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erma4kov [3.2K]
3 years ago
9

Expand and simplify (p+9)(p-4)

Mathematics
2 answers:
Naddik [55]3 years ago
7 0
(p + 9)(p - 4) = FOIL: p^2 - 4p + 9p - 36 = p^2 + 5p - 36 - .--
Mariana [72]3 years ago
4 0
(p + 9)(p-4)

p(p -4) + 9(p -4)

p*p - 4*p + 9*p +9*-4

p² - 4p + 9p - 36

p² + 9p -4p - 36

p² +5p - 36
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Sean counts by 2s from 15 to 35. which number does Sean count?<br><br> HELP ME ASAP!!!
Vladimir [108]

The number that Sean counts is 27.

What number does Sean count?

When Sean counts by 2s from 15 to 35, he would be counting odd numbers. An odd number is a number that cannot be perfectly divided by 2. There would always be a remainder.

Here are the options:

13

27

16

22

To learn more about integers, please check: brainly.com/question/21493341

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4 0
2 years ago
Write the slope-intercept form of the equation of the line described. 8.) through: ( -4 , 5 ) , perpendicular to Y= 3/2x - 2
kozerog [31]

Answer

The equation of the required line in slope-intercept form is

y = (-2x/3) + (7/3)

Comparing this with y = mx + c,

Slope = m = (-2/3)

Intercept = c = (7/3)

Explanation

The slope and y-intercept form of the equation of a straight line is given as

y = mx + c

where

y = y-coordinate of a point on the line.

m = slope of the line.

x = x-coordinate of the point on the line whose y-coordinate is y.

c = y-intercept of the line.

So, to solve this, we have to solve for the slope and then write the eqution in the slope-point form which we can then simplify to the slope-intercept form

The general form of the equation in point-slope form is

y - y₁ = m (x - x₁)

where

y = y-coordinate of a point on the line.

y₁ = This refers to the y-coordinate of a given point on the line

m = slope of the line.

x = x-coordinate of the point on the line whose y-coordinate is y.

x₁ = x-coordinate of the given point on the line

The point is given as (x₁, y₁) = (-4, 5)

Then, we can calculate the slope from the information given

Two lines with slopes (m₁ and m₂) that are perpendicular to each other are related through

m₁ × m₂ = -1

From the line given,

y = (3/2)x - 2

We can tell that m₁ = (3/2), so, we can solve for m₂

(3/2) (m₂) = -1

m₂ = (2/3) (-1) = (-2/3)

We can then write the equation of the given line in slope-intercept form

y - y₁ = m (x - x₁)

y - 5 = (-2/3) (x - (-4))

y - 5 = (-2/3) (x + 4)

y - 5 = (-2x/3) - (8/3)

y = (-2x/3) - (8/3) + 5

y = (-2x/3) + (7/3)

Hope this Helps!!!

4 0
1 year ago
If f(n) = n^ 2 - n, then f(-4) is _____.<br><br> -20<br> 20<br> 12<br> -12
Rainbow [258]
Given  f(n)=n^2-n
           f(-4)=(-4)^2-(-4)=?
nedd some conversation for better understanding
6 0
3 years ago
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What is the inverse of the function h() = −9 + 11? Is it a function?
ycow [4]

Answer:

h=2 , maybe yes

Step-by-step explanation:

this is my answer i don't know if it is right

6 0
3 years ago
Daniel wanted to know his approximate score on the final exam for his mathematics class. His professor hinted that his score was
hammer [34]

Answer:   The raw score for Daniel's exam grade is 101.69.

Step-by-step explanation:

For x be any random variable.

Formula for z-score :

z=\dfrac{x-\mu}{\sigma} , where \mu = population mean

\sigma = population standard deviation.

Let x be the raw score for Daniel's exam grade.

As per given , we have

\mu=90 , \sigma=7 and z= 1.67 , put these values in the above formula , we get

1.67=\dfrac{x-90}{7}\\\\\Rightarrow\ x-90=7(1.67)=11.69\\\\\Righarrow\ x=11.69+90=101.69

Hence, the raw score for Daniel's exam grade is 101.69.

8 0
3 years ago
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