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Alja [10]
3 years ago
10

Joseph gives a math test to all the students in a middle school and notices that taller students have higher scores. He conclude

s that
taller people are better at math. This conclusion is
A)
not justified, since the taller students could have cheated.
B)
justified, especially if it can be repeated on a second test.
not justified, since taller students have had more math in school
D)
justified, assuming that the test was given fairly to all students.
Mathematics
1 answer:
MariettaO [177]3 years ago
7 0

Answer:

D) justified, assuming that the test was given fairly

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A fruit stand has 5 bags of apples with 8 apples in each bag if there are 3 more aples on the shelf next to the bags how many to
trapecia [35]

Answer:

43

Step-by-step explanation:

So if there are 5 bags which each have 8 apples in them and we need to find out how many apples there are all we have to do is multiply 8 x 5 = 40

But there are 3 more apples off to the side so we just take 40 and add 3 to it.

40 + 3 = 43

5 0
3 years ago
Solve the following for equation a. <br> 8 = a/b
ruslelena [56]

Answer:

a=8b

Step-by-step explanation:

To do this we just need to isolate a

so we can multiply the equation by b

then we will get

a=8b

3 0
3 years ago
76 cm a 52 cm Find the area of the regular pentagon (the answer has one digit after the decimal point)​
alekssr [168]

Answer:

98.8 cm²

Step-by-step explanation:

Hi there!

A=\frac{1}{2} Pa where P is the perimeter of the pentagon and a is the apothem (the line going from the center of the pentagon one edge)

<u>1) Find the perimeter</u>

P=5l where l is the side length

Plug in the side length 7.6 cm

P=5(7.6)\\P=38

Therefore, the perimeter of the pentagon is 38 cm.

<u>2) Find the area</u>

A=\frac{1}{2} Pa

Plug in the perimeter (38) and the apothem (5.2)

A=\frac{1}{2} (38)(5.2)\\A=\frac{1}{2} (38)(5.2)\\A=\frac{1}{2} (197.6)\\A=98.8

Therefore, the area of the pentagon is 98.8 cm².

I hope this helps!

5 0
3 years ago
2. Is 4x – 3 = 19 true, false, or open? <br> A)true<br> B)false<br> C)open
ElenaW [278]

Answer: B. False

Step-by-step explanation: Because you do

4x - 3 = 19

+3 +3 =4x = 22

You divide 4x divide by 4 and you get x

Then you divide 22 by 4 and get 5.5

So the answer is X = 5.5

6 0
3 years ago
A number added to 3 is equal to negative 5, find the number​
anzhelika [568]

Answer:

-8

Step-by-step explanation:

An equation at represents this situation is:

-5 = 3 + x

Find x by;

-5 - 3 = -8

So x is -8:

-5 = 3 + -8 (TRUE)

Hope this helps

6 0
3 years ago
Read 2 more answers
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