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Digiron [165]
3 years ago
8

HELP TEN POINTS AND BRAINLEST IF RIGHT TROLL AND I WILL REPORT YOU!!!

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
3 0

Answer:

C. 1/9 sq yd

Step-by-step explanation:

1/3 * 1/3 = 1/9

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The Winkler family saved $100 month from the time Sarah was born until she started college. Sarah started collage on her 18th bi
Vlada [557]
4 year college Tuition: $28,800.00
Money Saved since Sarah was born: $21,600.00

So, no, her family did not save enough for college.
5 0
3 years ago
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If the coefficient of determination for a data set is 0.75 and the SSE for the data set is 13, what is the SST for the data set?
nadya68 [22]
Answer : SSE = 9
r^2 = 0.75
r^2 = 1 - (SSE/SST)
SSE/SST = 1 - r^2 = 1 - 0.75 = 0.25
<span>SST = 9/0.25 = 36</span>
8 0
3 years ago
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Can someone please help me.
Art [367]

I will give you everything I can do:

11)

Lets say Car A travels at x mph. That means Car B travels at x+2 mph.

Both of them are traveling towards each others, so we can say the total speed is 2x+2.

Now i takes 3 hrs and we know the distance.

Since R*T=D

Then 3(2x+2)=270

So 2x+2=90

2x=88

x=44

12)

To find perpendicular we want to find the opposite reciprocal of the original slope. Therefore the slope is 3/2.

Now we must find the equation of the line with the given variable.

First find b.

5=3/2*4+b

b = -1

So the equation of this line is:

y=3/2x-1

13) All work will be shown below.

6-3(-2-4x)=2(3(x-4)+7)

6+6+12x=2(3x-12+7)

12+12x=2(3x-5)

12+12x=6x-10

6x=-2

x = -1/3

14)

First we must find the amount each train traveled.

The speed of F train(Freight train)=x

The speed of P train(passenger train)=x+6

Their combined speed is 2x+6

It takes 2 hrs to cover 100 miles

So 2(2x+6)=100

2x+6=50

2x=44

x=22

So the freight train covered 44 miles and the passenger train covered 56 miles.

To find average speed you must do Total Distance/Total Time.

44/2 and 56/2

Which are 22 and 28.

The average speed of F train is 22 mph and average speed of P train is 28 mph.

15) Again opposite reciprocal.

3/5 -> -5/3

Work:

-4=-3*-5/3+b

-4=5+b

b=-9

y = -5/3x-9

16)

F=kx-kx0

First kx0 = 0

So F=kx

So x=F/k

4 0
3 years ago
Write the equation of the line that passes
Vinvika [58]

Answer:

The slope is -4.

Step-by-step explanation:

Slope formula:

\displaystyle \frac{y_2-y_1}{x_2-x_1}=\frac{rise}{run}

\displaystyle \frac{(-9)-(-5)}{1-0}=\frac{-4}{1}=-4

Therefore, the slope is -4, and the correct answer is -4.

Hope this helps!

8 0
2 years ago
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Please help.............:)
Alex787 [66]

Answer:

113

Step-by-step explanation:

Multiply

6 0
3 years ago
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