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GREYUIT [131]
4 years ago
7

Simplify the expression -3(-4y+3) -(3y-4)-4y+7 H E L P

Mathematics
1 answer:
7nadin3 [17]4 years ago
8 0

12y-9-(3y-4)-4y+7 =

(9y-5)-4y+7 =

(5y-5)+7=

5y+2


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A flagpole is at the top of a building. 300 feet from the base of the building, the angle of elevation of the top of the pole is
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Answer: We can use tangent here to find the length of the flagpole

First, find the length of the building + the flag pole

tan 32 = x/300

x=300tan32=187.460805573

(length of building + flagpole)

find length of building

tan 30 = x/300

x=173.205080757

subtract

187.460805573-173.205080757=14.255724816

round, length of flagpole = 14 feet

7 0
3 years ago
Suppose you have two similar trapezoids with a scale factor of 2. If the angle measures of trapezoid ABCD are 80∘, 80∘, 100∘, an
deff fn [24]

Answer:

160, 160, 200, 200

Step-by-step explanation:

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7 0
4 years ago
Help for both a and b
kipiarov [429]

Hi!

Remember that an x-intercept is a point in which the line touches the x-axis (the horizontal line). And, the y-intercept is a point in which the line touches the y-axis (the vertical/up and down line)

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For A)

The coordinate of the y-intercept is (0,1)

The coordinate of the x-intercept is (3,0)

For B)

The coordinate of the y-intercept is (0,0)

The coordinate of the x-intercept is (0,0) !

*both the x and y axis meet at the origin. So, a line that goes through the origin (0,0) is intersecting with BOTH the x and y-axis.

Hope I helped! Comment if you have any questions or concerns.

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5 0
3 years ago
Match the formula to the correct figure.
ss7ja [257]
It is asking you to move the right formula with its match.

Formula for a cylinder: π*R^2*H
So the first option goes to the first shape.

Example: 
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Length=10
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=725 cm³ for the answer. 

Formula for a square: l*w*h

So the 4th option goes with the 2nd shape. 

Example: l=5 w=5 h=5
(Length * Width * Hieght) 

5*5*5=125 for the answer.

Formula for a cone is: 1/3π*r^2*h
So the second option goes to the 3rd shape. 

Example: r=3 h=11 
π≈3.14
\frac{1}{3} *3 ^{2} *11=33
33 is your answer. 

Formula for the pyramid would be: 1/3*b*h
So the 3rd option would go to the 4th shape.

Example: 
b=2 h=10
\frac{1}{3} *2*10=6.666667
Rounded: 6.6

Hope this helps!~

(Look at the attachment)

6 0
3 years ago
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Martha wants to put down new carpet in her living room. What type of measurement does she need to find to figure out how much ca
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She needs to find the AREA
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