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Sergeeva-Olga [200]
4 years ago
15

Use the grouping method to factor 4x3 + 20x2 – 3x - 15.

Mathematics
1 answer:
Pie4 years ago
6 0

Answer:

(x-5)(4x^2+3)

Step-by-step explanation:

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Find the number in the proportion <br> 2/12=5/x
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Answer: x = 30

2/12 x 5/x

(Cross Multiply)

2x = 60

x = 30

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You are at a grocery store and are trying to decide which box of popcorn you should buy. Pop Secret has 5 packets that costs $3.
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Step-by-step explanation:

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What is A decreased by 20% and then increased by 20% of that? Please show your work.
umka21 [38]

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8 0
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What is the midpoint of line AC
pishuonlain [190]

Answer:

N/A

Step-by-step explanation:

What is line AC, was there supposed to be a picture?

4 0
3 years ago
A florist prepares an order of daisies and roses. For every 5 daisies she orders 2 roes. What 2 equations show the relationship
Vsevolod [243]

Answer:

d = 2.5r and r = \frac{d}{2.5}

Step-by-step explanation:

Given

5 daises to 2 roses

Required

Determine the relationship between them

The question shows a direct proportion between number of daises and roses.

i.e.

d\ \alpha\ r

Where d = daises and r = roses

Convert the above expression to an equation

d = kr

Make k the subject

k = \frac{d}{r}

When d = 5 and r = 2;

k = \frac{5}{2}

k = 2.5

So, the first relationship between d and r can be gotten by substituting 2.5 for k in d = kr

So:

d = 2.5 * r

d = 2.5r ----------- (1)

Make r the subject in (1)

r = \frac{d}{2.5} ------------------------(2)

Hence, the relationships between d and r are:

d = 2.5r and r = \frac{d}{2.5}

6 0
3 years ago
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