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dexar [7]
3 years ago
11

Find the exact length of the third side

Mathematics
1 answer:
Furkat [3]3 years ago
4 0

Answer 75

Step-by-step explanation:

first set up the equation for Pythagorean theorem

(45^2)+(60^2)=c^2

square A and B to get 3600+2025=c^2

or 5625=c^2

square root both sides to get 75=c

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I think of a number, I subtract 10 and add 2 . My answer is 20, What was my number​
Alina [70]

Answer:

28

Step-by-step explanation:

x-10+2=20

add -10 and 2 together to simplify the equation

x-8=20

add 8 to both sides to isolate x

x=28

hope this helped!

4 0
3 years ago
A cashier has a total of 30 bills consisting of ones, fives and twenties. the number of twenties is 5 less than the number of on
Varvara68 [4.7K]

Let us say that:

a = ones

b = fives

c = twenties

 

So that the total money is:

1 * a + 5 * b + 20 * c = 229

=> a + 5b + 20c = 229                                       --> eqtn 1

 

We are also given that:

c = a – 5                                                                --> eqtn 2

a + b + c = 30                                                      --> eqtn 3

 

Rewriting eqtn 3 in terms of b:

b = 30 – a – c

Plugging in eqtn 2 into this:

b = 30 – a – (a – 5)

b = 35 – 2a                                                           --> eqtn 4

 

Plugging in eqtn 2 and 4 into eqtn 1:

a + 5(35 – 2a) + 20(a – 5) = 229

a + 175 – 10a + 20a – 100 = 229

11a = 154

a = 14

 

So,

b = 35 – 2a = 7

c = a – 5 = 9

 

Therefore there are 14 ones, 7 fives, and 9 twenties.

7 0
3 years ago
From a population of size 400, a random sample of 40 items is selected. The median of the sample Group of answer choices must be
avanturin [10]

Answer:

400+40+200+400 +200 +10+400×2+10

4 0
3 years ago
Find the area of AAOB<br> 9√3 un²<br> 3√3 un²<br> 4.5√3 un
butalik [34]

Answer:

Step-by-step explanation:

The area of the equilateral triangle is \frac{\sqrt{3}}{4}(6)^{2}=\boxed{9\sqrt{3}}

7 0
2 years ago
Which fraction is easier to convert into a decimal?<br><br> 11/18 or 43/50, explain
alexgriva [62]

43/50 is easier because 50 is half of 100

Watch this

43/50. Since 50 is HALF of 100 so we multiply 2 by 50 which is 100. But since we multiplied by 2 for the denominator we have to do the same for the numerator so 43 x 2 is equal to 86.

So we get 86/100 which is 0.86

5 0
2 years ago
Read 2 more answers
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