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2 years ago

Solve using elimination 12s+7l=332 9s+14l=424 Will mark as brainlist

Mathematics

2 answers:

loris [4]2 years ago

4 0

Answer:

s = 16

l = 20.

Step-by-step explanation:

12s + 7l = 332

9s + 14l = 424

Multiply first equation by -2:

-24s - 14i = -664 Now add this to second equation:

-15s = -240

s = 16

Now substitute s = 16 in equation 2:

9(16) + 14i = 424

14i = 424 - 144 = 280

l = 20.

GenaCL600 [577]2 years ago

3 0

12s+71=332
-71 -71
12s=261
S=21.75

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djyliett [7]

Answer:

$4\dfrac{3}{8}$ cups of flour

Step-by-step explanation:

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Thus,

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2 years ago

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Ira Lisetskai [31]

Step-by-step explanation:

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7 0

1 year ago

A marble is selected at random from a jar containing 3 red marbles, 4 yellow marbles, and 6 green marbles. What is the probabi

alexgriva [62]

Answer: a) $\dfrac{3}{13},\ b)\dfrac{9}{13}\ c)\dfrac{9}{13},\ d)\dfrac{4}{13}$

Step-by-step explanation:

Since we have given that

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Number of green marbles = 6

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b) the marble is not yellow?

Probability of not getting yellow = $\dfrac{3+6}{13}=\dfrac{9}{13}$

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Hence, a) $\dfrac{3}{13},\ b)\dfrac{9}{13}\ c)\dfrac{9}{13},\ d)\dfrac{4}{13}$

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2 years ago

Solve the following equations;- x - 9 /√x + 3 =1

fgiga [73]

Answer:

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Step-by-step explanation:

A equation is given to us and we need to find out the value of x . The given equation to us is ,

$\sf\implies \dfrac{ x -9}{\sqrt{x+3}}= 1$

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$\sf\implies (x - 9)^2 = x + 3$

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$\sf\implies x^2+81 - 18x = x -3$

Add 3 and subtract x on both sides ,

$\sf\implies x^2 -18x-x +81-3=0$

Simplify ,

$\sf\implies x^2 -19x +78=0$

Split the middle term of the quadratic equation,

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Take out ( x -13 ) as common ,

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Hence the value of x is 13 or 6 .

7 0

2 years ago

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Lapatulllka [165]

Options :

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B. The initial of bacteria decreases at a rate of 93% each day.

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D. The number of bacteria at the end of one day is 360.

Answer:

C. The number of bacteria increases at a rate of 7% each day.

Step-by-step explanation:

Given the function :

f(x)=360(1.07)^x ; Number of bacteria in sample at the end of x days :

The function above represents an exponential growth function :

With the general form ; Ab^x

Where A = initial amount ;

b = growth rate

x = time

For the function :

A = initial amount of bacteria = 360

b = growth rate = (1 + r) = 1.07

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1 + r = 1.07

r = 1.07 - 1

r = 0.07

r as a percentage ;

0.07 * 100% = 7%

7 0

2 years ago