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Sliva [168]
3 years ago
10

Natalie and her friends eat at a restaurant. The bill is $78.96. Natalie leaves a

Mathematics
1 answer:
babunello [35]3 years ago
3 0

Answer:

0.1422 %

Step-by-step explanation:

$93.18 - $78.96 = $14.22

Move the decimal in 14.22 two spaces to the right and put a zero after the decimal point.

0.1422 %

I hope this helps u! :D

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A right isosceles triangle has an area of 65cm^2. What's the length of each leg to the nearest tenth of a cm.
Andreas93 [3]

Well, we know that the legs of this triangle are equal, and we know
that the area of any triangle is  (1/2)(base)(height) .

Since this is a right triangle, we can set it down on one leg, and then
the other leg will be the height.  Then ...

    Area = (1/2) (base) (height)

             = (1/2) (leg) (leg)

    65 cm²  =  (1/2) (leg)²

Multiply each side by  2 :  130 cm²  =  (leg)²

Take the square root of each side:      leg = √130 cm²  =  11.402 cm

                                        rounded to the nearest tenth:    11.4 cm

5 0
4 years ago
5x (x+8)= - 7 quadratic or not? explain, ​
mote1985 [20]

Answer:

Step-by-step explanation:

Yes it is a quadratic equation

5x^2 + 40x = -7

5x^2 + 40x + 7 = 0

a = 5

b = 40

c = 7

-40/10 <u>+</u> (sqrt(1600 - 4(5)(7)))/10

-4 <u>+</u> (sqrt(1600-160))/10

-4 <u>+</u> (sqrt(1440))/10

-4 <u>+</u> 12(sqrt(10))/10

-4 <u>+</u> 6/5(sqrt(10))

6 0
4 years ago
What would be the scale factor?
icang [17]
The scale factor would be 3
7 0
3 years ago
What’s the exponent ion regression equation for hat first these data.
Fittoniya [83]

the answer is in the picture

5 0
3 years ago
Find the volume of the cone. Leave your answers in therms of pi.
SOVA2 [1]
Hey there! :)

The formula for finding volume of a cone = (π · r² · h) ÷ 3

r = 3
3² = 3 × 3 = 9

h = 7

7 × 3 × π = 21π

Your answer is C. 21π³

Hope this helps :)
5 0
3 years ago
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