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eduard
3 years ago
12

Surface area of this figure

Mathematics
2 answers:
Aleks [24]3 years ago
8 0

Answer:

523.1m²

Step-by-step explanation:

Triangle: 1/2bh=1/2(4)(10)=20x2=40 each

Bottom Rectangle: 15x8=120

Side Rectangles: Since the side is a hypotenuse of a right triangle, it’s the square root of 10²+4²=√116=10.77.  10.77x15=161.55

So the total surface area would be 40+40+120+161.55+161.55=523.1m²

tamaranim1 [39]3 years ago
4 0

Answer:

23

Step-by-step explanation:

you add 10m(h) plus 8m(w) plus 15m(l)

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Angles 1 and 2 are complementary, and angle 1=3x+3 and angle 2=10x-4, find the degree measure of each angle
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Answer:

The measure of the angles:

24°  and   66°

Step-by-step explanation:

Complementary angles sum 90°

then:

(3x + 3) + (10x-4) = 90

3x + 10x + 3 - 4 = 90

13x - 1 = 90

13x = 90+1

13x = 91

x = 91/13

x = 7°

then:

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3x+3 = 3*7 + 3 = 21+3 = 24°

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10x - 4 = 10*7  - 4 = 70 - 4 = 66°

Check:

66° + 24° = 90°

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3 years ago
27 in exponetial notation ​
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3^3

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2 years ago
A line has slope 2/3 and y intercept -2. Which answer is the equation of the line?
Bingel [31]

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y=2/3x-2

Step-by-step explanation:

All of the given options are in slope intercept form.

Slope intercept form is y=mx+b

This is where m is the slope fo the line and b is the y intercept

That said, we can simply plug the given values into the form.

y=(2/3)x+(-2)

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On a coordinate plane, solid circles appear at the following points: (negative 3, 2), (negative 3, 3), (1, 4), (1, negative 4),
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A phone store employee earns a salary of $450 per week plus 10% comission on her weekly sales. A) What function rule models the
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Answer:

A) E(w)=450+0.10w

B) $1200

Step-by-step explanation:

Let w represent employee's weekly sales and E(w) be total weekly earnings.

We have been given that a phone store employee earns a salary of $450 per week plus 10% commission on her weekly sales.

A) The total weekly earnings of employee would be weekly salary plus 10% of weekly sales.

10% of weekly sales, w, would be \frac{10}{100}*w=0.10w

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B) To find the weekly sales in the week, when employee earned $570, we will substitute E(w)=570 in our formula and solve for w as:

570=450+0.10w

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\frac{0.10w}{0.10}=\frac{120}{0.10}

x=1200

Therefore, the amount of employee's weekly sales was $1200.

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