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ICE Princess25 [194]
3 years ago
15

If a=-3 what is 3a² in this calculation

Mathematics
2 answers:
Ket [755]3 years ago
8 0

Answer:

Step-by-step explanation:

3a² = 3*(-3)² = 3* (-3)*(-3) = 27

xenn [34]3 years ago
7 0

Answer:

27

Step-by-step explanation:

substitute -3 as a

so it will be 3 x -3 squared

indices comes first so -3 x -3 is 9 negative multiply by a negative is a positive

and then 3 x 9 = 27

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35 :) If you change the percent into a decimal (0.70) and multiply that by 50, you will get the answer!
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What is the final amount of 777 is decreased by 12% followed by a 4% increase? Give your answer rounded to 2dp.
julia-pushkina [17]

Answer:

711.11

Step-by-step explanation:

<h3>Method 1 </h3>

If 777  is decreased by 12%. the number would now be (100% - 12%) 88% of what it was originally

0.88 x 777 = 683.76

683.76 is increased by 4%.  683.76 would now be (100 + 4%) 104% of what it originally was

683.76 x 1.04 = 711.11

<h3>Method 2 </h3>

12% x 777 =

0.12 x 777 = 93.24

777 - 93.24 = 683.76

4% x 683.76 = 27.3504

683.76 + 27.3504 = 711.11

5 0
3 years ago
A landscaping company placed two orders with a nursery. The first order was for 13 shrubs and 4 trees and totaled 487. The secon
AVprozaik [17]

Answer:

Cost of shrubs = 23

Cost of tree = 47

Step-by-step explanation:

Let

Cost of shrubs = x

Cost of tree = y

13x + 4y = 487 (1)

6x + 2y = 232 (2)

Multiply (2) by 2

12x + 4y = 464 (3)

13x + 4y = 487 (1)

Subtract (3) from (1)

13x - 12x = 487 - 464

x = 23

Substitute x = 23 into (2)

6x + 2y = 232 (2)

6(23) + 2y = 232

138 + 2y = 232

2y = 232 - 138

2y = 94

y = 94/2

= 47

y = 47

5 0
3 years ago
Wesley already has 30 stickers and he will get 27 additional stickers from each pack he buys. How many sticker packs does wesley
motikmotik
He will need to buy 2 more packs of 27
5 0
4 years ago
Simplify. 3x+8−x−6 Enter your answer in the box.
Stolb23 [73]
Answer: 52x

Explanation
6 0
3 years ago
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