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exis [7]
3 years ago
12

If 3, 9, 10, x are in proportion find the value of x.​

Mathematics
2 answers:
Harlamova29_29 [7]3 years ago
8 0

Step-by-step explanation:

Given that 3, 9, 10, x are in proportion <br> product of exterms = Product of means <br>

<br>

3x=9×10

X=(9x10)/3

X=90/3

X=30

Colt1911 [192]3 years ago
5 0

Answer:

x = 30

Step-by-step explanation:

If 3, 9, 10, x are in proportion. Then,

x \times 3 = 10 \times 9

x \times 3 = 90

<h3>x =  \frac{90}{3}</h3>

x = 30

<h3>Hope it is helpful.....</h3>
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Find the whole quantity if 5 percent of it is 500​
liq [111]

Answer:

10,000

Step-by-step explanation:

500/0.05= 10,000

You take the amount you are given divided by the decimal form of the percentage you are given to find the answer.  It's a reverse from the way you find 5% of 10,000.

0.05=5%

Check your work: 10,000*5%= 500

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3 years ago
5 pounds of apples cost $9.95. Find the unit rate.
Anna71 [15]
9.95[divide]5 = $1.99
6 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=3x%20-%202y%20%3D%2043x%20%2B%202y%20%3D%208" id="TexFormula1" title="3x - 2y = 43x + 2y = 8"
den301095 [7]

3x - 2y = 8 +

===》 46x = 16

43x + 2y = 8

x = 16/46

x = 8/23

______________________________

3x - 2y = 8

3(8/23) - 2y = 8

24/23 - 2y = 8

2y = 24/23 - 8

y = 12/23 - 4

y = 12/23 - 92/23

y = - 80/23

5 0
3 years ago
Rectangle A has a length of 2x + 6 and a width of 3x. Rectangle B has a length of x + 2 and an area of 12 square units greater t
Maurinko [17]
So here is how you solve for the answer.
Firstly, you solve for the Area of Rectangle A.
The formula for Area is Length x width.
So A = (2x + 6)(3x) and the result is: 6x^2 + 18x
Now, let y be the width of rectangle B.
<span>(x+2) (y) = 6x^2 + 18x + 12
(x+2) y = 6(x+1)(x+2)
y = 6(x+1)
</span>So the final answer would be width is 6x + 6. The answer is the third option. Hope this answer helps.
7 0
4 years ago
If 2x⁴ + 2y⁴ + 2z⁴ = 144, what is the mean of x⁴, y⁴ and z⁴​
Margarita [4]

Answer: 24

Step-by-step explanation:

Given

2x^4+2y^4+2z^4=144

dividing whole equation by 2, we get

\Rightarrow x^4+y^4+z^4=72

Mean is given by the sum of the value of entities divided by the total no of entities

\Rightarrow \text{Mean}=\dfrac{x^4+y^4+z^4}{3}\\\\\Rightarrow \text{Mean}=\dfrac{72}{3}\\\\\Rightarrow \text{Mean}=24

5 0
3 years ago
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