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3 years ago

Help me on the first question pls

Mathematics

1 answer:

Margaret [11]3 years ago

3 0

To do the first question, simplify the equation, putting like terms together, by adding and subtracting to do this.

Then looking at the equation that you solved for, look and see if there are any other equations that are related in some way to the original solved equation.

Pay close attention to the positive and negative signs.

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Leon simplified √180k/9k^5 His work is shown below. Leon got a simplified answer of 2/k^2√5 Did he simplify correctly?

Deffense [45]

Answer:

No, 2/3 sqrt(5) k^(11/2)

Step-by-step explanation:

6 0

2 years ago

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For every 140 feet that Kelly rides on her bicycle, the wheels turn 20 times. About how many times do the wheels turn in 5 miles

Mars2501 [29]

Answer: The wheels turn about 3771 times in 5 miles.

Step-by-step explanation:

Given, Kelly rides on her bicycle such that the number of times wheels turn for every 140 feet = 20

Turns for every feet = $\dfrac{20}{140}=\dfrac{1}{7}$ ...(i)

To find : Number of times wheels turn in 5 miles.

Since , 1 mile = 5,280 feet

Then, 5 miles = 5 x (5,280 feet) = 26,400 feet

Now , Number of times the wheels turn in 26,400 feet = 26400 x (Turns for every feet)

$26400\times\dfrac{1}{7}=3771.42857143\approx3771$ [From (i)

Hence, the wheels turn about 3771 times in 5 miles.

5 0

3 years ago

15. The floor plan of the basement of a shopping centre is drawn to a scale of 1:400.

maks197457 [2]

Answer:

4 hectares

Step-by-step explanation:

The scale factor is:

k = 1/400

Applied to the area we consider k² as the area is the product of two dimensions.

Find the actual area:

0.25 m² : (1/400)² =
0.25 m² * 160000 =
40000 m² =
40000 * 1/10000 hectares =
4 hectares

6 0

3 years ago

A sweater is on sale for 20% off the regular price. The sale price is $60. What is the regular price of the sweater?

qaws [65]

The answer is B

If the sweater is on sale for 20%, then the sale price will be 80% of the regular price.

Therefore, $60 = 80% of regular price

$60/80 = $0.75 which gives you 1% of the regular price
So $0.75 is 1% of regular price.

$0.75 * 100 = $75 which gives you the regular price as 1% multiplied 100 times = full price

Soooo, full price is b.) $75

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3 years ago

Name an angle vertical to TPQ. A. TPU B. QPU C. UPR D. none of these

tatyana61 [14]

Answer:

C. UPR

Step-by-step explanation:

Opposite from TPQ

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3 years ago

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