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mojhsa [17]
4 years ago
5

What is the value of 3x divided by (10 - x) when 2x + 5 = 85

Mathematics
1 answer:
Reika [66]4 years ago
7 0

Answer:

-4

Step-by-step explanation:

2x + 5 = 85

2x = 80

x = 40

3x/(10-x)

3(40)/(10-40)

120/-30 = -4

You might be interested in
5. 3x-X-7=3 6.3x-3-X=3 7. -1 - 2x +3x=5 8. 3x - 22 - X=6 9. 2x+3x-10=10
Marta_Voda [28]
** 3x - x -7 = 3

2x = 10

x = 5

** <span>6. 3x - 3 -x = 3

18x - 3 - x = 3

17x = 6

x = </span>\frac{6}{17}

** <span>7. -1 - 2x + 3x = 5

-7 - 2x + 3x = 5

-7 + x = 5

x = 12

** </span><span>8. 3x - 22 - x = 6

24x - 22 - x = 6

23x = 28

x = </span>\frac{28}{23}

** <span>9. 2x + 3x -10 = 10

18x + 3x - 10 = 10

21x = 20

x = </span>\frac{20}{21}
6 0
3 years ago
Given the function rule f(x) = x^2 - 5x + 1, what is the output of f(-3)?
mojhsa [17]
 f(x) = x²<span> - 5x + 1

f(-3) = (-3)</span>² - 5(-3) + 1
<span>
f(-3) = 25


</span>--------------------------------------------------<span>
Answer: f(-3) = 25 (Answer C)
</span>--------------------------------------------------
4 0
4 years ago
A pet store sold 36 Siamese cats. If the ratio of Siamese cats to house cats sold was 4:9, what is the combined amount of cats s
Dafna11 [192]

 The combined amount of cats sold is 117.

Ratio expresses the relationship between two variables. It shows the frequency of which that one value is contained within another variable.

The ratio of  Siamese cats to house cats = 4 : 9

Number of Siamese cats = 36

Number of combined cats = c

This equation can be formed using the above information:

4/13 x c = 36

4c = 468

c = 468 / 4

c = 117

A similar question was answered here: brainly.com/question/411732

5 0
3 years ago
A ramp has a slope of 1, what is the relationship between the rise and ?
adelina 88 [10]

Answer:

the rise over run. if a ramp has a slope of 1 the rise over one is most likely 1/1

Step-by-step explanation:

7 0
4 years ago
Find the lateral area of the pyramid to the nearest whole number.
son4ous [18]

Answer:

The correct answer is first option.  204 m²

Step-by-step explanation:

Formula:-

Lateral surface area of square pyramid = 4 * area  of triangle

<u>To find the slant height of triangle(l)</u>

l = √(6² + 6²) = 6√2

To find the area of triangle

Area = bh/2

b = 12 m

h =  6√2

Area = (12 * 6√2)/2 = 36√2

<u>To find the lateral surface area of Prism</u>

Lateral surface area of square pyramid = 4 * area  of triangle

= 36√2 * 4 = 203.64 ≈ 204 m²

First answer is the correct option

7 0
3 years ago
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