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3 years ago

PLZZZ ANSWER :(-!!!!!! | | | v

Mathematics

2 answers:

elixir [45]3 years ago

8 0

Answer: 1400

Step-by-step explanation: you add 40 and 30 then you times it by 20 because it said " what is the area of the part that's painted blue" it's trying to throw you off by having the other numbers by the window and the door.

Svetllana [295]3 years ago

8 0

Answer:

679 square feet

Step-by-step explanation:

First, I divided the shape into TWO parts, the triangle and the square. I did the triangle first. What I do is Make a quadrilateral from the triangle and solve the are for that then divide by two. So,

10*20=200

200/2=100

The first part is 100.

Then I did all the white areas.

The door is 5*3 so,

5*3=15

The area is 15.

Then the window.

2*3=6

The area is 6.

Now for the big blue square.

30*20=600

The area of that is 600.

No, you need to add the triangle to the square.

100+600=700

And now to subtract the windows and doors (you cant paint those)

15+6=21

700-21= 679

The area the must be paitned is 679 square feet.

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One electrician charges his customers a $60 service fee plus $35 per hour.

gavmur [86]

Answer:

2 hours; $130

Step-by-step explanation:

We can do this by setting up an equality since we are finding when they are the same. Say x is the number of horus:

65 * x = 60 + 35* x

30 * x = 60

x = 2 hours

The cost will be the same at two hours, and plugging it in, we can get 65*2=130.

5 0

1 year ago

Evaluate the expression. Identify the property used in each step.

borishaifa [10]

Answer:

3/4 1/2 =3/5

Step-by-step explanation:

6 0

3 years ago

Find the square. (1/4A + 1/4B)^2 a) 1/16A^2 + 1/8AB + 1/16B^2 b) 1/4A^2 + 1/8AB + 1/4B^2

alisha [4.7K]

$(a + b)^2 = a^2 + 2ab + b^2$

$(\dfrac{1}{4}A + \dfrac{1}{4}B)^2 =$

$= \dfrac{1}{16}A^2 + \dfrac{1}{8}AB + \dfrac{1}{16}B^2$

Answer: A.

Another way to solve by factoring 1/4.

$(\dfrac{1}{4}A + \dfrac{1}{4}B)^2 =$

$= [\dfrac{1}{4}(A + B)]^2$

$= (\dfrac{1}{4})^2(A + B)^2$

$= \dfrac{1}{16}(A^2 + 2AB + B^2)$

$= \dfrac{1}{16}A^2 + \dfrac{1}{16}2AB + \dfrac{1}{16}B)^2$

$= \dfrac{1}{16}A^2 + \dfrac{1}{8}AB + \dfrac{1}{16}B)^2$

6 0

3 years ago

Read 2 more answers

Two angles are supplementary the first angle measures 40 degrees what is the second angle

nydimaria [60]

The second angle would be 140⁰. When two angles are supplementary, they add up to 180⁰.
180⁰-40⁰=140⁰

4 0

3 years ago

Sam the Hummingbird flies at a rate of 2 yards per minute, as modeled by the equation y = 2x. She

daser333 [38]

Answer:

See attachment for plot

Step-by-step explanation:

Given

$y =2x$

$R =+2$ --- increment in the rate

First, we need to model the new rate

A linear equation is:

$y = mx + b$

Where

$m = rate$

Compare $y =2x$ and $y = mx + b$ . we have:

$m =2$

The above represents the previous rate.

The new rate:

$R =+2$

Rewrite as:

$R = m+2$

$R = 2+2$

$R = 4$

So, the model is:

$y = Rx$

$y = 4x$

The plot at 1 and 2 minutes

When $x = 1$

$y = 4x = 4 * 1 = 4$

When $x = 2$

$y = 4x = 4 * 2 = 8$

So, we have:

$(x_1,y_1) =(1,4)$

$(x_2,y_2) =(2,8)$

Whether she moves backwards or forward, the distance covered remains the same

See attachment for plot

5 0

2 years ago