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3 years ago

(-z-8)-(6z-5) HELP FAST

Mathematics

1 answer:

abruzzese [7]3 years ago

3 0

A is your answer -7z-3

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For what value of a does (1/9)^a+1 =81^a+1 x 27^2-a ? -4 -2 2 6

EastWind [94]

Answer:

- 4

Step-by-step explanation:

Using the rule of exponents

• $a^{m}$ × $a^{n}$ ⇔ $a^{(m+n)}$

• $a^{-m}$ ⇔ $\frac{1}{a^{m} }$

$(\frac{1}{9}) ^{a+1}$ = $9^{-(a+1)}$ = $3^{-2(a+1)}$

and right side

= $3^{4(a+1)}$ × $3^{3(2-a)}$

Hence

$3^{-2a-2}$ = $3^{4a+4}$ × $3^{6-3a}$

$3^{-2a-2}$ = $3^{a+10}$

Equating exponents on both sides gives

a + 10 = - 2a - 2 ( add 2a to both sides )

3a + 10 = - 2 (subtract 10 from both sides )

3a = - 12 ( divide both sides by 3 )

a = - 4

4 0

4 years ago

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2 3 E 4 5 I 6 8 what comes next

Georgia [21]

I think it is "N". This, because (2+3)=5 and E is the 5th letter of the alphabet. 4+5= 9 and I is the 9th letter of the alphabet. (6+8)= 14 So N should be correct I think. :)

8 0

3 years ago

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Simplify the one step equation

MAVERICK [17]

X ≤ 40
the answer to the question

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3 years ago

Find the value of x.

jarptica [38.1K]

Answer:

Step-by-step explanation:

2:1 ratio

Multiply 32*2

4 0

3 years ago

Choose the composition of translations that maps the image ΔPQR onto ΔP′Q′R′.

lana66690 [7]

Answer:

(x , y ) ---> (x + 6 , y - 3)

Step-by-step explanation:

(x , y ) ---> (x + 6 , y - 3)

P(-1 , 4) -----> P'(-1+6 , 4-3) = P'(5,1)

Comapre P and P' x-coordinate

-1 + a = 5

a = 5 +1 = 6

Q(-1, 2) ----->Q'(-1+6 , 2 -3)= Q'(5, -1)

R(3 , 1) ------> R'(3+6 , 1-3) = R'(9,-2)

8 0

3 years ago