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1 year ago

Convert a mark of 72 out of 120 to a mark out of 300

Mathematics

1 answer:

Semmy [17]1 year ago

5 0

Answer:

180 out of 300

Step-by-step explanation:

Basically,

300÷120=2.5

Thereof,

72×2.5=180.

Hope this helps!

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-2x+15y=24 2x+9y=24, what is the value of x and y

kaheart [24]

Eliminate x's by adding te 2 equations

add them

-2x+15y=24
2x+9y=24 +
0x+24y=48

24y=48
divide both sides by 24
y=2

sub back

2x+9y=24
2x+9(2)=24
2x+18=24
minus 18 both sides
2x=6
divide 2
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x=3
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2 years ago

Which shows how to rewrite 4 x 47 using the Distributive Property?

mash [69]

Answer:

Step-by-step explanation:

Something that is 17 more than r means that it is r + 17.

Therefore, the answer is C, r + 17.

Hope that helps!

-Sabrina

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2 years ago

A golf ball of diameter 1.68 inches rolls a distance of 4m in a straight line. How many times does the ball. completely? (1 inch

marin [14]

Answer: 29.9

Step-by-step explanation:

We know that

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2 years ago

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Answer:

Step-by-step explanation:

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2 years ago

Read 2 more answers

X^2 + 32x + 256 = 1 please show steps

Elena L [17]

$\boxed{x_{1}=-15} \\ \\ \boxed{x_{2}=-17}$

<h2>Explanation:</h2>

In this case, we have the following equation:

$x^2+32x+256=1$

But we can write this equation as:

$x^2+32x+256=1 \\ \\ Subtract \ -1 \ from\ both \ sides: \\ \\ x^2+32x+256-1=1-1 \\ \\ x^2+32x+255=0$

So this final result is a quadratic equation written in Standard Form ( $ax^2+bx+c=0$ ). We need to find the solutions to this equations, so let's use quadratic formula:

$x=\frac{-b \pm \sqrt{b^2-4ac}}{2a} \\ \\ a=1 \\ b=32 \\ c=255 \\ \\ \\ x=\frac{-32 \pm \sqrt{(32)^2-4(1)(255)}}{2(1)} \\ \\ x=\frac{-32 \pm \sqrt{1024-1020}}{2} \\ \\ x=\frac{-32 \pm \sqrt{4}}{2} \\ \\ x=\frac{-32 \pm 2}{2} \\ \\ Finally, \ two \ solutions: \\ \\ \boxed{x_{1}=-15} \\ \\ \boxed{x_{2}=-17}$

<h2>Learn more:</h2>

Quadratic Equations: brainly.com/question/10278062

#LearnWithBrainly

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2 years ago