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Tanzania [10]
3 years ago
7

What is the value of y in the equation 6.4x + 2.8y = 44.4, when x = 3?

Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
4 0

Answer:

Hi! The answer to your question is y = 9

Step-by-step explanation:

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☁Brainliest is greatly appreciated!☁

Hope this helps!!

- Brooklynn Deka

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Answer questions 15 and 17 show work pls
fredd [130]

Answer:

#15) B. 30 mn^5

#17) B. 1/2

Step-by-step explanation:

<h2>#15:</h2>

The area of a trapezoid is given in the formula: 1/2(a + b) * h, where a is the length of the top of the trapezoid, b is the length of the bottom of the trapezoid, and h is the height of the trapezoid.

All of these measurements are given so all that you need to do is to substitute these values into the formula.

Substitute 3 for a, 9 for b, and 5 for h.

  • 1/2(3 + 9) * 5

Solve inside the parentheses first. Add 3 and 9.

  • 1/2(12) * 5

Multiply 12 and 1/2 together.

  • 6 * 5

Multiply 6 and 5.

  • 30

We need to figure out if the area is to the 5th or 6th power. When we added 3 and 9 together, we combined like terms so the exponent stayed to the 3rd power.

After multiplying this ^3 by the 5mn^2, the exponent becomes to the 5th power because you add exponents when multiplying.

Therefore the final answer is B. 30 mn^5.

<h2>#17:</h2>

When going down from 32 to 8 to 2, you can see that each number is being divided by 4.

32 / 4 = 8...

8 / 4 = 2...

So to find the next number in this sequence you would divide 2 by 4.

  • 2 / 4 = 1/2

The answer is B. 1/2.

6 0
3 years ago
Richard bought a car for $2,500. The value of the car depreciates by 5% each year,
sladkih [1.3K]

Step-by-step explanation:

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<em>The</em><em> </em><em>answer is option</em><em> </em><em>D</em><em>.</em>

<em>I</em><em> </em><em>have</em><em> </em><em>given</em><em> </em><em>solution</em><em> </em><em>on</em><em> </em><em>the</em><em> </em><em>picture</em><em>.</em>

<em>Hope it helps</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em>

6 0
3 years ago
Read 2 more answers
Please can someone help me?
Debora [2.8K]
If the perimeters are equal, you can form an equation to find x:
x + x + 12 + x + x + 12 = x + 11 + x + 11 + x + 16
4x + 24 = 3x + 38
- 3x
x + 24 = 38
- 24
x = 14
Now you can substitute the x value into the perimeter:
(4 × 14) + 24
56 + 24 = 80 cm

(3 × 14) + 38
42 + 38 = 80 cm

So the perimeter would be 80 cm.
I hope this helps!
6 0
3 years ago
Find the Percent:
ycow [4]

Step-by-step explanation:

First, find 12 percent of 1,150,

12 percent of 1,150 = 138.

Now, add 1,150 + 138,

1,150 + 138 = 1,288

Hope I helped, if not, at least I tried.

6 0
2 years ago
Put this least to greatest; 0.5,0.05,5/8 HELP PLEASE
Margarita [4]
0.05, 0.5, 5/8 

5/8 is greater than 0.5 since 0.5 = 1/2 which equals 4/8
7 0
3 years ago
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