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notka56 [123]
3 years ago
11

I need help please help m

Mathematics
1 answer:
Bond [772]3 years ago
5 0

there are 10 numbers you want either a 4 or 7 ( 2 numbers)

 so probability is 2/10 which reduces to 1/5

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6-√8 divide √2-1
agasfer [191]

Answer:

4\sqrt{2}  +2

Step-by-step explanation:

\frac{6-\sqrt{8}}{\sqrt{2}-1}

=\frac{6-\sqrt{8}}{\sqrt{2}-1} ×\frac{\sqrt{2}+1}{\sqrt{2}+1}

=\frac{(6-\sqrt{8})(\sqrt{2}+1)}{2-1}

=6\sqrt{2} + 6 -\sqrt{8}\sqrt{2} - \sqrt{8}

=6\sqrt{2} + 6 - 4 - \sqrt{8}

=6\sqrt{2} + 2 - \sqrt{8}

=6\sqrt{2} + 2 - 2

=4\sqrt{2}  +2

for \sqrt{8} = 2\sqrt{2} ,

\sqrt{8} = \sqrt{2*2*2}

     = (\sqrt{2})^2 × \sqrt{2}

     =2 ×\sqrt{2}

5 0
3 years ago
Help i dont understand this
Igoryamba
I’m not extremely good at math but I think you need to make -x-y=1 into y=mx+b form and then solve your new equation!
4 0
3 years ago
At a regional soccer​ tournament, tickets for two adults and seven students cost ​$60. Tickets for three adults and eleven stude
den301095 [7]

Answer:

The price of an adult ticket is $9 and the price of a student ticket is $6

Step-by-step explanation:

Create a system of equations where x is the price of an adult ticket and y is the price of a student ticket:

2x + 7y = 60

3x + 11y = 93

Solve by elimination by multiplying the top equation by 3 and the bottom equation by -2, to cancel out the x terms:

6x + 21y = 180

-6x - 22y = -186

Add them together:

-y = -6

y = 6

Then, plug in 6 as y into one of the equations to solve for x:

2x + 7y = 60

2x + 7(6) = 60

2x + 42 = 60

2x = 18

x = 9

So, the price of an adult ticket is $9 and the price of a student ticket is $6

8 0
3 years ago
Plz help i just dont get and plz do not put a file its annoying
8090 [49]

Answer:

Hello! Your answer would be, BELOW!

Step-by-step explanation:

A)

40

D)

Hope I helped! Ask me anything if you have more questions! Have a nice mourning! Brainiest plz! Hope you make an 100%! -Amelia♥

7 0
2 years ago
The cost of turkey is directly proportional to its weight. If a 12-pount turkey costs $27, how much does a 13-pound turkey cost?
Pavel [41]

Answer:

$29.25

Step-by-step explanation:

Divide the cost of the turkey by 12 to obtain the unit cost then multiply this by 13

cost = \frac{27}{12} × 13 = $29.25


6 0
3 years ago
Read 2 more answers
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