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liraira [26]
4 years ago
12

What is the value of expression?

Mathematics
2 answers:
Andrei [34K]4 years ago
5 0
Use:a^n\cdot a^m=a^{n+m}\\\\5^{-8}\cdot5^{-4}=5^{-8+(-4)}=5^{-12}\\\\Answer:\boxed{D}
AURORKA [14]4 years ago
3 0
5 ^ ( - 8 - 4 ) = 5 ^ ( - 12 ) D.
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F(x)=-2x+3 how do you find x if f(x) = 11
NeX [460]
Since we know f(x)=11 all we need to do is substitute and solve. so
11=-2x+3 subtract 3 from both sides
8=-2x divide both sides by -2
-4=x
sub back in to check

-2(-4)+3=8+3=11 looks good
5 0
4 years ago
The measures of two complementary angles are complementary angles are in the ratio 1:3. What are the measures of the angles?
djverab [1.8K]

Answer:

Therefore the measures of the angles are 22.5° and 67.5°.

Step-by-step explanation:

Complementary Angles:

Two angles are Complementary when they add up to 90 degrees.

Example 40° and 50° are Complementary Angles.

If  'x' and 'y' are Complementary Angles the we have

x+y=90\°

Here,

Let the common multiple be 'x '

Then the the Complementary Angles will be 'x' and '3x'.

x+3x=90 ....property of Complementary Angles.

Solving the equation we get

4x=90\\\\x=\dfrac{90}{4}=22.5

Substituting 'x' values we get

x= 22.5°

3x = 3 × 22.5 = 67.5°

Therefore the measures of the angles are 22.5° and 67.5°.

4 0
3 years ago
Need help with question #5 thanks
Nataliya [291]

Answer:

25/4

Step-by-step explanation:

68x=425

x=6.25

25/4=6.25

7 0
4 years ago
Find the equation to the line below!!! Help!
svlad2 [7]

Answer:

y=4/5×-1 is the answer!

8 0
3 years ago
A grocery store had 38 employees but then they hired 4 more people. What is the percent change in their staff?
Setler79 [48]

Answer:

+ 10.53 % change

Step-by-step explanation:

Percent change is   4 more people added to 38

   4 / 38  * 100% = 10.53 %

5 0
3 years ago
Read 2 more answers
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