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3 years ago

How can i solve this using substitution method?

Mathematics

1 answer:

nekit [7.7K]3 years ago

6 0

U didn’t put a picture of the question

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Very easy; answer asap, 18 points

AnnZ [28]

The second post is wrong.

The third post is also wrong.

The fifth post is also wrong.

558 is the number of dollars made in revenue. Assuming each student payed the same, you actually can find out the price that each student payed, which is 4.50.

8 0

3 years ago

A section of a deck is shaped like a trapezoid. For this section, the length of one base is 57 feet, and the length of the other

kondor19780726 [428]

Answer:

Area of section is 981 square feet

Step-by-step explanation:

<h3>Given trapezoid with:</h3>

Bases 57 feet and 52 feet;
Height 18 feet.

Area of trapezoid

<h3>Solution</h3>

Equation of area:

A = (b₁ + b₂)h/2

Substitute values and calculate:

A = (57 + 52)*18/2 = 109*9 = 981 ft²

7 0

2 years ago

I need help please!!!

swat32

Answer:

Step-by-step explanation:

A translation 4 units to the right and 6 units down means that all of the x values increase by 4 and all of the y values decrease by 6.

Adding 4 to all of the x values and subtracting 6 from all of the y values gives us the coordinates:

A' (-3, 0), B' (8, 3), C' (2, -9)

4 0

3 years ago

1) Which expression is equal to

mel-nik [20]

Answer:

None of the expressions in the option is equal to 10 x(13).

Step-by-step explanation:

The answer can be verified by calculating the values of the expression in the question, those of each options, and then compare as follows:

Value of the expression = 10 x (13) = 10 x 13 = 130

Therefore, we have:

A. 10 + (1+3) = 10 + 4 = 14 $\neq$ 130

B. (10 x 1)+3 = 10 + 3 = 13 $\neq$ 130

C. 10 + (1x3) = 10 + 3 = 13 $\neq$ 130

D. (10 * 1)3 = 10 * 3 = 30 $\neq$ 130

Based on the calculations above, none of the expressions in the option is equal to 10 x(13).

6 0

3 years ago

What was Dimitri's mistake? He mixed up the coordinates of the ordered pair when Substituting it into the equations 7x+9y=-4 and

seropon [69]

Answer:

He made a mistake in his calculations when simplifying 5x - 2y

Step-by-step explanation:

Given

The coordinate pair

$(x,y) = (2,-2)$

The equations

$7x + 9y = ?$

$5x - 2y = ?$

Dimitri's Solution

$Equation\ 1: 7x + 9y = -4.$

$7(2) + 9 (-2) = -4.$

$14 + (-18) = -4.$

$-4 = -4.$

$Equation\ 2: 5x -2y = 6.$

$5(2) - 2 (-2) = 6.$

$10 - 4 = 6.$

$6 = 6.$

Required

Identify Dimitri’s mistake

In the first equation, Dimitri made no mistake.

However, he made a mistake when simplifying the second equation.

We have:

$5x - 2y$

and

$(x,y) = (2,-2)$

Substitute $x = 2$ and $y = -2$

So, we have:

$5(2) -2(-2)$

Open bracket

$10 +4$

Finally, we have:

$14$

7 0

3 years ago