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Lapatulllka [165]
3 years ago
8

fred saves half as much as john. john saved four times as much as mary. together all three save $280 dollars. how much did each

person save
Mathematics
1 answer:
vazorg [7]3 years ago
7 0
F = 1/2 J = 2M
J = 4M

M + F + J = $280

M + 2M + 4M = $280
7M = $280

M = $280/7 = $40 

J = 4M = 4x40 = $160
F = 1/2 (160) = $80

40 + 160 + 80 = $280

Mary saved $40
Fred saved $80
John saved $160
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Linear: y=3x-5

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Okay, this is the last one. Ty for helping.
yawa3891 [41]

Answer:

128

Step-by-step explanation:

You get this by doing PEMDAS. We start with parenthises and then exponet so we do 4x4 which is 16 now we have 18-16+2 so we go in order and the anwser for the first line is 4 but we have an exponet so 16

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Which direction does the graph of f(x) = 9 − 3x2 + 1 open?
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What is the significance of the point of intersection of a pair of simultaneous equations
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Answer:

The point of intersection gives the solution set(s) of the associated system.

Step-by-step explanation:

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This could be a unique intersection, only one point or infinitely many intersection.

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3 years ago
On a recent trip to a local orchard, the Morgan family picked four different kinds of apples - Braeburn, Cortland, Fuji, and Rom
ivanzaharov [21]

Answer:

Morgan family picked 144 Braeburn apples, 96 Cortland apples, 72 Fuji apples and 48 Rome apples.

Step-by-step explanation:

Let B, C, F and R represent Braeburn apples, Cortland apples, Fuji apples, and Rome apples respectively.

We have been given that Morgan family picked a total of 360 apples. We can represent this information in an equation as:

B+C+F+R=360...(1)

We are told that Morgan family picked twice as many Braeburn as Fuji. We can represent this information in an equation as:

B=2F...(2)

We are told that Morgan family picked twice as many Cortland as Rome, that is:

C=2R...(3)

We are told that Morgan family picked 50% more Fuji than Rome, that is:

F=1.5R...(4)

Upon substituting equation (4) in equation (2), we will get:

B=2(1.5)R

B=3R

Now, each apple in in terms of Rome apples, so we will get:

3R+2R+1.5R+R=360

Let us solve for R.

7.5R=360

\frac{7.5R}{7.5}=\frac{360}{7.5}

R=48

Therefore, Morgan family picked 48 Rome apples.

Upon substituting R=48 in (3), we will get:

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Therefore, Morgan family picked 96 Cortland apples.

Upon substituting R=48 in (4), we will get:

F=1.5R\Rightarrow 1.5(48)=72

Therefore, Morgan family picked 72 Fuji apples.

Upon substituting F=72 in (2), we will get:

B=2F\Rightarrow 2(72)=144

Therefore, Morgan family picked 144 Braeburn apples.

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3 years ago
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