MATHEMATICS HIGH SCHOOL

The equation of a line is y = -0.8x + 4. If x = a - 3, what is the value of y when a = -2?A) -4

B) 0

C) 4

D) 8

Answers

Answer 1

Answer:

Answer:y = 0.8x and y = -0.12x2 + 20

Step-by-step explanation:

Answer 2

Answer: X=(-2)-3
X= 6

Y=-0.8(6) +4
Y= -4.8 + 4
Y=.8

Related Questions

At 3:30 P.M. the angle between the hands of a clock is
Part B: Factor x2 + 10x + 25. Show your work. (3 points)
What is the standard error of the proportion if 80% of the 1,200 respondents in a yes/no survey answered "no"?
What is the solution to the equation 3x-5=2x+8+x?A) identity ( many solutions) b) no solution c) x=0 d) x=2
Use inductive reasoning to determine the next three terms in the sequence. 3, -6, 12, -24, 48, , ,

Solve for x. -8x = -48

Answers

x=6
hopefully this helps

What's the gcf of 26?

Answers

:)
........
the answer is 26

Help me yaall for 17 point

Answers

8, look at the attachment for work

MULTIPLE CHOICE, PLS HELP!!θ lies in Quadrant II .

sinθ=4/7

What is the exact value of cosθ in simplified form?

Answers

We know that : Sin²θ + Cos²θ = 1

Given : Sinθ $\bf{= (4)/(7)}$

$\bf{\implies ((4)/(7))^2 + Cos^2(\theta) = 1}$

$\bf{\implies Cos^2(\theta) = 1 - (16)/(49)}$

$\bf{\implies Cos^2(\theta) =((49 - 16)/(49))}$

$\bf{\implies Cos^2(\theta) =((33)/(49))}$

$\bf{\implies Cos(\theta) = (\pm)((√(33))/(7))}$

Given : θ lies in Quadrant II

We know that : Cosθ is Negative in Quadrant II

$\bf{\implies Cos(\theta) = (-)((√(33))/(7))}$

Option 3 is the Answer

Find the range of the data.

76, 72, 81, 71, 73, 89, 83, 75

Answers

Answer:

Range is 18

Step-by-step explanation:

In order: 71, 72, 73, 75, 76, 81, 83, 89

The range is the smallest number subtracted by the largest number:

89-71=18

Answer:

$18$

Step-by-step explanation:

$71, 72, 73, 75, 76, 81, 83, 89$

$\mathrm{The \: range \: is \: equal \: to:}$

$\mathrm{Biggest \: no. - Smallest \: no.}$

$89-71$

$=18$

A scientist begins an experiment with a petri dish containing a culture of bacteria cells and records the cell growth every hour. At 1 hour, the bacteria had grown to 880 cells, and at 2 hours, had grown to 3,520 cells. Which function can be used to represent the relationship between the number of bacteria cells, y, and the time in hours, x?

Answers

Answer: Hello!

we know that in the first hour, we had 880 cells, and in the second hour we have 3520 cells. The first step is see how much the population changed in this one hour, this can be done by looking into the quotient:

3520/880 = 4

then the population of cells cuatriplied in one hour, and is safe to asume that every hour that pases, the population will catriplied again.

so if the populationat hour 1 is: 880

at hour 2 is: 4*880

at hour 3 is = 4*4*880 and so on.

This can be described with an exponential function as follows

$P(t) = 880*4^(x-1)$