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3 years ago

Flora has saved $4 less than twice the amount Jason has saved. Together they have $44. How much has each person saved?

Mathematics

1 answer:

shusha [124]3 years ago

4 0

Answer:

$20

Step-by-step explanation:

$44 - $4 = 40

40 divided by 2=$20

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Step-by-step explanation:

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4 years ago

Find the LCM of x2 + x,x2-1,x2-x

olchik [2.2K]

Answer:

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3 years ago

rebecca wants to put 544 pennies in a coin collection book. the blue book fits 9 pennies per page. The red book fits 7 pennies p

ira [324]

Answer: 17 pages

Step-by-step explanation:well you would have to divide 544 by 9 to see hao many pages you would need for the blue book

544/9= 60.44 which would be 61

then you would have to divide 544 by 7 to see hao many pages you would need for the red book

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the you would subtract 78 by 61 to see how many more pages you would need

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3 years ago

9³•9⁴ [?]<br>-------- • 9³ = 9<br> 9²

Colt1911 [192]

9514 1404 393

Answer:

9⁸

Step-by-step explanation:

The applicable rules of exponents are ...

(a^b)(a^c) = a^(b+c)

(a^b)/(a^c) = a^(b-c)

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3 years ago

Read 2 more answers

The paint used to make lines on roads must reflect enough light to be clearly visible at night. Let μ denote the true average re

tatuchka [14]

Answer:

We conclude that average reflectometer reading for a new type of paint is greater than 20

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 20

Sample size, n = 13

Alpha, α = 0.05

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 20\\H_A: \mu > 20$

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} } = 3.2$

Degree of freedom = n - 1 = 13 - 1 = 12

Now, we calculate the p-value with the help of standard table.

P-value = 0.004

Since, the p-value is less than the significance level, we fail to accept the null hypothesis and reject it.

Thus, there is enough evidence to support that average reflectometer reading for a new type of paint is greater than 20

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3 years ago