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dlinn [17]
3 years ago
13

Pls help me

Mathematics
1 answer:
Kazeer [188]3 years ago
5 0

Answer:

a is the correct answer .....

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What makes this statement true? 7^-2
MaRussiya [10]

For this case we have:

By definition, one of the properties of the power, known as negative integer power, states that:

a ^{-b}can be written as\frac{1}{a ^ b}

Thus,  7 ^{-2} can be written as \frac{1}{7 ^ 2} . So:

\frac{1}{7 ^ 2}= \frac{1}{(7 * 7)}=\frac{1}{49}

Answer:

Power of negative integer exponent:

7^{-2} =\frac{1}{7 ^ 2}= \frac{1}{(7 * 7)}=\frac{1}{49}


7 0
4 years ago
Read 2 more answers
10
Elena-2011 [213]

Answer:

B

Step-by-step explanation:

a,b and c are the sides of a triangle if it satisfies:

a<b+c  , b<a+c and c<b+a

Here, a=4 and b=7

We have to find c

i.e. all those c which satisfies:

4<7+c , 7<4+c and c<4+7=11

A.3   it is not true since it doesn't satisfies second inequality

B.5   it is true

C.7   it is true

D.9   it is true

E.11   This is clearly false, since it doesn't satisfies inequality third

F.17 This is clearly false, since it doesn't satisfies inequality third

Hence, correct options are:

B.5

C.7

D.9

Still stuck? Get 1-on-1 help from an expert tutor now.

5 0
2 years ago
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A pencil cost 25 cents than a pen. what is the cost of the pencil? Using the algebraic expressions
LekaFEV [45]

Answer:

Step-by-step explanation

25-0=0

3 0
4 years ago
Find m+n <br><br> pls help !!!
podryga [215]

Answer:

  • m + n = 140

===============

<h3>Given</h3>

  • Two parallel lines,
  • Included triangle between the parallel lines,
  • Two interior angles of the triangle are m and n,
  • Another angle of 40°.

<h3>To find </h3>

  • The sum of angles m and n

<h3>Solution</h3>

As per given, the missing interior angle is corresponding with 40° angle.

Since corresponding angles are equal, the third interior angle of the triangle is 40°.

Sum of three interior angles is 180°:

  • m + n + 40 = 180
  • m + n = 180 - 40
  • m + n = 140
7 0
2 years ago
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Does anybody know the correct answer to this and is 100% that they do please if you I would appreciate it
Leya [2.2K]

Answer:

Your correct, don’t overthink it buddy!

Step-by-step explanation:

4x+9y+8x-2y

12x+7y

5 0
4 years ago
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