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iogann1982 [59]
3 years ago
12

(-5c - 3) - 2 = -10c + 20 How would I find c?

Mathematics
2 answers:
Ksivusya [100]3 years ago
4 0
<span>(-5c - 3) - 2 = -10c + 20
-5c - 5 = -10c + 20
10c - 5c = 20 + 5
5c = 25
c = 25/5
c = 5

In short, Your Answer would be 5

Hope this helps!</span>
slava [35]3 years ago
3 0
(-5c-3)-2 = -10c+20
-5c-5=-10c+20
-5c+10c=20+5
5c=25
c=25/5
C=5
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A triangle was dilated by a scale factor of 6. If sin aº
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Answer:

24 units

Step-by-step explanation:

A triangle was dilated by a scale factor of 6. If sin a° = four fifths and segment DE measures 30 units, how long is segment EF?

triangle DEF in which angle F is a right angle, angle D measures a degrees, and angle E measures b degrees

15.5 units

24 units

30 units

37.5 units

From the description:

angle D measures a degrees

opposite to angle D is side EF

side DE (which measures 30 units) is the hypotenuse of the triangle.

We also know that

\sin (a) = \frac{4}{5}

\sin (a) = \frac{opposite}{hypotenuse}

From definition:

\sin (a) = \frac{opposite}{hypotenuse}

Replacing:

\frac{4}{5} =\frac{ EF}{DE} \\\\EF = \frac{4}{5} *DE\\\\EF = \frac{4}{5} *30 \\\\= 24 units

8 0
3 years ago
4. Eric has 54 yards of fencing to use for a flowerbed. Some possible measurements are
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Answer:

the last one(26 by 22) not sure whether its D or E but yah

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
ASAP PLEASE HELP AND EXPLAIN TOO!!!!!!
VARVARA [1.3K]
Looking at number 4, you first have to look at the information that you have:
On tuesday he practiced for 1 5/6 hrs
Monday he practiced for 7/10 hrs
He is supposed to practice for 1 1/4 hr.
You could write questions like:
How much more did Marco practice on Tuesday than he is supposed to practice?
This works because it does indeed involve subtraction, you would be subtracting the amount that he should have practiced from the amount of time that he did practice. 
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6 0
3 years ago
A student dropped a textbook from the top floor of his dorm and it fell according to the formula s(t) = −16t 2 + 8√t , where t i
Sidana [21]

Answer:

<h2>-29.61m/s</h2>

Step-by-step explanation:

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V = d(s(t))/dt

s(t) = −16t² + 8t^1/2

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V = -32t+4t^-1/2

The average speed of the fall Using the fact that the pencil hit the ground in exactly 2.8 seconds, will be gotten by substituting t = 2.8 into the resulting equation.

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V = -32t+4/√2.8

V = -32+4/1.6733

V = -32+2.391

v = -29.61m/s

<em>Hence the average speed of the fall is -29.61m/s</em>

3 0
3 years ago
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8 0
3 years ago
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