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Alexxx [7]
3 years ago
11

Please help me, pic provide d

Mathematics
1 answer:
vfiekz [6]3 years ago
5 0
Fill in the y of the bottom equation with the top equation because it gives you what Y equals. To answer the question it would be easier to input the top equation into the bottom one. Once you then get the equation for X go to the equation on top and fill in the x to get the y. X=0 Y=2
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Can some one help with the following please…???
LenaWriter [7]

Answer:

5. 8

6. 18

Step-by-step explanation:

5.

a(a^2 + a - 1) + 7 =

= a^3 + a^2 - a + 7

For a = -1,

= (-1)^3 + (-1)^2 - (-1) + 7

= -1 + 1 + 1 + 7

= 8

6.

2ab(a + b) - 3ab(a - b) =

= 2a^2b + 2ab^2 - 3a^2b + 3ab^2

= -a^2b + 5ab^2

For a = 1 and b = 2,

= -(1)^2(2) + 5(1)(2)^2

= -1(2) + 5(4)

= - 2 + 20

= 18

5 0
4 years ago
Read 2 more answers
Rewrite the expression using radical notation 27 2/3
UkoKoshka [18]
The expression using radical notation 27 2/3
8 0
3 years ago
A,B and C are the vertices of a triangle A has coordinates (4,6) B has coordinates (2,-2) C has coordinates (-2,-4) D is the mid
polet [3.4K]

Answer:

Segments DE and BC have equal slopes, showing that segments DE and BC are parallel

Step-by-step explanation:

Here we have the coordinates as follows

The coordinates of A is (4, 6)

The coordinates of B is (2, -2)

The coordinates of C is (-2, -4)

Therefore, the coordinates of D the midpoint AB is ((4 + 2)/2, (6 - 2)/2) which gives;

The coordinates of D is (3, 2)

Similarly, the coordinates of E the midpoint AC is ((4 - 2)/2, (6 - 4)/2) which gives;

The coordinates of E is (1, 1)

To prove that segment DE is parallel to segment BC, e show that the slopes of the two segments are equal as follows;

Slope \, of \, a \, segment = \frac{Change \, in \, the\ y \, coordinates}{Change \, in \, the\, x \, coordinates}

Slope \, of \, segment \  DE =\frac{2 - 1}{3-1} = \frac{1}{2}

Slope \, of \, segment \  BC =\frac{-2 - (-4)}{2-(-2)} = \frac{2}{4} =\frac{1}{2}

Therefore, the slopes of segments DE and BC are equal, which shows that segment DE is parallel to BC.

8 0
4 years ago
A 25-foot streetlight casts a showdown 20feet long.If Melanie is standing at the end of the shadow casted by a 60. -foot tall bu
natka813 [3]
Melanie is 48 feet away from the building.
Heres my working

20% of 25=20 so 20% of 60=48.
Hope this helped ☺️
7 0
3 years ago
Ava bought a washing machine online. It cost $892 plus 21% shipping and handling. What was the total cost? Round your answer to
allsm [11]
The total cost was 1079.32$.
892$ x 1.21= 1079.32$
7 0
3 years ago
Read 2 more answers
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