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lisabon 2012 [21]

3 years ago

7

PLEEEEEEEEAAAAAAAAASSSSSSSE HELP ASAPPPPP!!!! WILL NAME BRAINLIEST!!! (HINT to get brainiest from me: please help with all five

problems and if your just here to type this and an answer: iguhadfkajsrgfkuab... just don't...)

1 answer:

Anuta_ua [19.1K]3 years ago

7 0

Answer:

1 <u>6</u>

2 10

3 $\frac{18}{5}$

4 $\frac{8}{3}$

5 5

Step-by-step explanation:

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#78 please explain work

kenny6666 [7]

Answer:

$0.40c + $0.20h = $11

Step-by-step explanation:

c = chocolate pieces

h = hard candy

$0.40c + $0.20h = $11

5 0

3 years ago

Write the equation of the line that is the perpendicular bisector of the segment with endpoints (4, 1) and (2, -5)

Sedbober [7]

Answer: $\bold{y=-\dfrac{1}{3}x-1}$

<u>Step-by-step explanation:</u>

(4, 1) & (2, -5)

First, find the slope (m) and then the perpendicular (opposite reciprocal) slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}\\\\\\m=\dfrac{-5-1}{2-4} = \dfrac{-6}{-2}=3\quad \rightarrow \quad m_{\perp}=-\dfrac{1}{3}\\$

Next, find the midpoint of (4, 1) and (2, -5):

$Midpoint=\bigg(\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\bigg)\\\\\\.\qquad \qquad=\bigg(\dfrac{4+2}{2},\dfrac{1-5}{2}\bigg)\\\\\\.\qquad \qquad=\bigg(\dfrac{6}{2},\dfrac{-4}{2}\bigg)\\\\\\.\qquad \qquad=(3, -2)$

Lastly, input the perpendicular slope and the midpoint into the Point-Slope formula to find the equation of the line:

$y - y_1 = m_{\perp}(x - x_1)\\\\y - (-2) = -\dfrac{1}{3}(x - 3)\\\\y + 2=-\dfrac{1}{3}x +1\\\\y =-\dfrac{1}{3}x - 1\\$

6 0

3 years ago

What is the product of 3x+4 and 6x^{2} −5x+7?

LUCKY_DIMON [66]

$(3x + 4)(6 {x}^{2} - 5x + 7) \\ = 18 {x}^{3} - 15 {x}^{2} + 21x + 24 {x}^{2} - 20x + 28 \\ = 18 {x}^{3} + 9 {x}^{2} + x + 28$

I hope I helped you^_^

8 0

3 years ago

The sum of a number and 4.7 is 8.1.

Sloan [31]

<em>Greetings from Brasil...</em>

Be that unknown number X

Then we can write the following expression:

X + 4.7 = 8.1

<h2>X = 3.4</h2>

5 0

4 years ago

Someone plz help me ASAP!!

solong [7]

Answer:

58

Step-by-step explanation:

The triangles are congruent so you can do 180-32-90, which is equal to the angle at c

3 0

3 years ago

Read 2 more answers