Mathematics Middle School

What is the value of the expression x−2y+√4z when x = 12 y = -3 and z = 4

Answers

Answer 1

Given expression,

=> x - 2y + √4z

when x = 12 , y = -3 and z = 4 ,

=> 12 - 2(-3) + √4*4

=> 12 +6 + 4

=> 18 + 4

=> 22

Answer 2

Answer: 22

Step-by-step explanation: first write out the equation then add in the numbers in place of the variables

Ex: 12-2(-3)+√4(4)

Related Questions

evaluate m+n/6 , when m= -3 and n=18

Answers

Answer:0

Step-by-step explanation:

-3 + 18 divided by 6

3-(-3)=0

Determine the Prime factorization of each number.
36 b. 120 c. 258 d. 63

Answers

Answer:

36

Step-by-step explanation:

This is the backside from the other photo I need extra help with this

Answers

Answer:

No LED lights pls, it makes it harder to view and consequently harder to answer.

can you turn off the leds it makes harder to read

will giver brainliest to the person with the most detailed answer. That means tell me how you got ur answer. And the person who answers with the most clear explanation as well. Good luck!! This is due in 8 minutes as well. And pls number ur answers in order so it is clear!!

Answers

since they are all in the same line you only need to use 2 of the points I'm using (1,-1) and (2,1) next you do (x1,y1) and (x2, y2) which would be (1,2) and (-1, 1) then do y2-y1 / x2-x1 which would be 1/2

Simplify 753.06 ÷ 2.2
A. 34.23

B. 3.423

C. 0.0029

D. 342.3

Answers

Answer:

D

Step-by-step explanation:

D. 342.3

I just did this question

Which ordered pair would form a proportional relationship with the point graphed below?

Answers

Answer:

-10, 20 because -20, 40 divided by 2 = -10, 20

The ordered pair that would form a proportional relationship with the point (-20, 40) is given as follows:

(15, -30).

What is a proportional relationship?

A proportional relationship is a relationship in which a constant ratio between the output variable and the input variable exists.

The equation that defines the proportional relationship is a linear function with slope k and intercept zero presented as follows:

y = kx.

The slope k is the constant of proportionality, representing the increase or decrease in the output variable y when the constant variable x is increased by one.

The constant for this problem is given as follows:

k = 40/-20

k = -2.

Hence the equation is:

y = -2x.

When x = 15, the numeric value of the equation is given as follows:

y = -2(15)

y = -30.

Hence the point is:

(15, -30).

A similar problem, also featuring proportional relationships, is presented at https://brainly.com/question/7723640

#SPJ1

what is 16,524 rounded down to the preceding thousand

Answers

Rounded DOWN to the nearest thousand is 16000

The cost of having photos taken includes a sitting fee and $12 for each portrait. The cost of 3, 6, and 9 photos respectively is $51, $87, and $123. What is the sitting fee? Use units in your answer and round answer to the hundredths place, for example $2.35
plz help

Answers

Answer:

The sitting fee is 15 dollars

Step-by-step explanation:

1 - 12 x 3 = 36

2 - 51 - 36 = 15

3 - 12 x 6 = 72

4 - 87 - 72 = 15

Answer:

$15.00

Step-by-step explanation:

cost of photos = sitting fee + $12 per photo

Let the number of photos = x

Let the sitting fee = s

cost of photos = s + 12x

cost of 3 photos = $51

s + 12(3) = 51

s + 36 = 51

s = 15

Answer: The sitting fee is $15.00

It would be the first one right...?

Answers

Answer:

I say the second one but I could be wrong..

The answer is the second one

I NEED HELP TMR IS THE LAST DAY TO TURN THIS IN

Answers

Answer:

9. the yellow bag

Step-by-step explanation:

Green bag=2.59/7=0.37Blue bag=4.56/12=0.38Yellow bag=6.30/18=0.35

0.35<0.37<0.38

I am only gonna help with this one cus I also have homework~sorry!!

For #9 the 18 ounce packet has the lowest cost per ounce
I know this because for the 7 ounce packet it is $0.37 per ounce, for the 12 ounce packet it is $0.38 per ounce and for the 18 ounce packet it is $0.35 ounce a packet. So the lowest is the 18 ounce packet.
I hope this helped.

Find the greatest number such that x172y is divisible by 45

Answers

Answer:

45

Step-by-step explanation:

Its 46 dusb dijdudusbs.

Click to see the pic! PLEASE NO LINKS, I CANT EVEN OPEN THEM FOR SOME REASON BUT I NEED AN ANSWER

Answers

Answer 75%=0.75

7%= 7/100

75/10=other

3/4=0.75%

0.07=7/100

7.5=other

Step-by-step explanation: hope that helps :))

0.75~ 75%. 3/4
7/100~. 7%. 0.07
other~. 7.5%. 75/10

Solve for x
3/5 (x − 7/10)= −3 1/4
Enter your answer as a mixed number in simplest form.

Answers

Answer:

x = 11(13/14)

Step-by-step explanation:

3/5(x – 7/10) = -31/4

open the bracket:

3/5 * x – 7/10 = -31/4

3/5 * –7x/10 = -31/4

3/5 + 31/4 = 7x/10

(12+155)/20 = 7x/10

167/20 = 7x/10

cross multiply:

140x = 1670

x =1670/140

x = 11(130/140)

x = 11(13/14)

The value of x is 1/5.

What is Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides. LHS = RHS is a common mathematical formula.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given:

3/5 (x − 7/10)= −3 1/4

Now, Solving for x

3/5 ( x- 7/10 )= 13/4

x- 7/10 = -13/4 x 5/3

x- 7/10 = -65 /12

x= -65/12 + 7/10

x= 24/ 120

x= 1/5

hence, the value of x is 1/5.

Learn more about equation here:

https://brainly.com/question/29657983

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Lilly wants to plant grass around their rectangular garden they have 28 meters of grass to go around the garden and they need to use it all pick two different dimensions in which they can do to construct the garden here are the choices you can pick 9x10 2x12 10x11 dimension 2 10x4 13x7 51x14 what garden size should Lilly choose if they want to grow the greatest amount of Brussel sprouts dimension 1 or dimension 2

Answers

Answer:

the amount is24

Step-by-step explanation:

The amount is 24.!.!.!.!.

1
What is the solution to the system of equations? Use any method you prefer to solve.

y=5/4x-2

y= -1/4x+16

a. (12, 13)

b. (-2, 16)

c. (4, 4)

d. (5, -1)

NO LINKS
​

Answers

5/4x-2=-1/4x+16 5/4x+1/4x=18 6/4x=18 x=12 y=13 choose a. (12,13)
B is the answer to this

Solve for b.
3 < b/-4 + 4

61 points

Answers

Answer: b < 4

Step-by-step explanation:

[tex]\\ \sf\longmapsto 3<b/-4+4[/tex]

[tex]\\ \sf\longmapsto 3<b-16/-4[/tex]

[tex]\\ \sf\longmapsto -12<b-16[/tex]

[tex]\\ \sf\longmapsto b>4[/tex]

Done

Help please giving brainlyest

Answers

Answer:

fewer than 14.05

Step-by-step explanation:

basically all I did was subtract the 88.6 by 2 until I got to 60.5 the answer is 13 minutes so fewer than 14 minutes.

Answer:

fewer than 14.05

Step-by-step explanation:

Construct a scatterplot and identify the mathematical model that best fits the data. Assume that the model is to be used only for the scope of the given data and consider only linear, quadratic, logarithmic, exponential, and power models. Use a calculator or computer to obtain the regression equation of the model that best fits the data. You may need to fit several models and compare the values of R2.


y = –477.38 + 237.66 ln x


y = –109.41 + 14.59x


y = 11.46 e1.107x


y = 0.45x1.903

Answers

Answer:

I don't think middle schooler learn this.

Step-by-step explanation:

#3 is what I need help on

Answers

Answer: 11.05

Step-by-step explanation:

Divide 5.20 by 8 to find the price of each bag (which is .65 cents.) Multiple .65 by 20 (13). 15% of 13 is 1.95. 13 - 1.95 is 11.05

PS: 1.95 is the discount. Hope this helps. Have a good day.

answer is 11.05 and the 1.95 discount

find the fraction form
percents-12 1/2,25,37 1/2,50,62 1/2,75,87 1/2

Answers

Answer:

1/8

Step-by-step explanation:

The answer is 1/8 your welcome

A beach diver descends 110 feet in 10 minutes at a constant rate. Find the rate of the beach diver’s change in position per minute?

Answers

Answer:

11

Step-by-step explanation:

We are dividing.

110 / 10 = 11

the answer is 11 bc were dividing.

This composite figure is made of three identical cylinders that are connected together

Radius:3 Height:8

Answers

The surface are of a cylinder is

SA = 2πr2 + 2πrh

where:
r = radius
h = height

This formula comes from adding the areas of the surfaces of the cylinder. It has two flat circular faces and a rounded face.

If we cut the cylinder from the circular face symmetrically, the surface area for one piece will be

SA = 2[(πr2)/2] + (2πr/2)h + 2rh

We will have 2-half flat circular faces, a flat rectangular surface, and half of the rounded surface.

Simplify the SA formula.

SA = πr2 + πrh + 2rh
SA = r(πr + πh + 2h)

Substitute the values into this formula.

SA = 3(3π + 8π + (2*8))
SA = 3(11π + 16)
SA = 33π + 48
SA = 151.67 cm2

Since we have 2 pieces, multiply this result by 2.

2(151.67 cm2) = 303.34 cm2.

The total area is 303.34 cm2.

Ill give brainless if you get right

Answers

2.4x+9.6x=180
12x=180
x=15
9x=135°
0.1x= 1.5°
0.6x= 9°
9x+0.6x=9.6x
135°+9°=144°

The Wing Station wants the average price of the lunch meal deals to be $8.

What does the price of the chicken wings need to be for this to happen?

Answers

Step-by-step explanation:

To calculate the mean, we do the the total divided by the number of values. With 6 values, for the average to be 8, the total needs to be 48. The current total is 41, so Chicken Wings needs to be 7, because 48-41=7

The chicken wings need to be 7 dollars

help plesssssssssssssssssssssssssssssss

Answers

Answer:

(d) 12

Step-by-step explanation:

Answer:

the answer is D

Step-by-step explanation:

45,747 divided by 9=

Answers

The Answer is 5,083.

Hope this helps!

Answer:

5083

Step-by-step explanation:

Can somebody shade this for me? Thanks so much!

Create and shade a number line that shows the following inequality. Make sure to label at least 3 numbers on the number line, put an open circle, and shade to the left or to the right.

x > 5

Answers

Answer:

Hope below ss helps

Answer:

See attached

Step-by-step explanation:

Shaded this for you

x > 5

Open dot at point 5 on x-axis, shaded region is to the right from the point 5

22,540 divided by 8= tysm guys

Answers

22540/8=2817.5
I just put it in a calculator lol.
22,540 divided by 8 is 2817.5

what is 78x85x99x1 i need helppp

Answers

Answer:

656370

Step-by-step explanation:

pa brainliest

Answer:

65630

Step-by-step explanation:

calculator

pls help I have three more questions after this that are impossible

Answers

the basic formula for volume is length times width times height. you can use this to answer question C.
i do not know the length width or height in your problem.
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