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Klio2033 [76]
3 years ago
11

Step 3: Solving a system of equations to make comparisons between men and women

Mathematics
1 answer:
zysi [14]3 years ago
7 0

I am also not able to solve thi s question

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What are the equations of the lines with the given slope and y-intercept
Stella [2.4K]

Answer:

1. y=2x-3

2. y=4x-2

Step-by-step explanation:

8 0
3 years ago
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Trig: A sector of a circle has area 25 cm2 and centralangle
Alchen [17]

Answer:  Radius = 10 cm and Arc length = 5 cm

Step-by-step explanation:

The area of a sector with radius r and central angle \theta (In radian) is given by :-

A=\dfrac{1}{2}r^2\theta

Given : A sector of a circle has area 25 cm^2 and central angle  0.5 radians.

Let r be the radius , then we have

25=\dfrac{1}{2}r^2(0.5)\\\\\Rightarrow\ r^2=\dfrac{2\times25}{0.5}\\\\\Rightarrow\ r^2=\dfrac{50}{0.5}=100\\\\\Rightarrow\ r=\sqrt{100}=10\ cm

Thus, radius = 10 cm

The length of arc is given by :-

l=r\theta=10\times0.5=5\ cm

Hence, the length of the arc = 5 cm

3 0
3 years ago
5. You and a friend are comparing your card collections. How many cards does your friend have?
Alexandra [31]

Answer:

19 we kno

Step-by-step explanation:

we know each card is 1/3 of a mm as 81 times 1/3 is equal to 27 so simply divide your friends cards by 3 to find out the total

6 0
3 years ago
You have an SRS of size 8 and calculate the one-sample t statistic. What is the critical value t∗ such that (a) t has probabilit
Rudik [331]

Answer:

a) "=T.INV(1-0.02,7)"

And we got t_{crit}= 2.518

b) "=T.INV(0.85,7)"

And we got t_{crit}= 1.119

Step-by-step explanation:

For this case we have a sample size of n=8, so we can find the degrees of freedom like this:

df = n-1 = 8-1 =7

Part a

For this case we need a value who accumulates 0.02 of the area in the right of the t distribution with 7 degrees of freedom so we can use the following excel code:

"=T.INV(1-0.02,7)"

And we got t_{crit}= 2.518

Part b

For this case we need a value who accumulates 0.85 of the area in the left of the t distribution with 7 degrees of freedom so we can use the following excel code:

"=T.INV(0.85,7)"

And we got t_{crit}= 1.119

7 0
3 years ago
Caleb made a stack of popcorn balls on a table. He placed sixteen balls on the table, then added three more layers on top of the
Rudiy27

Answer:

Step-by-step explanation:

16 bottom + 12 1st layer + 8 2nd layer + 4 3rd layer

16+12+8+4 = 40 popcorn balls

7 0
2 years ago
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