MATHEMATICS MIDDLE SCHOOL

~Please Help~Which table shows a proportional relationship between the number of photo sheets printed and the amount of ink used?

Answers

Answer 1

Answer: the answer is C 20*4.8=96 and 30*3.2=96 so in other ways the are the only one that give the same number.

Answer 2

Answer:

Answer:

Step-by-step explanation:

photo sheets

ink used

3.2

4.8

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Which shows a correct plan Chuck can use to solve this problem? Chuck brushed his teeth 3 times a day for 4 days. Each time he brushed he spent 30 seconds. He used mint toothpaste for 2 of the days. How many times did Chuck use mint toothpaste?

Answers

Chuck used mint tooth paste 6 times because 4x3 eaquals 12 and 12divided by two is 6 .

The answer is 6 times, because it said he used mint toothpaste for two of the days, and 4 divided by 2 equals 2, and you do the same to the 12 because you did 3 times 4 in the beginning, so you do divided by 2, which equals 6. So to find to the seconds, you do 6 times 30, which equals your seconds, which equals 180 seconds. To find the times he used the toothpaste, you just do 12 divided by 2, which equals 6, so now you know that he used the mint toothpaste six times.

Answers
Seconds: 180 seconds
Times he used the mint toothpaste: 6 times.

Hope it works!!!

The square of the sum of two numbers is 144 and the sum of their square is 180, find the numbers

Answers

Answer:

x = 13.35, y = - 1.35

or, x = 1.35, y = - 13.35

or, x = - 13.35, y = 1.35

Step-by-step explanation:

Let us assume that x and y are the two numbers.

So, given that (x + y)² = 144

⇒ x² + 2xy + y² = 144 ........ (1)

⇒ x + y = ± 12 ......... (2)

Again, x² + y² = 180 ........... (3)

Now, from equations (1) and (3) we can write 2xy + 180 = 144

⇒ 2xy = - 36

⇒ xy = - 18 ........ (4)

Now, for x + y = 12

⇒ $x - (18)/(x) = 12$

⇒ x² - 18 = 12x

⇒ x² - 12x - 18 = 0

Using the quadratic formula

$x = \frac{12 \pm \sqrt{(-12)^(2) - 4(1)(-18) } }{2}$

⇒ $x = (12 \pm 14.7)/(2) = 13.35, 1.35$

Now, for x = 13.35, from equation (4) we get, y = - 1.35

And for x = 1.35, from equation (4) we get, y = - 13.35

Now, for x + y = - 12

⇒ x² + 12x - 18 = 0

Using the quadratic formula,

$x = \frac{- 12 \pm \sqrt{12^(2) - 4(1)(-18)}}{2}$

⇒ $x = (- 12 \pm 14.7)/(2) = 1.34, -13.35$

Now, for x = - 13.35, from equation (4) we get, y = 1.35

And for x = 1.35, from equation (4) we get, y = - 13.35

Therefore, x = 13.35, y = - 1.35

or, x = 1.35, y = - 13.35

or, x = - 13.35, y = 1.35 (Answer)

What rights are specifically protected under the ninth amendment

Answers

The Ninth Amendment (Amendment IX) to the United States Constitution addresses rights, retained by the people, that are not specifically enumerated in the Constitution. It is part of the Bill of Rights.

protects peoples rights

at a harvest 16 ears of corn have been picked for every 18 peppers if 9 peppers have been picked how many ears of corn have been picked

Answers

The answer would be eight peppers because there are eighteen peppers for every sixteen ears of corn so half of eighteen would be nine therefore eight ears of corn have been picked from nine peppers because nine is hald of eighteen and eight is half of sixteen

Which ordered pair is the solution to the system of equations?2x+y=-8
x-y=-4
A.
(−3, −2)

B.
(−1, 3)

C.
(1, 5)

D.
(−4, 0)

Answers

2x+y=-8
x-y=-4
+------------
3x= -12
x= -4

x-y= -4
-4 -y= -4
y=0

This questin answer is D(-4,0)

Hope this helps :))

$2x+y=-8\nx-y=-4\n------\n3x=-12\nx=-4\n\n-4-y=-4\n-y=0\ny=0\n\n(-4,0) \Rightarrow D$

Marti's cat weight 12.37 pounds what is the word form for the value of the 7 in 12 37

Answers

Th word form for the value of the 7 in 12.37 is the hundreths place

The value of the 7 in 12.37 is Hundreths place. That is the word form of the value of 7 in 12.37

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