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Leviafan [203]
3 years ago
12

Multiply. -5•-1/7•4/8. Write your answer in simplest form.

Mathematics
2 answers:
krok68 [10]3 years ago
8 0

Answer:

The answer is \frac{5}{14}.

Step-by-step explanation:

1. -5 × \frac{-1}{7} =  \frac{5}{7}

2.  \frac{5}{7} · \frac{4}{8} = \frac{20}{56}

3. Simplify:

\frac{20}{56}  = \frac{5}{14}

Sphinxa [80]3 years ago
7 0

Answer:

5/14

Step-by-step explanation:

Multiply.

(-5 × -1 × 4) / (7 × 8)

20/56

Simplify.

5/14

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Crank

Hello!

Solve for x:

4(2x+25)=20

Distribute the 4 to the numbers inside the parenthesis.

8x + 100 = 20

Subtract 100 from both sides of the equation to get 8x by itself.

8x = -80

Divide both sides by 8

x = -10

3 0
3 years ago
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If theta is a positive acute angles find theta when <br>2 sin^2 theta + 3 cos theta =3​
MArishka [77]

Answer:

Theta = 0, 60 degrees.

Step-by-step explanation:

2 sin^2 theta + 3 cos theta = 3​

Using the identity sin ^2 theta = 1 - cos^2 theta :

2(1 - cos^2 theta) + 3 cos theta  = 3

2 - 2cos^2 theta) + 3 cos theta  = 3

2 cos^2 theta - 3 cos theta   + 3 - 2 = 0

2 cos^2 theta - 3 cos theta   + 1 = 0

(2 cos theta - 1)(cos theta - 1) = 0

cos theta = 1/2 , cos theta = 1

Theta = 60 degrees or theta = 0

6 0
2 years ago
Sally is 10 years old. Her mother is five times older. How old Sally's mom?
Marat540 [252]
Sally is 10 years old. <span>Her mother is five times older. </span>If this is put into an equation: x = (age of sally)(5)
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Sally's mom is 50 years old.
8 0
2 years ago
Click here What is the average rate of change for this exponential function for the interval from x=2 to x = 4? 15 10 -5 5 10 O
Triss [41]

Answer:

c. 6

Step-by-step explanation:

Given

See attachment for graph

Required

Average rate of change

This is calculated as:

Rate = \frac{f(b) - f(a)}{b - a}

Where

(a,b) = (2,4)

So, we have:

Rate = \frac{f(4) - f(2)}{4 - 2}

Rate = \frac{f(4) - f(2)}{2}

Using the attached graph, we have:

f(2) = 4

f(4) = 16

So, we have:

Rate = \frac{16- 4}{2}

Rate = \frac{12}{2}

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4 0
2 years ago
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Answer:

For every 15 students scoring in the 60's there were 9 students scoring in the 70's.

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