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SpyIntel [72]
3 years ago
8

And isosceles triangle has two sides of equal length. The third side is five less than twice the length of one of the other site

s. If the perimeter of the triangle is 23 cm, what is the length of the third triangle?
Explain how you would define a variable for this problem.

Mathematics
1 answer:
Scorpion4ik [409]3 years ago
7 0

Answer:

The third side has a length of 9

Step-by-step explanation:

The two sides of equal length can be represented as x, and x

The thirds side is five less that twice the length of the other sides can be represented as  2x - 5.

The perimeter is 23, so the sum of all 3 sides is 23, now we have..

x + x + 2x - 5 = 23          solve for x...

4x = 28

x = 7,

so two sides are 7, and 7, and the third side is

2(7) - 5

  14 - 5

   9

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I am greater than 54 fewer tens than 90?
Lubov Fominskaja [6]
In all cases, we will let x represent the number.
1) 54 tens = 540
90 - 540 = -450
x > -450

2) x < 36 and x > 24
24 < x < 36

3) 8 tens and 5 ones = 80 + 5 = 85
x > 85

4) x > 27
x < 33
And the value in the ones place is less than the value in the tens place, so
30 ≤ x ≤ 32
6 0
3 years ago
5x – (13 – x) &gt;_9x – 7
ad-work [718]

Answer:

x<_2

Step-by-step explanation:

first off solve this like a regular equation the >_ dosent matter till later

so basically first multiply - by 13 and -x so you get -13 and x (multiplying two negatives = a positive)

so its 5x-13+x>_9x-7

add 5x and x to get 6x-13 on one side

then you get 6x-13>_9x-7 then subtract -9x from both sides

so its now -3x-13>_-7 add 13 so you get -3x>_6

then divide both sides by -3 (when you divide an equation with a >< or <_ >_ by a negative number that sign switches) so it will now be x<_2

that your final answer hope this helps :)

6 0
3 years ago
A one pound bag of skittles contains 300 pieces of which 28% are red. How many skittles were red?
lesantik [10]

Answer:84

Step-by-step explanation:

3 0
3 years ago
An engineer on the ground is looking at the top of a building. The angle of elevation to the top of the building is 22°. The eng
Pavlova-9 [17]
Let the distance from the engineer to the base of the building be x, then
tan 22 = 450/x
x = 450/tan 22 = 1,113.79

Therefore the distance from the engineer to the base of the building to the nearest foot = 1,114 feet
5 0
3 years ago
11 –2<br><br> · <br> 3 –4<br><br> · <br> 6 2<br><br> =
Sav [38]

Answer: negative 243

11 - 2 x 3 - 4 x 62 =

11 - 6 - 4 x 62=

11 - 6 - 248=

5 - 248=

-243

4 0
3 years ago
Read 2 more answers
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