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2 years ago

Translate mathematical word sentence into written expression: a/2=9

Mathematics

1 answer:

Burka [1]2 years ago

6 0

Answer:

a/2 = 9

a divided by 2 gives 9.
Half of a is equivalent to 9.

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Complete the equation 4/5= ____× 1/5

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Answer:

HI! I think the answer is 4.

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2 years ago

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F(x) = 1?-1.9(x) = x - 2. Find (a) ( + g)(3)

ValentinkaMS [17]

Answer: f(x)=1-1.9x=x-2

Step-by-step explanation:

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3 years ago

Write an equation of the line that passes through (2,-4) and (0,4)

LenKa [72]

Answer:

step 1. y - y1 = m(x - x1). this is the equation given a point and a slope.

step 2. find the slope m. m = (y2 - y1)/(x2 - x1) = (4 - (-4))/(0 - 2) = 8/-2 = -4.

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2 years ago

For her presentation on the Wonders of the World, Mary baked a square pyramid-shaped cake as pictured below. The slant height of

mihalych1998 [28]

Answer:

$V=196in^3$

Step-by-step explanation:

The volume of a pyramid is:

$V=\frac{A_{b}h}{3}$

where $A_{b}$ is the area of the base and $h$ is the height (the perpendicular measurement between base and highest point, not the slant height)

Since the base is a square, the area is given by:

$A_{b}=l^2$

where $l$ is the length of the side: $l=8in$ , thus:

$A_{b}=(8in)^2\\A_{b}=64in^2$

Now we need to find the height, for this we use the right triangle that forms with half of a square side (8in/2 = 4in), the slant height (10in), and the height.

In this right triangle, the slant height is the hypotenuse, the leg 1 is the unknown height, and leg 2 is half of the square side.

Using pythagoras:

$hypotenuse^2=leg1^2+leg2^2$

substituting our values, and indicating that leg 1 is height h:

$(10in)^2=h^2+(4in)^2$

$100in^2=h^2+16in^2$

and solving for the height:

$h^2=100in^2-16in^2\\h^2=84in^2\\h=\sqrt{84in^2}\\ h=9.165in$

and finally we calculate the volume using this height and the area of the base:

$V=\frac{A_{b}h}{3}$

$V=\frac{(64in^2)(9.165in)}{3} \\V=195.5in^3$

rounding to the nearest cubic inch: $V=196in^3$

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3 years ago

I will mark brainliest if you are correct!

notsponge [240]

Answer:

i think the answer is C

Step-by-step explanation:

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2 years ago

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