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mamaluj [8]
3 years ago
10

Formulate a system of equations to represent this situation, with f = the amount of money that Frank spent and r = the amount of

money that Rachel spent. Frank and Rachel spent a total of $15.75. If Rachel spends twice as much money as Frank, how much money did they each spend?
A)
B)
C)
D)
Mathematics
1 answer:
dem82 [27]3 years ago
4 0

Answer:

A

Step-by-step explanation:

I just did it

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A man who is 6 ft tall is standing next to a flagpole. The shadow of the man is 3.5 ft and the shadow of the flagpole is 17.5 ft
rjkz [21]

Answer: 30 ft

Step-by-step explanation:

Cross multiply:

6 : 3.5

x : 17.5

Then divide 105 with 3.5x.

105/3.5x = 30

5 0
3 years ago
Properties of the normal distribution include?
V125BC [204]

Answer:

Properties of a normal distribution

The mean, mode and median are all equal.

The curve is symmetric at the center (i.e. around the mean, μ).

Exactly half of the values are to the left of center and exactly half the values are to the right.

The total area under the curve is 1.

Step-by-step explanation:

6 0
3 years ago
Find the slope of the graph of the relation y^3 − xy = −6 at the point (7, 2).
mezya [45]
Yay, implicit differnentiation

when you take the derivitive of y, you multiply it by dy/dx
example
dy/dx y^2=2y dy/dx

for x, the dy/dx dissapears

ok
so differnetiate and solve for dy/dx

3y² dy/dx-(y+x dy/dx)=0
expand
3y² dy/dx-y-x dy/dx=0
3y² dy/dx-x dy/dx=y
dy/dx (3y²-x)=y
dy/dx=y/(3y²-x)

so at (7,2)
x=7 and y=2
dy/dx=2/(3(2)²-7)
dy/dx=2/(3(4)-7)
dy/dx=2/(12-7)
dy/dx=2/5

answer is 2/5
5 0
4 years ago
A cat weighs more or less than one ounce????
Delvig [45]

Answer:

i believe more than 1 ounce let me know if im wrong

Step-by-step explanation:

4 0
3 years ago
(3.0*10^6)(2.5*10^5) equals what
alekssr [168]

The answer is 750000000000

7 0
3 years ago
Read 2 more answers
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