3 years ago

What is the product? (5r + 2)(3r − 4)

1 answer:

6 0

Distribute the first set of parenthesis

15r2−20r+6r−8
Combine like terms

15r2+(−20r+6r)−8
Simplify your answer

15r2−14r−8

*Answer is 15r^2−14r−8*

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Which expression represents the phrase, "one fifth the sum of 14 and a number"?

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Answer:

Step-by-step explanation:

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3 years ago

A construction company is planning to bid on a building contract. The bid costs the company $1400. The probability that the bid

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Answer:

$3,000

Step-by-step explanation:

There two possible outcomes:

There is a 3/4 chance that the bid is rejected for a value of -$1,400

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$E = \frac{3}{4}*(-1,400)+\frac{1}{4}*(17,600-1,400)\\E=\$3,000$

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3 years ago

The speed of boat in still water is 15km/hr if needs 4 more his to travel 63 km against the current of a river than it needs to

hram777 [196]

Answer:

$\frac{63}{15 - c} - \frac{63}{15 + c} = 4$

Step-by-step explanation:

The systems of equations are

Let us assume the rate of the current be c

Now actual speed against the current is (15 - c)

And, the actual speed with the current is (15 + c)

Here we applied the time formula i.e. distance by speed

Also the upstream time - downstream time = 4

Now the equations are

$\frac{63}{15 - c} - \frac{63}{15 + c} = 4$

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2 years ago

The closure property states that the sum of two polynomials is a .

bija089 [108]

Is a polynomial

hope this helped

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3 years ago

What is the Tenth COMMON FACTOR of 6 and 9? (DO NOT respond with the LCM of 6 and 9)

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GMC Answer : 3 because of there

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3 years ago