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Anika [276]
3 years ago
12

Evaluate the following expression. Enter your answer in simplest form.

Mathematics
1 answer:
bogdanovich [222]3 years ago
7 0

Answer:

6.25

Step-by-step explanation:

for starters 4/2 is the same as 2 because 4/2=2 so just right it as 2

so 1/2+2^2

this is a proper way to write it

so 1/2 is 0.5 so then 0.5 plus 2 is 2.5

then you square it, when there is a 2 above it that means suare it, and in that case you multiply it by itself

so 2.5*2.5 is 6.25

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2. What is the x-value to the solution for the system of equations y = -5x - 9 and y = 2x<br> + 5.
pav-90 [236]

Answer:

The x-value is -2

Step-by-step explanation:

U can substitute any of the equations for y

-5x + (-9) = 2x + 5

-9 = 7x + 5

-14 = 7x

-2 = x

x = 2

7 0
3 years ago
Please help me out with these no one is helping me.<br>Please anyone <br>​
Olin [163]

Answer:

Below.

Step-by-step explanation:

You find the values of y by substituting the values of x in the expression x^2 + 3x - 1.

So f(-4) = (-4)^2 + 3(-4) - 1 = 16-12-1 = 3

in the same way  f(-3) = -1, f(-2) = -3, f(-1) = -3,

f(0) = -1 and f(1) = 3.

Now plot the points (-4, 3) , (-3, -1) and so on  

Then you can read the values off this graph.

8 0
3 years ago
Read 2 more answers
What is (12-2i) (5+3i) multiplied?
Ilya [14]
= 12*5 + 12*3i - 5*2i - 6i^2    (remember that i^2 = -1) so:-

= 60 +26i - 6*(-1)

= 60 + 26i + 6

= 66 + 26i
5 0
3 years ago
If Sophia purchases n songs for .99 cents each, write an expression for the total cost.
kodGreya [7K]

Answer:

I think the answer would be n×0.99

Step-by-step explanation:

the answer will be n×0.99 because she bought for example n=7 each for 99 cents. to find the total you would have to do 7x0.99. Hope this help you

3 0
3 years ago
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Hey there,so I wanted to help some people out and give this question 48 points. This is kinda easy,but i need a bit of help. Wha
madreJ [45]

Answer:

<em>All real solutions.</em>

Step-by-step explanation:

5(- 3x - 2) - (x - 3) = -4(4x + 5) + 13

-15x-10-x+3=-16x-20+13

-16x-7=-16x-7

All real solutions.

hope this halps... :D lol

4 0
4 years ago
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