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3 years ago

What is the value of x if 10–25x=5?

Mathematics

1 answer:

GrogVix [38]3 years ago

5 0

Answer:

1/5 or 0.2

Step-by-step explanation:

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Solve for x: 2(10-2x) = 4(3x + 1). Write your answer as a fraction.

qwelly [4]

Answer:

$\boxed{x=1}$

Step-by-step explanation:

$2(10-2x) = 4(3x + 1)$

$\sf Expand \ brackets.$

$20 - 4x = 12x + 4$

$\sf Subtract \ 12x \ and \ 20 \ from \ both \ sides.$

$20 - 4x - 12x - 20 = 12x + 4 - 12x - 20$

$-16x = -16$

$\sf Divide \ both \ sides \ by \ -16.$

$\displaystyle \frac{-16x}{-16} =\frac{-16}{-16}$

$x=1$

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3 years ago

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The sand at the bottom of an hourglass has the approximate shape of a cone with a diameter of 9.85 cm and a height of 6 cm.

Murljashka [212]

Divide the diameter by 2 to get the radius and then plug into cone volume pi*r^2*h/3 which is a bit under 160 so the answer is A

6 0

3 years ago

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How do you solve this equation 2x+5y=11 -3x+8y=-1

Brums [2.3K]

5y=3x...............

4 0

3 years ago

Plzzzzzzzzzzz answerrrrrrrrrrrrrrrr i need it asap

saul85 [17]

Answer: 120

1.2

If Maxine is correct, then she spent

1.2

times the hours she did homework than last week.

⋅

1.2

18.0

15 hours

⋅

1.2

18.0 hours

18 hours

This means that Maxine is correct.

HOPE THIS HELPS

6 0

3 years ago

If x=-7 is a root of the equation x^2+kx+49=0, then k=

aleksley [76]

Answer:

$k=14$

Step-by-step explanation:

Given:

$x^{2}+kx+49 = 0$

$x = -7$

Substitution can be used to find the value of $k$ :

$(-7)^{2}+(-7)k+49 = 0$

$49-7k+49 = 0$

$98 -7k = 0$

$k = 14$

Hope this helps :)

8 0

3 years ago