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san4es73 [151]
3 years ago
6

Help me please this is due in a couple minutes

Mathematics
1 answer:
dsp733 years ago
8 0

Answer:

v=0.79x+3.99

f=1.89x+5.49

combined cost: 2.68×+9.48

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3. Sophie and Jackie each have a collection of baseball cards, Jackie has 5 more cards than
IRISSAK [1]

Answer:

Sophie has 12.5 cards

Step-by-step explanation:

Let

x -----> number of cards Sophie has

y -----> number of cards Jackie has

we know that

x+y=30 -----> equation A  

y=x+5 -----> equation B

Solve by substitution

Substitute equation B in equation A and solve for x

x+(x+5)=30

2x=30-5

x=12.5 cards

Note I assume the problem was invented without taking into account the result, because the amount of cards should be a whole number

5 0
2 years ago
The height of an ostrich is 20 inches more than 4 times the height of kiwi write and solve an equation to find the height of kiw
seropon [69]
The answer is 80 I think
3 0
3 years ago
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(27/64) to the power of -2/3
Nataly [62]
27/64^-2/3=16/9.......
3 0
3 years ago
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Jorge baked cookies for his math class's end-of-year party. There are 28 people in Jorge's math class including Jorge and his te
timurjin [86]
You have to multiply the number of people times the number of cookies they are each supposed to get

So, 28 x 3 = 84 cookies
7 0
3 years ago
Five friends are leaving a bar for home. Aside from the owner of the car, one other person is deemed able to operate the vehicle
erastova [34]

Answer:

4

Step-by-step explanation:

one person is deemed to drive and that person is fixed on the driver's seat no mater which arrangement.

we have now 2 more seats one adjacent to the driver and one rear (two combined).

so the total ways in which all five can be arranged is as follows.

driver, adjacent to him(1)  and three back.

driver adjacent to him (different person) and three back.

see the driver is always fixed so we can ignore him.

thus we when driver set fixed , on two remaining seats (adjacent to driver and the back )there can be 4 different combinations.

3 0
2 years ago
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