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2 years ago

15

Use the identity below to complete the tasks: a3 + b3 = (a + b)(a2 - ab + b2) Use the identity for the sum of two cubes to facto

r 8q6r3 + 27s6t3.

1 answer:

sleet_krkn [62]2 years ago

7 0

First Question Answer:

<em>a = 4x^2</em>

<em>b = 3</em>

Next Question Answer:

Factoring 8q6r3+27s6t3 =

(4x^2 - 3)(16x^4 + 12x^2 + 9)

in simpler words it's<em> Option B. </em>

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Select the expressions that are equivalent to 18m - 12.

krok68 [10]

Answer:

All the expressions other than option E, is equivalent to the expression 18m - 12.

Step-by-step explanation:

A. 6m - 4 + 6m -4 + 6m - 4

or 6m+6m+6m -4 -4 -4

or 18m -12

B. 12m + 6 - 6m -6

or 12m - 6m + 6 - 6

or 6m

C.6(3m - 2)

or 18m - 12

D.3(6m - 4)

or 18m - 12

E. 24n - 4² + 8 -6m

This option can not satisfy the given expression as it contains another variable as n.

4 0

2 years ago

Solve for $a$: $3a-7(3-a)=5$. Express your answer as a common fraction in simplest form.

SashulF [63]

Answer:

2.6

Step-by-step explanation:

just put one part of the equation in y1 and the other in y2 and hit 2nd trace 5 an hit enter 4 times

then it will bring a graph hit enter 3 time again and it will show u the answer at the bottom left

3 0

2 years ago

A given set of values is found to be a normal distribution with a mean of 140 and a standard deviation of 18.0. Find the value t

Alisiya [41]

Answer:

The value that is greater than 45% of the data values is approximately 137.84.

Step-by-step explanation:

The key is transforming values from this distribution to a z-score range and finding the corresponding value using a z-score table.

We are looking for a value x which attains a critical z-score that corresponds to the (100-45)%=55-th percentile:

$z_{0.55} = \frac{x-\mu}{\sigma}=\frac{x-140}{18}\implies x = 18\cdot z_{0.55}+140$

The critical z value (from z-score table, online) is: -0.12, so:

$x = 18\cdot z_{0.55}+140=18\cdot(-0.12)+140\approx137.84$

The value that is greater than 45% of the data values is approximately 137.84.

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2 years ago

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Rita is making a box from a 2 ft by Sit piece of plywood. The box does not need a top, so only five pleces

pantera1 [17]

Answer:

b

Step-by-step explanation:

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2 years ago

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How do i find each product by factoring the tens? 3x2, 3x20, and 3x200

RUDIKE [14]

Well, since it only asking about the product, you don't have to multiply the result
The product would be :
3 x 2 = 6
3x 20 = 3 x 2 x 10 = 60
3 x 200 = 3 x 2 x 10 x 10 = 600

hope this helps

6 0

2 years ago

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