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3 years ago

If f(x) = 4x + 12 is graphed on a coordinate plane, what is the y-intercept of the graph

Mathematics

1 answer:

Lelechka [254]3 years ago

7 0

The answer is 12 because the linear equation is mx+b,where m is the slope and b is the y-intercept.

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For the given image and scale factor, which ordered pair is one of the pre-image vertices if the center of the pre-image is also

musickatia [10]

Answer:

(3/5, 1)

Step-by-step explanation:

5 0

2 years ago

Where are the Cookies? Mrs. Goodwin left a tray of eookies on the counter early one morning. Dean walked by before lunch and dec

dsp73

24 cookies

dean ate 8 cookies

elise ate 4 cookies

clark ate 6 cookies

Step-by-step explanation:

i am pretty sure this is correct

make a diagram of a circle with twelve spots

change 1/3 to 4/12, so color in 4 spots for dean

multiplie 1/4 times 8/12 ( the remaining spots), color in that number of spots for elise

do the same with 1/2, color in the amount of spots for clark

you will have 3 spots left, meaning each spot is worth 2 cookies

multiplie the number of spots times two to get your answer for each person

6 0

2 years ago

The old time train museum is raising the price of tickets for train rides.Tickets used to cost $4.80 each. The new ticket price

SVETLANKA909090 [29]

Only add $4.80 + $1.25

5 0

3 years ago

Read 2 more answers

Solve equation, check for extraneous solutions

fiasKO [112]

Start with

$1=\dfrac{1}{n^2}+\dfrac{n^2-4n-5}{3n^2}$

We observe that both fractions are not defined if $n=0$ . So, we will assume $n \neq 0$ .

We multiply both numerator and denominator of the first fraction by 3 and we sum the two fractions:

$1=\dfrac{3}{3n^2}+\dfrac{n^2-4n-5}{3n^2} = \dfrac{n^2-4n-2}{3n^2}$

We multiply both sides by $3n^2$ :

$n^2-4n-2=3n^2$

We move everything to one side and solve the quadratic equation:

$2n^2+4n+2=0 \iff 2(n^2+2n+1)=0 \iff 2(n+1)^2=0 \iff n+1=0 \iff n=-1$

We check the solution:

$1=\dfrac{1}{1}+\dfrac{1+4-5}{3} \iff 1 = 1+0$

which is true

8 0

3 years ago

To study the effectiveness of vitamin C in preventing colds, a researcher recruited 200 volunteers. She randomly assigned 100 of

Paul [167]

Answer:

The claim made by the researcher lacks the validity on basis of reasons as indicated in the explanation.

Step-by-step explanation:

The claim made by the researcher is not valid on basis of following reasons:

Interacting variables are not mapped accurately. The additional variables as the health status of the volunteers, eating and fitness habits are not considered in the consideration. This results in a in complete validation.
The placebo effect is not catered accordingly. As the half of the volunteers are taking nothing, this is not the direct influence of the placebo and thus double-blinded testing for placebo effect is to be ensured in future experiments.
The environmental effects are not considered as the effect under study is dependent on the environmental effects, thus the claim is biased and the generalization is not valid.

5 0

2 years ago