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klio [65]
3 years ago
6

Evaluate. 3x^2 + 5x+1, when x = -2

Mathematics
1 answer:
forsale [732]3 years ago
6 0

Answer:

3

Step-by-step explanation:

Since we know x = -2 we can plug it into the equation

3*-2^2+5*-2+1

Solve!

3*-2^2+5*-2+1 = 3

Hope this helps!

You might be interested in
Are the expressions x + x + 1 + x + 2 + x + 1 + x and 5x + 4 equivalent? Why or why not?
egoroff_w [7]

Answer:

yes

they are equivalent because lets say the X = 3 then you would have to answer

3 + 3 + 1 + 3 + 2 + 3 + 1 + 3

and that would = 19

and then on the other equation

5 x 3 + 4 = 19

So the both equal the same.

PLZ MARK ME BRAINLIEST

3 0
3 years ago
1. 4x + 5y
kvv77 [185]
<h3><u>Solution</u><u> </u><u>:</u><u>-</u><u> </u></h3>

  • When x = 6 and y = 1.

1) 4x + 5y

→ 4*6 + 5*1

→ 24 +5 = 29

2) 2x (20-y)

→ 2*6 (20-1)

→ 12 *19 = 228

3) x ÷ 3 + y

→ 6 ÷ 3 + 1

→ 2 +1 = 3

4) 4y ÷ 2 + (8x + 10)

→ 4*1 ÷ 2 +(8*6+10)

→ 2 + (48+10)

→ 2 + 58

→ 60

5 ) 5. Patty made $34 baby sitting on each of 3 weekends. If she spent $50 on gifts for her family, how much money does she have left?

Money made each weekend = $34

Money made in 3 weekend = $34*3 =$102

Money spent = $50

Therefore ,

→Money left = Money made in 3 weekends - Money spent

→ Money left = $102 - $50 = $52

6.Carlos solved 20-(2x6) + 8 divide 4 = 29. Is this the correct answer? ( In attachment it's written 29 and not 28 .)

Given equation is ,

→ 20 - (2 × 6) + 8 ÷ 4 = 29

Solve inside the brackets ,

→ 20 - 12 + 8 ÷ 4

Perform division ,

→ 20 -12 + 2

Perform addition ,

→ 22 - 12

Perform subtraction,

→ 10

<u>No , he is wrong the answer should have been 10 but he got 29 .</u>

<em>I </em><em>hope</em><em> this</em><em> helps</em><em> </em><em>.</em>

8 0
2 years ago
If g(x) = -5x + 13, find g(-1)
givi [52]

To solve this problem, we must substitute the value of -1 in for x in the function. This means that for every x there is in the equation, we must substitute the value -1 in for it in order to find the value of g(-1). This is modeled below:

g(x) = -5x + 13

g(-1) = -5(-1) + 13

Next, we must simplify using the order of operations. PEMDAS outlines this concept, telling us to simplify parentheses first, exponents next, then multiplication and division, and finally addition and subtraction. In this case, we will solve the multiplication and then the addition, as modeled below:

g(-1) = -5(-1) + 13

g(-1) = 5 + 13

g(-1) = 18

Therefore, your answer is 18.

Hope this helps!

5 0
3 years ago
I WILLL MARK BRAINLEST IF YOU MAKE ME LAUGH BEST JOKES AND IT HAS TO BE LEGIT IF NOT I REPORT YOU !!! ! HOUR TO MAKE ME LAUGH EA
Soloha48 [4]

why did the chicken cross the road

yes

5 0
4 years ago
Read 2 more answers
What’s the answer to this question?
sertanlavr [38]

Answer:

2 equations

28.8/100*75 = $21.6 - 10% 21.6/100*90 = $19.44

Step-by-step explanation:

First one we determine the 25% ans second we deduct 10% from that result.

4 0
4 years ago
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