the different of two numbers is 18 twice the smaller number is 56 less than three times the larger what are the numbers

Answers

Answer 1

Answer: Hello,
Let a the greater number
b the smaller one

a-b=18
2b=3a-56
==>
a-b=18 |*(-2)
3a-2b=56

==>a=56-2*18
==>a=20 and b=a-18=2

Proof a-b=20-2=18
2=3*20-56

Numbers are 20 and 2.

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On Tuesday Donovan earned $9 for 2 hours of babysitting on Saturday he babysat for the same family and earned 31.50 how may hours did he babysit on Saturday

Answers

Hi there! :)

Answer:

Donovan babysat for 7 hours on Saturday in order to earn $31.50.

Step-by-step explanation:

In order for you to answer your question, you'll need to use the cross product method:

$9 → 2 hours

$31.50 → X hours

(2 × 31.50) ÷ 9 = X hours

63 ÷ 9 = X hours

7 = X hours

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

Answer:

To know the answer we'll have to divide 9 by 2 to know how much money Donovan would make in one hour.

9 ÷ 2 = 4.5

So that means Donovan makes $4.05 dollars per hour.

Now we'd divide $31.50 by $4.05 or, 31.50 ÷ 4.5 =

Which means that Donovan babysat for 7 hours.

Hope this helps.

Write the fraction in decimal notation 3 1/100

Answers

3.01 is the decimal notation for 3 1/100. You keep the three in the ones place. 1/100 is a decimal. If you use long division or a calculator, you can see that 1/100 is 0.01.

WUTY guerrITOSTITUTO PETTITUUTTOIVOITETTOGO
Determine the equation of the line perpendicular to the line y = -8 through the point (-4,-2),
The line ys -8 is
The line perpendicular to the line y = -8 is
The equation of the line perpendicular to the line y = -8 through the point (-4,-2) is

Answers

Answer:

Determine the equation of the line perpendicular to the line y = –8 through the point (–4, –2).

The line y = –8 is

✔ horizontal

The line perpendicular to the line y = –8 is

✔ vertical

The equation of the line perpendicular to the line y = –8 through the point (–4, –2) is

✔ x = –4

Step-by-step explanation:

i got it right

Answer:

-x-6=y

Step-by-step explanation:

Perpendicular slope is -1

-1(-4)+b=-2

B=-6

How do i solve this question 2+3=8-4 ?

Answers

Answer:

5=4

Step-by-step explanation:

5=4

just add then subtract

A horse's heart beats 440 times in 10 min a cow's heart beats 390 times in 6 min which animal has greater heart value

Answers

The cows heart has greater heart value
440/10=44
390/6=65
since 65>44, the cows heart has a higher value.

During the summer , you want to earn at least $150 per week. You can earn$10 per hour working for a farmer, and $5 per hour babysitting.you can work at most 25 hrs per week. -write a system of linear inequalities that models the situation-solve your system,and tell how many hours per week you would work babysitting
-if you work 10hrs per week on the farm and 12 hours per week babysitting,will you meet your goal?

Answers

x = nr. hrs working for a farmer;
y = nr. hrs. babysitting;
x + y <= 25;
10x + 5y >= 150

a) Solve the system => one of the solution is x =5; y = 20(babysitting)
b) 10 + 12 =22 <= 25; 10*10 + 5*12 = 160 >=150.

you can work only as a farmer 15 hours per week
10x+5y>=150 => 10 x >= 150- 5y :5 => 2x >=30-y => 30-2x <= y
x+y<= 25 =>
y>=30-2x
y<=25-x

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