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3 years ago

In a class the ratio of boys to girls is 2:1. There are 8 girls. Work out the number of boys.

Mathematics

1 answer:

olga2289 [7]3 years ago

4 0

Answer:

Step-by-step explanation:

since the ratio is 2 to 1. 2 as boys and 1 as girls and there are 8 girls. Multiply 1 by 8 and you get 8 girls. multiply 2 by 8 and you get 16 boys.

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A submarine was situated 600 feet below sea level. An airplane directly above is at a height of 8,500 feet.

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Answer:

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2 years ago

Write an ordered pair for each point graphed below.

Viefleur [7K]

Answer:

$\boxed{(-1,4)}$

Step-by-step explanation:

The point is located in Quadrant II of the graph, where x-values are negative and y-values are positive.

Each marking on the graph represents one unit of distance. The two <em>axes</em> meet at the origin, where the coordinate point is equal to $(0,0)$ .

So, you can count backwards once from the origin to get your x-value ⇒ $-1$ and count up upwards four times from $x=-1$ to get your y-value ⇒ $4$ .

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3 years ago

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3 years ago

In a right triangle the length of a hypotenuse is c and the length of one leg is a, and the length of the other leg is b, what i

swat32

Apply the Pythagoras Theorem

${c }^{2} = {a}^{2} + {b}^{2}$
${9 }^{2} = {7}^{2} + {b}^{2}$
$81 = 49+ {b}^{2}$
$81 - 49 = {b}^{2}$
$32= {b}^{2}$
Take square root of both sides

$b = \sqrt{32}$
$b = 4 \sqrt{2}$

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4 years ago

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Which expressions are equivalent?

vova2212 [387]

A) 3(a - b) = 3*a +3*-b = 3a - 3b EQUAL

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3 years ago

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