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Oksanka [162]
3 years ago
8

What values of x make the equation x2 + 9x – 22 = 0 true? Check all that apply.

Mathematics
2 answers:
Finger [1]3 years ago
5 0

Answer:

A and D/ 1 and 4

Step-by-step explanation:

Inga [223]3 years ago
3 0
-11 and 2 make the equation true. 
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Deangelo has $7 worth of dimes and quarters in a jar. He has 7 more quarters than dimes.
svlad2 [7]
D=number of dimes
q=number of quarters

let's count everything in cents
dimes are worth 10 cents
quarters are worth 25 cents

10d+25q=700
divide both sides by 5
2d+5q=140


he has 7 more quarters than dimes
q=7+d
subsitute 7+d for q in other equation

2d+5q=140
2d+5(7+d)=140
2d+35+5d=140
7d+35=140
minus 35 both sides
7d=105
divide both sides by 7
d=15

sub back

q=7+d
q=7+15
q=22


22 quarters and 15 dimes
3 0
3 years ago
Read 2 more answers
20x^2/12x+8 simplified
shepuryov [24]
  1. 20/12 4
  2. 52/3
  3. 52+/3.+8

<h2 />

8 0
3 years ago
Help me please!!!! I will mark Brainliest
ryzh [129]

Answer:

32 pi

Step-by-step explanation:

im sorry if im wrong im not the smartest haha

8 0
3 years ago
Which expressions are equivalent to ? Check all that apply.
GrogVix [38]

Answer:

6.2+8.7+8.9x

Step-by-step explanation:

For expressions to be equivalent, they must simplify to the same lowest form. 8.9x+6.2+8.7 simplifies to 8.9x +14.9.

Each of the expressions below must simplify to 8.9x + 14.9 to be equivalent.

9x+6+9  = 9x + 15 NO

3.9+6.2+8.7x  = 8.7x + 10.1 NO

3.7+8.9+6.2  = 18.8 NO

6.2+8.7+8.9  = 23.8 NO

6.2+8.7+8.9x  = 8.9x + 14.9 YES

3.9+6.2x+8.7  = 6.2x + 12.6 NO

3.9x+8.7+6.2 = 3.9x + 14.9 NO

8 0
3 years ago
Read 2 more answers
What is the product of 2 2/3 and 2/5
nevsk [136]
Most likely 1.06 but it could be 1.06666667. good luck
7 0
3 years ago
Read 2 more answers
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