HELPPP PLEASEEE!!!???

The table shows a relationship between values of x and y.

Which of the following equations describes the relationship for the values in the table?

A.
y = 2x^2 – 1

B.
y = x^2 + 3

C.
y = 2x^2 + 1

D.
y = 10x – 3

Answer:

9

Step-by-step explanation:

10% of 240= 24

216/24= 9

Given:

The system of equations is

[tex]y=2x-5[/tex]

[tex]2y-4x=?[/tex]

To find:

The missing value for which the given system of equations have infinitely many solutions.

Solution:

Let the missing value be k.

We have,

[tex]y=2x-5[/tex]

[tex]2y-4x=k[/tex]

Taking all the terms on the left side, the given equations can be rewritten as

[tex]-2x+y+5=0[/tex]

[tex]-4x+2y-k=0[/tex]

The system of equations [tex]a_1x+b_1y+c_1=0[/tex] and [tex]a_2x+b_2y+c_2=0[/tex] have infinitely many solutions if

[tex]\dfrac{a_1}{a_2}=\dfrac{b_1}{b_2}=\dfrac{c_1}{c_2}[/tex]

We have,

[tex]a_1=-2,b_1=1,c_1=5[/tex]

[tex]a_2=-4,b_2=2,c_2=-k[/tex]

Now,

[tex]\dfrac{-2}{-4}=\dfrac{1}{2}=\dfrac{5}{-k}[/tex]

[tex]\dfrac{1}{2}=\dfrac{1}{2}=\dfrac{5}{-k}[/tex]

[tex]\dfrac{1}{2}=\dfrac{5}{-k}[/tex]

On cross multiplication, we get

[tex]-k=10[/tex]

[tex]k=-10[/tex]

Therefore, the missing value is -10.

Answer:

y=2/3x-4/3

Step-by-step explanation:

1- reword the statement to equal y

3y=-4+2x

2-Bring the 3 over

y=2/3x-4/3

answer:

63 inches squared

step-by-step explanation:

1 ft = 12 inches (conversion)

12 X 6 = 72 in^2 (area of the whole rectangle)

3 X 3 = 9 in^2 (area of the not shaded portion)

72 - 9 = 63

- - > 63 inches squared

Answer:

download photo math you can take pictures of math problems and will solve them.

Answer:

B!

Step-by-step explanation:

you have to simply the 2/6 to 1/3

Answer:

7/12

Step-by-step explanation

Write all numerators above the LCD (least common denominator) 12

Answer: 904.78km^3

Step-by-step explanation:

The formula for finding the volume of a sphere is 4/3πr^3 and the radius (r) is 6km (the radius is half of the diameter) so when you put that in, you get 904.78 and your answer with volume is always cubed.

Answer:

25

Step-by-step explanation:

-60+85=25

the answer is 25

Answer:

x = -8

Step-by-step explanation:

Answer:

Solution given;

2-(3x+5)=5-2x

2-3x-5=5-2x

-3-5=3x-2x

x=-8 is your answer.

Answer: 3/5 i think ;-; if its not well then uhhhhh sorry?

Step-by-step explanation:

Answer:

10x + 10y + 7

Step-by-step explanation:

You will have to group like terms, terms that have either the same degree or variable. In this case, we have x, y, and the constant.

9x + x = 10x

2y + 8y = 10y

4 + 3 = 7

Hope this helped!

Answer:

Because square roots aren't really negative. if you multiplied square roots by themselves they can equal positive and negative

Step-by-step explanation:

Answer:

Around 72.8 inches

Step-by-step explanation:

We are given the infomation that Chris is 185 centimeters tall.

There are 2.54 centimeters in an inch.

185/2.54 = 72.8346 ≈ 72.8

Chris should be around 72.8 inches.

Hope this helps.

Chris should be around 72.8 inches tall.

Here, we have,

given that,

Scott is 72 inches tall and Chris is 185 centimeters tall

We are given the information that Chris is 185 centimeters tall.

now, we know that,

There are 2.54 centimeters in an inch.

Since 1 inch = 2.54 centimeters

all we need to do is to divide 185 by 2.54

i.e. 185/2.54 = 72.8346 ≈ 72.8

The answer will be 72.8.

Chris should be around 72.8 inches.

Learn more about the unit conversion here:

brainly.com/question/14350438

#SPJ6

Answer:

x+x+x=1+1+1

Step-by-step explanation:

3x=1x+1x+1x

A possible problem for the multiplication 4 x 2/3 is In a tourist lake there are 4 boats to go on the lake each with 3 seats. Sunday, all boats are busy but only with 2 passengers.

A mathematical problem is a series of data related to a scenario or event that poses a problem in which we must use mathematical operations and procedures to solve it.

According to the above, an example of a mathematical problem is the situation in which the 4 boats on a tourist lake are occupied but only 2 of the 3 chairs available on each boat are being used.

Learn more about mathematical problem in: https://brainly.com/question/1387129

Answer:

33/20

Step-by-step explanation

$0.2  + $x = %1.36

20 IB + 80 IB = 100 IB

Equation: 0.2*20+x*80=1.36*100

there fore the answer is 33/20

The cost of 1 lb of sugar candies is $1.65.

Given to us

Total cost of candy mix = weight of candy mix [tex]\times[/tex]  Cost of candy mix

                                       [tex]= 100\ lb\times \$1.36[/tex]

Total cost of Jelly beans = weight of Jelly beans [tex]\times[/tex]  Cost of Jelly beans

                                       [tex]= 20\ lb\times \$0.20[/tex]

weight of Sugar candies = weight of candy mix - weight of jelly bean

                                         [tex]=100\ lb - 20\ lb\\= 80\ lb[/tex]

Total cost of candy mix = Total cost of jelly beans + total cost of sugar candies

[tex]100\ lb \times \$1.36 = (20\ lb \times \$0.20) + (80\ lb \times x)\\136 = 4 + (80x)\\136-4 = 80x\\132 = 80x\\x = \dfrac{132}{80}\\x =1.65[/tex]

Hence, the cost of 1 lb of sugar candies is $1.65.

Learn more about cost and weight:

https://brainly.com/question/13129990

Answer:

what are your choices for your answers

Step-by-step explanation:

Answer:

3x+6

Step-by-step explanation:

You have to do the rainbow sooo,

3 ⋅ x = 3x

3 ⋅ 2= 6

Put them together equals 3x+6

Hoped I helped! :)

Answer: ( . is another way to write a multiplication sign.

X = the amount of pounds each rice bag has.)

7 + 4 . X = 64

Not sure if this is needed but X = 14.25 so if there is a follow up question that asks how many pounds are in each bag of rice the answer would be 14.25.

If you can not use X in the equation another way of writing it would be 7 + 4 . 14.25 = 64

I am not sure which equation your teacher would want because that all depends on the teacher and if there are any further details on the question. So if somewhere on the question it said you have to use a variable you would use the equation with the variable.

Step-by-step explanation:

1.  The question claims that the total of all of the pounds of rice and bean bas equals a total of 64 so that would be the answer to the equation.

2. You now need to make an equation that represents the situation by setting up your equation like this: 7 + 4 . X = 64

How to find X and have an equation with an already solved X.

1  We know that in total each bag has 64 pounds so that means we have to subtract 7 from 64. The difference is 57.

2. We now need to divide 57 by 4 because the rest of the bags have an identical amount of pounds so your answer should be 14.25.

3. Your equation should be set up like this: 7 + 4 . 14.25 = 64

Answer:

792cm3

Step-by-step explanation:

Answer:

length

l = 8 cm

width

w = 11 cm

height

h = 9 cm

diagonal

d = 16.3095064 cm

total surface area

Stot = 518 cm2

lateral surface area

Slat = 342 cm2

top surface area

Stop = 88 cm2

bottom surface area

Sbot = 88 cm2

volume

V = 792 cm3

8 x 9 x 11 is 792, 792 x 1/2 is 396, which should be the correct answer.

Answer:

(-2,3)

Step-by-step explanation:

Answer:

Q. 2)Perimeter =2(l+b)

So,

2(8x-8 +8x)=80cm(Given in Question)

= 2*16x-8=80cm

16x- 8= 80 divided by 2,

16x=40+8=48

x=48 divided by 16

X=3

Q.1) Perimeter=2(l+b)

2(2x+8 +4x)=76cm(Given in Question)

2* 6x +8=76

6x+8= 76 divided by 2, 38

6x= 38-8, 30

x= 30 divided by 6 = 5

X=5

THANK ME LATER

Answer:

3(7-2y)=9

Because there is no symbol between the 3 and the "(" we can tell that it wants you to multiply.

With the distributive property you must distribute the 3 within (7-2y)

To that you would multiply 7 by 3, and multiply -2y by 3. This would get you:

21-6y=9

To get y you must isolate it, the first step to isolate it is remove the number with no "y" next to it. Which is "21" Also for further problems your way, You should add/subtract/divide/multiple the number that does not have the same or even a variable as the variable you are trying to find to the other side.

In this case it would be subtracting 21 from the left side and subtracting it to the right side which would give us: 6y=-12

(Because there was already a number with no variable: "9" you will subtract 21 from 9 which is why you get -12).

Next you will further isolate the y by removing the -6. "-6y" means -6 multiplied by y. So you will divide -6 from the left side AND the right side.

-6y ÷ -6 = y ; -12 ÷ -6 = 2

y=2

More tips: When you are moving something to the other side always do the opposite to remove it from one side and move it to the other. Example: -12 + y = 5

You want to move the -12 to the right side. So you need to remove "-12" from the left side by ADDING 12 because -12 + 12 = 0.

Now you simply add it to the right.

Another example: 4y = 8

Because 4y is multiplication (4 times y) you must divide it from each side to isolate the y! : y=2

If you divide a number from the left side, you must also divide it from the right side. If you add a number on the left side, you must also add it on the right side. Same goes for subtraction and multiplication. Think like that!

Step-by-step explanation:

So ya

Answer:

y=2

Step-by-step explanation:

3(7 – 2y) = 9

/3              /3

(7-2y)=3

-7       -7

-2y=-4

/-2  /-2

y=2

Answer:

5. dots A = 2

dots B = 4

6. linear

Problem 5

Answers:

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

Explanation:

In step 1, there are 2 dots which corresponds to dots A.

In step 2, there are 4 dots which corresponds to dots B.

=========================================================

Problem 6

Answer: A) Linear

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

Explanation:

The sequence of dots for each of the steps is: {0, 2, 4, 6, ...}

Each time we're increasing by 2 dots. This suggests a linear pattern

The linear equation that models this is y = 2x. The slope is 2 and the y intercept is 0. The slope of 2 tells us how much the dots grow each time, while the y intercept tells us our starting point.

Answer:fisrt one is y=1/2x

second one is y=x+11

third one is y= x^3

fourth on is y= ^3 check mark x

Step-by-step explanation:

Answer:

its 15 to the square root of 2

Step-by-step explanation:

Answer:

68.9°

Step-by-step explanation:

[tex]cos^{-1}[/tex](0.36) ≈ 68.90