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damaskus [11]
3 years ago
6

Find the midpoint of (2, -1) (-6, 0)

Mathematics
1 answer:
bagirrra123 [75]3 years ago
8 0

Answer: (-2,-\frac{1}{2} )

Step-by-step explanation:

Add up both x's and y's and divide them by 2

(X_m,Y_m)=(\frac{X_1+X_2}{2},\frac{Y_1+Y_2}{2})

(X_m,Y_m)=(\frac{2+(-6)}{2},\frac{-1+0}{2})

(X_m,Y_m)=(\frac{-4}{2},\frac{-1}{2})

(X_m,Y_m)=(-2,-\frac{1}{2} )

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Evaluate the expression below when x = 7 and y = 3.5: 2x + 5y
adell [148]

Answer:

31.5

Step-by-step explanation:

2(7)+5(3.5)

14+17.5

31.5

3 0
3 years ago
kayla has a T shirt store. she sold three times as many white T shirts as blue T shirts, she sold a total of 48 T shirts. how ma
bezimeni [28]

WT is white T shirts

BT is blue T shirts, and WT=3BT

WT+BT=48

3BT+BT=48

4BT=48

BT=12 so WT =3×12=36

5 0
4 years ago
The sum of two numbers is 79. Three
Semmy [17]

Answer:

<u>The two numbers are 23 and 56</u>

Step-by-step explanation:

Let's say the two numbers are A and B.

We are told:

1)  A+B=79

2) 3A+5B=283

Let's take the first expression and solve for A:

A+B=79

A=79-B

Now use this value of A in the second expression:

3A+5B=283

3(79-B)+5B=283

237-3B+5B=283

2B = 46

B = 23

Since B=23, we know from 1) that

A+B=79

A+23=79

A = 56

<u>CHECK:</u>

Does A+B=79?  

        56+23 = 79?  <u>YES</u>

Does 3A+5B=283?

3(56)+5(23)=283

168  + 115 = 283?  <u>YES</u>

7 0
2 years ago
Read 2 more answers
Consider a small population consisting of the 100 students enrolled in an introductory statistics course. Students in the class
Ray Of Light [21]

Answer:

5 ; 0.728 ; 0.00002

Step-by-step explanation:

According to the Central limit theorem, for a normal distribution, the population mean equals the sample mean., Hence the population mean, μ = sample mean = 5

The standard deviation of sampling distribution :

Standard deviation / sqrt(n)

σ / sqrt(n)

σ = 3 ; n = 17

3 / sqrt(17)

3 / 4.1231056

= 0.7276

= 0.728

3.)

P(x < 2) :

Using :

Z = (x - mean) ÷ s/sqrt(n)

P(x < 2) = (2 - 5) ÷ 3/sqrt(17)

P(x < 2) = -3 / 0.7276068

P(x < 2) = - 4.1231060

Z < - 4.123 = 0.00002 (Z probability calculator).

7 0
3 years ago
Can someone help me again please. I will pay extra fr please
fgiga [73]

Answer:

y = 3x + 3

Step-by-step explanation:

First, you check for the y-intercept, which is 3 for this equation.

In order to find the slope, pick two points and apply the slope formula.

I would just use rise/run. The slope should be 3/1.

3 0
3 years ago
Read 2 more answers
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