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s344n2d4d5 [400]
3 years ago
15

Please help me and use laws of exponents​

Mathematics
1 answer:
fredd [130]3 years ago
6 0

Answer:

5^2x ÷ 5^-3 = 5⁵(5×5×5×5×5)

5^2x ÷ 1/5³(5×5×5) = 3125

5^2x ÷ 1/125 = 3125

<u>5^2 × 4</u> = 3125

125

<u>5</u><u>⁸</u><u>(5×5×5×5×5×5</u><u>×</u><u>5</u><u>×</u><u>5</u><u>)</u> = 3125

125

<u>390625</u> = 3125

125

so the value X is = 4

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Triangle A B C is shown. Angle A B C is 95 degrees and angle B C A is 45 degrees. The length of A B is c and the length of B C i
NARA [144]

Answer:

(B)c = StartFraction (3) sine (45 degrees) Over sine (40 degrees) EndFraction

c=\dfrac{3 * \sin 45}{sin 40}

Step-by-step explanation:

In Triangle ABC is shown.

\angle A B C= 95 degrees

\angle B C A = 45 degrees.

|AB|=c

|BC|=3.0 cm

\angle A+\angle B+\angle C=180^\circ\\\angle A+95+45=180\\\angle A=180-140=40^\circ

Using the Law of Sines

\dfrac{a}{\sin A}=\dfrac{b}{\sin B}=\dfrac{c}{\sin C}

\dfrac{3}{\sin 40}=\dfrac{c}{\sin 45}\\\\$Cross multiply\\c*\sin 40 =3 * \sin 45\\\\c=\dfrac{3 * \sin 45}{sin 40}

The correct option is B.

6 0
3 years ago
Read 2 more answers
Which of the following statements best describes the value of the expression 7x + 6 when x = 5? A. The result is a fraction. B.
Ksivusya [100]

Answer: B) The result is a prime number

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

Explanation:

Replace x with 5. Then use PEMDAS to simplify.

7x+6

7*5+6

35+6

41

The expression 7x+6 is equal to 41 when x = 5.

The value 41 is prime because its factors are only 1 and 41.

8 0
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PLEASE HELP!! BRAINLIEST ANSWER AND FASTEST ANSWER GETS TON OF FREE POINTS...MATH WHIZZES, HELP ME OUT. FORGOT HOW TO DO THIS.
Julli [10]
Inscribed angles equal half of their arc length. So <D+ <B = 180
substitute: x+24+x+10 = 180 
solve: 2x + 34 = 180
2x= 146
x= 73
NOw find the measure of angle A:
<a = x + 15
<a = 73 + 15
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Hope this helps!
5 0
3 years ago
In the last election, 72% of the voters
mezya [45]

Answer:

<u>Option A) 19 to 25</u>

Step-by-step explanation:

In the last election, 72% of the voters were in favor of a new outlet mall and

28% were against it.

Vanessa creates random samples of the voters using the numbers 1 to 25.

So, There are 25 numbers to represent all the voters

The range of number that could be used to represent the voters who were against the new outlet mall = 28% of 25 numbers = 0.28 * 25 = 7

So, <u>7 numbers only</u>  could be used to represent the voters who were against the new outlet mall.

Check the options to find which range has only 7 numbers.

A) 19 to 25 ⇒ 7 numbers  

B) 7 to 18    ⇒ 12 numbers

C) 15 to 25 ⇒ 11 numbers

D) 1 to 18    ⇒ 18 numbers

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Answer:

7,200

Step-by-step explanation:

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