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4 years ago

-2 (2F+3)=10

1 answer:

4 0

The correct answer would be F = -4

To begin, you were supposed to distribute the -2 to the numbers in the parentheses. Then you add 6 to both sides. And finally you divide both sides by -4.

-2(2F + 3) = 10
-4F - 6 = 10
-4F = 16
F = -4

Hope this helps! :)

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Suppose that y varies directly with x and y =10 when x = 20. What is y when x=15

Vanyuwa [196]

y=13.34 when x=15

Step-by-step explanation:

We are given that x varies directly with y i.e y ∝ x

We know that: y ∝ x then

y= k/x

where k is constant.

So, if y=10 and x=20 we can find k

$y=\frac{k}{x}\\10=\frac{k}{20}\\ k=10*20\\k=200$

Now, we need to find y when x=15

We know that k = 200,

So, $y=\frac{k}{x}\\y=\frac{200}{15}\\y=13.34\\$

So, y=13.34 when x=15

Keywords: Direct variation

Learn more about Direct variation at:

#learnwithBrainly

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3 years ago

Last year Kaitlin opened an investment account with $7600. At the end of the year, the amount in the account had increased by 6.

Doss [256]

The increase was: 494

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3 years ago

28cm, 62cm, 75cm is this a right triangle

never [62]

Answer:No

Step-by-step explanation:

7 0

4 years ago

Answer this pls thank u,

natta225 [31]

The answer is D, the yellow

5 0

3 years ago

Need help solving it. Quantitative Literacy.

ioda

1 lb ≈ 0.454 kg

1 in ≈ 2.54 cm

I'm not sure I understand the "do not" part of this question. What does it mean to convert from cubic inches (volume) to inches (length), and from centimeter to cubic centimeters?

In any case, you have

(1 lb)/(32.375 in³) ≈ (1 lb)/(3.19 in)³

… ≈ (1 lb)/(3.19 in)³ × (0.454 kg)/(1 lb) × ((1 in)/(2.54 cm))³

… ≈ (0.454 kg)/(3.19 in)³ × ((1 in)/(2.54 cm))³

… ≈ (0.454 kg) × ((1 in)/((3.19 in) × (2.54 cm))³

… ≈ (0.454 kg) × (1/(8.10 cm))³

… ≈ (0.454 kg) × 1/(530.531 cm³)

… ≈ (0.454 kg)/(530.531 cm³)

… ≈ 0.000856 kg/cm³

5 0

3 years ago