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3 years ago

Write the fraction in terms 45/75

1 answer:

4 0

The Answer is 3/5

The gcd of 45 and 75 is 15, so 45/75 = (15×3)/(15×5) = 15/15×3/5 = 3/5:

Answer: 3/5

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Find the number that makes the ratio equivalent to 12:1. ?:6

Naily [24]

Right side was multiplied by 6 so you multiply the left side by 6 so 72:6

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3 years ago

A researcher is interested in estimating the mean weight of a semi trailer truck to determine the potential load capacity. She t

Kaylis [27]

Answer: 95% confidence interval = 20,000 ± 2.12 $\times$ $\frac{1500}{\sqrt{17} }$

( 19228.736 , 20771.263 ) OR ( 19229 , 20771 )

Step-by-step explanation:

Given :

Sample size(n) = 17

Sample mean = 20000

Sample standard deviation = 1,500

5% confidence

∴ $\frac{\alpha}{2}$ = 0.025

Degree of freedom ( $d_{f}$ ) = n-1 = 16

∵ Critical value at ( 0.025 , 16 ) = 2.12

∴ 95% confidence interval = mean ± $Z_{c}$ $\times$ $\frac{\sigma}{\sqrt{n} }$

Critical value at 95% confidence interval = 20,000 ± 2.12 $\times$ $\frac{1500}{\sqrt{17} }$

( 19228.736 , 20771.263 ) OR ( 19229 , 20771 )

3 0

3 years ago

What is the answer to this problem step by step (3+2)^2×7)-13+5^2?

Ainat [17]

Answer:

187

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Step-by-step explanation:

Step 1: Define

(3 + 2)² × 7 - 13 + 5²

Step 2: Evaluate

(Parenthesis) Add: 5² × 7 - 13 + 5²
Exponents: 25 × 7 - 13 + 25
Multiply: 175 - 13 + 25
Subtract: 162 + 25
Add: 187

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3 years ago

Miley drove 288 miles in 4 1/2 hours. What was Miley's average speed in miles per hour?

jok3333 [9.3K]

It is C) 64 mph. Brainliest?

3 0

3 years ago

Read 2 more answers

Can someone please help me with this question?

liq [111]

To get the solution we are looking for we need to point out what we know.
1. We assume that 55 is 100% because its the output value of the task.
2. We assume that the x is the value we are looking for.
3. If 100% = 55 so we can write it down as 100%=55
4. We know that x% = 44 of the output value so we can write it as x%=44.
5. Now we have two simple equations: 1) 100%=55 2) x%=44 where left sides of both of them have the same units and both right sides have the same units so we can do something like that 100%/x%=55/44.
6. Now we just have to solve the simple equation and we will get the answer.
7. Solution for 44 is what percent of 55 100%/x%=55/44 (100/x)*x=(55/44)*x we multiply both sides of the equation by x 100= 1.25*x we divide both sides of the equation by (1.25) to get x 100/1.25=x 80=x now we have: 44 is 80% of 55!

Quick answer = 44 is 80% of 55
Hope this helps! ;D

3 0

3 years ago