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aalyn [17]
2 years ago
10

HELP I DONT KNOW THE ANSWER

Mathematics
1 answer:
il63 [147K]2 years ago
6 0

9514 1404 393

Answer:

  3/4; 1/4, 1/4, 1/4

Step-by-step explanation:

The intent here is to let you demonstrate your understanding that multiplication by an integer is the same as repeated addition.

Your knowledge of fractions tells you ...

  \dfrac{1}{4}\times3=\dfrac{3}{4}

The factor of 3 means this is equivalent to adding 1/4 a total of 3 times:

  \dfrac{1}{4}\times3=\dfrac{1}{4}+\dfrac{1}{4}+\dfrac{1}{4}

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The answer is 80 I think
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John Davis makes $9.75 an hour. He works four hours on Monday, six hours on Tuesday, five hours on Wednesday, five hours on Thur
Hatshy [7]
<span>You are given John Davis’ rate which is $9.75 an hour. It is said that he works for four hours on Monday, six hours on Tuesday, five hours on Wednesday, five hours on Thursday, and seven hours on Friday. You are asked to find the gross pay of John Davis. All you need to do is to multiply the rate to the hour of work.</span>
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Monday: $9.75(4h) = $39</span>
Tuesday: $9.75(6h) = $58.5
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8 0
3 years ago
5+2 root 3 / 7+4 root 3 =a-6root3
STALIN [3.7K]

Answer:

<h2>a = 11</h2>

Step-by-step explanation:

\dfrac{5+2\sqrt3}{7+4\sqrt3}\qquad\text{use}\ (a+b)(a-b)=a^2-b^2\\\\=\dfrac{5+2\sqrt3}{7+4\sqrt3}\cdot\dfrac{7-4\sqrt3}{7-4\sqrt3}=\dfrac{(5+2\sqrt3)(7-4\sqrt3)}{7^2-(4\sqrt3)^2}\qquad\text{use FOIL}\\\\=\dfrac{(5)(7)+(5)(-4\sqrt3)+(2\sqrt3)(7)+(2\sqrt3)(-4\sqrt3)}{49-4^2(\sqrt3)^2}\\\\=\dfrac{35-20\sqrt3+14\sqrt3-8(3)}{49-(16)(3)}=\dfrac{(35-24)+(-20\sqrt3+14\sqrt3)}{49-48}\\\\=\dfrac{11-6\sqrt3}{1}=11-6\sqrt3

8 0
3 years ago
Is 8/8 greater than 3/4 ?
BlackZzzverrR [31]

8/8 is bigger than 3/4 because 8/8 is equivalent to 1 and 1 is bigger than 3/4.
3 0
3 years ago
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State whether each situation has independent or paired​ (dependent) samples. a. A researcher wants to compare the hand–eye coord
Alex73 [517]

Answer:

a. A researcher wants to compare the hand–eye coordination of men and women. She finds a random sample of 100 men and 100 ​women, and measures their hand–eye coordination = paired samples

b. A researcher wants to know whether professors with tenure have fewer office hours than professors without tenure. She observes the number of office hours for professors with and without tenure. =  independent samples

Explanation:

Paired-samples t tests compare scores on two different variables but for the same group of cases; independent-samples t tests compare scores on the same variable but for two different groups of cases.

6 0
3 years ago
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