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raketka [301]
3 years ago
14

out of 420 students enrolled in a recreational soccer program, 40% are sixth graders. How many students in the program are sixth

graders?
Mathematics
2 answers:
Novosadov [1.4K]3 years ago
6 0

THERE ARE 168 SIXTH GRADERS

XD LOL


Juliette [100K]3 years ago
5 0

0.4(420) = 4(420)/10

(0.4 is essentially 4/10)

1680/10 = 168

There are 168 sixth graders

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This is my last question by the way
Leni [432]

Part A:

There are 25 blocks for the length, and the length of each is 5.5 inches. 5.5x25=137.5

There are 9 blocks for the height, and each is 2.75 inches. 2.75x9=24.75

Since we're trying to find how much longer the length is to the width, we find the difference. 137.5-24.75=112.75

So part A answer is <em><u>112.75 (or 112¾)</u></em>

Part B:

We know the length is 137.5 and the height is 24.75. To find how many times longer the length is, we need to divide to see how many 24.75 can go into 137.5.

137.5÷24.75=5.55

So the answer to part B is <u><em>5.55. Given the context, the answer would probably be 5, because that's how many entire height can fit.</em></u>

<u><em /></u>

Sorry if it's wrong lol

8 0
3 years ago
A manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 445445 gram setting. Is
marusya05 [52]

Answer:

Yes there is sufficient evidence.

Null hypothesis; H_o ; μ = 445

Alternative hypothesis; H_o ; μ ≠ 445

Step-by-step explanation:

The null hypothesis states that there is no difference in the test which is denoted by H_o. However, the sign of null hypothesis is denoted by the signs of = or ≥ or ≤.

Meanwhile, the alternative hypothesis is one that defers from the null hypothesis. This therefore implies a significant difference in the test. Thus, the signs of alternative hypothesis is denoted by; < or > or ≠.

Now, the question we have is a two tailed test. Thus;

The null hypothesis is;

bag filling machine works correctly at the 445 gram setting which is;

H_o ; μ = 445

The alternative hypothesis is;

bag filling machine works incorrectly at the 445 gram setting which is;

H_o ; μ ≠ 445

8 0
3 years ago
What is the answer to the equation -7x-3x+2= -8x - 8
timama [110]

Answer:

x=5

Step-by-step explanation:

-7x-3x+2= -8x - 8

Add like terms

-7x-3x=-10x

-10x+2=-8x-8

+8x       +8x

-2x+2=-8

     -2  -2

-2x=-10

Divide by -2 to isolate the variable

x=5

7 0
2 years ago
Read 2 more answers
Find the cube of 2/3​
Murrr4er [49]

Answer:

8/27

Step-by-step explanation:

\huge \bigg( \frac{2}{3}  \bigg)^{3 }  =  \frac{ {2}^{3} }{ {3}^{3} }  =  \frac{8}{27}  \\

5 0
3 years ago
Read 2 more answers
Expand and simplify<br> (x - 1)(2x + 3)
meriva

Answer: 3x+2

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
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