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algol13
3 years ago
15

Help meeeeeeeeeeeeeeee

Mathematics
1 answer:
Molodets [167]3 years ago
4 0

Answer:

I dont know

Step-by-step explanation:

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3/5 - 3/5= ??? how do i do this problem i'm very confuse because i keep getting 1 1/5 but i know the answer is 0.5 or 0 but do u
Paul [167]

Answer:

-3.5+3.5=0

Step-by-step explanation:

6 0
3 years ago
4 square feet is equivalent to how many square yards?
s2008m [1.1K]

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4 square feet = 0.444444444 square yards

Step-by-step explanation:

5 0
3 years ago
Six different​ second-year medical students at Bellevue Hospital measured the blood pressure of the same person. The systolic re
mixer [17]

Answer: range= 26, variance= 80 and standard deviation= 8.94

Step-by-step explanation:

Range = highest - lowest

Range = 146 - 120

Range= 26

Let m be mean

M=mean=sum/n

Mean=(120+134+146+127+138+133) / 6

M=798/6

M=133

The standard deviation sample formula:

S.D = sqrt( Summation of |x-m|^2 / n-1)

Let start finding:

|x-m|^2

For 1st: |120-133|^2=169

For 2nd: |134-133|^2=1

For 3rd: |146-133|^2=169

For 4th: |127-133|^2=36

For 5th: |138-133|^2=25

For 6th: |133-133|^2=0

Summation of |x-m|^2 = 400

The standard deviation formula is :

S.D = sqrt( Summation of |x-m|^2 / n-1)

S.D= sqrt(400 / 5)

S.D=sqrt(80)

S.D= 8.94

Variance = (Summation of |x-m|^2 / n-1)

Variance= 400/5

Variance= 80

3 0
3 years ago
Read 2 more answers
Instructions: Solve the following equation for the variable given.
frutty [35]

Answer:

x = -1

Step-by-step explanation:

1/4 (4x - 4) = -2(6x + 7)

1x - 1 = -12x - 14

13x = -13

x = -1

7 0
3 years ago
(30 points, will mark as brainliest) I need help with my algebra 1 homework, its open book so don't worry I can ask on here.
vichka [17]

Answer:

Step-by-step explanation:

2.

y=kx

8=-4k

k=-2

so y=-2x

3.

eq.~of~line~is~y-4=\frac{4-4}{1+3} =\frac{0}{4} =0\\or~y=4\\or~y=0 x+4

4.

eq. of  line is y-5=4(x+2)

3 0
3 years ago
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