2 years ago

Need Help Please!!

Mathematics

1 answer:

rosijanka [135]2 years ago

3 0

Check the picture below.

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If f(x) = 4x - 20, what is f(4)?

Nataliya [291]

Answer:

f(4) = -4

Step-by-step explanation:

f(x) = 4x - 20

Let x= 4

f(4) = 4*4 - 20

Multiply first

= 16 -20

Then subtract

= -4

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3 years ago

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What % of 400 is 85?

quester [9]

21.25% because 85/400 = .2125 which is 21.25%

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3 years ago

Kevin has $50 and wants to buy some art paper and paints. One pack of art paper costs $12, and the paints cost $6 per tube. He b

lara [203]

Answer: 4

Step-by-step explanation:

2(12) + 6n ≥ 50

24 + 6n ≥ 50

6n ≥ 26

n ≈ 4

The maximum number of tubes of paint that Kevin can buy is 4.

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3 years ago

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12345 [234]

Answer: $28.35\ minutes$

Step-by-step explanation:

Let be "x" the time in minutes a 150-pound person must walk at 4 mph to use at least 190 calories.

The amount of calories that a 150-pound person uses in 1 minute when walking at a speed of 4 mph is:

$Calories\ per\ minute=6.7$

Therefore, knowing this, we can write the following proportion:

$\frac{1}{6.7}=\frac{x}{190}$

Finally, we must solve for "x" in order to find its value.

Multiplying both sides of the equation by 190, we get this result:

$(190)(\frac{1}{6.7})=(\frac{x}{190})(190)\\\\x=28.35$

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3 years ago

Find the net price if the $10.00 list price is discounted 10%.

yanalaym [24]

Answer:

9.00

Step-by-step explanation:

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2 years ago

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