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3 years ago

Please explain :) Expand 5x(x+2) Thanks :)

Mathematics

1 answer:

Volgvan3 years ago

4 0

Answer:

${5 x }^{2} +10x$

Step-by-step explanation:

$5x(x+2)$

$5x \times x+5x \times 2$

$5(x \times x)+5x \times 2$

$5 {x}^{2} +5x \times 2$

$5 {x}^{2} + 10x$

<h3>Hope it is helpful....</h3>

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Given a right triangle, find the measures of all the angles, in degrees, if one angle is a right angle and the measure of the se

mylen [45]

Answer:

90°, 78°, 12°

Step-by-step explanation:

let the third angle be x then the second angle is 7x - 6

Since 1 of the angles in the triangle is 90° then the second and third angles sum to 90° , then

x + 7x - 6 = 90

8x - 6 = 90 ( add 6 to both sides )

8x = 96 ( divide both sides by 8 )

x = 12

Then

second angle = 7x - 6 = 7(12) - 6 = 84 - 6 = 78°

The 3 angles are 90°, 78°, 12°

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3 years ago

The focal length F of a lens made by combining two lenses of focal length U and V is given I/F=I/U+I/V

jolli1 [7]

Answer:

a). $V=\frac{U.F}{U-F}$

b). V = 15 units

Step-by-step explanation:

Focal length F of a lens made by combining two lenses of different focal lengths U and V will be,

$\frac{1}{F}=\frac{1}{U}+\frac{1}{V}$

A). By solving the given formula,

$\frac{1}{V}=\frac{1}{F}-\frac{1}{U}$

$\frac{1}{V}=\frac{U-F}{U.F}$

$V=\frac{U.F}{U-F}$

B). If F = 6 and U = 10 then we have to find the value of V.

By substituting the given values in the formula,

$V=\frac{6\times 10}{10-6}$

$V=\frac{60}{4}$

V = 15 units

Therefore, focal length (V) of the lens = 15 units

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4 years ago

Figure VWYX is a kite.<br><br> What is the value of x?

Alecsey [184]

Answer:

$x=6\°$

Step-by-step explanation:

we know that

The sum of the internal angles of a kite is equal to $360\°$

In this problem we have

$90\°+90\°+(18x-2)\°+(12x+2)\°=360\°$

$(18x-2)\°+(12x+2)\°=360\°-180\°$

$30x=180\°$

$x=6\°$

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3 years ago

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A chief makes one 1 1/2 gallons of soup in a large pot how many one cup servings can the chief get from this large pot of soup

Elenna [48]

So,

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4 years ago