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Pavel [41]
3 years ago
7

How do you know when to use the Estimation strategy vs the Guess and Check strategy ?​

Mathematics
1 answer:
Grace [21]3 years ago
6 0
The guessing strategy only works when you don’t u don’t understand a question so I advise you NOT to do it , only when it’s necessary but the Estimation strategy works when you don’t have a any but a answer where theirs decimals or a answer that is close to one another and can be rounded
You might be interested in
Assuming x and the number below are measured in degrees find re value of x and find the unknown angle measure in each triangle.
lorasvet [3.4K]

Answer:

x = 16°

4x-7 = 57°

3x+4 = 52°

5x-9 = 71°

Step-by-step explanation:

All angles of any triangle add up to 180°, so if we add up each equation and set it equal to 180 we can find x.

4x-7 + 3x+4 + 5x-9 = 180

Simplify by combining like terms.

12x-12 = 180

Then, do inverse operations to find x.

12x=192

x=16

Now that we found x, we can substitute 16 for x in each angle equation in the triangle.

4(16)-7 = 57

3(16)+4 = 52

5(16)-9 = 71

8 0
2 years ago
Yi's average for her first 3 tests is 88. what musit she score on her last test to bring her average up to 90
timofeeve [1]
Her average now is 88.
She needs to bring it up to a 90.

Let's start with if she gets a 90.
88 + 90 = 178
178/2 = 89
A 90 would only get her an average of 89, so you need to go higher.

88 + 91 = 179
179/2 = 89.5

88 + 92 = 180
180/2 = 90


She must get at least a 92 to get an average of 90.
6 0
4 years ago
HELP I REALLY NEED SLMEONER TO DO THIS IS HAVE NO IDEA HOW, please do all and show work or as many questions as u can. WILL MARK
Wewaii [24]

It looks like you are good up to problem 4 so I will start there. I believe this is practice worksheet featuring the pyth. theorem. The pyth. theorem is used to find the length of sides in a right triangle notable the hypotenuse (side opposite of 90 degree angle).

4. The monitor is a rectangle but that does not stop you from constructing a right triangle. The smaller lengths are 16 in and 12 in respectively. The hypotenuse of the triangle is the diagonal of the rectangle. To find the length use the pyth. theorem.

diagonal^2 = 16^2+12^2

diagonal = 20 in

7. You know the speeds of both trains and the time spend traveling. You know they are traveling at a 90 degree angle so you can use pyth. theorem. But wait... you need to find the distances traveled for both trains. You can find that though because speed x time = distance.

50mph x 3hrs = 150mi

40mph x 3hrs = 120mi

The distance between the trains after 3 hours is the hypotenuse which can be determined by pyth. theorem.

distance^2 = 150^2+120^2

distance = 192 mi approx.

8. First find length of one piece of wiring. Use pyth theorem. Actually 3,4,5 pyth. triplet in which 5 is the hypotenuse. So you have 5 ft for the length of one piece of wiring. How many pieces of wiring do you need? Well, each tree needs 3 pieces and there are 6 trees so you need 18 pieces.

18 x 5 = 90 ft of wiring

From the work I see, you have a great understanding of the pyth. theorem. Keep it up!

7 0
4 years ago
Elena has 12 pieces of banana bread. She gives an equal amount of banana bread to five friends. How many pieces of banana bread
lina2011 [118]

<span>Since Elena has 12 bananas and 5 friends we divide 12 by 5 and we will get 2.4 , 2.4 in mixed fraction form is 2 and 2/5. </span>

<span>Thus Elena gives 2 and 2/5 banana bread  to his friends.</span>

Hope this answer will be a good h<span>elp for you.</span>

4 0
4 years ago
What would this be sumed up in standard form?
Alisiya [41]

6x^5 - 5x^4 + 6x^3 - x^2 + 12x - 31

4 0
3 years ago
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