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3 years ago

Jordan wrote the numbers from 1 through 150. How many times did he write the digit 4 in the tens place?

1 answer:

6 0

40,41,42,43,44,45,46,47,48,49,140,141,142,143,144,145,146,147,148,149

Jordan wrote the number 4 in the tens place 20 times

I hope this helps :)

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(1.2 x 10^13) - (4 x 10^11)

Alexandra [31]

Answer:

the answer is 11,600,000,000,000

Step-by-step explanation:

pemdas

(1.2 x 10 ^13) - (4 x 10 ^11)

10^13 = 10,000,000,000,000 put that in scientific notation to make it simpler do same for 10 ^11

10 x 10^13

(1.2 x 10 x 10^13) - ( 4 x 10 x 10^11)

now solve the first equasion

12,000,000,000,000 - 400,000,000,000

subtract

11,600,000,000,000

3 0

3 years ago

A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtain

slega [8]

Answer: 8359

Step-by-step explanation:

The formula for sample size needed for interval estimate of population proportion :-

$n=p(1-p)(\frac{z_{\alpha/2}}{E})^2$

Given : The significance level : $\alpha=1-0.95=0.05$

Critical value : $z_{\alpha/2}}=z_{0.025}=\pm1.96$

Previous estimate of proportion : $p=0.32$

Margin of error : $E=0.01$

Now, the required sample size will be :-

$n=0.32(1-0.32)(\frac{1.96}{0.01})^2=8359.3216\approx8359$

Hence, the required sample size = 8359

5 0

3 years ago

Angela’s car leaked 6 ounces of oil in 9 days.what is the unit rate of the oil leak?

Rama09 [41]

Answer:

2/3 ounces leaked per day

Step-by-step explanation:

6/9 = 2/3

5 0

3 years ago

Property in equation. Find the value of n. 5+4= n+4

Nuetrik [128]

5+4 = n+4
9 = n+4
n = 5

4 0

3 years ago

The length and the breadth of a rectangular piece of land are 500m and 300m respectively. Find it’s area

katrin [286]

Area of a rectangle = Length x Breadth
The required area = 500 x 300
= 150000 m^2

6 0

4 years ago

Read 2 more answers