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3 years ago

7

Which is bigger two thirds or seven eights

2 answers:

lys-0071 [83]3 years ago

4 0

Let's compare apples to apples by finding a common denominator...

2/3
7/8

3×8 = 24 we'll use that

You multiply 3 by 8 to get 24 in the denominator, so multiply the numerator by the same amount...

2/3 × 8/8 = 16/24

Do the same with the other fraction but multiply by 3...

7/8 × 3/3 = 21/24

Now we can compare...

16/24 is less than 21/24 so 2/3 is less than 7/8.

Maslowich3 years ago

3 0

Seven eigths, because if you divide 7/8 you get 0.875 and that is bigger that dividing 2/3 and getting 0.3333333...

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Please help me with this pre algebra question

Nikolay [14]

Answer: 11

Step-by-step explanation:

The sum of 8 and 3

Sum is the same as addition.

Therefore, the equation is 8+3

Solve 8+3

8+3=11

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3 years ago

The grocery store sells bottles of juice in six-packs, or they can be bought

Maslowich

Answer:

He will need to buy 2 six-packs and then 4 single bottles.

Explanation:

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4 0

3 years ago

Read 2 more answers

In Pennsylvania the average IQ score is 101.5. The variable is normally distributed, and the population standard deviation is 15

blsea [12.9K]

Answer:

We conclude that the Pennsylvania school district have an IQ higher than the average of 101.5

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 101.5

Sample mean, $\bar{x}$ = 106.4

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 15

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 101.5\\H_A: \mu > 101.5$

We use one-tailed z test to perform this hypothesis.

Formula:

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

Putting all the values, we have

$z_{stat} = \displaystyle\frac{106.4 - 101.5}{\frac{15}{\sqrt{30}} } = 1.789$

Now, $z_{critical} \text{ at 0.05 level of significance } = 1.96$

Since,

$z_{stat} > z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis.

Thus, we conclude that the Pennsylvania school district have an IQ higher than the average of 101.5

5 0

3 years ago

What is the absolute value of negative 6

dimaraw [331]

The absolute value of negative 6 is 2

8 0

4 years ago

Read 2 more answers

3 − (2x − 5) < −4(x + 2)

Ede4ka [16]

Answer:

x < -8

Step-by-step explanation:

3 - (2x - 5) < -4(x + 2)

3 - 2x + 5 < -4*x -4*2

-2x + 8 < -4x - 8

-2x + 4x < -8 -8

2x < -16

x < -16/2

x < -8

7 0

3 years ago