All categories

2 years ago

Heeeeellllppp PLEASE!!!! 20 POINTS!!!

Mathematics

1 answer:

Scilla [17]2 years ago

3 0

The formula of a midpoint:

$\left(\dfrac{x_1+x_2}{2};\ \dfrac{y_1+y_2}{2}\right)$

D is midpoint of TR.

We have T(-2a, 0) and R(-2b, 2c). Substitute:

$x=\dfrac{-2a+(-2b)}{2}=\dfrac{-2a-2b}{2}=\dfrac{2(-a-b)}{2}=-a-b\\\\y=\dfrac{0+2c}{2}=\dfrac{2C}{2}=c$

<h3>Answer: b. (-a - b, c)</h3>

You might be interested in

What is the answer a or b to this question

galina1969 [7]

The answer would be A.

Explanation:

If they enter with one car, that’s a price of $3 for the car alone. Because there’s also a fee for each person who enters, and there is a family of 5 who enters, x is representative of the cost for each person who enters. Therefore, there would be 5 x’s and one 3 that when solved would add up to the total of $45 they spent. That would mean A is correct because the equation would be x + x + x + x + x + 3 = 45.

5 0

1 year ago

Two angles of a quadrilateral measure 325° and 10°. The other two angles are in a ratio of 2:3. What are the measures of those t

Dmitry_Shevchenko [17]

Answer:

The answer is 60 and 80

Step-by-step explanation:

7 0

2 years ago

Write the word sentence as an equation. Then solve.

nekit [7.7K]

Answer:

Equation- p-6= -14

Answer- p=-8

Step-by-step explanation:

8 0

2 years ago

Solve 6x+57=2x+315 . A. x=−911 B. x=911 C. x=119 D. x=−119

liubo4ka [24]

Explanation:

Remember: we have to isolate the variable x, so that means we have to get x by itself.

Step 1:

Let’s look at our equation:

$6x+57=2x+315$

Let’s subtract 2x from both sides of the equation, since our goal is to isolate the variable. You could also subtract 6x from both sides, but you would end up with a negative number, and I find it easier to deal with positive numbers.

$6x(-2x)+57=2x(-2x)+315\\4x+57=315$

Step 2:

Now, let’s subtract 57 from both sides of our equation.

$4x+57(-57)=315(-57)\\4x=258$

Step 3:

Since we have to isolate x, let’s divide both sides of the equation by 4.

$4x/4=x\\258/4=64.5$

Our final answer: x = 64.5

None of your options is the correct answer. Notify your teacher, tutor, etc. since there none of the options are correct.

4 0

3 years ago

The unshaded area inside the figure to the right is 648 in.² Use this fact to write an equation involving x. Then solve the equa

FrozenT [24]

The second order polynomial that involves the variable x (border inside the rectangle) and associated to the unshaded area is x² - 62 · x + 232 = 0.

<h3>How to derive an expression for the area of an unshaded region of a rectangle</h3>

The area of a rectangle (A), in square inches, is equal to the product of its width (w), in inches, and its height (h), in inches. According to the figure, we have two proportional rectangles and we need to derive an expression that describes the value of the unshaded area.

If we know that A = 648 in², w = 22 - x and h = 40 - x, then the expression is derived below:

A = w · h

(22 - x) · (40 - x) = 648

40 · (22 - x) - x · (22 - x) = 648

880 - 40 · x - 22 · x + x² = 648

x² - 62 · x + 232 = 0

The second order polynomial that involves the variable x (border inside the rectangle) and associated to the unshaded area is x² - 62 · x + 232 = 0. $\blacksquare$

To learn more on polynomials, we kindly invite to check this verified question: brainly.com/question/11536910

3 0

2 years ago