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musickatia [10]
3 years ago
7

How do I solve this problem?

Mathematics
1 answer:
nexus9112 [7]3 years ago
5 0
Subtract the second equation from the first equation.
x = -1
Plug -1 back in to either equation and solve for y.
3(-1) + y =-10
-3 + y = -10
Add 3 to both sides
y = -7
CHECK
3(-1) -7 = -10
2(-1) -7 = -9
(-1, -7)
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If the cylinder above is similar to a second cylinder that has a radius of 10mm, what is the height of the second cylinder
julsineya [31]

Answer:

The height of the second cylinder is 30mm

Step-by-step explanation:

Given

Cylinder 1:

R = 15mm

H = 45mm

Cylinder 2

r = 10mm

See attachment

Required

Determine h, the height of the small one

To do this, we make use of the following equivalent ratios;

R : H = r : h

This gives:

15 : 45 = 10 : h

Express as fraction

\frac{15 }{ 45 }= \frac{10 }{ h}

Simplify

\frac{1 }{ 3}= \frac{10 }{ h}

Cross multiply

h *1 = 3 * 10

h = 30

8 0
2 years ago
7th grade math help me please :)))
yanalaym [24]

Answer:

$284.99 should go to Mr. Aceves’ class, $174.41 should go to Mrs. Baca’s class, and $140.60 should go to Mr. Canyon’s class.

Step-by-step explanation:

Firstly, to calculate the portions each class should have, we should find the proportion each class takes up.

Hence, let's say A represents Mr. Aceves' class, B represents Mrs. Baca's class, and C represents Mr. Canyon's class.

The total number of box tops collected would be 3760 + 2301 + 1855 = 7916 box tops.

Therefore, the total proportions would be:

A = \frac{3760}{7916}

B = \frac{2301}{7916}

C = \frac{1855}{7916}

Hence, we can finally multiply these proportions with the total prize to find the appropriate division:

Mr. Aceves' class gets \frac{3760}{7916} \cdot 600 \approx 284.99.

Mrs. Baca's class gets \frac{2301}{7916} \cdot 600 \approx 174.41.

And Mr. Canyon's class gets \frac{1855}{7916} \cdot 600 \approx 140.60.

Finally, $284.99 should go to Mr. Aceves’ class, $174.41 should go to Mrs. Baca’s class, and $140.60 should go to Mr. Canyon’s class.

Hope this helped!

7 0
3 years ago
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Charra [1.4K]

Answer:

x

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−

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1

2

Isolate the variable by dividing each side by factors that don't contain the variable.

6 0
2 years ago
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romanna [79]
Substitute the values.
2(3)(2)=?
2*3=6
6*2=12
Final answer: 12
8 0
3 years ago
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Answer:

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