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Effectus [21]
3 years ago
7

Multiplying a number by 2 and then adding 5 gives the same number as subtracting a number from 23. What is the number?

Mathematics
1 answer:
Andreas93 [3]3 years ago
3 0
2 * x + 5 = 23 - x <=> 3 * x = 18 <=.> x = 6;
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Plz help i need to know 94=10a-7 and 7k+10=31
Alexandra [31]

Answer:

a=10.1

k=3

Step-by-step explanation:

Lets solve the first equation first.

94=10a-7

Lets add 7 to both sides.

101=10a

Divide both sides by 10 to isolate a

101/10=a

a=10.1

Lets do the second equation.

7k+10=31

Subtract 10 from both sides

7k=21

Divide 7 by both sides to isolate k

k=3

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3 years ago
Can someone tell me the answers for all 10 questions
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3 years ago
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ladessa [460]

Answer:

1.) a line parallel to the line will have slope 2/3

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Step-by-step explanation:

The slope of parallel lines must always be the same. Therefore, if a line is parallel to y = 2/3x - 4, the other line must have slope 2/3 and not have the same y-intercept (otherwise it would represent the same line).

The slope of perpendicular lines are reciprocals with opposite signs. Basically, if you have one slope of one equation, to find the perpendicular slope you would simply flip the slope over and change the sign.

For example: if the slope was 2/3, the perpendicular slope is flipping 2/3 upside down to get 3/2 and changing the sign from positive to negative = -3/2

6 0
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SashulF [63]

Answer:

18 - 5 + 4 / 5 x 1

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6 0
3 years ago
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What is the period of the sinusoidal function?
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Answer:

Is the length of a complete cycle.

Step-by-step explanation:

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3 years ago
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