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2 years ago

81 is divisible by? 1. 3 2. 4 3. 6 4. 8

Mathematics

1 answer:

KonstantinChe [14]2 years ago

7 0

Answer:

3 is the correct answer hope it helps

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Solve for n: c= 6n−5g /11t

qwelly [4]

Answer: $\frac{11tc+5g}{66t}=n$

Step-by-step explanation:

You have the equation $c=6n-\frac{5g}{11t}$ .

Then, to solve for the variable $n$ from the equation you need:

Make the subtraction of the right side of the equation:

(As the denominators are 1 and $11t$ , the least common denominator is $11t$ )

$c=\frac{(6n)(11t)-5g}{11t}\\\\c=\frac{66nt-5g}{11t}$

Multiply $11t$ to both sides:

$(11t)c=(\frac{66nt-5g}{11t})(11t)\\\\11tc=66nt-5g$

Add $5g$ to both sides:

$11tc+5g=66nt-5g+5g\\\\11tc+5g=66nt$

And finally divide both sides by $66t$ :

$\frac{11tc+5g}{66t}=\frac{66nt}{66t}\\\\\frac{11tc+5g}{66t}=n$

3 0

3 years ago

Write down the integer values satisfied by this diagram.

Alinara [238K]

Step-by-step explanation:

well it represents

-1 < X ≥ 3

so answer is 0 1 2 3

7 0

2 years ago

Rajan needs 1 liter of 15% hydrochloric acid solution for an experiment. He checks his storage cabinet, but he only has a 5-lite

Delvig [45]

Answer:

0.75 liters of 5% hydrochloric acid solution
0.25 liters of 45% hydrochloric acid solution.

Step-by-step explanation:

Let us assume that, x liters of the 5% hydrochloric acid and y liters of the 45% hydrochloric acid solutions are combined.

As Rajan need total of 1 liter of solution, so

$x+y=1$

i.e $x=1-y$ --------------------1

As Rajan needs 5% hydrochloric acid and 45% hydrochloric acid to make a 1 liter batch of 15% hydrochloric acid, hence acid content of the mixture of two acids will be same as of the final one, so

$0.05x+0.45y=1\times 0.15$

i.e $5x+45y=15$ -------------2

Putting value of x from equation 1 in equation 2,

$\Rightarrow 5(1-y)+45y=15$

$\Rightarrow 5-5y+45y=15$

$\Rightarrow 5+40y=15$

$\Rightarrow 40y=15-5=10$

$\Rightarrow y=0.25$

Putting the value of y in equation 1,

$x=1-0.25=0.75$

Therefore, Rajan must use 0.75 liters of 5% hydrochloric acid solution and 0.25 liters of 45% hydrochloric acid solution.

4 0

3 years ago

What is the solution of the system? Use the elimination method. 2x+y=206x−5y=12 Enter your answer in the boxes.

astraxan [27]

Answer:

The answer to your question is: x = 7; y = 6

Step-by-step explanation:

2x+y=20 ( 1 ) Multiply by 5

6x−5y=12 ( 2 )

5 (2x+y=20) = 10x + 5y = 100

10x + 5y = 100

6x − 5y = 12 Eliminate y

16 x = 112

x = 112 / 16

x = 7

2(7) + y = 20 Substitution

14 + y = 20

y = 20 - 14

y = 6

7 0

3 years ago

Write a Rule for a Composite Function

zysi [14]

Answer:

Step-by-step explanation:

Observing that f has to be placed inside g, we can easily substitute x^2 - 3 in place of the x in x + 1, making it

(x^2 - 3) + 1 which equals

(x^2) - 2

5 0

3 years ago