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AveGali [126]
2 years ago
10

For BOYS only, 12*12+13+78-90+56

Mathematics
2 answers:
Westkost [7]2 years ago
5 0

Answer:

201

Step-by-step explanation:

Agata [3.3K]2 years ago
3 0

Answer:

201

Step-by-step explanation:

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Please help me!!! I need it
ziro4ka [17]

Answer:

0.35865 and 0.35867

Step-by-step explanation:

for this number, the hundreths thousandths place is

0.358659 (bolded)

so, since the 9 rounds up, the estimated number would be 0.35866

the numbers before would be 0.35865 and after, 0.35867

6 0
2 years ago
300 30 3 0.3 follows what pattern
labwork [276]
Divide 10 each time.

300/10=30
30/10=3
3/10=0.3
0.3/10=0.03
0.03/10=0.003
etc.
3 0
3 years ago
A science teacher has a supply of 5% hydrochloric acid and a supply of 65% hydrochloric acid(HC1). How much of each solution sho
Sphinxa [80]
Assume that the amount needed from the 5% solution is x and that the amount needed from the 65% solution is y.

We are given that, the final solution should be 42 ml, this means that:
x + y = 42 ...........> equation I
This can also be written as:
x = 42-y .......> equation II

We are also given that the final concentration should be 45%, this means that:
5% x + 65% y = 45% (x+y)
0.05x + 0.65y = 0.45(x+y)


We have x+y = 42 from equation I, therefore:
0.05x + 0.65y = 0.45(42)
0.05x + 0.65y = 18.9 .........> equation III

Substitute with equation II in equation III as follows:
0.05x + 0.65y = 18.9
0.05(42-y) + 0.65y = 18.9
2.1 - 0.05y + 0.65y = 18.9
0.6y = 18.9 - 2.1
0.6y = 16.8
y = 28 ml

Substitute with y in equation II to get x as follows:
x = 42-y
x = 42 - 28
x = 14 ml

Based on the above calculations:
amount of 5% solution = x = 14 ml
amount of 65% solution = y = 28 ml
The correct choice is:
The teacher will need 14 mL of the 5% solution and 28 mL of the 65% solution.
6 0
3 years ago
Data was collected on the average winter temperature and the number of days with snow of a random groupof cities in the United S
fiasKO [112]

Answer:

d. negative correlation

Step-by-step explanation:

Two variables are positive correlated when one goes up or down the other goes in the same direction and they are negative correlated when one goes up or down the other variable goes in the other direction.

In this case, the higher the temperature rises, the less snow. Therefore we have a negative correlation

5 0
3 years ago
Find the exact circumference of a circle with the given radius. 5 inches C = 2.5 in. 10 in. 25 in.
notsponge [240]
If the given radius is 5 inches, then the circumference, C is 2pi r, or 2pi(5 inches) = 10pi inches.  You MUST include pi in your calculation of C.
8 0
3 years ago
Read 2 more answers
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