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Katarina [22]
4 years ago
9

Please help!! ( you use substitution)

Mathematics
1 answer:
Dvinal [7]4 years ago
4 0
All you have to do is substitute one linear equation into the other one.

So, essentially you will have 2 linear equations side by side each other.

8/5x - 1 = -4/3x - 1

-1 = -4/3x - 8/5x - 1

The solution eventually equals 0.






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7. Marco is making beaded bracelets. Each
stiks02 [169]

One way to find the least common multiple of two numbers is to first list the prime factors of each number.

8 = 2 x 2 x 2

Then multiply each factor the greatest number of times it occurs in either number. If the same factor occurs more than once in both numbers, you multiply the factor the greatest number of times it occurs.

2: three occurrences

3: one occurrence

So, our LCM should be

2 x 2 x 2 x 3 = 24.

So, Marco can buy, at the very least, 24 beads of each color to have equal colors of beads.

4 0
3 years ago
The volume of this cone is 602.88 cubic inches. What is the radius of this cone?
choli [55]

Answer:

8

Step-by-step explanation:

Volume of a cone formula: V = \pi r^{2} \frac{h}{3}

where,

h is the height             <u>9 in  (assuming)</u>

r is the radius              <u>want</u>

v is the volume           <u> 602.88 cubic inches</u>

\pi is                              <u>a = 3.14 </u>

Plug in everything:

602.88 = 3.14r^{2} (\frac{9}{3} )\\602.88 = 3.14r^{2} (3)\\1808.64 = 28.26r^{2}\\\frac{1808.64}{28.26} = \frac{28.26r^{2}}{28.26} \\r^{2} = 64\\r = \sqrt{64} \\r = 8\\or\\r =-8

8 0
3 years ago
Plsss help me Find The Area Of This Shape. Show Your Work.​
ra1l [238]

Answer:

28

Step-by-step explanation:

Area (trapezoid) = 1/2 x (6 + 8) x 4

= 2 x 14

= 28

4 0
2 years ago
And I also need help in this one.
Dvinal [7]
Hey bestie I’m pretty sure it’s 1:3
5 0
3 years ago
A mantee surfaced for air 3 times in 120 seconds
Fantom [35]

Answer:

40 seconds

Step-by-step explanation:

7 0
3 years ago
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