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3 years ago

4(4 + 7x) + x 2 -6x +5

Mathematics

1 answer:

balu736 [363]3 years ago

4 0

Factoring this equation would get you (x+21)(x+1)

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Maria read 78 pages in 3 hours. Reading at the same rate, she read 130 pages in 5 hours. Find the unit rate in pages per hour

Juliette [100K]

Your answer would be 26 pages per hour.

7 0

3 years ago

If p(a) = 2/3, p(b) = 4/5, and p(anb) = 3/5, what is P( AuB) ( the n is the arc shape direction, so is the u)

irina1246 [14]

By the inclusion/exclusion principle,

$P(A\cup B) = P(A) + P(B) - P(A\cap B)$

$P(A\cup B) = \dfrac23 + \dfrac45 - \dfrac35$

$P(A\cup B) = \dfrac{10}{15} + \dfrac{12}{15} - \dfrac9{15}$

$P(A\cup B) = \boxed{\dfrac{11}{15}}$

7 0

3 years ago

Mrs. Nguyen used 1.48 meters of netting to make 4 identical mini hockey goals. How much netting did she use per goal?

snow_tiger [21]

0.37 meters of netting

<h3>Further explanation</h3>

<u>Given:</u>

Mrs. Nguyen used 1.48 meters of netting to make 4 identical mini hockey goals.

<u>Question:</u>

How much netting did she use per goal?

<u>The Process:</u>

We will solve the problem of conversion or in other words the ratio or proportion.

Option A: the conversion

Mrs. Nguyen used 1.48 meters of netting to make 4 identical mini hockey goals.

Then for every 1 goal, she needs 0.37 meters of netting.

Because $\boxed{ \ 1 \ goal \times \frac{1.48 \ meters}{4 \ goals} = 0.37 \ meters \ of \ netting.}$

Option B: the ratio (or proportion)

In the ratio, we process as follows:

$\boxed{ \ 4 \ goals : 1.48 \ meters \ of \ netting \ }$

Both are divided by 4.

$\boxed{ \ 1 \ goals : 0.37 \ meters \ of \ netting \ }$

Thus, she uses 0.37 meters of netting per goal.

Alternative problem

How much netting did she use for 8 goals?

$\boxed{ \ 8 \ goal \times \frac{1.48 \ meters}{4 \ goals} = \ ? \ }$ meters of netting.

We cross out eight and four because they can be divided.

$\boxed{ \ 2 \times 1.48 \ meters = 2.96 \ meters \ of \ netting. \ }$

She uses 2.96 meters of netting to make 8 identical mini hockey goals.

<h3>Learn more</h3>

About the engine displacement of Kawasaki Ninja brainly.com/question/5009365
The clothing maker brainly.com/question/1594110
The unit conversion brainly.com/question/5416146

Keywords: Mrs. Nguyen, 1.48 meters of netting, to make 4 identical mini hockey goals, how much netting, she uses per goal, conversion, the ratio, proportion

8 0

4 years ago

I need help, please

nevsk [136]

Answer:

Step-by-step explanation:

1+1=2

4 0

4 years ago

What is the area of a circle with a radius of 6 inches? (Leave your answer in terms of Pi. This means: do not multiple by 3.14,

shusha [124]

12 pi inches square

4 0

3 years ago