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topjm [15]
3 years ago
9

What is the product (5r + 2)(3r- 4)

Mathematics
2 answers:
NemiM [27]3 years ago
6 0

Answer:

product 15 r² - 14 r  - 8.

Step-by-step explanation:

Given  : (5r + 2)(3r- 4).

To find : What is the product.

Solution : We have given that (5r + 2)(3r- 4).

Distribute the 5r over (3r -4) and 2 over (3r -4).

5r (3r -4) + 2 (3r -4).

15 r² - 20 r + 6r - 8.

15 r² - 14 r  - 8.

Therefore, product 15 r² - 14 r  - 8.

Naddika [18.5K]3 years ago
5 0

This is what I came up with

15x^2 - 14x - 8

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Lucinda works as a tutor. She made $600 this week, working 12 hours. How much does she charge per hour for her tutoring?
Cerrena [4.2K]

Answer:

$7.14

Step-by-step explanation:

First we need to find out how many hours she worked during the whole week. WE multiply 12 by 7 and get 84. To find out how ,much she charges per hour, divide 600 by 84 and you get this amount.

5 0
3 years ago
Sailors once used a unit of length called a fathom to measure the depth of the water. Each fathom is equal to 6 feet. Which equa
ss7ja [257]

Answer:

y = x*(6 feet/1 fathom)

Step-by-step explanation:

We know the relation:

1 fathom = 6 feet.

We can write:

1 = (6 feet/1 fathom)

Now, remember that any number multiplied by 1 does not change.

Then suppose that we have a measure of 3 fathoms, then:

3 fathoms = (3 fathoms)*1

= (3 fathoms)*((6 feet/1 fathom)) = (3 fathoms/1 fathom)*(6feet)

= 3*(6 feet) = 18 feet.

So we changed the units by multiplying the original measure by  (6 feet/1 fathom)

Then, if x is the depth of water in fathoms and y is the depth of the water in feet, we can write:

y = x*(6 feet/1 fathom)

3 0
3 years ago
12(43)
IrinaVladis [17]
I’m not entirely sure how to answer this without a word problem, but from what I see, all you have to do is multiply the two numbers.
12 x 43= 516
5 x 88 = 440
8x 63= 504
7 x 28= 196
Usually, when you see a number followed by another number in parentheses, like here, that means to multiply.
3 0
3 years ago
Read 2 more answers
What is the measure of ZR in APQR? Round to the
geniusboy [140]

Answer:26°

Step-by-step explanation:

6 0
4 years ago
                          PLEASE ASAP!!
Yuki888 [10]
Y = mx + b    

m = slope = rise/run = 1/1 = 1

b = y -intecept = where the line and line-y meet (0,2) = 2


y = 1x + 2  <-answer

y = x + 2
7 0
3 years ago
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