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Sphinxa [80]
3 years ago
13

Needd help with question 18​

Mathematics
1 answer:
Mariana [72]3 years ago
3 0

Answer: 7

Step-by-step explanation:

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A 30 foot tree broke from its base and fell against a house. If the tree touches at 21 feet what angle is the tree forming with
Ray Of Light [21]
The angle will be acute since 21 is less than 90 degrees 
3 0
4 years ago
Which statement is true concerning the vertex and axis of symmetry of h(x)=−2x2+8x?
frozen [14]

Answer:

the vertex is at (2, 8) and the axis of symmetry is x = 2

Step-by-step explanation:

In h(x)=−2x2+8x please use the symbol " ^ " to indicate exponentiation:

h(x)=−2x^2+8x      

This is a quadratic equation with coefficients a = -2, b = 8 and c = 0.

The axis of symmetry equation is x = -b/ (2a).

                                                                                                -8

Here, with a = -2 and b = 8, the axis of symmetry is   x = --------- = 2

                                                                                               2(-2)

To find the y-coordinate of the vertex, substitute 2 for x in h(x)=−2x^2+8x, obtaining

h(2) = -2(2)^2 + 8(2) = -2(4) + 16 = 8

In summary, the vertex is at (2, 8) and the axis of symmetry is x = 2.

5 0
3 years ago
Read 2 more answers
If -a=b and a+c=d then b+c=d
Effectus [21]
This is incorrect

-a = b
a + c = d
b + c = d is incorrect because it says a + c and not -a + c.

If you multiply the first line with -1 then you would get a = -b
So the final line would actually be -b+c=d
3 0
3 years ago
A person is playing a video game where the number of aliens that appear on a level triples each time from the previous level. Le
exis [7]

Answer:

45

A=5(3L) <-not fully sure if correct

A=aliens

L=levels

Step-by-step explanation:

3 0
2 years ago
Erica was deducted 450 points while she was playing a
Over [174]

Answer:

15

Step-by-step explanation:

hope this helps

6 0
3 years ago
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