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3 years ago

Can you answer these boxes? It's fractions and powers

Mathematics

2 answers:

natali 33 [55]3 years ago

4 0

Answer:

d^2 e^4

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b^3

Step-by-step explanation:

r-ruslan [8.4K]3 years ago

3 0

Answer:

e^4 d^2

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b^3

Step-by-step explanation:

b^-3 c^0 d^2

-------------------------

e^-4

Negative exponents flip positions

e^4 c^0 d^2

-------------------------

b^3

c to the zero power is 1

e^4 d^2

-------------------------

b^3

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Please help with all of these!!

bija089 [108]

I can't see it clearly the questions ?

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3 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: $V=196in^3$

4 0

3 years ago

(4x 2 − 2x + 10) + (−2x 2 + 4x − 2)

Mariulka [41]

Answer:

2x²+2x+8

Step-by-step explanation:

4x²-2x+10-2x²+4x-2

=4x²-2x²-2x+4x+10-2

=2x²+2x+8

6 0

2 years ago

Jose works at a restaurant. They earn 14.45 per hour plus a 8.50 each time someone signs up for the store's credit card.

lidiya [134]

m = money earned in one week

h = hours worked

x = times credit card was swiped

m = 14.45h + 8.50x

7 0

2 years ago

The answer is down below please help meeee

monitta

Answer:

TheaterMania, basically you are getting more popcorn for $1, thats how did it.

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2 years ago

Read 2 more answers