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melisa1 [442]
3 years ago
14

Can someone please help Solve. 2a+3=9

Mathematics
2 answers:
dedylja [7]3 years ago
8 0

Answer:

a = 3

Step-by-step explanation:

9-3=6

6/2=3

Ksju [112]3 years ago
8 0
Answer a=3

Solver by taking away 3 from both sides
2a = 6
Then divide both sides by 2
a=3
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Create a system of equations
Vika [28.1K]

Answer:

Answer: Janet is 16, and David is 11.

Step-by-step explanation:

Let the ages be j and d.

j = d + 5

j + d = 27

Substitute d + 5 for j in the second equation.

d + 5 + d = 27

2d + 5 = 27

2d = 22

d = 11

Substitute 11 for d in the first equation.

j = d + 5

j = 11 + 5

j = 16

Answer: Janet is 16, and David is 11.

6 0
2 years ago
What is 5x/3 = 80/12 solve for x
Over [174]
X=4

explanation:
-reduce the fraction
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8 0
2 years ago
What times what equals -30 but also can be added together and equal -4
Step2247 [10]

Answer:

Step-by-step explanation:

xy=-30

y=-30/x

x+y=-4

x-30/x=-4

x²-30=-4x

x²+4x-30=0

x^2+4x-30=0\\x=\frac{-4\pm\sqrt{16+120} }{2} \\=\frac{-4\pm\sqrt{136} }{2} \\=-2\pm\sqrt{39} \\=-2+\sqrt{39} ,-2-\sqrt{39} \\y=\frac{-4}{-2+\sqrt{39} } ,\frac{4}{2+\sqrt{39} }correction write ~-30 ~in~place~of~-4~in~the~end

5 0
2 years ago
Plz help
inn [45]
We are given with
P(pop quiz) = 60%
P(not do homework) = 85%

And the condition that
P (pop quiz and do homework) > 5%

So,
P (pop quiz) x P (do homework)
P (pop quiz) x ( 1 - P (not do homework) )
60% x ( 1 - 85%)

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5 0
3 years ago
0.25 as a simplified fraction
Umnica [9.8K]
1/4 because 0.25 is the same thing as 25/100. 25/100 simplified is 1/4
8 0
3 years ago
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