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Ganezh [65]
4 years ago
9

Is 4(1.5+s)=6+4s always sometimes or never true​

Mathematics
1 answer:
HACTEHA [7]4 years ago
3 0

Answer:

always

Step-by-step explanation:

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A man used 10 gallons of gasoline on a 180-mile trip. How many
Stolb23 [73]

Answer:

Step-by-step explanation:

gs used in 180 mile=10 gallons

gas used in 1 mile=10/180=1/18

gas used in 450 mile=1/18×450=25 gallons

4 0
4 years ago
Read 2 more answers
The standard deviation of a population is known to be 7.8. If the sample size I'd 85, what is the standard error of the mean
12345 [234]

Answer:

The standard error of the mean is 0.85.

Step-by-step explanation:

The given standard deviation of a population (σ) = 7.8

sample size (N) = 85

We have to find standard error of the mean.

The formula to find standard error of the mean

= (standard deviation of the distribution) / (square root of sample size)

= (σ) / (√N)

= 7.8 / (√85)

= 7.8 / 9.219544457

= 0.8460

= 0.85 (approximately taken to two decimal places)

We have got the required answer.

The standard error of the mean is 0.85.



3 0
3 years ago
How are the step by step math problem suppose to be for this math problem (-2-8)^2?
Sidana [21]

Answer:

the answer is 100

Step-by-step explanation:

(-2-8)^2

(-2-8)(-2-8)

-2(-2-8)-8(-2-8)

4+16+16+64

20+80

100

6 0
3 years ago
Which expressions simplify to 0? Check all that apply. 8g – 8g, (–2g) – 2g, 5g + (–5g), One-half g + one-half, g Negative two-th
victus00 [196]

We have been given 4 expressions. We are asked to choose the expressions, which simplifies to 0.

Let us check our given choices one by one.

1. 8g-8g

8(g-g)

8(0)=0

When we will subtract 8g from 8g, we will get 0. Therefore, expression 8g-8g simplifies to 0.

2. (-2g)-2g

Let us remove parenthesis.

-2g-2g

Upon combining like terms, we will get:

-4g

Since  (-2g)-2g simplifies to -4g, therefore, expression -2g-2g is not a correct choice.

3. 5g+(-5g)

Let us remove parenthesis.

5g-5g

Upon combining terms, we will get:

5g-5g=0

Since  5g+(-5g) simplifies to 0, therefore, expression  5g+(-5g) is a correct choice.

4. \frac{1}{2}g+\frac{1}{2}g-\frac{2}{3}g+\frac{2}{3}g

Let us combine the terms as:

\frac{1+1}{2}g-\frac{2}{3}g+\frac{2}{3}g

\frac{2}{2}g-\frac{2}{3}g+\frac{2}{3}g

g-g(-\frac{2}{3}+\frac{2}{3})

g-g(0)

g-(0)=g

Since \frac{1}{2}g+\frac{1}{2}g-\frac{2}{3}g+\frac{2}{3}g simplifies to g, therefore, expression \frac{1}{2}g+\frac{1}{2}g-\frac{2}{3}g+\frac{2}{3}g is not a correct choice.

6 0
4 years ago
Read 2 more answers
- The circumference of a circle is 8 feet. What is the diameter of the circle?
Mariana [72]

Answer:

Step-by-step explanation:

4 0
3 years ago
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