MATHEMATICS MIDDLE SCHOOL

7. 2(a + 1) = 2(2-3)​

Answers

Answer 1
Answer:

Answer:

#YOUCHEAPSUCKA

the answers is = -2

Step-by-step explanation:

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Which of the following statements is NOT true? • _ •

Answers

C becouse not all triangles are regular

A store offers a 10% discount on all merchandise as part of its anniversary sale.Select all statements that are correct.


A jar that costs $10 will cost $11 after the discount.


A bag that costs $30 will cost $27 after the discount.


A shirt that costs $20 will cost $18 after the discount.


A table that costs $50 will cost $55 after the discount.


( There can be multiple answers. )

Answers

A bag that costs $30 will cost $27 after the discount. 
A shirt that costs $20 will cost $18 after the discount.

the base of a right rectangular prism has an area of 173.6 square centimeter and a height of 9 centimeter. what is the volume in cubic centimeter, of the right rectangular prism ?

Answers

Answer: 1562.4\ cm^3

Step-by-step explanation:

We know that the volume of rectangular prism is given by :-

\text{Volume}=\text{base area}* \text{height}

Therefore, for the volume of given rectangular prism the volume will be:-

\text{Volume}=173.6*9\n\n\Rightarrow\ \text{Volume}=1562.4\ cm^3

Hence, the volume of the given rectangular prism= 1562.4\ cm^3
V=l*w*h 
or
V=b*h

You already have the width and length multiplied so you only hav eto multiply the height by the area now.
173.6*9=1562.4

The volume of the rectangular prism is 1,562.4 cubic cm

Your help is much appreciated. Thank you.

Answers

Answer:

A

Step-by-step explanation:

If I am not wrong, the answer is A. If you take the sides of ΔABC and multiply all of the sides by three you get ΔDEF.

If I can get the brainliest that would help me out a lot thanks.

What is the slope between the points (3, 5) and (-2, -4)?A.9/5
B.1
C.5/9
D.-5/9

Answers

the answer is B. 1
^^
To find slope, we follow this : m = (y2 - y1)/(x2 - x1)
(3, 5) and (-2, -4) 

m = -4 - 5 / -2 - 3
m = -9/-5
m = 9/5

So, your answer would be: A) 9/5

Find k if (x-3) is a factor of k^(2) x^(2) -kx-2. 

Answers

w(x)=k^2x^2-kx-2\n\n(x-3)\ is\ a\ factor\ w(x)\ then\ w(3)=0.\n\nSubstitute:\n\nk^2\cdot3^2-k\cdot3-2=0\n9k^2-3k-2=0\n9k^2-6k+3k-2=0\n3k(3k-2)+1(3k-2)=0\n(3k-2)(3k+1)=0\iff3k-2=0\ \vee\ 3k+1=0\n3k=2\ \vee\ 3k=-1\n\n\underline{\underline{k=(2)/(3)\ \vee\ k=-(1)/(3)}}
k can be (-1/3) or (2/3).
since (x-3) is a factor. if you put x=3 in the equation, it must be equal to zero. So the equation becomes (9k2 - 3k -2 = 0). if you solve this you will get k=(-1/3) and k=(2/3). You can substitute this k in the original equation and check, (x-3) is a factor.
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