pm7i[tex]3. Area of square = [tex]a^{2}$

Where a is the side

We are given an area o square = $144x^{2}$

So, $144x^{2}=a^{2}$

$\sqrt{144x^{2}}=a$

$\pm 12x =a$

4. We are given that the solution of quadratic equation -9 and 9

So, equation becomes:

$(x+9)(x-9)=0$

$x^2- 81=0$

So, in the given equation $x^2 + z = 103$

z should be the number from which if we subtract 103 so we get 81

Substitute z = 22

$x^2 + 22 = 103$

$x^2 + 22 -103=0$

$x^2 -81=0$

Thus the value of z is 22

8 0

3 years ago

Read 2 more answers