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nlexa [21]
3 years ago
8

What is (-7)^-1 and how do you do it

Mathematics
2 answers:
timofeeve [1]3 years ago
6 0

Answer:

-1/7 or -0.1438...

Step-by-step explanation:

When there is a negative exponent the function under the exponent goes into the denominator making the equation negative one seventh -1/7

Zolol [24]3 years ago
3 0

Answer:

-1/7

Step-by-step explanation:

First you need to understand negative exponents. Baisically it means 1/the number to the positive power. For this problem, it's

1/(-7)^1

-7^1=-7

(-7)^-1=-1/7

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In a lilac paint mixture , 40% of the. Mixture is white paint ,20%is blue and the rest red how many cups of red paint are used
fredd [130]

Answer: 40%

Step-by-step explanation: all percents add to 100%, so 40%+20%=60%, and 100%-60%=40%

4 0
3 years ago
The city of Hampton received money for improvements of the towns park. the park Committee put a random sample of 75 presidents f
Natasha2012 [34]

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3 years ago
Solve |2x - 5| = 4 I dont know what you solve for
ICE Princess25 [194]

Hello!

Answer:

\huge\boxed{x = 1/2, 9/2}

|2x - 5| = 4

Solve for the negative and positive expressions:

2x - 5 = 4

2x = 9

x = 9/2

------------

-(2x - 5) = 4

-2x + 5 = 4

-2x = -1

x = 1/2.

Therefore, the solutions are x = 1/2 and 9/2.

6 0
3 years ago
Which equation can be used to solve for b?<br> B<br> 5 cm<br> 10 cm<br> 30°
kati45 [8]

The Question is Incomplete The complete question with figure is below.

Answer:

Therefore the equation to solve for b is

\tan 30 = \dfrac{5}{b}

Step-by-step explanation:

Given:

In Right Angle Triangle ABC

∠C = 90°

BC = 5 cm

AB = 10 cm

∠A = 30°

To Find:

b = ?

Solution:

In Right Angle Triangle ABC Tangent identity we have

\tan A = \dfrac{\textrm{side opposite to angle A}}{\textrm{side adjacent to angle A}}

Substituting the values we get

\tan 30 = \dfrac{BC}{AC}\\\\\tan 30 = \dfrac{5}{b}

Therefore the equation to solve for b is

\tan 30 = \dfrac{5}{b}

6 0
3 years ago
What is the value of 6x+7y−56x+7y−5 when x = 2 and y = 3?
Bingel [31]
You need to Solve 62+73-562+73-5 which should get you -359
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3 years ago
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