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4 years ago

Which expression has a value of 24 when x=4 and y=2?

Mathematics

2 answers:

Taya2010 [7]4 years ago

7 0

8x- 4y = 24 is the answer

wolverine [178]4 years ago

4 0

C) will have value of 24

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Write the expressions for the following situations. The difference of 15 and 4 times a number I want to buy 4 tickets to go to D

ElenaW [278]

Answer:

The difference of 15 and 4 times a number

4a - 15

I want to buy 4 tickets to go to Disney World. They are currently on sale for with a 12% discount.

100% representate the original cost of tikets,

100% = 100/100 = 1

12% discont:

12% = 12/100 = 0.12

1 - 0.12 = 0.88

0.88

then the expressión is:

4*0,88d

=3.52 d

d = original cost of each ticket

5 0

3 years ago

Which is the solution to the equation 3.5(2h+4.5)=57.75? round to the nearest tenth if necessary.

Rufina [12.5K]

Answer:

you would distribute 3.5 to 2 and 4.5 and get 7h+15.75=57.75 subtract the 15.75 and get 7h= 42 which makes h=6

6 0

3 years ago

Read 2 more answers

Please HELP I will make you brainlist !!! Need surface area

skelet666 [1.2K]

Answer:

22969.39 yd^2

Step-by-step explanation:

Alright to start, lets do the easier part of it, the sides of it. Since it is an octagonal prism, there are 8 rectangular sides to it. Each of these sides can be found with L*W, so use the given length of 15 and width of 6 to do this.

15 * 6 = 90

Since there's 8 of these:

90 * 8 = 720

Now, with the tricky part with the bases of the octagonal prism. Let's find the perimeter of the octagon, so use the top width of each of the rectangles.

6 * 8 = 48 = Perimeter

Now, here's the magic equation to avoid making this more complicated:

2(1+√2)p^2

Then plug in p

2(1+√2)48^2

(2+2√2) * 2304

(2+2.8284)*2304

4.8284*2304

11124.69...

But there's two bases so: 22249.39

Lastly, add this to the 720 from the rectangular prisms.

22249.39+720 = 22969.39

Hope that helps.

3 0

3 years ago

Find an equation for the line that passes through the points(-4,-3)and(6,1).

jeyben [28]

Answer:

$2x - 5y = 7\:\:or\:\:y = \frac{2}{5}x - 1\frac{2}{5}$

Step-by-step explanation:

First, find the rate of change [slope]:

$\frac{-y_1 + y_2}{-x_1 + x_2} = m$

$\frac{3 + 1}{4 + 6} = \frac{4}{10} = \frac{2}{5}$

Then plug these coordinates into the Slope-Intercept Formula instead of the Point-Slope Formula because you get it done much swiftly. It does not matter which ordered pair you choose:

1 = ⅖[6] + b

2⅖

−1⅖ = b

y = ⅖x - 1⅖ >> Line in Slope-Intercept Form

If you need it written in Standard Form:

y = ⅖x - 1⅖

-⅖x -⅖x

_________

−⅖x + y = −1⅖ [We do not want fractions in our standard equation, so multiply by the denominator to get rid of it.]

−5[−⅖x + y = −1⅖]

2x - 5y = 7 >> Line in Standard Form

_______________________________________________

−3 = ⅖[−4] + b

−1⅗

−1⅖ = b

y = ⅖x - 1⅖ >> Line in Slope-Intercept Form

If you need it written in Standard Form:

y = ⅖x - 1⅖

-⅖x -⅖x

_________

−⅖x + y = −1⅖ [We do not want fractions in our standard equation, so multiply by the denominator to get rid of it.]

−5[−⅖x + y = −1⅖]

2x - 5y = 7 >> Line in Standard Form

** You see? I told you it did not matter which ordered pair you choose because you will ALWAYS get the exact same result.

I am joyous to assist you anytime.

5 0

3 years ago

Graph any line that is parallel to the equation y=3/2x-1 below PLEASE I GIVE 20 POINTS!!

Lilit [14]

Y=3/2x-1

Is the a possibility use desmos for these type of questions

4 0

3 years ago