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CaHeK987 [17]
3 years ago
12

Evaluate the following expression x^2+x when x=5

Mathematics
1 answer:
Snezhnost [94]3 years ago
4 0

Answer:

30 will be the ans to this question

Step-by-step explanation:

5^2 +5

=25+5

=30

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4x − 8y = –20<br> 4x − 7y = –15
Alja [10]
Y = 5
x = 5
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2 years ago
Bill, Lucas, Carmen, and Dena go bowling every week. When ordered from highest to lower, how many ways can their scores be arran
Sauron [17]
20+ answers are out there
3 0
3 years ago
Given f(x) and g(x) = k•f(x) use the graph to determine the value of k.
Anna [14]

Answer:

Your going to have to add information

Step-by-step explanation:

As in the picture of the graph

5 0
2 years ago
Read 2 more answers
WILL MARK BRAINLIEST!!! NEED THIS ASAP!!
DiKsa [7]
Let's solve this problem step-by-step.

STEP-BY-STEP SOLUTION:

We will be using Pythagoras theorem to solve this problem. This is as this problem forms a right-angle triangle. Pythagoras theorem is the following:

a^2 + b^2 = c^2

Where c = hypotenuse of right-angle triangle

Where a and b = other two sides of right-angle triangle

To begin with, we will substitute the values from the problem into the equation. Then we will make the height of the tree the subject of the equation.

a = height of tree = ?

b = distance from the bird on the ground to the base of the tree = 8 metres

c = distance bird travelled from the ground to the top of the tree = 9 metres

a^2 + b^2 = c^2

a^2 + 8^2 = 9^2

a^2 = 9^2 - 8^2

a = square root of ( 9^2 - 8^2 )

a = square root of ( 81 - 64 )

a = square root of ( 17 )

a = 4.123...

a = 4.1 ( rounded to the nearest tenth )

FINAL ANSWER:

Therefore, the height of the tree is 4.1 metres ( rounded to the nearest tenth ).

Hope this helps! :)
Have a lovely day! <3
3 0
3 years ago
7. Seven times a number is equal to 12 more than 3 times the number.
Jet001 [13]

Answer:

7n = 12+ 3n

Step-by-step explanation:

The first thing to do is subtract 3n from 7n. This would get you 4n = 12. 4 times 3 equals 12, so n equals 3.

To check your answer. 21 = 12+9. sure enough it matches our answer

4 0
2 years ago
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