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3 years ago

Which is the equation of a line that has a slope of -2/3 and passes through

Mathematics

1 answer:

Basile [38]3 years ago

5 0

answer

y= -2/3x + b

Step-by-step explanation:

y=mx + b

y= -2/3 + b

The m is slope and b is y-intercept

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The following formula relates three quantities: Force (F), mass (m), and acceleration (a).

Pachacha [2.7K]

(a) F=ma

a=F/m

(b) a=25/10

a=2.5

2.5*10=25

m=5

5*5=25

7 0

3 years ago

Which phrase best describes a scatter plot in which variables are correlated with r=-0.19 ?

AnnZ [28]

The answer to your question is C because it makes sense

4 0

3 years ago

Read 2 more answers

Explain relationship between the factors of a quadratic expression, the roots of the related quadratic equation, and the x-inter

Zinaida [17]

Step-by-step explanation:

So, let's use x2 - 3x - 28 as an example.

It's factors are (x - 7)(x + 4).

The roots are the x-values that make our expression equal 0. In order for x2 - 3x - 28 to equal 0, either of our factors need to equal 0, since 0 times anything is 0.

x2 - 3x - 28 = 0

(x - 7)(x + 4) = 0

x - 7 = 0

x = 7

(7 - 7)(7 + 4) = 0(11) = 0

x + 4 = 0

x = -4

(-4 - 7)(-4 + 4) = -11(0) = 0

That gives us two points on our graph, (7,0) and (-4,0). Where are those? On the x-axis! Thus, there are our x-intercepts.

By the way, for the future, along the x-axis, y = 0, so if you are asked for the x-intercepts (or roots), set y = 0 and solve for x.

Along the y-axis, x = 0, so if you are asked for the y-intercepts, set x = 0 and solve for y.

y = 02 - 3(0) - 28

y = -28

So, the y-intercept(s) of our same equation is y = -28, or (0,-28).

Boom.

3 0

3 years ago

Help plzzzzzzzz do these two questions and I’ll mark Brainlynest

marin [14]

Answer:

Step-by-step explanation:

Q1: <B = 150 °

If two parallel lines are cut by a transversal, then alternate interior angles are congruent.

8x-10 = 3x+90

5x=100 (subtract 3 from both sides)

x=20 (divide both sides by 5)

x = 20

<B= 3x +90

<B = 3 (20) +90

<B = 60 + 90

<B = 150

Q2: 62

An angles complement (not compliment, haha) is what the number that added to the angle equals 90°.

An angle is 34 more than its complement.

Let x represent the angle.

Let y represent its complement.

x= 34 +(90-x)

y= (90-x)

x + y = 90

34 + (90-x) + (90-x) =90

x= 62

Check the answer.

x= 34 more than complement.

62-34=28

62+28=90

Checked!

Words of encouragement:

Good luck!

3 0

4 years ago

Celebrity A has 400 followers on social media and is gaining 75 followers each day. Celebrity B has 1,000 followers on social me

MariettaO [177]

It takes 6 days for both of them to have same number of followers

<em><u>Solution:</u></em>

Let "x" be the number of days

<em><u>Celebrity A has 400 followers on social media and is gaining 75 followers each day</u></em>

We can frame a equation as:

Celebrity A : 400 + 75(number of days)

Celebrity A : 400 + 75x --------- eqn 1

<em><u>Celebrity B has 1,000 followers on social media, but is losing 25 followers a day</u></em>

We can frame a equation as:

Celebrity B : 1000 - 25(number of days)

Here we use negative sign to denote losing of followers

Celebrity B : 1000 - 25x --------- eqn 2

For both of them to have same number of followers, eqn 1 must be equal to eqn 2

$400 + 75x = 1000 - 25x\\\\\text{Solve the above equation for x}\\\\75x + 25x = 1000 - 400\\\\\text{Combine the like terms }\\\\100x = 600\\\\x = 6$

Thus it takes 6 days for both of them to have same number of followers

5 0

3 years ago