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ohaa [14]
3 years ago
7

HELP PLS PLS PLS PLS PLS

Mathematics
1 answer:
EleoNora [17]3 years ago
8 0
Area of trapezoid =
Base 1 + base 2/2 times height
= 1.5 + 3/2 times 2
= 4.5ft squares
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The strategy I don't, but the answer is 7,141
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This semicircle has a diameter of 5 meters.
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(3.14*2.5^2)/2=

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X + 7y = 21<br> x + 4y = 15<br> Solve the simultaneous equations
Mariulka [41]

<u>Answer</u>:

x = 7, y = 2

<u>Explanation</u>:

equations given:

x + 7y = 21

x + 4y = 15

make "x" the subject:

x + 7y = 21

x = 21 - 7y .........equation 1

x + 4y = 15

x = 15 - 4y .......equation 2

Solving both the equations simultaneously:

15 - 4y = 21 - 7y

-4y + 7y = 21 - 15

3y = 6

y = 6 ÷ 3

y = 2

If y is 2

Then x = 21 -7y;

x = 21 - 7(2)

x = 21 - 14

x = 7

8 0
3 years ago
Read 2 more answers
What is the measure of angle D? *<br><br><br> ABC and DEF are similar figures
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Is there a picture to go along with this?
7 0
3 years ago
Graph the function f(x) = (x + 1)(x – 5). Use the drop-down menus to complete the steps needed to graph the function
Effectus [21]

Answer:

0 = (x+1)(x-5)

x= -1 , x= 5

f(x) = x^2 -4x -5

V_x = -\frac{b}{2a}

With a = 1, b=-4 , c=-5

V_x = -\frac{-4}{2*1}= 2

f(2) = 2^2 -4*2 -5 = -9

f(0) = 0^2 -4*0 -5=-5

So then the x intercept would be (0,-5). And finally we can graph the function as we can see in the figure attached.

Step-by-step explanation:

For this case we know the following function:

f(x) = (x+1)(x-5)

We can begin the zeros or the values where the function is 0 like this:

0 = (x+1)(x-5)

And solving for x we got:

x= -1 , x= 5

Now we can rewrite the expression like this:

f(x) = x^2 -4x -5

And we can find the position for the vertex at x with this formula:

V_x = -\frac{b}{2a}

With a = 1, b=-4 , c=-5

And replacing we got:

V_x = -\frac{-4}{2*1}= 2

And then with the coordinate of x for the vertex we can find the coordinate of y replacing the value of x obtained for the vertex.

f(2) = 2^2 -4*2 -5 = -9

Then we can find the intercept using the value of x=0 and replacing into the function we got:

f(0) = 0^2 -4*0 -5=-5

So then the x intercept would be (0,-5). And finally we can graph the function as we can see in the figure attached.

8 0
3 years ago
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