3 years ago

Solve for the variable: 0.15a + 28.1 = 50 a = ?

Mathematics

1 answer:

valina [46]3 years ago

5 0

Answer:

a = 146

Step-by-step explanation:

0 . 1 5 + 2 8 . 1 = 5 0

3 / 2 0 + 2 8 . 1 = 5 0

3 /2 0 = 2 1 . 9

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Hi pls help me!!! thank you

elena-s [515]

Step-by-step explanation:

Circumference (C):

$C = 2\pi r = 2\pi(5\:\text{ft}) = 31.4\:\text{ft}$

Area (A):

$A = \pi r^2 = \pi(5\:\text{ft})^2 = 78.5\:\text{ft}^2$

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2 years ago

A jet travels 510 miles in 5 hours. At this rate, how far could the jet fly in 15 hours? What is the rate of speed of the jet?

n200080 [17]

Answer:

1530

Step-by-step explanation:

We already know that 5 hours is 510 miles and to know how much is 15 hours you will add 510 3 times 510 + 510 + 510 what 1530 would give

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3 years ago

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What is the slope of a line that goes through the points (-1,2) and (1, 4)?

oksian1 [2.3K]

Answer:

Step-by-step explanation:

We can use the slope formula

m = ( y2-y1)/(x2-x1)

= ( 4-2)/(1 - -1)

= (4-2)/(1+1)

= 2/2

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2 years ago

Please answer this correctly without making mistakes

Triss [41]

Answer:

2+3s

Step-by-step explanation:

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2 years ago

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Find an equation perpendicular to x=1 and passing through (8,-9)

valina [46]

Answer:

$y=-9$

Step-by-step explanation:

We want to find an equation of a line that's perpendicular to x=1 that also passes through the point (8,-9).

Note that x=1 is a <em>vertical line </em>since x is 1 no matter what y is.

This means that if our new line is perpendicular to the old, then it must be a <em>horizontal line</em>.

So, since we have a horizontal line, then our equation must be our y-value of our point.

Our y-coordinate of our point (8,-9) is -9.

Therefore, our equation is:

$y=-9$

And this is in standard form.

And we're done!

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3 years ago