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3 years ago

7

Help please! Will give brainlest!

2 answers:

stira [4]3 years ago

6 0

The answer is 17/22 17/20 because of the fractions

nadya68 [22]3 years ago

5 0

A. top left

here an explanation, say you have two really big pizzas that are both the same exact size, now say you cut 20 pieces out of the first on and 22 out of the second. since theres more slices on the second one the pieces will be slimmer. now if you remove 17 from both, the first pizza with 20 slices will have more left over because since 20 is less than 22 the slices from the first pizza are wider making for more pizza per slice.

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What is the answer for 4i over 3+7i

icang [17]

Answer:

see explanation

Step-by-step explanation:

given $\frac{4i}{3+7i}$

To rationalise multiply the numerator/denominator by the conjugate of the denominator

the conjugate of 3 + 7i is 3 - 7i, hence

$\frac{4i(3-7i)}{(3+7i)(3-7i)}$

distribute the numerator/denominator

= $\frac{12i-28i^2}{9-49i^2}$

[ note that i² = - 1 ]

= $\frac{12i+28}{9+49}$

= $\frac{28+12i}{58}$

= $\frac{28}{58}$ + $\frac{12}{58}$ i

= $\frac{14}{29}$ + $\frac{6}{29}$ i ← in standard form

6 0

3 years ago

How many 1/ 4-inch cubes does it take to fill a box with width 2 1/ 4 inches, length 2 1/ 2 inches, and height 1 3/ 4 inches?

lys-0071 [83]

Answer:

630.

Step-by-step explanation:

<u>Given the following data;</u>

Dimensions for cube = ¼ inches

$Volume \; of \; cube = \frac {1}{4} * \frac {1}{4} * \frac {1}{4}$

Volume = 1/64 cubic inches.

For rectangular box;

Length = 2½ = 5/2 inches.

Width = 2¼ = 9/4 inches.

Height = 1¾ = 7/4 inches.

$Volume \; of \; cube = \frac {5}{2} * \frac {9}{4} * \frac {7}{4}$

Volume = 315/32 inches

Therefore, to find the amount of cubes;

$Number \; of \; cubes = \frac {Volume \; of \; box}{Volume \; of \; cube}$

Substituting into the equation, we have;

$Number \; of \; cubes = \frac {\frac {315}{32}} {\frac {1}{64}}$

$Number \; of \; cubes = \frac {315}{32} * 64$

$Number \; of \; cubes = 315 * 2$

Number of cubes = 630

6 0

3 years ago

Read 2 more answers

Pleasseee hellp for brainleist answer and extra points if you correct the 2 first top rows

andrew-mc [135]

So close! But instead of adding the multiplication sign after the number you need to add them before. Good job though! :)

7 0

3 years ago

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Select all that apply. Which lines have a slope of -2? Line a line b line c line d

katrin2010 [14]

Do you have a photo of the options?

8 0

3 years ago

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0.3 repeating as a fraction

melomori [17]

Answer:

3/10 or three-tenths

Step-by-step explanation:

Hope this helps=D

3 0

3 years ago

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