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allochka39001 [22]
2 years ago
12

H e l p p l e a s e

Mathematics
1 answer:
BigorU [14]2 years ago
3 0

Answer:

17.) 12

18.) 1/15

Step-by-step explanation:

2 ÷ \frac{1}{6}

This problem is asking how many \frac{1}{6} 's can go into 2 blocks.  If you divide one box into 6 parts, each tiny box will be \frac{1}{6} of the whole. Divide the other box into 6 parts as well, and you will get 12 of these \frac{1}{6} parts.  Check your answer by multiplying 12 by \frac{1}{6}.  The answer is \frac{12}{6} which is also equal to 2.

\frac{1}{3} ÷ 5

For this one, think of it as we have one big box divided into thirds. We want to divide each  \frac{1}{3} portion by 5. So you should have 5 tiny boxes in each \frac{1}{3} which gives you a total of 15 boxes.  But if we look at it as one big box divided into 15 parts, we know that each of those is \frac{1}{15}.  Check your answer by multiplying \frac{1}{15} by 5 and you get \frac{5}{15} which is equal to \frac{1}{3}.  

Let me know if you have any questions, and good luck!

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James is putting a brick border around his circular pool. The bricks are 1 foot in length. How many bricks does James need to bu
oee [108]

Answer: 6.28 feet

Step-by-step explanation:

We will solve this question using the perimeter of a circle. The perimeter of a circle is given as:

= 2πr

= 2 × 3.14 × 1

= 6.28

3 0
3 years ago
A major airline is concerned that the waiting time for customers at its ticket counter may be exceeding its target average of 19
sertanlavr [38]

Answer:

a) Statement is true

b) Statement incorrect. Company goal is to attend customer at 190 second at the most. So test should be one tail test  (right)

c) We have to reject H₀, and differences between sample mean and the hypothesized population mean should not be attributed only to sampling error

Step-by-step explanation:

a)  as the significance level is = 0,02  that means  α = 0,02 (the chance of error type I )  and the β (chance of type error II   is

1  -  0.02  =  0,98

b) The company establishe in 190 seconds time for customer at its ticket counter (if this time is smaller is excellent ) company is concerned about bigger time because that could be an issue for customers. Therefore the test should be a one test-tail to the right

c) test statistic

Hypothesis test should be:

null hypothesis                H₀   =  190

alternative hypothesis    H₀   >  190

t(s)  =  ( μ  -  μ₀ ) / s/√n      ⇒   t(s)  = ( 202 - 190 )/(28/√100 )

t(s)  = 12*10/28

t(s)  = 4.286

That value is far away of any of the values found for 99 degree of fredom and between  α  ( 0,025 and 0,01 ). We have to reject H₀, and differences between sample mean and the hypothesized population mean should not be attributed only to sampling error

If we look table  t-student we will find that for 99 degree of freedom and α = 0.02.

3 0
3 years ago
PLEASE HELP ASAP IM GIVING AWAY FREE POINTS PLUS BRAINLIEST FOR CORRECT ANSWER!!!!
MrRa [10]

Answer:

D. Lines coincide

Step-by-step explanation:

On dividing y/2y and 4/8 and x/2x you get 1/2. Since 1/2 is common answer for all the parts, lines will coincide.

5 0
2 years ago
Read 2 more answers
11. A recipe calls for 1/2
andreyandreev [35.5K]

Answer:

if jack uses 10 cups of sugar he will need to use 6 tsp of vanilla extract

Step-by-step explanation:

10 devided by 2 1/2= 4

and 1/2 multiplied by 4 is 6

3 0
2 years ago
Read 2 more answers
Someone please help me
kap26 [50]

Answer:

The answer is x = 4

Step-by-step explanation:

1. First you need to distribute the 3/4 * (x + 8). This looks like (3/4) * (x) + (3/4) * (8) = 9

2. Next you simplify the distributed equation, 3/4x + 6 = 9

3. Now subtract 6 from both sides, 3/4x = 3

4. Multiply both sides by 4/3, 4/x * 3/4x = 3 * 4/3

5. Simplify, x = 4

8 0
3 years ago
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