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VladimirAG [237]
3 years ago
15

A researcher measures the mean time (in seconds) it takes two groups of children to complete an activity test. She finds that gr

oup A (M=4 seconds) compleated the task more quickly than group B (M=10 seconds). She then computes a weighted mean for both groups combined and calculates= 6. Based on the information provided, which group had a larger sample size?
Mathematics
1 answer:
Alex787 [66]3 years ago
4 0
Group B
_______________________
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Evaluate each expression. Enter the correct answers in the boxes. (60−6)×(13)3+27÷3= ( 60 − 6 ) × ( 1 3 ) 3 + 27 ÷ 3 = 82÷4×(2+3
11Alexandr11 [23.1K]

Answer:

2115

Explanation:

To evaluate the expression (60−6)×(13)3+27÷3 we use BODMAS

BODMAS is an acronym/rule in mathematics that dictates the order we should solve mathematical operations such as the above.

BODMAS stands for bracket first, order or of, division, multiplication, addition and then lastly subtraction

To solve the expression using BODMAS, we solve the brackets first

(60−6)×(13)3+27÷3 =54×39+27/3

Then division

=54×39+9

=2106+9

Then addition

=2106+9=2115

Answer=2115

4 0
3 years ago
William has $7.50 to spend at the pretzel shop. A pretzel costs $1.25 and a soft drink costs $0.90. He buys one drink and p Whic
Basile [38]

Complete Question

William has $7.50 to spend at the pretzel shop. A large pretzel costs $1.25 and a soft drink costs $0.90. He buys one drink and p pretzels. Which inequality can be used to find the number of pretzels William can buy?

a) 1.25p−0.9≤7.5

b) 1.25p+0.9≤7.5

c) 1.25p+0.9≥7.5

d) 1.25+0.9p≤7.5

Answer:

b) 1.25p+0.9≤7.5

Step-by-step explanation:

William has $7.50 to spend at the pretzel shop.

This means Williams can spend at least $7.50

A pretzel costs $1.25 and a soft drink costs $0.90. He buys one drink and ?pretzel

Therefore, the inequality can be used to find the number of pretzels William can buy is written as

1.25p+0.9≤7.5

Option b is the correct option

3 0
3 years ago
A wide screen television display measures approximately 15 inches high and 27 inches wide. A television is advertised by giving
gulaghasi [49]
The answer would be 31 in.

First do the Pythagorean theorem. 

225+ 729= 954

Then find the square root of 954 which is 30.88 repeating, so round up to 31 in.
3 0
3 years ago
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Mark recently moved to a new state. During his first month he visited five state parks. Each month after he visited two more. Ca
Zina [86]
I think it’s 5 7 9 11
3 0
4 years ago
Read 2 more answers
What is the value of X in the equation 8+ X equals three
Nastasia [14]

its the solution to 8+X=3 is X=-5

4 0
3 years ago
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