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sineoko [7]
3 years ago
11

Evaluate 3x – 4 when x=7. The value of the expression is​

Mathematics
2 answers:
amid [387]3 years ago
6 0

Answer:

Let's solve your equation step-by-step.

3x+2=14

Step 1: Subtract 2 from both sides.

3x+2−2=14−2

3x=12

Step 2: Divide both sides by 3.

3x /3 = 12/3

<u>x=4</u>

Novay_Z [31]3 years ago
4 0

Answer:

17

Step-by-step explanation:

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natima [27]
Since the die is 6 sided, there’s a 1/6 chance he’ll roll a 2. If we divided 100 by 6, it is a 17% success rate.
24 x 17% is 4.08.

He will probably roll successfully 4 times out of 24

Double check: 4/24 can be simplified to 1/6, which is the original probability.
6 0
3 years ago
If the first step in the solution of the equation -9 + x = 5x - 7 is "subtract x," then what would the next step be ?
lutik1710 [3]

Answer:

-1/2=x

Step-by-step explanation:

-9 + x = 5x - 7

     -x      -x

-9=4x-7

+7         +7

-2=4x

-2/4 =4x/4

-1/2=x

5 0
3 years ago
Sal wants to know if he has enough money to buy 4 gallons of gas. If he has $15, and each gallon of gas costs $3.29, which is a
velikii [3]

Answer:

Remember that when you are making stimates, you are going to roiund to the nearest dollar. Since $3.29 is closer to 3 dollars than four dollars, Sam should use the 3 dollars figure to estimate if he can afford 4 gallons of gas.

$3+$3+$3+$3=$12 

The actual value is , so $3 per gallon is indeed a god estimate.

We can conclude that the correct answer is: $3 + $3 + $3 + $3 = 12, so Sal can afford the gas.

If this helped please rate and to be marked brainliest answer would be appreciated

Step-by-step explanation:

7 0
3 years ago
Paola burns 30 calories walking 10 minutes. At this rate, how many calories will she burn in
Dominik [7]

Answer:

45

Step-by-step explanation:

Divide 30 by 10. You get 3. Take three and multiply it by 15. Your answer is 45.

3 0
3 years ago
In the xy-plane , the graph of y=x^2 and the circle with center ( 0,1) and the radius 3 have how many points of intersection ?
Nikitich [7]
There are 2 points of intersection
5 0
3 years ago
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