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Savatey [412]
3 years ago
7

HHHHHHHEEEEEEEEEEEEEEEEEEELLLLLLLLLLLLLLLLLLLLLPPPPPPPP

Mathematics
1 answer:
Furkat [3]3 years ago
8 0

Answer:

120

Step-by-step explanation:

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Helllp fast please help
Snezhnost [94]

Answer: 1,347 points

Step-by-step explanation:

542 + 805 = 1,347

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Which of these relations is a function?
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The last one (-1,0) (2, 15) (20)
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The length of a side and corresponding height of a triangle are (x+3) and (2x-5) given that area of triangle is 20cm^2. Find the
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Answer:

x = 5

Step-by-step explanation:

The area (A) of a triangle is calculated as

A = \frac{1}{2} bh ( b is the base and h is height )

Here A = 20, b = (x + 3) and h = (2x - 5) , then

\frac{1}{2} (x + 3)(2x - 5) = 20 ← multiply both sides by 2

(x + 3)(2x - 5) = 40 ← expand left side using FOIL

2x² + x - 15 = 40 ( subtract 40 from both sides )

2x² + x - 55 = 0 ← in standard form

(x - 5)(2x + 11) = 0 ← in factored form

Equate each factor to zero and solve for x

x - 5 = 0 ⇒ x = 5

2x + 11 = 0 ⇒ 2x = - 11 ⇒ x = - 5.5

But x > 0 , so x = 5

8 0
3 years ago
A jar has 15 marbles: 4 are green, 6 are red, and 5 are yellow. What is the probability that we will get a red marble or the gre
Crank

2/3

There are 4 green marbles and 6 red marbles, making 10 green or red marbles.  The probability of drawing a red or a green marble is then 10/15 total marbles, which can be simplified to 2/3 by dividing the numerator and denominator each by 5.

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3 years ago
A circle had a circumference of 138.16 meters. What is the diameter of the circle?
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Divide 138.16 by 3.14. This gives a diameter of 44 meters. 

Hope this helped :)
8 0
3 years ago
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