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fredd [130]
4 years ago
13

I need Help on this problem...!!!

Mathematics
1 answer:
den301095 [7]4 years ago
8 0
1) if 5×3=3×5=15 then, -3×5=-5×3=-15
2)-5(3+(-3))=-15+15=0, you multiply -5 fot both 3 and -3 and then you sum up the two products.
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Evaluate the expression below when x=-1. 2x^2-5/x+9
Greeley [361]

Hey there!


2x^2 - 5 / x + 9

= 2(-1)^2 - 5/ -1 + 9
= (2(-1)^2 - 5) / (-1 + 9)

= (2(1) - 5) / 8

= (2 - 5) / 8

= -3 / 8

≈ -0.375


Therefore, your answer is:

-3/8 OR -0.375

EITHER OF THOSE SHOULD WORK BECAUSE THEY ARE EQUIVALENT TO EACH OTHER!

Good luck on your assignment & enjoy your day!


~Amphitrite1040:)

3 0
2 years ago
Use the functions f(x) = 2x2 + 3 and g(x) = 3x + 5 to evaluate the composite function. f(g(3))
Viefleur [7K]

Answer:

Step-by-step explanation:

g(x) = 3x + 5

g(3) = 3(3) + 5

g(3) = 9 + 5

g(3) = 14

-----------------------

f(x) = 2x² + 3

f(g(3)) = 2(g(3)) + 3

f(14) = 2(14²) + 3

f(14) = 2(196) + 3

f(14) = 392 + 3

f(14) = 395

-----------------------------

f(g(3)) = 395

7 0
4 years ago
What is the solution to y = x + 2 and y = 3x – 2 and how do you know? PLEASE HELPPPPP! THANK U!
Nutka1998 [239]

Answer:

(2,4)

Step-by-step explanation:

We have the system:

y=x+2

y=3x-2.

This is already setup for substitution.

I'm going to replace my first y with what the second y equals.

That is, I'm going to write 3x-2=x+2.

Time to solve the following for x:

3x-2=x+2

Subtract x on both sides:

2x-2= 2

Add 2 on both sides:

2x. = 4

Divide both sides by 2:

x. = 2

Now that we know x=2 and we have an equation that relates x to y: either y=x+2 or y=3x-2, doesn't matter which we use, we can find y.

So we y=x+2 with x=2 which means y=2+2=4.

So the solution, the intersection, is (2,4).

5 0
3 years ago
Read 2 more answers
Trong những năm 2005, sản xuất đường ở Mỹ : 11,4 tỷ pao; tiêu dùng 17,8 tỷ pao; giá cả ở Mỹ 22 xu/pao; giá cả thế giới 8,5 xu/pa
ira [324]

xin lỗi nhưng không ai có thể hiểu bạn ở đây vì họ chỉ nói tiếng anh ở đây

5 0
3 years ago
Find the value of G<br><br> -6g+36=12
Levart [38]
-6g + 36 = 12
36 = 12 + 6g
24 = 6g
4 = g

g = 4
4 0
4 years ago
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