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3 years ago

Solve for d. a - C= d - r

Mathematics

1 answer:

MArishka [77]3 years ago

6 0

Answer:

a - C + r = d

Step-by-step explanation:

a - C = d - r

add r to both sides

a - C + r = d

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250 round to the nearest tenth is?

Naddik [55]

250 is the answer I think

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2 years ago

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And right angle RST, with MS equals 90° what is sin T? <br><br> Please I’m begging you

vampirchik [111]

Answer:

Step-by-step explanation:

Since sin is opposite over hypotenuse, the side opposite of angle T is RS and the hypotenuse is RT.

8 0

3 years ago

write the equation of the line that passes through the point (-1,-6) and is perpendicular to a line that passes through the poin

Burka [1]

Answer:

$y=\frac{2}{3}x-\frac{16}{3}$

Step-by-step explanation:

step 1

Find the slope of the given line

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have

(-2,5) and (-4,8)

substitute the values in the formula

$m=\frac{8-5}{-4+2}$

$m=\frac{3}{-2}$

$m=-\frac{3}{2}$

step 2

Find the slope of the perpendicular line to the given line

we know that

If two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes is equal to -1)

$m_1*m_2=-1$

$m_1=-\frac{3}{2}$ ----> slope of the given line

therefore

$m_2=\frac{2}{3}$ ---> slope of the perpendicular line to the given line

step 2

Find the equation of the line in point slope form

$y-y1=m(x-x1)$

we have

$m=\frac{2}{3}$

$point\ (-1,-6)$

substitute

$y+6=\frac{2}{3}(x+1)$

step 3

Convert to slope intercept form

$y=mx+b$

isolate the variable y

$y+6=\frac{2}{3}x+\frac{2}{3}$

$y=\frac{2}{3}x+\frac{2}{3}-6$

$y=\frac{2}{3}x-\frac{16}{3}$

4 0

4 years ago

Solve for the value of r.<br> r =

Kay [80]

Answer:

r=8

Step-by-step explanation:

45=6r-3

48=6r

r=8

3 0

3 years ago

If his heartbeat has increased by 8 beats per minute after 20 minutes of working out how much will his heartbeat have increased

-BARSIC- [3]

Answer:

12 beats per minute after 30minutes

Step-by-step explanation:

Since we are told by how much his heartrate increased in 20 minutes, we can simply calculate how much it increased in 10 minutes and add that amount to the current heart rate to know how much his heartrate increased after 30 minutes of working out. Since 10minutes would be half of the 20minutes we simply divide the beats per minute by 2.

8 / 2 = 4 beats per minute after 10 minutes

Now we simply add this to the beats per minute at the 20minute mark to calculate the beats per minute at 30minutes

8 + 4 = 12 beats per minute after 30minutes

3 0

3 years ago