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lara [203]
2 years ago
13

Evaluate the following expression when x=-5 and y=7: *enter numbers only

Mathematics
1 answer:
Annette [7]2 years ago
6 0

Answer

x+y

Step-by-step explanation:

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Which expression gives the solutions -5x+2x^2=-6x?(1pt)
irina [24]
This is the concept of algebra, the solution of the given expression will be given as follows;
-5x+2x²=-6x
adding 5x on both sides we get
5x-5x+2x²=-6x+5x
2x²=-x
divide both sides by 2
(2x²)/2=-x/2
x²=-x/2
divide both sides by x
(x²)/x=-x/(2x)
x=-1/2
the answer is x=-1/2
8 0
3 years ago
T 11 is 12% of what number?
zmey [24]

Answer:

88

Step-by-step explanation:

12.5% is the same as 1/8 of something

11*8=88

5 0
1 year ago
X - (-20) = 5 _________________
tamaranim1 [39]

X - (-20) = 5

When you subtract a negative, change it to addition:

X + 20 = 5

Subtract 20 from both sides:

X = -15

8 0
3 years ago
Read 2 more answers
Find the area of the kite
Elanso [62]

For this case we have that the area of the kite is given by the area of two triangles, the triangles share the same base of 3 + 3 = 6 meters and one has height of 2m and the other height of 4m.

So, the total area is given by:

A = \frac {1} {2} * 6 * 2 + \frac {1} {2} * 6 * 4\\A = \frac {1} {2} 12+ \frac {1} {2} *24\\A = 6 + 12\\A = 18

Thus, the area of the kite is 18m ^ 2

ANswer:

18m ^ 2

3 0
3 years ago
The average of 7 numbers is 60. The average of the first three numbers is 50, while the average of the last three is 70. What mu
Svetradugi [14.3K]

From the last two facts, we get

\dfrac{x_1+x_2+x_3}3=50\implies\dfrac{x_1+x_2+x_3}7=\dfrac{150}7

\dfrac{x_5+x_6+x_7}3=70\implies\dfrac{x_5+x_6+x_7}7=30

Then

\dfrac{x_1+x_2+\cdots+x_6+x_7}7=60\implies\dfrac{x_4}7=60-\dfrac{150}7-30\implies\boxed{x_4=60}

4 0
3 years ago
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