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exis [7]
3 years ago
6

Evaluate the algebraic expression 18 + (- 31) =

Mathematics
1 answer:
frosja888 [35]3 years ago
8 0

Answer:

-13

Step-by-step explanation:

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Two birds sit at the top of two different trees. The distance between the first bird and a birdwatcher on the ground is 32 feet.
mestny [16]

Answer:

x = 45.3°

Step-by-step explanation:

The distant between the first bird and the bird watcher is opposite to the reference angle, x° = 32 ft

The hypotenuse is the distance between the second bird and the bird watcher = 45 ft.

Therefore,

sin(x) = \frac{opp}{hyp} = \frac{32}{45}

sin(x) = \frac{32}{45} =  0.7111

x = sin^{-1}(0.7111)

x = 45.3

6 0
3 years ago
What is the root of the polynomial equation x(x-2)(x+3)=18? Use a graphing calculator and a system of equations.
andre [41]

Answer:

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The length of a rectangle is 2 units more than the width. The area of the rectangle is 35 units. What is the width, in units, of
Katena32 [7]
7 units hahahahaha hahahahha hahahahaha
6 0
3 years ago
Read 2 more answers
How do I find the mistake the student did?
Maslowich

Answer:

Step-by-step explanation:

What he did at the end of the given equations is solve for x in x + 8y= 21

x = 21 - 8y                Substitute that result in the top equation.

<u><em>7(21 - 8y) + 5y = 14 </em></u>  is the correct step To continue Remove the brackets

147 - 56y + 5y = 14   Combine

147 - 51y = 14             Add 51y to both sides.

147 = 51y + 14            Subtract 14 from both sides.

133 = 51y                   divide by 51

y = 2.61 rounded.

The incorrect step is <em><u>underlined and italicized.</u></em>

4 0
3 years ago
Please help me quick !!!!!!!!!
Shalnov [3]

I would have to guess a bar graph, because it would calculate and compare the amounts to each person, but that would just be my guess.

Hope this helps, if not, comment below please!!!

4 0
3 years ago
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