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2 years ago

(-1/2 - 1/8) + (3/4 + 5/6) A.1/12

Mathematics

1 answer:

Yanka [14]2 years ago

7 0

Answer:

23/24

Step-by-step explanation:

Let's convert all the fractions to a common denominator

(-12/24 - 3/24) + (18/24 + 20/24)

Combine like terms and you get 23/24

You might be interested in

Rewrite the expression in exponential form

zheka24 [161]

Answer:

$x^{\frac{1}{4} }$

Step-by-step explanation:

A root can be converted to a power by taking the base of the root (in this case 4) and making it 1 over that number, so in this case $\frac{1}{4}$

If it were the fifth root you would make it to the 1 over 5 power.

6 0

4 years ago

A simple random sample of 144 observations was taken from a large population. The sample mean and the standard deviation were de

Vera_Pavlovna [14]

Answer:

The standard error of mean = 10

Step-by-step explanation:

Given a simple sample of 144 observations was taken from a large population.

The size of large sample 'n' = 144

Given sample mean and the standard deviation were determined to be 1234 and 120 respectively.

Given standard deviation of sample (S) = 120

The standard error of mean is determined by

$SE (X^{-} ) = \frac{S.D}{\sqrt{n} }$

$SE (X^{-} ) = \frac{120}{\sqrt{144} } = 10$

<u>Final answer</u>:-

The standard error of mean = 10

4 0

3 years ago

Anyonr know the answer pretty easy just alittle confused

mixas84 [53]

Answer : D

Cross multiply:
9n + 63 = 8n + 40

Subtract 63 from both sides:
9n + 63-63= 8n + 40-63

Simplify:
9n=8n-23

Subtract 8n from both sides:
9n-8n= 8n-23-8n

Simplify:
n=-23

6 0

2 years ago

B. 2(3x - 5) = 2x + 6

Leto [7]

Answer:

x = 4

Step-by-step explanation:

Given

2(3x - 5) = 2x + 6 ( divide both sides by 2 )

3x - 5 = x + 3 ( subtract x from both sides )

2x - 5 = 3 ( add 5 to both sides )

2x = 8 ( divide both sides by 2 )

x = 4

8 0

3 years ago

Read 2 more answers

If BC=6x+4 AC=52 and AB=4x+8 find BC

Andrej [43]

x=4, BC=28, AB=24, AC=53

7 0

4 years ago