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3 years ago

Evaluate 4x-7 when x=5

Mathematics

2 answers:

Anna007 [38]3 years ago

4 0

The answer is 13.

You can evaluate this by substituting x for 5 in the expression.

4x-7
4(5)-7
20-7
13

xz_007 [3.2K]3 years ago

4 0

Since x=5, we will make the problem into 4(5)-7. Following the order of operations, we need to multiply first. 4*5=20. Then we have 20-7, which is equal to 13. I hope this helps you!

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nadya68 [22]

Answer:

A.)

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2 years ago

Five workers are hired to seed a field by hand. Each is given a plot which is 6x12 feet in size. What is the total area of the f

Lorico [155]

Answer:

360 feet

Step-by-step explanation:

multiple 6 by 12 to get the area of the individual plot of land given to a single worker.

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3 years ago

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Nady [450]

Answer:

1 $\frac{3}{4}$

Step-by-step explanation:

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7 ÷ 4 = 1.75

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2 years ago

Read 2 more answers

The Temperature at 5:00 A.M. Is -38 F. The temperature rises 20 by 11:00 A.M. Use addition to find the temperature at 11:00 A.M.

GarryVolchara [31]

-38F + 20F equals -18F

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3 years ago

A triangle ABC is inscribed in a circle, such that AB is a diameter. What are the measures of angles of this triangle if measure

Katen [24]

Answer:

∠C=90°

∠A=67°

∠B=23°

Step-by-step explanation:

For angle C:

Thales' Theorem states that an angle inscribed across a circle's diameter is always a right angle.

Therefore, since AB is the diameter(hypotenuse) then angle C is the right angle. (90°)

For Angle A:

The measure of arc BC= 134 degrees. We can just use a formula for an inscribed triangle. ∠A = 1/2 (mBC)

∠A= (1/2)134

∠A= 77°

For angle B:

All triangle angles all add up to 180. We can just subtract angles A and C from 180°:

∠B = 180-(90+67)

∠B = 23°

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3 years ago