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3 years ago

7

At a book sale,your sister uses an equal number of quarters and nickels to buy a $1.20 book. How many quarters and how many nick

els does she have?

1 answer:

REY [17]3 years ago

6 0

Answer:4 quarters and 4 nickels

Step-by-step explanation:

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Need help please I only have a little bit of time

dimaraw [331]

Answer:

A. 7/11

Step-by-step explanation:

5 0

3 years ago

8 is the difference of d and 3.75

maria [59]

Answer:

11.75

Step-by-step explanation:

From the question above 8 is the difference of d and 3.75

We are required to find the value of d

d-3.75= 8

d= 8 + 3.75

d= 11.75

Hence the value of d is 11.75

7 0

2 years ago

Hello does anyone know how to solve this?

Radda [10]

Hello from MrBillDoesMath!

Answer: 2 ^ -4 ( = 1/16)

Discussion:

- 4 log {8} 2 {8} is used instead of subscript notation

Basic property of logarithms is that exponents become multipliers and vice versa:

-4 log {8} 2 = log {8} (2^ -4)

Thank you,

MrB

5 0

3 years ago

Pediatricians work an average of 48 h per week. The standard deviation is 12 hours. What percentage of pediatricians work more t

cricket20 [7]

Answer: 2.28 %

Step-by-step explanation:

Given : Mean : $\mu=\ 48$

Standard deviation : $\sigma= 12$

The formula to calculate the z-score :-

$z=\dfrac{x-\mu}{\sigma}$

For x = 72

$z=\dfrac{72-48}{12}=2$

The p-value = $P(2$

$1-0.9772498=0.0227502\approx0.0228$

In percent, $0.0228\times100=2.28\%$

Hence, the percentage of pediatricians work more than 72 h per week = 2.28 %

4 0

3 years ago

Label the place value

e-lub [12.9K]

987,164.302
0: hundredths
1: hundreds
4: ones
3: tenths
6: tens
9: hundred thousand

4 0

2 years ago