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quester [9]
2 years ago
15

!!!! Help! I don’t know this I’m so bad at math please help !!!

Mathematics
2 answers:
Sedaia [141]2 years ago
8 0

Answer:

if X = -2 then

required answer is 41

LenaWriter [7]2 years ago
4 0

Answer:

41

Step-by-step explanation:

9x^2-4x-3 = ? when x=-2

9(-2)^2-4(-2)-3 = ?

9(4)-4(-2)-3 = ?

36+8-3=?

44-3=?

41=?

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Represent the following expressions as the power of a number a.<br> 1/a^2 · 1/a^3
wolverine [178]

Answer:

a⁻⁵

Step-by-step explanation:

1/a²·1/a³

Multiply numerators and denominators

= (1 × 1)/(a² × a³)

= 1/a⁵

= a⁻⁵

4 0
3 years ago
I-Ready
MakcuM [25]

Answer: y= 100x +1500

Step-by-step explanation:

The 1500 value never changes, so it doesn’t need a variable

The 100 value will change based on how many he sells, so it needs a variable

5 0
2 years ago
Read 2 more answers
(x + 7)^2 – 11 = 0<br> lesser =<br> greater r =
Alla [95]

Answer:

Lesser r = - 7 - √11  or -10.32 to nearest hundredth.

greater r = - 7 + √11  or -3.68 to nearest hundredth.

Step-by-step explanation:

(x + 7)^2 – 11 = 0

(x + 7)^2 = 11

x + 7 = ±√11.

6 0
2 years ago
Ana has one coin of 5 cents, one coin of 10 cents, one coin of 20 cents and one coin of 50 cents. how many different values can
vovangra [49]
Ana has 4 coins with different values(5, 10, 20, 50) and you are asked to find how many different sums they can make.  You can see every value as a separate combination and multiply it.
There is 1 coin for every value and it can be either used or not used, so there are two probabilities for each coin value. The calculation would be:
C(2,1)= 2!/1!= 2

There are 4 values of coins, so the total probability would be:
4 * C(2,1)= 4*2=8 ways
4 0
3 years ago
A room is 4 m wide and 1.5 times as long as it is wide. Its height is 1/2 the length. Find the mass of the air in the room if 1m
docker41 [41]
Width = 4m
Length = 1.5(4m)
Height = (1.5(4m))/2
1m^3 = 1 + 3/10 kg
• Looking for mass of the air in the room

7 0
3 years ago
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