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natali 33 [55]
3 years ago
15

Evaluate 3x^2+5, when x= -5 and y= -9

Mathematics
1 answer:
dangina [55]3 years ago
3 0

Step-by-step explanation:

3x {}^{2}  + 5

(3 \times  - 5) {}^{2}  + 5

- 15 {}^{2}  + 5

225 + 5

230

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goldfiish [28.3K]
Answer is -8
why ? Because there’s only a number that’s negative so if one number is negative then the answer is gonna be negative
6 0
3 years ago
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Not sure what the GCF of 42 and 40
ki77a [65]

Answer:

The Greatest common factor (GCF) of 40 and 42 is 2.

(Hope this helps! Btw, I answered first. Brainliest please!! :D)

4 0
3 years ago
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Find the indicated limit, if it exists. limit of f of x as x approaches 0 where f of x equals 7 minus x squared when x is less t
hram777 [196]

Answer:

answer is 7

Step-by-step explanation:

We are given a piecewise function which has a split at x=0

f(x) = f(x) = 7-x^2, x0

To find the limit, we have to find here left hand limit and right hand limit separately.

Here left hand limit for x tending to 0 is

limit of 7-x^2 as x tends to 0

= 7-0 = 7

Right limit = limit of 10x+7 as x tends to 0

=10(0)+7 = 7

Since right hand limit = left hand limit we have

there exists a limit for x=0 and the limit is 7

8 0
3 years ago
Draw the line of reflection that reflects △ABC onto triangle Δ A'B'C'
natka813 [3]

The line for the graph x=1 is the line of reflection that reflects triangle ABC onto triangle A'B'C'.

You have to find the middle points between each pair of identical points and then join them.

3 0
3 years ago
How do I do this? <br> Tell me how you got the answer
kotykmax [81]
1: supplementary means 180 degrees so subtract 30 from 180 and angle b is 150 degrees.
2: complementary means 90 degrees so subtract 49 from 90 and the second angle is 41 degrees.
3: a right angle is 90 degrees.
4: congruent means same size same shape so if the first angle is 40 degrees then the second angle would also be 40 degrees.
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3 years ago
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