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miss Akunina [59]
3 years ago
5

Could -2 be used as a base to rewrite 32? 64? why or why not ?

Mathematics
1 answer:
Lera25 [3.4K]3 years ago
7 0
32 NOT, because:

(-2)⁵ = (-2)(-2)(-2)(-2)(-2) = -32

64 YES, because:

(-2)⁶ = (-2)(-2)(-2)(-2)(-2)(-2) = 64
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Four less than 5 times a number is the same as 26 more than twice the number.
Tju [1.3M]

Answer:

False

Step-by-step explanation:

5x - 4 versus 2x + 26

Imagine x equals 1, then the equations would be:

5(1) - 4 and 2(1) + 26

1 and 28 are not equivalent.

Another example would be x = 6

5(6) - 4 and 2(6) + 26

26 and 38 are not equivalent.

No matter what you replace x with, the expressions are never equal.

7 0
3 years ago
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4. Benson sells vacuum cleaners on a commission. He earns $75 for each vacuum cleaner he sells.
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He would have to sell at least 19 vacuums.
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If Jose's present age is 3n, how old will he be in 5 years?
KatRina [158]

Answer:

3n + 5

Step-by-step explanation:

You can't add 5 to 3n. So in 5 years he will 3n + 5.

7 0
3 years ago
The circle's area?
shepuryov [24]

Step-by-step explanation:A≈50.27km²

d Diameter  

8

km

d

r

r

r

d

d

C

A

Using the formulas

A=πr2

d=2r

Solving forA

A=1

4πd2=1

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Questions and answers the answer is 50.27km

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3 years ago
If the 9th term of an A.P is 0, prove that its 29th term is twice its 19th term
Ghella [55]

Let the first term, common difference and number of terms of an AP are a, d and n respectively.

Given that, 9th term of an AP, T9 = 0 [∵ nth term of an AP, Tn = a + (n-1)d]

⇒ a + (9-1)d = 0

⇒ a + 8d = 0 ⇒ a = -8d ...(i)

Now, its 19th term , T19 = a + (19-1)d

= - 8d + 18d [from Eq.(i)]

= 10d ...(ii)

and its 29th term, T29 = a+(29-1)d

= -8d + 28d [from Eq.(i)]

= 20d = 2 × T19

Hence, its 29th term is twice its 19th term

6 0
3 years ago
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