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den301095 [7]
2 years ago
15

A square has an area of 27.8 cm2.

Mathematics
1 answer:
Liono4ka [1.6K]2 years ago
8 0
5.2 good luck and have a great day:)
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Sally did some counting look at her work explain why you think sally counted this way 177,178,179,180,190,200,220,211,212,213,21
dimulka [17.4K]
<span>The first and last four numbers each have a difference of one between them. The fifth number has a difference of 10 between it and the previous number. The middle number has a difference of 20 between itself and the two numbers that surround it. Counting in this way could have been a result of a lot of things to count, and spot checking along the way (when the numbers have a difference of 1).</span>
8 0
3 years ago
cole spent $55.00 buying songs and movies at an online store that charges $1.25 for each song and $2.75 for each movie. He purch
Sergeu [11.5K]
If you would like to write and solve a system of equations that represent the situation above, you can do this using the following steps:

s ... number of songs
m ... number of movies

$55.00 = $1.25 * s + $2.75 * m
55 = 1.25 * s + 2.75 * m

26 songs and movies = s + m
26 = s + m
s = 26 - m

55 = 1.25 * s + 2.75 * m
55 = 1.25 * (26 - m) + 2.75 * m
55 = 1.25 * 26 - 1.25 * m + 2.75 * m
55 - 32.5 = 1.5 * m
22.5 = 1.5 * m
m = 22.5 / 1.5 = 15 movies

s = 26 - m = 26 - 15 = 11 songs

The correct result would be 15 movies and 11 songs.
6 0
3 years ago
A pen in the shape of an isosceles right triangle with legs of length x ft and hypotenuse of length h ft is to be built. If fenc
Vaselesa [24]

Answer:

\frac{8h}{\sqrt{2}} + 16h

Step-by-step explanation:

First we need to compute the side length as a function of h

So x be the side length of the right isosceles triangle, in Pythagorean formula we have

x^2 + x^2 = h^2

2x^2 = h^2

x = \frac{h}{\sqrt{2}}

The cost for the legs is

C_l = 4*2x = \frac{8h}{\sqrt{2}}

The cost for the hypotenuse is

C_h = 16h

So the total cost in term of h is

C = C_l + C_h = \frac{8h}{\sqrt{2}} + 16h

5 0
3 years ago
Bruno has 8 book shelves. Each shelf can hold 9 books. How many books fit on all 8 shelves? A) 56 books B) 60 books C) 63 books
Lady_Fox [76]

Answer:

D) 72 is correct because 8 times 9 is 72! Hope this helped. :)

8 0
2 years ago
QUESTION 8
12345 [234]
The answer that you should get is 5.4919
6 0
3 years ago
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