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3 years ago

Select the correct answer.

Mathematics

2 answers:

Masteriza [31]3 years ago

7 0

Answer: B

Step-by-step explanation: I just took the test

Effectus [21]3 years ago

3 0

Answer:c

Step-by-step explanation:

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the length of a rectangle is two feet greater then twice its width if the primeter is 25 find the width

Mademuasel [1]

Answer:

Step-by-step explanation:

Perimeter is simply length + width. They gave us that the length is 2 feet plus 2 times the width:

$25=(2w+2)+W$

Subtract 2 from both sides to get 23 = 2w + w

Combine like terms to get 23 = 3w

Divide by 3 to get $w=7 \frac{2}3}$ feet

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3 years ago

Find a formula for the nth term

maxonik [38]

Answer:

an = 2.5n -0.2

Step-by-step explanation:

an = 2.5n -0.2

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2 years ago

What value of k will make this expression equal to 0? <br><br> b • 3.8 • 2.72 • (k – 4)

Verizon [17]

4-4=0

anything x 0=0

your answer is 4

Hope this helps!

3 0

3 years ago

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A prime polynomial cannot be written as a product of lower-degree polynomials. Which polynomial is prime? a)8x2 – 10x – 3 b)8x2

Basile [38]

As already described above, the prime polynomial is that which can no longer be factored to yield a much simpler terms. From the given choices, that which cannot be factored is letter C.

10 0

3 years ago

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What is the value of a when we rewrite 8^x as a^-x/9

Andre45 [30]

Answer:

$a = \frac{1}{134217728}$

Step-by-step explanation:

Given

$8^x = a^{-x/9}$

Required

Find a

Take log of both sides

$log(8^x) = log(a^{-x/9})$

Apply law of logarithm

$x\ log(8) = (-x/9) log(a)$

Divide both sides by a

$log(8) = -\frac{1}{9} log(a)$

Multiply both sides by -9

$-9\ log(8) = log(a)$

Apply law of logarithm

$log(8^{-9}) = log(a)$

Cancel out log

$8^{-9} = a$

Rewrite as:

$a = 8^{-9}$

Apply law of indices

$a = \frac{1}{8^9}$

$a = \frac{1}{134217728}$

4 0

3 years ago