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PIT_PIT [208]
3 years ago
9

Write a numerical expression for each verbal phrase.

Mathematics
2 answers:
Kaylis [27]3 years ago
4 0

\huge\boxed{12+20}

You have 12 of one type of coin and 20 of another type of coin.

To find the total number of coins, you need to add the two values together.

Scilla [17]3 years ago
3 0

Answer:

The correct option is C) 12 + 20.

Step-by-step explanation:

Consider the provided phrase.

The total number of coins Kyle has if he has 12 quarters and 20 dimes

Use "+" sign for and .

He has 12 quarters and 20 dimes can be written as:

12+20

The total number of coins are the sum of 2 quarters and 20 dimes

Thus, the required expression is

12+20

Hence, the correct option is C) 12 + 20.

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Answer:

It must travel through a medium

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Given the graph below write the equation of the line.
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Answer:

y = 2x+8

Step-by-Step Explanation:

The equation should be in the form of y=mx+b

So you already know it's not A. Also you already know it's not D because the line goes at an angle, if "m"(slope) was 0 then the line would be straight horizontal or straight vertical. So that leaves B and C. And finally you know it's not B because the line is going in the positive direction not negative, so the slope has to be positive, also "b" in the equation is the y-intercept, and that's where the line intersects with the y-axis, and you can see that the line intersects at 8 on the graph. Therefore, the answer is C, y=2x+8

Hope this helps!! :)

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The domain of the function given below is the set of all real numbers f(x)=1/2^x true or false?
Furkat [3]
True. The domain of the function gives all real numbers.
3 0
3 years ago
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A box with a square base and open top must have a volume of 13,500 cm3. Find the dimensions of the box that minimize the amount
Alex17521 [72]

Answer:

Step-by-step explanation:

Let the side of the square base be x

h be the height of the box

Volume V = x²h

13500 = x²h

h = 13500/x² ..... 1

Surface area =  x² + 2xh + 2xh

Surface area S =  x² + 4xh  ...... 2

Substitute 1 into 2;

From 2; S =  x² + 4xh

S = x² + 4x(13500/x²)

S = x² + 54000/x

To minimize the amount of material used; dS/dx = 0

dS/dx = 2x - 54000/x²

0 = 2x - 54000/x²

0 = 2x³ - 54000

2x³ = 54000

x³ = 27000

x = ∛27000

x = 30cm

Since V = x²h

13500 = 30²h

h = 13500/900

h = 15cm

Hence the dimensions of the box that minimize the amount of material used is 30cm by 30cm by 15cm

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3 years ago
How do you show the work for 1/8 doubled
balu736 [363]
If you draw a rectangle divided up into eight even parts, and label them each as 1/8, then you can show your work for how you double it. You do this by "coloring" one in, and then doing the same for a second piece (but color that one in a different way). You can visually double an eighth in that way.

Or, you can simply multiply by 2 to double 1/8:
1/8x2/1=2/8
4 0
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