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Alex73 [517]
4 years ago
11

You can earn money by babysitting for $8.00 per hour and by raking leaves for $7.00 per hour.

Mathematics
1 answer:
malfutka [58]4 years ago
5 0

Answer:

A=9-B  

Plug in  

(9-B)8+7B=68  

72-8B+7B=68  

72-B=68  

72-68=B  

B=4 (Raking leaves hours) so A (Babysitting's hours) 9-4=5  

Check it  

4x7+5x8=68

Step-by-step explanation:

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Set up a linear system and solve.
liubo4ka [24]

Answer:

The two integers are 23 and 12

Step-by-step explanation:

Let the two integers be f and g

Let f be the biggest and g the smallest integer

From the first statement, the sum of the two integers is 35 i.e

f + g = 35. (1)

From second statement, we were told that when the smaller integer is subtracted from twice the larger, the result is 34 i.e

2f — g = 34. (2)

Now we'll solve by elimination method as follows:

Add equation (2) and (1) together:

2f — g = 34

+ f + g = 35

3f = 69

Divide both side by the coefficient of f i.e 3

f = 69/3

f = 23

Substituting the value of f into equation(1)

f + g = 35

23 + g = 35

Collect like terms

g = 35 — 23

g = 12

The two integers are 23 and 12

4 0
3 years ago
The sign of the product of –35 and –625 is (positive, negative, zero)
ziro4ka [17]

Step-by-step explanation:

-35 x - 625 = 21875 so positive

263 x 0 = 0 so zero

-21 x 451 = - 9471 so negative

-350 x 89 = - 31150 so negative

3 0
3 years ago
Read 2 more answers
Jim bought a round picnic table. The diameter of this table is 12. What is the area and circumference of Jim’s picnic table?
lianna [129]
The equation for area is pi times r^2.
Here the diameter is 12, so the radius would be 6. (Diameter is twice the radius.)
Substituted this is pi times 6^2.
The area for the picnic table is about 113.097
______________________________________

The equation for circumference is 2 times pi times r.
Substitute, 2 times pi times 6.
The circumference is about 37.699
4 0
3 years ago
Read 2 more answers
Sal is tilling his entryway floor plan is drawn in the unit rate each unit grid each unit length represent one food tile cost 1.
mel-nik [20]

Answer:

24

Step-by-step explanation:

its 24

7 0
3 years ago
2.5y + 3x=7 5x - 2.5y = 5
weeeeeb [17]
2.5y + 3x=7 (1st)
5x - 2.5y = 5 re-write -2.5y + 5x = 5 (2nd)

2.5y + 3x=7 (1st)
-2.5y + 5x = 5 (2nd)
---------------------------add
8x = 12
  x = 12/8 = 1.5

2.5y + 3x=7
2.5y + 3(1.5)=7
2.5y = 7 - 4.5
2.5y = 2.5
     y = 1

answer
solution (1.5 , 1)

6 0
4 years ago
Read 2 more answers
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