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Andre45 [30]
2 years ago
14

What is the answer to 7^3 x 7^-5? I need it for an important test that I can’t fail. Please help.

Mathematics
1 answer:
Vilka [71]2 years ago
4 0
The answer fir sure is 1/49
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If you were to solve the system using the addition method, what would you multiply the first equation by in order to make the x'
Inessa05 [86]
2 times 2=4
multiply first equation by 2 to get
-4x+6y=12
then add to get

-4x+6y=12
<u>4x-2y=8 +</u>
0x+4y=20

4y=20
y=5

sub back
-2x+3y=6
-2x+3(5)=6
-2x+15=6
-2x=-9
x=9/2=4.5


the number to multiply by is 2
7 0
3 years ago
I’m not sure with this question help!
labwork [276]

Answer:  C.) 3 to the power of negative two, 1.3 x 10 to the power of negative one, 1/3, and 3 squared.

Step-by-step explanation:

3 to the power of negative 2 = 0.11111111111

3 squared is 1.73205080757

1.3 x 10 to the power of negative 1 = 0.13

1/3 converted to a decimal is 0.333

Now that we know what everything equals we know that anything that doesn't start with 3 squared is right and a little cheat is that only one of them start with 1/3 so we know that the second biggest is 1/3 so it is C.) 3 to the power of negative two, 1.3 x 10 to the power of negative one, 1/3, and 3 squared.

7 0
3 years ago
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What is a^2+15^2=17^2<br><br> I can't figure out what A is... HELP PLSSSSSSSSSSSSSSSSSSSSS<br> :3
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Answer:

Step-by-step explanation:

3 0
3 years ago
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If cos(x) = 0.5, then what is x?
Anestetic [448]

Answer:

=60 the second option.

Step-by-step explanation:

Given the trigonometric ratio, we can find the value of the angle by simply finding the inverse of the given ratio.

If for example Cos ∅= a, then ∅=Cos⁻¹a

If Cos (x)= 0.5, then x= Cos⁻¹ 0.5

Cos⁻1 0.5=60°

The angle whose sine is 0.5 is ∅=60°

5 0
3 years ago
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12. A family spends 1 hours traveling to a theme park, 6 hours at the
Rasek [7]

Answer:

4 hours

Step-by-step explanation:

1+1=2

6-2=4

6 0
3 years ago
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