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Flauer [41]
3 years ago
12

Brett asked George and Daniela to help him hang up 30 posters for school dance do you 1/5 of the poster to George he gave 1/3 of

the remaining posters to Daniela Brown’s up the remaining posters how many posters did Brett hang
Mathematics
1 answer:
viva [34]3 years ago
4 0

Answer:

16 posters hung by Brett

Step-by-step explanation:

Total number of posters = 30

Number of posters hung by George = \frac{1}{5}(30)=6

Remaining number of posters = 30-6=24

Number of posters hung by Daniela = \frac{1}{3}(24)=8

Number of posters hung by Brett = 30-6-8=16

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What times 2 is equal to 20?
alina1380 [7]
X×2=10 X=10÷2 X=5 Proof: 5×2=10
7 0
4 years ago
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What is the solution set of x^2+y^2=26 and x-y=6
Strike441 [17]
x^{2} + y^{2} =26  x-y=6  x=y+6
 Replacing in equation;  (y+6[tex] )^{2}+y^{2}=26
y^{2} +12x+36+ y^{2} =36
=2y^{2} +12x+36-26=0
=2y^{2} +12x+10=0
Product = 12
Sum= 10
factoring;
2y^{2}+2y+10y+10=0
2y(y+1)+10(y+1)=0
(2y+10)(y+1)=0
y=-1 or 2y=-10
y=-5
x=y+6
When y =-1
x=-1+6
x=5
when y =-5
x=-5+6
x=+1

4 0
4 years ago
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If h(x) = 6 - X, what is the value of (h*h)(10)?
Vikentia [17]

The value of \bold{ h(h(10))=10}

<u>Solution:</u>

Given: h(x) = 6 - x

To find: The value of (h*h)(10)

We know that, (h*h)(x)=h(h(x))

which is,

\Rightarrow h(h(x))=6-(6-x)=x

On solving we get,

\Rightarrow6-6+x=x

So, for x = 10 it will be,

h(h(10))=10

Hence, the required value is 10.

5 0
3 years ago
Work out the area of this semicircle.Take pie to be 3.142 and give your answer to 2 decimal places 10cm
rosijanka [135]

Answer:

The area of the semi circle  A = 157.1 cm^2

Step-by-step explanation:

<u><em>Explanation</em></u>:-

<em>Given radius of circle 'r' = 10 cm</em>

<em>The area of the circle formula </em>

<em>                                 </em>A = \pi (r)^{2}<em></em>

<em>The area of the semi circle formula </em>

                            A = \frac{\pi (r)^{2} }{2}

taking  π =3.142

                           A = 3.142 X \frac{(10)^2}{2}

On calculation , we get

                           A = 157.1 cm^2

<u><em>Final answer</em></u>:-

<em>The area of the semi circle  </em>A = 157.1 cm^2<em></em>

7 0
3 years ago
Y= 3x + 1 <br> Y= x + 5<br> Solving systems of equations
Fofino [41]

Answer:

3x + 1 = x + 5

2x + 1 = 5

2x = 4

x = 2

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(2,7)

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4 years ago
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