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Scrat [10]
2 years ago
5

What is this problem?

times%2010%20%7B%7D%5E%7B3%29%7D%20" id="TexFormula1" title="(4.6 \times 10 {}^{3} ) + (8.72 \times 10 {}^{3)} " alt="(4.6 \times 10 {}^{3} ) + (8.72 \times 10 {}^{3)} " align="absmiddle" class="latex-formula">
Mathematics
1 answer:
podryga [215]2 years ago
8 0
The answer would be 13,320
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In a classroom of 28 students: 19 of the students have brown eyes 13 of the students wear glasses 7 of the students do not have
V125BC [204]

Total students = 28

Students with brown eyes = 19

students wear glasses = 13

Not brown eyes or no glasses = 7


Not brown eyes = 28 - 19 = 9

Not wearing glasses = 28 - 13 = 15

Not brown eyes and wearing glasses = 15 - 9 = 6

Brown eyes and wearing glasses = 13 - 6 = 7 <==== answer

7 0
2 years ago
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Quick help with math please? 50 points.
Elden [556K]

y≤-2x +2

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this is the answer to this

7 0
3 years ago
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Please if your answering it please i need it step by step please
salantis [7]
I) there are 360 degrees in a circle.  So subtract all the numbers from 360 to get the angle for econ.

That angle is 65 degrees

ii) If 95 degrees represents 228 books, then 360 degrees represents "x" (total) books.  So we have an equation:
<u>95</u> = <u>360</u>
228     x

Solve for x, and we get x = 864

iii) The percentage is 80 degrees out of 360 degrees or 2/9 or roughly 0.222 or 22.2%
4 0
3 years ago
The price of a watch was increased by 20% to £198.<br> What was the price before the increase?
garik1379 [7]

Answer:

158.4

Step-by-step explanation:

5 0
3 years ago
If x2 - y2 = 12 and x - y = 4, what is the value
ira [324]

Step-by-step explanation:

x²-y²=12

(x-y)(x+y)=12

but x-y=4

4(x+y)=12

x+y=12/4

x+y=3

lets make x the subject of the formula

x=3-y

since x-y=4

(3-y)-y=4

3-y-y=4

-2y=1

y=-1/2

then x=3-y

x=3-(-1/2)

x=(6--1)/2

x=7/2

therefore; x²+2xy+y

=(7/2)²+2×7/2×-1/2+(-1/2)

=49/4-7/2-1/2

=(49-14-2)/4

=33/4

=8.25

=8

6 0
3 years ago
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