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3 years ago

Can someone answer and explain?

Mathematics

1 answer:

Snezhnost [94]3 years ago

5 0

So you would need to find the area of a triangle using the height as 3.5 inches and the base as 4 inches. Once you find that, then multiply by 2 to get both of the triangles.

To get the rectangles you will do 9 x 4. Then multiply that answer by 3 to get the three rectangles.

To get the final answer you will add the sum of the triangles and the sum of the rectangles to get the answer.

Hope this helps!

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One number is 2 more than 3 times another. Their sum is 22. Find the numbers.

ivolga24 [154]

Make a system of equations.

$\sf~x=3y+2$
$\sf~x+y=22$

Re-arrange the 2nd equation:

$\sf~x+y=22$

Subtract y to both sides:

$\sf~x=-y+22$

Plug in -y + 22 for 'x' in the first equation.

$\sf~x=3y+2$

$\sf~-y+22=3y+2$

Subtract 3y to both sides:

$\sf~-4y+22=2$

Subtract 22 to both sides:

$\sf~-4y=-20$

Divide -4 to both sides:

$\sf~y=\boxed{\sf5}$

Plug this into any of the two equations to find 'x':

$\sf~x+y=22$

$\sf~x+5=22$

Subtract 5 to both sides:

$\sf~x=\boxed{\sf17}$

So one of the numbers is 5 and one of them is 17.

6 0

3 years ago

Will Mark Brainliest

Sati [7]

Answer:

1st:Linear, 2nd:Non-Linear

Step-by-step explanation:

1st one is linear because you will add the same amount of money every day, so it's linear.But sometimes you will earn more or less in 2nd one, so that is non linear.

3 0

4 years ago

Triple the sum of x and 5

Kamila [148]

Answer:

The expression becomes 3(x+5) = 3x+15

3 0

3 years ago

If you put $65 into a savings account that earns 4% simple interest, how much interest will you earn at the end of 8 years?

VikaD [51]

Answer:

$20.8

Step-by-step explanation:

I = PRT / 100

I = ?

P = 65

R = 4%

T = 8yrs

I = (65 * 4 * 8) / 100

I = $20.8

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3 years ago

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Lina20 [59]

Answer:

Step-by-step explanation:

estimate, appraise, evaluate, value, rate, assess mean to judge something with respect to its worth or significance.

6 0

3 years ago

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