MATHEMATICS MIDDLE SCHOOL

What is the answer ?

Answers

Answer 1

Answer:

-7y -3y +2 = -8y-8

-10y +2 = -8y-8

-10y +8y = -8 -2

-2y = -10

2y = 10

y = 10/2 = 5

Answer 2

Answer:

Answer:

y = -5/6

Step-by-step explanation:

7y - 3y + 2 = -8y - 8

12y + 2 = -8

12y = -10

y = -10/12 = -5/6

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5y + 3 = 4y - 9 what is y?

Find DB
read picture

Answers

By applying the basic proportionality theorem to triangle ABC, the length of DB is: A. 18 cm.

What is the basic proportionality theorem?

In Mathematics and Euclidean Geometry, the basic proportionality theorem states that when any of the two sides of a triangle is intersected by a straight line which is parallel to the third side of the triangle, then, the two sides that are intersected would be divided proportionally and in constant ratio.

By applying the basic proportionality theorem to triangle ABC, we have the following:

AD/DB = CE/EB

24/DB = 12/9

12DB = 216

DB = 216/12

DB = 18 cm.

Read more on basic proportionality theorem here: brainly.com/question/3213812

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Answer:

Step-by-step explanation:

X= 18

24/x=12/9

That is ad/db=ce/eb

in class, matthew stated "i think that a negative is like an opposite. That is why multiplying a negative times a negative equals a positive. The opposite of negative is positive, so it is just like multiplying the opposite of a negative twice, which is two positives." Do you agree or disagree with this statement? What would you say in response to him?

Answers

Answer: Yes, I agree with this statement.

Step-by-step explanation:

Yes, I agree with this statement.

Whenever we multiply two negative numbers, we get a positive number.

As two negatives makes a positive.

Negative is just like an opposite.

Opposite of 4 is -4.

and negative of 4 is also -4.

The opposite of negative is positive.

i.e. opposite of -4 is 4.

So, Negative is always treat as opposite.

Yes and no. A negative number and it's opposite are 'integers.' Yes, a negative and a negative multiplied together give you a positive. The two negative signs cancel out making it positive. But no, a positive and a positive multiplied together do not give you a negative. When you subtract positive numbers you can get a negative, but not when multiplying. If you were to do a positive times a negative it would be negative because the positive can't cancel it out. Example: -3 · -3 = 9. [] 3 · 3 = 9. [] -3 · 3 = -9. Other than the positive number part, the statement is true about the negatives. I hope that helped!

Can you help me on a math problem?

Answers

Answer:

18...................

Find the quotient and remainder of 452 divided by 8

Answers

452÷8= 56.5
56 remainder 5

multiply or divide and then simplify

(x+1)^2/(x-5)*(x-3)/(x+1)

3x+3/2 divided by 4/9x+9

4a/3a-3*3(a-1)/16a

x+2/x-1 divided by 5x+10/x-2

Answers

$((x+1)^2)/(x-5)\cdot(x-3)/(x+1)=(x+1)/(x-5)\cdot(x-3)/(1)=((x+1)(x-3))/(x-5)=(x^2-3x+x-3)/(x-5)=(x^2-2x-3)/(x-5)\n\nD:x\neq5\ \wedge\ x\neq-1$

$(3x+3)/(2):(4)/(9x+9)=(3x+3)/(2)\cdot(9x+9)/(4)=(27x^2+27x+27x+27)/(8)=(27x^2+54x+27)/(8)\n\nD:x\neq1$

$(4a)/(3a-3)\cdot(3(a-1))/(16a)=(1)/(3a-3)\cdot(3a-3)/(4a)=(1)/(4a)\n\nD:a\neq1\ \wedge\ a\neq0$

$(x+2)/(x-1):(5x+10)/(x-2)=(x+2)/(x-1)\cdot(x-2)/(5x+10)=(x+2)/(x-1)\cdot(x-2)/(5(x+2))=(1)/(x-1)\cdot(x-2)/(5)=(x-2)/(5x-5)\n\nD:x\neq1\ \wedge\ x\neq2\ \wedge\ x\neq-2$

(30 POINTS!!!) One press can run the day’s newspapers in 6 hours, while another can do the same job in 8 hours. After running together for 2 hours to complete the job, the faster one breaks. How much longer must the slower press run to finish the newspapers?