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Andrej [43]
3 years ago
10

Pllssss help 7th grade math

Mathematics
1 answer:
MrRa [10]3 years ago
5 0
For this one you have to add all of the numbers. 5.5 plus 6.5 plus 4.5 plus 2.75 which equals to 19.25. Then you, 19.25/4=4.8125. All i did was turn the fractions into decimals to make it easier and do the math. 
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For each line, determine whether the slope is positive, negative, zero, or undefined.
strojnjashka [21]

Answer:

1. Undefined

2. Negative

3. Zero

4. Positive

Step-by-step explanation:

1. Undefined, the line moves in both directions vertically. It's impossible to tell what the slope is.

2. Negative, the line is decreasing at a constant rate, the slope is negative.

3. Zero, the line doesn't increase or decrease, therefore the slope is 0. (No changes)

4. Positive, the line is increasing at a large rate, the slope is positive.

5 0
2 years ago
Which triangle has 0 reflectional symmetries?
Tju [1.3M]

Answer:

the traingle that have 0 reflectional is the scalene traingle then its number one all defferent sides

give me brainliest if it true

3 0
3 years ago
Read 2 more answers
stat: sample of 780 adults in the U.S.A., it was found that 80 of those had a pinworm infestation. You want to find the 99% conf
Anettt [7]

Answer: 554

Step-by-step explanation:

If prior population proportion is known, then the formula to find the sample size is given by :-

n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2

As per given description, we have

p= 0.1

E=0.025

Critical z-value for 95% confidence : z_{\alpha/2}=1.96

Then,

n=0.1(1-0.1)(\dfrac{1.96}{0.025})^2=553.1904\approx554

Hence, the minimum sample size required = 554.

7 0
3 years ago
(4m-1)(m+2) Find Products<br> (With Work Please!)
katrin2010 [14]

Answer:

3m times 2m = 1m

Step-by-step explanation:

because 4m- 1 =3m and m+2 =2m

5 0
2 years ago
I need an answer quick. I am trying to finish this fast.
inessss [21]

Answer:

D, m<4 is 137°

Step-by-step explanation:

The answer would be D, because m<4 would be supplementary with the angle that's 43 degrees. Supplementary angles add up to 180, so this could be found through the following equation.

x + 43 = 180

x would represent <4

You would now subtract 43 from both sides.

x = 137

8 0
3 years ago
Read 2 more answers
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