All categories

3 years ago

Help HELP HELP HELP HELP HELP

Mathematics

1 answer:

vodka [1.7K]3 years ago

8 0

Answer:

50 seconds

Solution: It is given that Clare is paid $90 for 5 hours of work. We know that $1 is equal to 100 cents. Hence, it take 50 seconds to earn 25 cents.

You might be interested in

Work out the value of (10^4)^2

Yuri [45]

Answer:

100000000

Step-by-step explanation:

(10^4)^2 key =

{(2.5)^4}^2 . = times

(2^4 . 5^4)^2

(2^4) ^2 (5^4)^2

2^4 ^.2. 5^4^.2

2^8 . 5^8

256. 390625

100000000

4 0

4 years ago

What is the slope between the two points? (6,8 ) and (-3, 8 )

Marta_Voda [28]

Answer:

slope=0

Step-by-step explanation:

Slope (m) = ΔY /ΔX =0

ΔX = -3 – 6 = -9

ΔY = 8 – 8 = 0

Distance (d) = √ΔX2 + ΔY2 = √81 = 9

Equation of the line:

y = 0x + 8

When x=0, y = 8

5 0

3 years ago

Read 2 more answers

The population standard deviation for the heights of dogs, in inches, in a city is 3.7 inches. If we want to be 95% confident th

Aleks04 [339]

Answer:

The minimum sample size that can be taken is of 14 dogs.

Step-by-step explanation:

The formula for calculating the minimum sample size to estimate a population mean is given by:

$n=\frac{z^{2}\sigma^{2}}{e^{2}}$

The first step is obtaining the values we're going to use to replace in the formula.

Since we want to be 95% confident, $1-\alpha=0.95 \Rightarrow \alpha=0.05$ .

Therefore we look for the critical value $z_{\alpha/2}=1.96$ .

Then we calculate the variance:

$\sigma = 3.7 \Rightarrow \sigma^{2}=13.69$

And we have that:

$e=2 \Rightarrow e^{2}=4$

Now we replace in the formula with the values we've just obtained:

$n=\frac{1.96^{2}*13.69}{4}=13.1479\approx 14$

Therefore the minimum sample size that can be taken to guarantee that the sample mean is within 2 inches of the population mean is of 14 dogs.

6 0

3 years ago

3/5÷33/5 find the quotient

defon

Flip 33/5

3/5 times 5/33
3 times 5 /5 times 33
15/165
Reduce
1/11

7 0

4 years ago

Working alone, it takes Julia 16 hours to clean an attic. Lea can clean the same attic in 15 hours. If they worked together how

egoroff_w [7]

How do you think we set this problem up?

7 0

3 years ago