MATHEMATICS MIDDLE SCHOOL

Which of the following is a solution to this inequality? Y<2/3x+2(0,3)
(-3,1)
(3,5)
(1,2)

Answers

Answer 1
Answer:

Answer:

(1,2)

Step-by-step explanation:

I graphed the inequality on the graph below and found which answer was a solution.

If this answer is correct, please make me Brainliest!

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Of the 60 seeds that you plant, 80% germinate. How many seeds germinate?

Answers

hea right its 48 here is how it works


4/5 by 60/1
5into 60 =12
multiple that by 4
Im not sure but I think its 48, excuse me if im wrong.

Using the polynomials Q = 3 x2 + 5 x - 2, R = 2 - x2 , and S = 2 x + 5, perform the indicated operation. Q - [ R + S ]

Answers

Answer:

4x^2 + 3x - 9

Step-by-step explanation:

First, add together functions R(x) and S(x).  Stack them vertically and combine like terms:

R(x) = 2 - x^2

S(x) = 2x + 5

------------------

(R+S)(x) = -x^2 + 2x + 7

Now subtract the above result from Q(x):

Q(x) - (R(x) + S(x)) =  3x^2 + 5x - 2  + x^2 - 2x - 7, or 4x^2 + 3x - 9

The roots of the equation x²-kx+28=0 are alpha (a) and alpha (a) + 3.find the values of k.​

Answers

The possible values of k are -11 and 11

Solution:

Given that equation is:

x^2 - kx + 28 = 0

Roots are:

\alpha\n\n\alpha + 3

To find: value of x

The general quadratic equation is:

ax^2 + bx + c = 0

\text{ Product of roots } = (c)/(a)\n\n\text{ Sum of roots } = (-b)/(a)

From given,

x^2 - kx + 28 = 0

a = 1

b = -k

c = 28

Therefore,

Product\ of\ roots = (28)/(1) = 28

Sum\ of\ roots = (-k)/(1) = -k

Given roots are:

\alpha\n\n\alpha + 3

Therefore,

The two roots are two numbers whose difference is 3 and whose product is 28

Those two roots are 4 and 7 or -4 and -7

Then, sum of roots are:

4 + 7 = 11

-4 - 7 = -11

Therefore, the possible values of k are -11 and 11

Molly uses 192 beads to make a bracelet and a necklace. It takes 5 times as many beads to make a necklace than it does to make a bracelet. How many beads are used to make the necklace?

Answers

First you do 192*5 and you get 960.You then subtract 192 from 960 and you get 768

What divide by what equals 21

Answers

Just multiply 21 by 2. 
21 times 2 = 42

We have our results ....   42 / 2 = 21
If you just want some examples: 105/5=21,   63/3=21,    441/21=21

2/5 of 50 = 1/5 of 100

Answers


2/5 of 50=20

1/5 of 100=20

therefore, this is correct
Yes, that would be correct
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