Mathematics Middle School

If 2x(x-y)=54 and x=9, then y=

A. 6
B. 3
C. 2
D. 1

Answers

Answer 1

Answer:

A. 6

Step-by-step explanation:

[tex]2x(x - y) = 54 \\ 2(9)(9 - y) = 54 \\ 18(9 - y) = 54 \\ 9 - y = \frac{54}{18} \\ 9 - y = 3 \\ y = 9 - 3 \\ y = 6[/tex]

Answer 2
Im guessing it’s A but I’m not really sure hopefully it’s right

Related Questions

can you Help me please!!!

Answers

Answer:

the answer is 15

hoped it helped

15 is the answer to the question

Bren has a deck of cards. As shown below, each card is labeled with a rule describing a pattern in a sequence.select a card and decide on a starting number. Use the rule to write the first five terms in your sequence. Add 1.6 Add 0.33 add 6.5 Add 0.25 Add 1.15

Answers

Answer is 1 jajjaakaoalawlwlkwjwbwbwwbwbwbww

IN YOUR OWN WORDS How can you use function notation to represent a function? How are standard notation and function notation similar?

Standard Notation:
y = 2x + 5

Function Notation:
f ( x ) = 2x + 5

Please help, due tomorrow

Answers

Answer:

Step-by-step explanation:

N^2-10n+9

The function notation to represent a function is f(x) and standard notation and function notation are similar because  y = f ( x).

What is function notation?

Function notation is a way in which a function can be represented using symbols and signs. Function notation is a simpler method of describing a function without a lengthy written explanation. The most frequently used function notation is f(x) which is read as “f” of “x”. In this case, the letter x, placed within the parentheses and the entire symbol f(x), stand for the domain set and range set respectively.

What is domain?

The domain of a function is the set of all possible inputs for the function. For example, the domain of f(x)=x² is all real numbers, and the domain of g(x)=1/x is all real numbers except for x=0.

According to the question

Standard Notation:

y = 2x + 5

Function Notation:

f ( x ) = 2x + 5

Function notation can be used to represent the function as it represent function using symbols and signs .

An equation involving x and y, which is also a function, can be written in the form y = “some expression involving x”;

that is, y = f ( x).

This last expression is read as “ y equals f of x” and means that y is a function of x.

Standard notation and function notation  are similar because

An equation involving x and y, which is also a function, can be written in the form y = “some expression involving x”;

that is, y = f ( x).

Hence, function notation to represent a function is f(x) and standard notation and function notation are similar because  y = f ( x).

To know more about Function notation and domain here:

https://brainly.com/question/12918381

#SPJ2

determine the slope ....................

Answers

Answer:

2

Step-by-step explanation:

The slope is 2, because y=Mx+b

evaluate if a= -21 a/3+a=

Answers

the answer is -28
(sorry if i get this wrong)
-28
-21 divided by 3= -7
-7+-21=-28

PLEASE HELP WILL GIVE BRAINLIEST
Use the interactive tool to graph the line given the following information:

coordinates (1,–3)

slope of –2

Based on your investigation, what is the value of b for the point (0,b)?

Answers

Answer: [tex]y = -2x - 1[/tex], [tex]b = -1[/tex]

Step-by-step explanation:

[tex]y = mx + b[/tex] [tex]-3 = 1(-2) + b[/tex] [tex]-3 = -2 + b[/tex] [tex]-1 = b[/tex]

That last one is 1 over three

Answers

Answer:

1/2

Step-by-step explanation:

A bake sale committee wants to raise $198 for a donation to a local charity. They set aside $12 of their profit at the end of each day. How many days will it take them to raise enough money for the whole donation?

Answers

Answer:

It will take about 17 days in order to obtain the money needed.

Step-by-step explanation:

I took 198 and then -12 each time and counted along until I found my answer.

Answer:

17

Step-by-step explanation:

First you do 198 divided by 12 and then you get the remainder 6. Since the put 12 dollars every day you have to add another day so you get the total amount of days.

what is 0.35 as a simplified fraction and why??

Answers

Answer:

7/20

Step-by-step explanation:

Answer:

0.35 7/20 35%

Step-by-step explanation:

A boa constrictor is 18 inches long at birth and grows 8 inches per year. Write an equation in slope intercept form that represents the length y(in feet) of a boa constrictor that is x years old

Answers

First, change the known values into feet:  18 inches = 1.5 feet     8 inches per year = 2/3 foot per year

Answer: y  = (2/3)x + 1.

VERY IMPORTANT NEED HELP ASAP

Is cereal... soup?

Answers

Answer: NO

Step-by-step explanation:

Item 2
Use the expression 15 dived by 2/9 to answer the questions to the right.

Question 1
POSSIBLE POINTS: 5
Select all the statements that show correct reasoning for finding 15÷29.

A Multiply 15 by 2, then divide by 9Multiply 15 by 2, then divide by 9

B Multiply 15 by 9, then divide by 2Multiply 15 by 9, then divide by 2

C Multiply 15 by 19, then multiply by 2Multiply 15 by 1 ninth, then multiply by 2

D Multiply 15 by 9, then multiply by 12Multiply 15 by 9, then multiply by 1 half

Question 2
POSSIBLE POINTS: 5
Determine the quotient of 15÷29 and explain how determined the answer.

Answers

i think Question 1 i think its A

i think Question 2 : 108112

I would say the answer is a

Hope you can help me with this problem

Answers

Answer:

the answer is A

Step-by-step explanation:

casue i said so

What she said

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Y’all I’m just jamming to music what music you like

I’m listening to streets by doja cat slowed and reverbed lol

The radius of a circle is 2.6 in. Find the circumference {to the nearest tenth}to the nearest tenth.

Answers

Answer:

The answer would be 16 I think.     16

Answer:

16.3 in

Step-by-step explanation:

The equation for circumference of a circle is 2[tex]\pi \\[/tex]r

r is the radius

Plug the given value for radius (in this problem that is 2.6) into the equation and you get the circumference of the circle.

2[tex]\pi \\[/tex](2.6)=16.3

The length of a rectangle is 3 meters less than twice its width. Equation: 2w - 3 = l. The length of the rectangle is 11 meters. What is the width of the rectangle?

Answers

Answer: 7

Step-by-step explanation:

L = 2W - 3

b) L = 11,

11 = 2W - 3

11 + 3 = 2W

14 = 2W

7 = W

I’m pretty sure the answer is 7 :) hope it’s right, and I hope you’ll have a nice day

how do i solve 28=2x

Answers

Divide both sides by 2
14 = x
Solution: x = 14

HELP NEED ANSWER FOR HOMEWORK

Answers

Answer:

596.032

Step-by-step explanation:

The answer is typed wrong.

Using a calculator: 6.4 x 6.7 x 13.9 = 596.032

Tell your teacher that answer is not there. It's typed wrong.

Hoped this helped! :)

please need help asap
will give brainly

Answers

Answer:

the first or third one

Step-by-step explanation:

hope this helps

MATH-IXL , Look at the picture below to answer CORRECTLY. Only give me one right answer So i can mark you as Brainliest!

Answers

Function A is less than. Please give me brainliest

Giving braiinliest to best answer anything helps im really tired

Answers

60^2 + 100^2 = x ^2
3600 + 10000 = x^2
x= 116.61

plllllzzzzzzz help! :( ill make u brainlist ):

Answers

Answer:

a)50cm^2

b)52cm^2

Step-by-step explanation:

Please give brainliest :)

A)
a•b=20
a=b
a=b=square root from 20

c•d=30
c=d
c=d=square root from 30

a^2+c^2=d^2
20+30=d^2
50=d^2
d=square root from 50

Area=square root from 50•square root from 50=50

B)
a•b=16
a=b
a=b=square root from 16=4

c•d=36
c=d
c=d=square root from 36=6

a^2+c^2=d^2
4^2+6^2=d^2
16+36=d^2
d=square root from 52

Area=square root from 52•square root from 52=52

which numbers are irrational

select all that apply.​

Answers

Answer:

A and E

Step-by-step explanation:

Look at the chart below

A AND E
ur welcomee

Driving 65 mph, it takes Alicia 3 hours to reach the airport to go on a vacation. It then takes her 4 hours to get to her destination with the jet traveling at a speed of 450 mph. How many miles does Alicia travel to get to her destination?

Answers

Answer: i am the first one to answer please mark brainliest

65x3 + 450x4=

Step-by-step explanation:

195+1800=1995

Answer:

1,955 miles

Step-by-step explanation:

For this problem all we have to do is, assuming they were constantly going that speed and never stopped, multiply the items and the mph.

SO, to the airport is 65mph*3 hours, which would give 195 miles.

Then, To their destination, 450mph * 4hours = 1,800 miles

Now all that is left to do is add

195 + 1,800 = 1,995

1,995 miles

Two sides of a triangle measure 5 cm and 9 cm. It has an angle that measures 128°. Which type of triangle could it be? Select all that apply.


A.

acute isoceles


B.

obtuse scalene


C.

obtuse equilateral


D.

obtuse isosceles


E.

acute scalene


F.

obtuse right

Answers

Answer:

Obtuse Scalene Triangle

Step-by-step explanation: the angle measurement is greater than 90

Obtuse scalene triangle

I really need help on this please answer correctly,,, and who ever gives a good answer i will give brainliest- The math is Relations and Functions.

Answers

Answer:

the 1st picture is a function

the 2nd is not a function

the 3rd isnt a function

hope I helped :)

help please I need this turned in quick

Answers

From home to the video store to the grocery store, grabs fast snacks and back to home would be:

B. 18

Hope this helped.

Answer:

He walked 18 units from home, to the video store, to the grocery store, to fast snacks then back home.

Jackson ran 2 12 miles around the track. Each lap around the track is 14 of a mile. How many laps did Jackson run?

Answers

Answer:

212/14=15

Step-by-step explanation:

Rectangle ABCD was translated 4 units to the left and 1 unit up. Which rule describes the translation that was applied to the rectangle ABCD to create rectangle A'B'C'D'?



A - (x, y) (-4x, 1y)
B - (x, y) (1x, -4y)
C - (x, y) ( x+1, y - 4)
D - (x, y) ( x - 4, y+1)

Answers

C the is the right answer because math

PLEASE HELP ME I REALLY NEED IT!

Answers

It’s A hope it’s right bro
It’s A, hope this helps

Choose all of the numbers that make the statement true.

Answers

Answer:

The answer is C and D✔✔

Step-by-step explanation:

the answer is c an d
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