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3 years ago

14

HELP PLEASE ASAP!!!! 20 POINTS!!!!

1 answer:

Shalnov [3]3 years ago

8 0

$\text{The formula of a midpoint:}\\\\\left(\dfrac{x_1+x_2}{2};\ \dfrac{y_1+y_2}{2}\right)\\\\\text{We have}\ R(-2b,\ 2c)\ \text{and}\ T(-2a,\ 0).\ \text{Substitute:}\\\\x=\dfrac{-2b+(-2a)}{2}=\dfrac{-2b}{2}+\dfrac{-2a}{2}=-b-a\\\\y=\dfrac{2c+0}{2}=\dfrac{2c}{2}=c\\\\Answer:\ \boxed{b.\ (-a-b,\ c)}$

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Maya is helping a gardener plant 300 bulbs. They plant 20% of the bulbs on Monday and 30% of the bulbs on Tuesday. Maya says thi

Katyanochek1 [597]

Answer:

because the total is 300 not 100 so 50 is not reasonable because that is the percentage they planted and since it is more than 100 then it should be a percent of 300 not 100. Maya is wrong about placing 50 bulbs instead they placed 150.

Step-by-step explanation:

8 0

2 years ago

which equation is the quadratic variation equation for the relatonship? the variable y varies directly with x^2 and y=36 when x=

svetoff [14.1K]

For this case we have a direct variation of the form:

$y = kx ^ 2$

Where,

<em>k: proportionality constant </em>

We must find the value of k.

For this, we use the following data:

$y = 36\\x = 3$

Therefore, replacing values we have:

$36 = k (3) ^ 2$

Rewriting:

$36 = 9k$

Clearing the value of k we have:

$k = \frac {36} {9}\\k = 4$

Therefore, the direct variation equation is given by:

$y = 4x ^ 2$

Answer:

The quadratic variation equation for the relatonship is:

$y = 4x ^ 2$

8 0

2 years ago

Adult tickets to a play cost $1.75 each and student tickets cost $1.25 each. Suppose there are twice as many student tickets sol

nikitadnepr [17]

Answer: the number of adult tickets sold is 400

the number of student tickets sold is 200

Step-by-step explanation:

Let x represent the number of adult tickets sold at the play.

Let y represent the number of student tickets sold at the play.

Adult tickets to a play cost $1.75 each and student tickets cost $1.25 each. If the income from the play was $1,700, it means that

1.75x + 1.25y = 1700 - - - - - - - - - -1

Suppose there are twice as many student tickets sold as adult tickets. This means that

y = 2x

Substituting y = 2x into equation 1, it becomes

1.75x + 1.25 × 2x = 1700= 1700

1.75y + 2.5y = 1700

4.25y = 1700

y = 1700/4.25 = 400

x = y/2 = 400/2 = 200

8 0

3 years ago

Marcy makes 15 of 20 free throws at basketball practice. What is the probability that she will miss her free throw? Possible ans

arlik [135]

Answer:

3/4

Step-by-step explanation:

15/20=3/4 if you divide both sides by 5

3 0

2 years ago

Read 2 more answers

Which word correctly completes the sentence. the motorcycle fell over on _______ side A.it's B.its

777dan777 [17]

B "it's" means (it is) and that would not make sense if it fell on it is side .

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3 years ago