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3 years ago

Give a description of the rules for the order of operation in your own words

Mathematics

1 answer:

anyanavicka [17]3 years ago

3 0

Answer:

Order of opoation is a techniqe that gives us a easier way to figure out work

Step-by-step explanation:

Please mark me as brainiset

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Sara is 6 years older than max in 3 years she’ll be 1 1/2 of max’s age . how old is max ?

Andrews [41]

S = m+6
(s + 3) = (m + 3)1.5
When solved m=9 and s=15
When plugged in it works.
So max is 9 years old

4 0

3 years ago

In ΔXYZ, x = 8.3 meters, y = 9 meters, and z = 15 meters. Find the remaining measurements of the triangle, and round your answer

laila [671]

Answer:

The correct answer is B. ∠X = 28.6°, ∠Y = 31.2°, ∠Z = 120.2°

Step-by-step explanation:

Let's recall that for solving a SSS triangle, we :

1. Use the Law of Cosines first to calculate one of the angles

2. Use The Law of Cosines again to find another angle

3. Finally use angles of a triangle add to 180° to find the last angle.

1. Cos x = (9² + 15² - 8.3²/2 * 9 * 15)

Cos x = (81 + 225 - 68.89/270)

Cos x = 0.878

x = Cos ⁻¹ (0.878)

x = 28.6° (rounding to the next tenth)

2. Cos y = (8.3² + 15² - 9²/2 * 8.3 * 15)

Cos y = (68.89 + 225 - 81/249)

Cos y = 0.855

x = Cos ⁻¹ (0.855)

x = 31.2° (rounding to the next tenth)

3. z = 180 - 31.2 - 28.6

z = 120.2°

The correct answer is B. ∠X = 28.6°, ∠Y = 31.2°, ∠Z = 120.2°

4 0

3 years ago

Seed mixture X is 40 percent ryegrass and 60 percent bluegrass by weight; seed mixture Y is 25 percent ryegrass and 75.percent f

irinina [24]

Answer:

33%

Step-by-step explanation:

Assuming the weight of the mixture to be 100g**, then the weight of ryegrass in the mixture would be 30g.

Also, assume the weight mixture X used in the mixture is Xg, then the weight of mixture Y used in the mixture would be (100-X)g.

So we can now equate the parts of the ryegrass in the mixture as:

0.4X + 0.25(100-X) = 30

<=> 0.4X + 25 - 0.25X = 30

<=> 0.15X = 5

<=> X = 5/0.15 = 500/15 = 100/3

So the weight of mixture X as a percentage of the weight of the mixture

= (weight of X/weight of mixture) * 100%

= (100/3)/100 * 100%

= 33%

3 0

3 years ago

Find the probability that a point is chosen randomly inside the rectangle is in each given shape...

BaLLatris [955]

Answer:

0.25
0.85

Step-by-step explanation:

P (Triangle or Square) :

Area of Triangle + Area of Square / Area of Rectangle
1/2 x 3 x 4 (height is found by Pythagorean Theorem) + (3)² / 10 x 6
6 + 9 / 60
15/60
0.25

P (Not the square) :

Area of rectangle - Area of square / Area of rectangle
60 - 9 / 60
51/60
17/20
0.85

5 0

2 years ago

How do you estimate 586-321

aniked [119]

I would estimate about 240

4 0

3 years ago

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