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Alecsey [184]
3 years ago
9

Equivalent to 7^3 × 7^-2

Mathematics
2 answers:
SOVA2 [1]3 years ago
8 0

Answer:

7

Step-by-step explanation:

7^3 * 7^-2

We know that a^b * a^c = a^(b+c)

7^(3+-2)

7^1

7

mixas84 [53]3 years ago
3 0

Answer:

<h2><em><u>7</u></em></h2>

Step-by-step explanation:

{7}^{ - 3}  \times  {7}^{ - 2}

=  {7}^{3 - 2}

= <em><u>7 (Ans)</u></em>

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Which equation is equivalent to (1/3)^x=27^x+2?
ruslelena [56]
Ok so the answer is D because first I solved the equation because you can’t find which answer choice it is equivalent to if you didn’t solve it ... so I solved the equation and got x=-3/2 how I solved this is

3^-x = 3^3x+6 ... since the bases are the same, set the exponents equal
-x=3x+6..... move the variable to the left-hand side and change its side
-x-3x=6 ... collect like terms
-4x = 6..... divide both sides of the equation by -4 and I got x=-3/2
I don’t want this text to be that long so they both seem calculated the same way that’s why i got -3/2 hope that helps;-;
6 0
3 years ago
Two lines intersect. Find the value of b and c.<br> bº<br> 42°
yaroslaw [1]

Answer:

b=42 degrees

c= 138 degrees

Step-by-step explanation:

B and the 42 degrees shown are congruent angles so therefore both are 42 degrees

To find C: We know that combining the 42 degrees and Angle C would form a flat angle or 180 degree angle, so therefore

subtract 180 with 42 to get Angle C

180-42= 138

4 0
2 years ago
Read 2 more answers
Write as an expression: twice the product of the cube of a and the square of b
Tju [1.3M]

Answer:

the square root of 2(x^3 * x^2)

Step-by-step explanation:

twice means 2 and product means either division or multiplication (multiplication in this scenario because twice means multiply).  cubed means to the third power

note i don't know how to put a square root sign so i wrote it out

hope i helped

8 0
3 years ago
Read 2 more answers
A food manufacturer donates money to schools based on the number
VashaNatasha [74]

Answer:

5x=2100

x=2100/5

= 420

Step-by-step explanation:

8 0
3 years ago
A ladder is leaning against a brick wall so that the top of the ladder is even with the top of the wall. If you know that the he
ASHA 777 [7]

Answer:   the top of the ladder is at 24 feet from the ground

Step-by-step explanation:

Use the Pythagorean theorem to solve for the unknown, since we notice that the ladder is the hypotenuse of a right angle triangle formed by the horizontal distance from the wall to the base of the ladder, and the height of the top of the ladder against the wall. We need to find one of the triangle's sides given its hypotenuse and the other side, so we use the formula:

5 0
2 years ago
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