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ANTONII [103]
3 years ago
11

The stack on the left is made up of 15 pennies, and the stack on the right is also made up of 15 pennies. If the volume of the s

tack of pennies on the left is 390 mm3, what is the volume of the stack of pennies on the right in cubic millimeters?
Mathematics
2 answers:
Stolb23 [73]3 years ago
6 0
I was told the answer was 375mm3 

Dmitry_Shevchenko [17]3 years ago
3 0

Answer:

390 would be the answer

Step-by-step explanation:

they are literally the same thing.

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Can someone pls help me!
Sedbober [7]

Answer: y =2x-5

Work:

2x-y=5

-y=-2x+5

-1y/-1 = -2x+5/-1

y =2x-5

5 0
2 years ago
The ratio of Wei Ling's age to Wei Xuan's age 5 years ago was 2: 5. In 9 years
Archy [21]

Answer:

15 years old

Step-by-step explanation:

Start by defining the variables that we are going to use throughout our working:

Let the current age of Wei Ling and Wei Xuan be L and X years old respectively.

Next, form equations using the given information.

<u>5 years </u><u>ago</u>

Wei Ling: (L -5) years old

Wei Xuan: (X -5) years old

Given that the ratio of Wei Ling's age to that of Wei Xuan's is 2: 5,

\frac{ L - 5}{X - 5}  =  \frac{2}{5}

Cross multiply:

2(X -5)= 5(L -5)

Expand:

2X -10= 5L -25

2X= 5L -25 +10

2X= 5L -15 -----(1)

<u>9 years time</u>

Wei Ling: (L +9) years old

Wei Xuan: (X +9) years old

Given that the ratio of Wei Ling's age to that of Wei Xuan is 3: 4,

\frac{L + 9}{X + 9}  =  \frac{3}{4}

Cross multiply:

3(X +9)= 4(L +9)

Expand:

3X +27= 4L +36

3X= 4L +36 -27

3X= 4L +9 -----(2)

Let's solve using the elimination method.

(1) ×3:

6X= 15L -45 -----(3)

(2) ×2:

6X= 8L +18 -----(4)

(3) -(4):

6X -6X= 15L -45 -(8L +18)

0= 15L -45 -8L -18

0= 7L -63

7L= 63

L= 63 ÷7

L= 9

Substitute L= 9 into (1):

2X= 5(9) -15

2X= 45 -15

2X= 30

X= 30 ÷2

X= 15

Thus, Wei Xuan is 15 years old now.

6 0
2 years ago
A pizza parlor offers thin,thick,and traditional style pizza crust.You can get pepperoni,beef,mushrooms, olives,or peppers. You
WITCHER [35]
You need to understand the different kinds of categories in order to solve this problem.

There are:
types of crusts - 3
types of toppings - 5

You multiply these together (3 x 5)

Your answer should be 15
3 0
3 years ago
Y + 2 = 1/2x - 2 in standard form.
natta225 [31]

Answer:

x - 2y - 8 = 0

Step-by-step explanation:

y + 2 = 1/2x - 2

y + 2 + 2 - 1/2x = 0

-1/2x + 4 + y = 0

-2[-1/2x + y + 4] = 0(-2)

x - 2y - 8 = 0

3 0
3 years ago
Graph the line with the equation y=1/5x+4.
Artemon [7]

Step-by-step explanation:

I hope this helps you answer your question and sorry if its wrong.

4 0
2 years ago
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