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3 years ago

Solve each equation for the unknown 1. 5 + y = 7.2. 3.8 = a + 2.55. + p = 9 1/3

Mathematics

2 answers:

natima [27]3 years ago

8 0

1. Y=2

2.A=1.3

5.p=28/3

Alexxandr [17]3 years ago

3 0

Answer:

1. 5 + y = 7

⇒ y = 7 - 5

⇒y = 5

2. 3.8 = a + 2.5

⇒ a = 2.5 - 3.8

⇒ a = -1.3

3. 5 + p = 9 1/3 

⇒ p = 9 1/3 - 5

⇒ p = 28/3 - 5

⇒ p = 28/3 - 15/3

⇒ p = 13/3

⇒ p = 4 1/3

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3 years ago

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3 years ago

What is the value of f(x) = 9x when x = -2?

Masteriza [31]

Answer is 9(-2)=-18 but that choice doesn't appear in your list of answers

3 0

3 years ago

Read 2 more answers

(25 POINTS!!)What is the equation of the line that passes through the points (15,9) and (-2,9)?

Viktor [21]

Let's use the point-slope formula...

y-y1=m(x-x1)

m is the slope.

y--9=7(x--2)

Subtracting a negative number is the same as adding a positive number...

y+9=7(x+2)

y+9=7x+14

Let's subtract 9 from both sides...

-9+y+9=7x+14-9

y=7x+5

The formula is now in the format of...

y=mx+b

This is known as slope-intercept.

m is the slope.

b is the y-intercept, the value of y when x=0.

Standard formula is...

Ax+By=C

Neither A nor B equal zero.

A is greater than zero.

y=7x+5

Let's move 7x to the left side of the equation. It becomes negative.

-7x+y=5

Let's multiply both sides by -1 to render A greater than zero.

-1(-7x+y)=(5)(-1)

7x-y=-5 

This is the equation in standard form.

5 0

3 years ago

Read 2 more answers

Solve each equation for the unknown 1. 5 + y = 7.2. 3.8 = a + 2.55. + p = 9 1/3 ​

Solve each equation for the unknown 1. 5 + y = 7.2. 3.8 = a + 2.55. + p = 9 1/3