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Mice21 [21]
3 years ago
10

A grid of 100 squares shows 7 shaded squares what decimal number is represented

Mathematics
1 answer:
svp [43]3 years ago
6 0

0.07

Step-by-step explanation:

This is because 7/100 is 7% and as a decimal is 0.07

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Pls help answer will give brainliest
sweet [91]

Answer:

Step-by-step explanation:

Let x be the number.

Sum of five and 8 times a number: 8x + 5

Fifty plus one half of the number: 50 + (1/2)x

8x+5=50+\frac{1}{2}x\\\\8x+5-5=50+\frac{1}{2}x-5\\\\8x=45+\frac{1}{2}x\\\\8x-\frac{1}{2}x=45\\\\\frac{16x}{2}-\frac{1}{2}x=45\\\\\frac{16x-x}{2}=45\\\\\frac{15x}{2}=45\\\\x=45*\frac{2}{15}\\\\x=3*2\\\\x=6

3 0
4 years ago
A company has developed a new battery, but the average lifetime of all of the batteries it makes is unknown. In order to estimat
uranmaximum [27]

Answer:

<h2>The answer here would be <u>Statistic</u>.</h2>

Step-by-step explanation:

  • In Statistics,Statistic is a term which refers to the values or estimates obtained from the sample to evaluate the actual population parameters.
  • In this instance,observe that the average lifetime of the sample of 500 batteries tested comes out to be 225 hours., which is used to estimate the actual average lifetime of all the batteries developed by the company,which is also the population of interest in the concerned study.
  • Hence,the average lifetime of the sample of 500 batteries of 225 hours is a sample Statistic which can be tested to determine the actual average lifetime of the all the batteries produced by the company.
4 0
3 years ago
Tickets to the school play are $10 for adults, $4 for students and $3 for senior citizens. There were 670 tickets sold for Thurs
joja [24]

Answer:

500

105

Step-by-step explanation:

This question would be solved using a simultaneous equation

let

a = number of adults who bought the ticket

b = number of students who bought the ticket

c = number of senior citizens who bought the ticket

a + b + c = 670 eqn 1

10a + 4b + 3c = 5615 -- eqn 2

If 65 senior citizen bought the ticket, substitute for c in equation 1 and 2

a + b + 65 = 670

a + b = 670 - 65

a + b = 605 eqn 3

10a + 4b + 3(65) = 5615

10a +4b = 5420 eqn 4

multiply equation 3 by 10 to derive equation 5. Subtract eqn 4 from eqn 5

10a + 10b = 6050 eqn 5

          -

10a + 4b = 5420 eqn 4

= 6b = 630

b = 105

Students who bought the ticket are 105

Substitute for b in eqn 3

a + 105 = 605

a = 500

Adults who bought the ticket are 500

6 0
3 years ago
Which equation correctly demonstrates the distributive property?
astraxan [27]
B. 30(3a+2b). This is because when distributing, you don't multiply anything unless there is an original multiplication sign. However, that is not the case in choices C and D. In answer choice A, 16 was not distributed to -4k.
4 0
3 years ago
Which explanation uses the number line to show 2 + (-2) = 0?
irakobra [83]

Answer:

2 + (-2) = 0

Step-by-step explanation:

6 0
3 years ago
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