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3 years ago

5. Find the value of x. A. 55 B. 21 C. 12 D. 22 3x -30

Mathematics

1 answer:

Irina-Kira [14]3 years ago

5 0

Answer:

A is most reasonable

Step-by-step explanation:

The answer from that is -90 or 60, 55 is closest to 60

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Please help. I just am I bit confused..

8_murik_8 [283]

Answer:

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Step-by-step explanation:

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3 years ago

Which of the following is equation of a line that passes through (-2,1) and (-4,-3)?

ladessa [460]

Answer:

Step-by-step explanation:

The slope-intercept form of an equation of a line:

$y=mx+b$

m - slope

b - y-intercept

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

=======================================

We have the points (-2, 1) and (-4, -3). Substitute:

$m=\dfrac{-3-1}{-4-(-2)}=\dfrac{-4}{-2}=2$

$y=2x+b$

Put the coordinates of the point (-2, 1) to the equation:

$1=2(-2)+b$

$1=-4+b$ add 4 to both sides

$5=b\to b=5$

Finally:

$y=2x+5$

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3 years ago

Assume your balance is back at $0. You desperately want a TV for your bedroom, but you don’t have any money saved. You put the $

kkurt [141]

Answer:

you would pay 2% each month

Step-by-step explanation:

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3 years ago

A bicycle wheel travels 321 in for each revolution. What is the radius of the wheel

Sliva [168]

Answer:

51.1 ≈ r

Step-by-step explanation:

"A bicycle wheel travels 321 in for each revolution"- means that 321 is the circumference of the wheel that is a circle.

C = 2· π· r

What is the radius of the wheel ?

321 = 2· π· r, divide both sides of the equation by 2 π

(321/2·π) = r , use calculator, solve and round the answer

51.1 ≈ r

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2 years ago

Select the statement that describes this expression: 10 + x (5 + 3) − 3.

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3 years ago