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Bogdan [553]
2 years ago
7

Please people i need help ASAP no links

Mathematics
2 answers:
sertanlavr [38]2 years ago
8 0
Answer:
21

Solution:
90 degrees + 15 degrees = 105 degrees. This angle is complementary to 5x. Therefore 105=5x. Solving for x we get 21

Hope this helps. Please mark brainliest
Yuri [45]2 years ago
8 0
5x=90+15
5x=105
x=105÷5
x=21°

Hope my answer helped u :)
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If there are tickets sold to children for $5 and $12 to adults, and there are only 400 tickets sold for $3925 then how many chil
Sever21 [200]

125 children tickets were sold

<u>Solution</u>:

Given that  

Price of 1 ticket sold to children = $5

Price of 1 ticket sold to adult = $12

Total number of ticket sold = 400

Amount generated by selling 400 tickets = $3925.

Need to calculate number of ticket sold to children’s

Let’s assume number of tickets sold to childrens = x

So number of tickets sold to adults = 400 – x

Amount generated from x ticket sold to children =x \times \text { Price of } 1 \text { ticket sold to children }

x \times 5=5 x

Amount generated from (400 – x) tickets sold to adults =x \times \text { Price of } 1 \text { ticket sold to adult }

=(400-x) \times 12=4800-12 \mathrm{x}

<em>Total amount generated from 400 tickets = Amount generated from children’s tickets + Amount generated from adults ticket  </em>

= 5x + (4800 – 12x) = 4800 -7x

As given that amount generated = 3965

=> 3965 = 4800 – 7x

Solving above expression to get value of x, we get

7x = 4800 - 3965  

=> 7x = 875

=> x = 125.

Hence number of children tickets sold = 125.

4 0
3 years ago
when a certain number is added to 11 and the result is multiplied by 3, the final result is 45 . find the number​
oksian1 [2.3K]

Answer:

4

Step-by-step explanation:

Let the number = x

Added to 11 = 11+x

Multiply result by 3 = 3(11+x)

Final result = 45

Solving

3(11 + x) =45

33 +3x = 45

3x= 45-33

3x=12

X=4 by dividing both side by 3

5 0
3 years ago
Simplify. remove grouping sbols and combine like terms
harina [27]

Answer:

5a^2+12b^2-40b

Step-by-step explanation:

First distribute the -4 to the 2b and -3b. This leaves you with 5a^2-8b+12b(b+4)

Now you can distribute the 12b to b and +4. This leaves you with 5a^2-8b+12b^2+48b

Now you can combine your like terms leaving you with 5a^2+12b^2-40b.

3 0
3 years ago
How do we use the Pythagoras theorem in "everyday life".
DochEvi [55]
I use it all the time, but as my profession is engineering, mathematics is integral in my everyday life. I usually do it when evaluating for the magnitude of vector force components. Usually in 2D space, so Pythagorean theorem is quite useful.
5 0
3 years ago
Suppose a jar contains 7 red marbles and 21 blue marbles. if you reach in the jar and pull out 2 marbles at random at the same t
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The probability is 1 out of 3 chance.
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3 years ago
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