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4 years ago

Factor out the greatest common factor 4a^4b-6a^2b^2+12a^3b

Mathematics

1 answer:

inna [77]4 years ago

5 0

4a^4b - 6a^2b^2 + 12a^3b

2a^2b (2a^2 - 3b + 6a)

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Solve for X: x + 8 = -x + 4

rusak2 [61]

Answer: x=-2

Step-by-step explanation: Isolate the variable by dividing each side by factors that don't contain the variable.

Hope this helps you out.

6 0

3 years ago

Find the sum of these polynomials.(5x2 - 4x + 2) + (3x² + 9x-8)=

dexar [7]

we have the expression

$(5x^2-4x+2)+(3x^2+9x-8)$

step 1

Group similar terms

$\begin{gathered} (5x^2+3x^2)+(-4x+9x)+(2-8) \\ Combine\text{ like terms} \\ 8x^2+5x-6 \end{gathered}$ <h2>The answer is option A</h2>

5 0

1 year ago

Kayla wants to find the width, AB, of a river. She walks along the edge of the river 65 ft and marks point C. Then she walks 25

AlladinOne [14]

Answer:

Part A) The triangles ABC and EDC are similar by AAA, because the three internal angles are equal in both triangles

Part B) The width of the river is about $39\ ft$

Step-by-step explanation:

we know that

If two triangles are similar, then the ratio of its corresponding sides is equal and its corresponding angles are congruent

Part A) we know that

In this problem , triangles ABC and CDE are similar by AAA, because its corresponding angles are congruent

m<DCE=m<ACB -----> by vertical angles

m<EDC=m<ABC -----> is a right angle

m<DEC=m<CAB -----> the sum of the internal angles must be equal to 180 degrees

Part B) we know that

The triangles ABC and EDC are similar -------> see Part A

therefore

$\frac{BC}{DC}=\frac{AB}{DE}$

substitute the values and solve for AB

$\frac{65}{25}=\frac{AB}{15}$

$AB=15*(\frac{65}{25})=39\ ft$

8 0

3 years ago

Molly spent 1 hour and 30 minutes swimming 5 laps in the river. If it took her the same time to swim each lap, how long would it

-Dominant- [34]

Answer:

126 minutes or 2 hours and 6 minutes

Step-by-step explanation:

Find how long it took her to swim one lap

1 hour and 30 minutes = 90 minutes

90/5 = 18

This means it took her 18 mins to swim each lap

18 · 7 = 126

It took her 126 minutes/2 hours and 6 minutes to swim 7 laps

3 0

4 years ago

An unbiased estimator is one for which: Group of answer choices its value always equals the value of the parameter it estimates.

m_a_m_a [10]

Answer:

its sampling distribution is centered exactly at the parameter it estimates.

Step-by-step explanation:

An unbiased estimator is an estimator that shows the correct statistic applied for the parameter of the population

Here correct represents that it should not be overestimated or underestimated. In the case when there is an underestimate or overestimate this means that there is a bias

So as per the given options the above option is correct

3 0

3 years ago