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3 years ago

13

The original price was $20, the sales price is $15. Is this an increase or decrease? What was the percent change?

1 answer:

UkoKoshka [18]3 years ago

3 0

Answer: Decrease by 30%

Step-by-step explanation:

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Megan used a 30% off coupon to purchase a sweater. If she saved $14.40, what was the original price of the sweater?

ehidna [41]

Answer: 18.72

Step-by-step explanation:

14.40*1.3

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3 years ago

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Need help with this math

Oksi-84 [34.3K]

Answer:
B. 6 + √26
Step-by-step explanation:
1. Make a right triangle using the line that goes from office to supermarket.
2. Use pythagorean thereom to find the distance of the longest side.
3. FInd the distance of the line segment going from supermarket to Marias House.
4. Add them together to get 6 + √26.

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Is the equation y+1=7(x+2) in point-slope form? justify your answer.

djverab [1.8K]

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3 years ago

Given the function f(x)=x2+2x+1, find: e f(a)

Darina [25.2K]

Answer:

f(a) = a^2 + 2a + 1

Step-by-step explanation:

Given the function f(x)= x^2 +2x + 1, find: f(a):

Merely substitute ' a ' for x:

f(a) = a^2 + 2a + 1

If you really want e*f(a), multiply the above by e:

e*f(a) = ea^2 + 2ea + e

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4 years ago

A child looks up in front of himself and sees a hot air balloon in the sky. The angle of elevation from the child to the balloon

blsea [12.9K]

Answer: 95.996 feet ( Approx )

Step-by-step explanation:

Here, the distance of the child from the spot that is directly under the balloon = 75 ft

Let the distance of the balloon from the ground = h ft

Now, According to the question,

We can write,

$\frac{\text{ The distance of the balloon from the ground}}{\text{ The distance of the child from the spot that is under balloon}}=tan52^{\circ}$

$\frac{h}{75}=tan52^{\circ}$

$h = tan52^{\circ}\times 75=95.9956224145\approx 95.996\text{ feet}$

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4 years ago