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lawyer [7]
2 years ago
7

Simplify 3 (5x -4) = 8x -2

Mathematics
2 answers:
sweet [91]2 years ago
7 0
The answer is 10/7
hope this helped.
enyata [817]2 years ago
5 0
3(5x-4)=8x-2
3×5x+3×-4=8x-2
15x-12=8x-2
7x-12=-2
7x=10
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Find the pay earned: 33 hours at $5.15 per hour
Inessa [10]
$169.95 

33*5.15=169.95
5 0
3 years ago
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Can someone answer this its just boxplots :)))
romanna [79]

Answer:

31 + 71 = 102

102/100

1.02

Step-by-step explanation:

7 0
2 years ago
Mrs. Miller sells a house for 179,000. If she earns a commission of 6%, how much money does she earn? ( can u also show me how u
Kryger [21]

Hi there!

Mrs. Miller earns a commission of 6% of 179,000

The word "of" is the same thing as a multiplication sign.

6% of 179,000 = 6% × 179,000

6% = 0.06

6% × 179,000 = 0.06 × 179,000

0.06 × 179,000 = 10,740


Your answer is: Mrs. Miller earns $10,740 of commission.


There you go! I really hope this helped, if there's anything just let me know! :)

5 0
3 years ago
Find the unit rate. Sean drove for three hours to get to his grandmas house 180 miles away. How many miles did he drive in one h
OleMash [197]

Answer:

60 miles

Step-by-step explanation:

For a unit rate the onemust go in the denominator.

x/1

Make a proportion

x/1 = 180/3

divide 180 by 3

you get 60

5 0
3 years ago
Marisol is being paid $792 to provide nutrition counseling, It took her 8 hours more than she expected, so
olchik [2.2K]

Answer: 44 hours.

Step-by-step explanation:

Marisol is being paid $792.

We know that the job took her 8 hours more than she expected, so if we define T as the time she expected, this job took her:

T + 8 hours.

The amount of money per hour that she expected is calculated as:

$792/T = X

And for those 8 extra hours, she won $4 less per hour, then we have:

$792/(T + 8hs) = X - $4

Then we have a system of equations:

$792/T = X

$792/(T + 8hs) = X - $4

To solve this, we can notice that in the first equation X is isolated, then we could replace that in the second equation to get:

$792/(T + 8hs) = $792/T - $4

Now we can solve this for T.

$792 = ($792/T - $4)*(T + 8hs)  = $792 + $792*(8hs/T) - $4*T + $32*hs

0 = $792*(8hs/T) - $4*T + $32*hs

Let´s multiply this both sides by T

0*T = ($792*(8hs/T) - $4*T + $32*hs)*T

0 = $792*8hs - $4*T^2 +$32*T*hs

This is a quadratic equation, where i will write this witout units so it is easier to read and follow:

0 = -4*T^2 + 32*T + 792*8

The solutions cab be found by using the Bhaskara´s formula, these are:

T = \frac{-32 +- \sqrt[2]{(32^2 - 4*(-4)*(792*8)} }{2*-4}  = \frac{-32 +-320}{-8}

Then the solutions are:

T = (-32 + 320)/-8 = -36 hours (This is a negative time, and it does not really have a meaning in this problem, so we can discard this option)

The other solution is:

T = (-32 - 320)/-8 = 44 hours.

Then we can conclude that she expected the job would take 44 hours in total.

5 0
2 years ago
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