Solve the simultaneous equations. 6x+5y=20 5x+2y=21

Mathematics

1 answer:

Drupady [299]2 years ago

8 0

6x+5y-20=0

that is the first one

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A box with a volume of 40 cubic inches holds 10 balls. A box with a volume of 60 cubic inches holds 15 of the same kinds of ball

lesya692 [45]

Pretend these are coordinates that you can use to find the slope of the line.
(10, 40) and (15, 60). Fit these into the slope formula to find the slope of the line you are looking for:
$m= \frac{60-40}{15-10}$ and the slope is 4. Now use one of the points and the slope of 4 to solve for b, the y-intercept:
40 = 4(10) + b so b = 0. The equation of the line then is y = 4x + 0 or just
y = 4x

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2 years ago

The sum of a number xx and 4 equals 12. an equation that represents this sentence is

lora16 [44]

X + 4 = 12

This is because the question gives you everything you require for this sentence to be formed. 12 is the final answer. 4 is added on and $x$ is basically the number that is to be found.

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2 years ago

Can someone help me please. I can give you extra points. Message me or text me on snap anja4life. To help me with more please

Tju [1.3M]

<h3>Answer: 8</h3>

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Work Shown:

$y = 192\left(4^{x-3}\right)\\\\196,608 = 192\left(4^{x-3}\right)\\\\\frac{196,608}{192} = 4^{x-3}\\\\1024 = 4^{x-3}\\\\4^{x-3} = 1024\\\\\log\left(4^{x-3}\right)=\log\left(1024\right)\\\\(x-3)*\log\left(4\right)=\log\left(1024\right)\\\\x-3=\frac{\log\left(1024\right)}{\log\left(4\right)}\\\\x-3=5\\\\x=5+3\\\\x=8\\\\$

It will take 8 hours for the population to reach 196,608 bacteria.

3 0

2 years ago

Can you explain too? please and thank you

vitfil [10]

Answer:

I think you do 27 divided by 6 then multiple whatever you get by 17

27 divided by 6= 4.5

X 17 = 76.5

Step-by-step explanation:

I think this is how... you find the amount you need for 1 cup flour then multiply by 17 since you now know the amount of honey needed for one cup flour

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2 years ago

Read 2 more answers

Can you help me plzz due in a lil bit

Andre45 [30]

Answer:

Step-by-step explanation:

4 ----- 2/3

15 ----- ????

multiply 15 by 2/3 and divide the result by 4 and you will get the answer.

4 0

2 years ago