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777dan777 [17]
2 years ago
5

The distance from Elena's chin to the top of her head is 150 mm in an imag

Mathematics
1 answer:
ollegr [7]2 years ago
7 0

The height of the image of the ditance from Elena's chin to her head after it has been scaled 80% 3 times is 76.8 mm

<h3>What is the height of the image after it has been scaled?</h3>

When an image is scaled, it means that its dimensions have been reduced by a certain percentage. In this question, the image is reduced by 80%.

The height of the image after it has been scaled = 150 x 0.8^3 = 76.8 mm

To learn more about scale drawings, please check: brainly.com/question/26388230

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A rectangle has sides measuring (2x + 7) units and (5x + 9) units. Part A: What is the expression that represents the area of th
andrey2020 [161]

Answer:

Part A:  

(2x+7)(5x+9)

=(2x+7)(5x+9)

=(2x)(5x)+(2x)(9)+(7)(5x)+(7)(9)

=10x2+18x+35x+63

=10x2+53x+63

A)

The formula for determining the area of a rectangle is given as

Area = length × width

Given that the length and width are (2x + 6) units and (5x + 3) units, the expression for the area is

(2x + 6)(5x + 3) = 10x² + 6x + 30x + 18

Area = 10x² + 36x + 18

B)

The degree is 2 because the highest power of the terms is 2. It is classified as a trinomial because it has 3 terms.

C) it is closed under multiplication. the exponents in the polynomials are whole numbers(2 and 1). The whole numbers are closed under addition, which means that the new exponents formed are also whole numbers. The exponents were whole numbers before multiplication and doesn't change after multiplication.

Step-by-step explanation:

3 0
3 years ago
The area of a rectangular pool is 6072 m(squared)
lesya [120]

Answer:

88 m

Step-by-step explanation:

A=L×w

Where A=6072 m squared, w=69 m

6072=L×69

L=6072/69

L=88 m

3 0
3 years ago
.35 times .7 pls show work.
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3 0
3 years ago
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The temperature at 4 a.m. was -13 °F. The temperature was rising at a steady rate of 5°F an hour. At what time will the temperat
Dovator [93]
At 9 a.m. the temperature will be 12
7 0
3 years ago
What is the angle, in degrees, if the Area is 180 square miles and the radius is 42,240 feet?
Savatey [412]

Step-by-step explanation:

the area of a circle (all 360°) is

pi×r²

with r being the radius.

the area of a circle segment is just the corresponding fraction of the whole circle.

so the area of a segment of x degrees is

pi×r² × x/360

in our case we know

pi×42240² × x/360 = 180 mi²

we also know that there are 5280 ft in 1 mile.

so, the radius is actually

42240 / 5280 = 8 miles

and therefore our equation resulting in mi² has to use miles and not ft and has to look that way :

pi×8² × x/360 = 180 mi²

pi×64 × x/360 = 180

pi×64 × x = 180×360

pi×x = 180×360/64 = 1012.5

x = 1012.5/pi = 322.2887598...°

so, the angle of the segment of a circle with the area of 180 mi² and the radius of 8 mi is 322.2887598...°

5 0
2 years ago
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