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NeX [460]
3 years ago
14

7. Evaluate this expression if x=-2* 3x2 - 4x Need help ASAP Please

Mathematics
1 answer:
patriot [66]3 years ago
5 0

Answer:

20

Step-by-step explanation:

Evaluate 3 x^2 - 4 x where x = -2:

3 x^2 - 4 x = 3×(-2)^2 - -2×4

Hint: | Evaluate (-2)^2.

(-2)^2 = 4:

3×4 - 4 (-2)

Hint: | Multiply 3 and 4 together.

3×4 = 12:

12 - 4 (-2)

Hint: | Multiply -4 and -2 together.

-4 (-2) = 8:

8 + 12

Hint: | Evaluate 12 + 8 using long addition.

| 1 |  

| 1 | 2

+ | | 8

| 2 | 0:

Answer: 20

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6/100 + 5/100 +80/100 +9/100
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♡ The Question ♡

- 6/100 + 5/100 +80/100 +9/100

*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*

♡ The Answer ♡

-  1

*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*

♡ The Explanation/Step-By-Step ♡

- 6/100 + 5/100 + 80/100 + 9/100

Apply the fraction rule! --> a/c + b/c = a + b over c

6/100 + 5/100 + 80/100 + 9/100 = 6 + 5 + 80 + 9 over 100

Add the numbers: 6 + 5 + 80 + 9 = 100!

= 100/100 Apply the fraction rule! a/a = 1

a/a = 1 = 100/100 = 1

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♡ Tips ♡

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4 0
3 years ago
Read 2 more answers
Arianna is packing scented candles and candle holders into gift boxes. She has 84 candles and 48 holders, and each box must cont
pav-90 [236]

Answer:

Step-by-step explanation:

If she has 84 candles and 48 holders, we can write out the factors of both values as shown

For candles

84 = 2×2×3×7

84 = 12×7

For 48

48 = 2×2×2×2×3

48 = (2×2)×(2×2×3)

48 = 4×12

48 = 12×4

From both factors, we can are that 12 common to both of them. This means that the maximum number of gift boxes Ariana can pack is 12

The other factors will give the amount of scented candles and candle holders that each box will have. This means that each box will have 7scented candles and 4 holders.

7 0
3 years ago
A watermelon seed is 4mm long. How far would a line of 114 watermelon seeds stretch? Write your answer in meters.
Stella [2.4K]
Four hundred fifty six
8 0
3 years ago
Samir also picks pumpkins from his garden. He picked 6 7/10 kg, but 2.6 of pumpkins were spoiled and could not be used for decor
QveST [7]

Answer:

6.7kg - 2.6kg = 4.1kg

Step-by-step explanation:

6 7/10 is equal to 6.7. If we have 6.7kg of pumpkins, but we can't use 2.6kg, then we subtract to find the amount that we can use.

7 0
2 years ago
Find the product of 5 1/2 and 1/8
Svetach [21]
To answer, make 5 1/2 an improper fraction and multiply straight across from there.

11/2 * 1/8 = 11/16 and that is in its simplest form.
4 0
4 years ago
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