All categories

3 years ago

PLSSSS HELPPPP MEEE I WIIILLL GIVVEEE BRAINLIEST!!!!!!!!!!!!!

Mathematics

2 answers:

kirill115 [55]3 years ago

7 0

Answer:

slope m = 0

Step-by-step explanation:

To find the slope for two points, you need use

m = (y2 - y1)/(x2-x1)

for point 1 (-1, -4) and point 2 (-2, -4)

m = (-4 - (-4)) / ((-2)-(-1))

m = 0 / -1

when the top number is zero, the answer is 0

if you plot the points in a graph, it is a horizontal line or y = mx + b = 0m -4

y = -4

grigory [225]3 years ago

6 0

Answer:

y - y1 = m( x- x1) - this is the formula to be used whenever looking for a slope of points.

from the coordinates choose the points which will be your x, y and the points which will be your x1,y1

then solve for m.

m is the slope.

(-1,-4) are my x, y

(-2,-4) are my x1, y1

then

-4 - (-4) = m(-1 -(-2))

open the brackets

-4 + 4 = m ( -1 +2)

0 = m( 1)

m = 0

slope is 0

You might be interested in

Solve the following quadratic equation<br> 9m2 +9= 11

jeka94

Answer: m=

√2 or m=

−1

√2

Step-by-step explanation:

4 0

3 years ago

Multiply (2n + 2)(2n – 2) A. 4n 2 – 4 B. 4n 2 – 4n – 4 C. 4n 2 + 2n – 4 D. 4n 2 + 4n – 4

sattari [20]

This system can be a bit tricky unless you write it out:
(2n + 2)(2n - 2) ~ First you have to take one variable and multiply it to each of the other two variables, like:
2n * 2n ~ And:
2n * -2 ~ This gives you:
4n^2 - 4n
Now we do this with the other:
2 * 2n
2 * -2
4n - 4
Now we combine them both while adding like terms:
4n^2 - 4
Therefore your answer is: A. 4n^2 - 4
(This is due to how when having the positive 4n subtracted by the negative it cancels it out. Leaving us with the remaining two terms left.)

I hope this helps, have a great rest of your day! ^ ^
~Ghostgate

7 0

2 years ago

9. I NEED HELP ASAP!! PLEASE PUT AND ANSWER AND STEP BY STEP EQUATION!! IF YOU DON'T KNOW THE ANSWER DON'T PUT ANYTHING!!

stiv31 [10]

9.) Answer: B. f(x) = 4 - x

Explanation/Proof:

If we substitute, the answers are correct.

f(x) = 4 - (1)

f(x) = 3 ✅

f(x) = 4 - (2)

f(x) = 2 ✅

And so on and so forth.

3 0

2 years ago

Read 2 more answers

Solve using square root or factoring method

OlgaM077 [116]

9x^2 + 18x + 9 = 5

9(x^2 + 2x +1) - 5 = 0

x^2 + 2x - 4 = 0

Then use the quadratic formula.

8 0

2 years ago

An assembled product is built by 10 worker who coordinate their task. A total of 100 units will be made. Time records indicate t

Brut [27]

Answer:

a) 86%

b) 2nd unit = 82 hs.

3rd unit = 75 hs

c) 100th unit = 36 hs

Step-by-step explanation:

We can model the learning curve for manufacturing the units as:

$t=aX^b$

where t is the time for the Xth unit, and a and b are parameters that we will calculate from the data,

We know that t(1)=95. Then, we have:

$t(1)=a\cdot 1^b=95\\\\a=95$

And we know that the fourth unit (X=4) take 71 hours to be completed (t(4)=71). Then, we can calculate the other parameter as:

$t(4)=95\cdot4^b=71\\\\4^b=71/95\approx 0.7473\\\\b\cdot ln(4)=ln(0.7473)\\\\b=ln(0.7473)/ln(4)=-0.291/1.386\\\\b=-0.21$

We have the model for the learning curve:

$t=95X^{-0.21}$

The learning rate percentage is calculated from the b parameter:

$b=\dfrac{ln(LRP)}{ln(2)}=-0.21\\\\\\ln(LRP)=-0.21*ln(2)=-0.21*0.693=-0.1455\\\\LRP=e^{-0.1455}=0.86$

The learning rate percentage is 86%.

b) The most likely times required for the 2nd and 3rd units are calculated with the model:

$t(2)=95\cdot2^{-0.21}=95*0.864=82\\\\t(3)=95\cdot3^{-0.21}=95*0.794=75$

c) If we use the model to calculate the time required for the 100th unit, we have:

$t(100)=95\cdot100^{-0.21}=95*0.38=36$

8 0

3 years ago