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Bezzdna [24]
4 years ago
5

Which expression is equivalent to the expression -1/2(-3/2x+6x+1)-3x

Mathematics
1 answer:
zloy xaker [14]4 years ago
5 0

Answer:

6x+3/4x-1/2

I just figured this out i know how you feel.

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Which point lies on the line described by the equation below? y+ 4 = 4(x-3) O A. (3,-4) O B. (2,9) O C. (0,0) O D. (1,-11) E. (1
dangina [55]

The point (3, -4) lie on the line y + 4 = 4(x - 3) because the point (3,-4) satisfy the line option (A) is correct.

<h3>What is a straight line?</h3>

A straight line is a combination of endless points joined on both sides of the point.

The slope 'm' of any straight line is given by:

\rm m =\dfrac{y_2-y_1}{x_2-x_1}

We have an equation of a line:

y + 4 = 4(x - 3)

A (3,-4)  

Plug the above points in the equation of the line.

-4 + 4 = 4(3 -3)

0 = 0    (true)

The point lies on the line

Similarly checking for others points we will find that points (2,9), (0,0) , (1,-11), (1,11), and (-2, 3) does not lie on the line y + 4 = 4(x - 3)

Thus, the point (3, -4) lie on the line y + 4 = 4(x - 3) because the point (3,-4) satisfy the line option (A) is correct.

Learn more about the straight line here:

brainly.com/question/3493733

#SPJ1

4 0
2 years ago
Find the value of a and b in the picture below.
alex41 [277]

Answer:

Where is the picture?????

8 0
3 years ago
Simplify 5(3x-6)-8(3x-7)<br><br> Can someone explain how to do this in English?
Lunna [17]
Remember the distributive property? It goes like x(a+b)=xa+xb... For example 3(6+7)=(3*6)+(3*7)=39
Same here
5(3x-6)-8(3x-7)
do the thing
(15x-30)-(24x-56)
Take parentheses off.
15x-30-24x+56
//WHY PLUS 56 NOT MINUS?
//because there was a minus sign outside the original parentheses, so the signs inside have to be flipped when the parentheses is taken off
//Let's simplify now
15x-24x-30+56
-9x+26
^^The answer!
5 0
3 years ago
Read 2 more answers
Select the correct answer from the drop down menu
anygoal [31]

The last one , because I will now solve it for you and prove therefore.

x²–4x+5=0;

D=(–4)²–4•5=16–20= –4= (2i)².

So:

x1= (4–2i)/2= 2–i

x2= (4+2i)2= 2+i.

This is the whole answer....

Three other u will solve by yourself and have roots which will not be suitable.

6 0
3 years ago
The average number of calories in a 1.5-ounce chocolate bar is 225. Suppose that the distribution of calories is approximately n
s344n2d4d5 [400]

Answer:

The probability that a randomly selected chocolate bar will have a. Between 200 and 220 calories will be 0.3023

Step-by-step explanation:

Given:

True mean=225

S.D=10

X1=200 and X2=220

To Find:

P(X1<x<X2)

Solution:

<em>BY using Z-table for probability and Z-score we can proceed.</em>

So

For 200 calories Z will be ,

Z=(sample mean -true mean)/S.D

=200-225/10

=-25/10

=-2.5

For 220 calories Z will be ,

Z=220-225/10

=-5/10

=-0.5

So required probability will be

P(-2.5

=P(-2.5

=P(0>z>2.5)-P(0>z>0.5)

=0.4938-0.1915

=0.3023

6 0
3 years ago
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