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3 years ago

6

An object’s speed decreases by 6% for each minute that it is slowing down. What is the percent that it’s speed will decrease ove

r half an hour?

1 answer:

Zarrin [17]3 years ago

3 0

It says decreasing so you have to turn it into a percent (.06%) and then sub tract that from 1. After that you put that into an equation.

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Please help me with these two questions, 10 points for each so in total 20!!

saul85 [17]

Answer:

$\large\boxed{Q2.\qquad C.\ -2x+y=-2}\\\boxed{Q4.\qquad C.\ y=3x+12}$

Step-by-step explanation:

Q2:

The point-slope form of an equation of a line:

$y-y_1=m(x-x_1)$

m - slope

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points (4, 6) and (6, 10). Substitute:

$m=\dfrac{10-6}{6-4}=\dfrac{4}{2}=2$

$y-6=2(x-4)$ <em>use distributive property</em>

$y-6=2x-8$ <em>add 6 to both sides</em>

$y=2x-2$ <em>subteact 2 from both sides</em>

$-2x+y=-2$

Q4:

The slope-intercept form of an equation of a line:

$y=mx+b$

m - slope

b - y-intercept

Put the slope m = 3 and the coordinateso f the point (-2, 6) to the point-slope form of an equation of a line:

$y-6=3(x-(-2))$

$y-6=3(x+2)$ <em>use distributive property</em>

$y-6=3x+6$ <em>add 6 to both sides</em>

$y=3x+12$

4 0

3 years ago

PLEASE ANSWER QUICKLY! <br><br> Write an equation for each translation of y = |x|.<br> NUMBER 4

Leya [2.2K]

The answer is d I just did that paper mark me Brainly

3 0

3 years ago

2x² - 5x+1 has roots alpha and beta. Find alpha⁴+beta⁴ without solving the equation.

shepuryov [24]

Answer:

Step-by-step explanation:

$\alpha+\beta=\dfrac{5}{2} \\\\\alpha*\beta=\dfrac{1}{2} \\\\\alpha^2+\beta^2=\dfrac{21}{4} \ (see\ previous\ post)\\\\(\alpha+\beta)^4=\dfrac{625}{16} \\\\=\alpha^4+\beta^4+4*\alpha^3*\beta+6*\alpha^2*\beta^2+4*\alpha*\beta^3\\\\=\alpha^4+\beta^4+4*(\alpha*\beta)(\alpha^2+\beta^2)+6*\alpha^2*\beta^2\\\\\alpha^4+\beta^4=(\alpha+\beta)^4-4*(\alpha*\beta)(\alpha^2+\beta^2)-6*\alpha^2*\beta^2\\\\= \dfrac{625}{16} -4*\dfrac{1}{2} *\dfrac{21}{4} -6*(\dfrac{1}{2})^2 \\\\$

$= \dfrac{625}{16}- \dfrac{168}{16}-\dfrac{24}{16}\\\\\\= \dfrac{433}{16}$

7 0

3 years ago

Pick correct graph from multiple choice options. A.B.C.D

maw [93]

Answer:

it is B

Step-by-step explanation:

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3 years ago

Read 2 more answers

What is 40% of 80? Please.i need to know

svlad2 [7]

Answer:

32 is 40% of 80.

Step-by-step explanation:

80×4÷10=320÷10=32

6 0

3 years ago