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Sergeu [11.5K]
2 years ago
15

Help ill mark u brainliest

Mathematics
1 answer:
ANTONII [103]2 years ago
7 0

answer:

8x - 16 + 5x + 15 = 90

and

8x - 6 + 18x + 4 = 180

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3x2 − y3 − y3 − z if x = 3, y = −2, and z = −5.
tatyana61 [14]
Ok so from experience on this site
3x2=3x^2
people don't know how to put exponents
3x^2-y^3-y^3-z
simplify first

3x^2-2y^3-z

x=3
y=-2
z=-5
3(3^2)-2(-2)^3-(-5)
3(9)-2(-8)+5
27+16+5
48
8 0
3 years ago
In 2005 there were 1352 students in 2006 there were 1014 students work out the decrease in the number of students
Eduardwww [97]
I’m. It sure but I need points so sorry
6 0
3 years ago
Susan's art class is 8 hours long. How long is her class in minutes?​
PilotLPTM [1.2K]

Answer: 480 minutes

Step-by-step explanation:

8 hours x 60 minutes in a hour = 480

4 0
3 years ago
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You are designing a metal sculpture that will be placed in front of your school. You sketch an initial design
choli [55]

Answer:

8 feet

Step-by-step explanation:

the length still remains the same regardless of the scale

4 0
3 years ago
Find so that the point (-1,2) is on the graph f(x)=ax^2+4. What does A equal?
natali 33 [55]

We have to find the parameter a so that (-1,2) is part of the function f(x) = ax²+4.

To check if a point is part of a function, we can replace the values of x and y = f(x) with the coordinates of the point and then, if the equation stays true, then the point is part of the function.

So for (x,y) = (-1,2) to be part of the function y = f(x), this equation has to stands true:

\begin{gathered} y=f(x) \\ y=ax^2+4 \\ 2=a(-1)^2+4 \\ 2=a+4 \\ a=2-4 \\ a=-2 \end{gathered}

Then, the function would have to be f(x) = -2x² + 4.

We can check with a graph as:

Answer: a = -2

8 0
1 year ago
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