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3 years ago

How to estimate 36795 and 14467

1 answer:

8 0

first round each number to the nearest ten thousand and than add them up. if the thousands place is 1-4 round it down if its 5-9 round it up. hope this helped!

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There are six questions on Mathews test out of a 100 he got 66.67 what did he get on each of the questions if his score was 66.6

bezimeni [28]

Answer:

He scored 11.11 on each question if we assumed the score was distributed on the six question

Step-by-step explanation:

on the other hand, that score means he answer only four from the six question so he get on each question

16.675
16.675
16.675
16.675
0
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6 0

4 years ago

Read 2 more answers

At a different store, a dressmaker spent $16.45 on 2.5 yards of silk and cotton. Write the system of equations that represents t

Lerok [7]

Answer:

Step-by-step explanation:

The solution of system of equations is x=1.5 and y=2.75. It means, the yards of silk are 1.5 and yards of cotton are 2.75.

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3 years ago

Suppose that prior to conducting a coin-flipping experiment, we suspect that the coin is fair. How many times would we have to f

BabaBlast [244]

Answer:

153 times

Step-by-step explanation:

We have to flip the coin in order to obtain a 95.8% confidence interval of width of at most .14

Width = 0.14

ME = $\frac{width}{2}$

ME = $\frac{0.14}{2}$

ME = $0.07$

$ME\geq z \times \sqrt{\frac{\widecap{p}(1-\widecap{p})}{n}}$

use p = 0.5

z at 95.8% is 1.727(using calculator)

$0.07 \geq 1.727 \times \sqrt{\frac{0.5(1-0.5)}{n}}$

$\frac{0.07}{1.727}\geq sqrt{\frac{0.5(1-0.5)}{n}}$

$(\frac{0.07}{1.727})^2 \geq \frac{0.5(1-0.5)}{n}$

$n \geq \frac{0.5(1-0.5)}{(\frac{0.07}{1.727})^2}$

$n \geq 152.169$

So, Option B is true

Hence we have to flip 153 times the coin in order to obtain a 95.8% confidence interval of width of at most .14 for the probability of flipping a head

6 0

3 years ago

one number is less than a second number. twice the secind number is less 16 less than 4 times the first. find the smaller of two

bulgar [2K]

Answer:

The smaller number is 11

Step-by-step explanation:

The question is

One number is 3 less than a second number. Twice the second number is 16 less than 4 times the first. Find the smaller of two numbers

Let

x and y the numbers

x=y-3 ----> equation A

2y=4x-16 ----> equation B

Substitute equation A in equation B and solve for y

2y=4(y-3)-16

2y=4y-12-16

4y-2y=12+16

2y=28

y=14

x=14-3=11

6 0

4 years ago

How to do slope and graph -x+3y=15

Sedbober [7]

-x+3y=15

-x+x+3y=x+15

3y=x+15

3/3y==1/3x+15/3

y=1/3x+5

The slope is 1/3x.

5 0

4 years ago

Read 2 more answers