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3 years ago

8(2+1) - 4+22 help with this plz

Mathematics

2 answers:

olga_2 [115]3 years ago

4 0

10z + 4

Distribute the parentheses, then add like terms

Jet001 [13]3 years ago

4 0

Answer is 10z+4. I provided the work so you can see the steps

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Latoya gets paid by the hour. During a 20-hour week, latoya earns 120. If she works only 15 hours, how much does she earn?

Alisiya [41]

Answer:

If Latoya works 15 hours only, she will make $90.

Step-by-step explanation:

Divide the total she earns from the total amount of hours she worked to get the amount she gets per hour.

120/20 = 6

Latoya gets paid $6 per hour.

Multiply 6 with 15

15 x 6 = 90

If Latoya works 15 hours only, she will make $90.

(<em>That's below minimum wage...</em>)

7 0

4 years ago

A stack of $20, $50, and $100 bills was retrieved as part of a police investigation. There were 42 42 more $50 bills than $1

Misha Larkins [42]

Answer:

The number of $100 bills was 27.

The number of $50 bills was 69.

The number of $20 bills was 189.

Step-by-step explanation:

Let x be the number of $20 bills, y the number of $50 bills, and z the number of $100 bills.

Since there are three unknown values, we need three equations to solve the problem, all of them can be extracted from the question itself, two as the ratios between different bills and the last one as the sum of the total value of the money :

$y=z+42\\x=7*z\\20x+50y+100z = 9,930$

Substituting the first equations into the last, it is possible to find the value for z:

$20(7z)+50(z+42)+100z = 9,930\\z=\frac{9,930-2100}{290} \\z=27$

Knowing that there were 27 $100 bills, we can go back to the first two equations to find x and y:

$y=z+42=27+42\\y= 69\\x=7*z=7*27\\x= 189$

The number of $100 bills was 27.

The number of $50 bills was 69.

The number of $20 bills was 189.

6 0

3 years ago

Need help with maths question hope you can help

Nastasia [14]

Answer:

4.2

Step-by-step explanation:

surface area of a cube

$since \: all \: side \: in \: a \: square \: are \: equal$

$h$

4 0

4 years ago

If 6 pounds of grapes costs $1.89, how much would 15 pounds of grapes cost?

Alja [10]

So divide 1.89 by 6 to see how much would one pound of grape be
1.89/6=0.315
Then multiply 0.315 (price for one pound of grape ) by 15
0.315*15 =4.725 $for 15 pounds of grape

8 0

3 years ago

Please help thank you so much if you do

LekaFEV [45]

Answer:

400

Step-by-step explanation:

6 0

3 years ago