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Ber [7]
3 years ago
11

Do this for me please I beg you and I give you a good rating.

Mathematics
1 answer:
Musya8 [376]3 years ago
5 0
1. -2.4
2. 6.7
3. -0.064
4. 32.1 (divide by 4)
5. -14.7
6. -30
7. 3.4
8. 14
9. -410
10. 51000
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PLEASE PLEASE PLEASE HELP I WIL GIVE BRAINLIEST<br> ALSO PLS SHOW WORK
Tasya [4]
3 5/6 I took the test
5 0
3 years ago
Read 2 more answers
A fence is 695
Rasek [7]
Let the two parts with equal length have length x.
The longer part has length x + 20.

The sum of the three lengths is 695 m.

x + x + x + 20 = 695

3x + 20 = 695

3x = 675

x = 225

x + 20 = 245

The two short parts measure 225 m, and the long part measures 245 m.
5 0
3 years ago
Find the vertex of the graph of f(x) = x2 + 4x - 5.
Fofino [41]
You can solve this in two ways.

1. Graphical. Plot the graph for x between -5 and 1 (see attachement).
The vertex of the graph is the peak of the curve, which has the coordinates x=-2, y=-9.

2. Analytical. Calculate the derivative of the function f(x)
\frac{df}{dx}=2x+4
Solve the equation:
2x+4=0
will give the solution x=-2.
Replace x=-2 in the f(x) function and you'll get the value of y:
(-2)^2+4 \cdot (-2)-5=4-8-5=-9

You get the same answer: x=-2, y=-9

So the answer is
<span>B. (-2, -9)</span>

7 0
3 years ago
What is the area of the circle if DF=20 in.
crimeas [40]
We know that

DF is the diameter of the circle
so
radius r=DF/2----->20/2-----> r=10 in

area of the circle=pi*r²------> pi*10²-----> 100*pi in²-----> 314 in²

the answer is

100*pi in² or 314 in²
4 0
3 years ago
Solve the following equation for y: −8x+ 4y = 20
MrRissso [65]

Answer:

y=5+2x

Normally I would explain it, but im in a bit of a hurry today. I apologize for the inconvenience!

8 0
3 years ago
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