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Luba_88 [7]
3 years ago
14

Which of the following is the solution of the equation 3x + 4=19 use substitution to identify the correct answer

Mathematics
2 answers:
Ugo [173]3 years ago
5 0

Answer:

5

Step-by-step explanation:

Step 1:

3x + 4 = 19

Step 2:

3x = 19 - 4

Step 3:

3x = 15

Answer:

x = 5

Hope This Helps :)

Anon25 [30]3 years ago
5 0
3 x+4=19
3 x=19-4
3 x=15
3 x/3=15/3
x=5
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A) -5x2 + 2x - 2 = 0
Law Incorporation [45]
I believe you wanted that solved? My math is down below.-

1. You have the equation, which is -5•2+2x-2=0.

2. Multiply -5•2 = -10.

3. Then, you get::-10+2x-2=0.

4. Combine the like-terms:
| -10 - -2 = -8. |

5. Combine this with the original equation.

6. -8 + 2x = 0
- 8 - 8
————————
2x. = 8
———- ——
2 2

x= 4
6 0
3 years ago
The table shows the amount of money that Bradford saved in his savings account after different amounts of time.
DochEvi [55]
Nice of you to offer 50 points

the constant of proportinality is the sloep or
\frac{change(y)}{change(x)}
x is independent variable and y is dependent variable

the independent variable influences the value of the dependent variable

in this case, the number of months influences the amount of money saved

to find the slope, you do
x=number of months
y=amount

we have
4months, $50
8 months, $100
18 months, $225

or
(x,y)
(4,50)
(8,100)
(18,225)

we can compare

the slope between the points (a,b) and (c,d) is
(d-b)/(c-a)
we can take the slope between any 2 points (assuming the slope is the same, which it is)

(4,50) and (8,100)
slope=(100-50)/(8-4)=50/4=25/2=12.5

the slope is 12.5

2nd option is the answer
3 0
3 years ago
Read 2 more answers
Please help meeeeeeeee
Olegator [25]

Answer:

Step-by-step explanation:

4 0
3 years ago
Leah knit a scarf that is 130 centimetres ( cm ) long. Theo knit a scarf that is 4/3 as long Leah's scarf. How long is Theo's sc
harkovskaia [24]

Answer:

173.33333333333...

Step-by-step explanation:

4/3=1.3333333...

So 130×1.3333333... is 173.3333333...

6 0
3 years ago
If a water tank already contains 55 gallons of water when baxter begins to fill it and water is flowing in at a rate of 8 gallon
saw5 [17]

Answer:

I think it would be 55+8x. I hope this helps. :)

Step-by-step explanation:

55 gallons of water

8 gallons per minute

It would be 55 gallons (the original amount in the tank) plus 8 gallons per minute. (8x)

x = how many minutes the tank is being filled up more.

so if you were to fill up the tank another 5 minutes, the equation would be 55+8(5)

55+40

95 would be the answer.

6 0
3 years ago
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