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Amanda [17]
3 years ago
15

Plz help don't understand 1 thru 4------Don't mind the other writing------

Mathematics
1 answer:
iogann1982 [59]3 years ago
6 0
Hi there friend, I hope this helps explain a little better. Let me know if you have questions.
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1.688 × 10⁴ = write in standard format​
Neporo4naja [7]

Answer

16880

Step-by-step explanation:

10x10x10x10=10,000

1.688x10,000=16880

hope that helps

7 0
3 years ago
Read 2 more answers
I need help on these questions
Kay [80]
1.) 10c - 12 = -2
-2C is the temperature in Tallahassee

2.) 48 kilometers divided the average of 3.2 Km
48÷3.2=15
15 is the value of D

3.) You seem to have 3 =D

4.) I'm pretty sure you just add \frac{1}{4} +  \frac{1}{3} =  \frac{7}{12}
7/12 is your answer

----------------------------------------------------------------------------------------------------------------
Thank You! Have a great day =D
and please correct me if wrong =D
7 0
3 years ago
Distance between the points
Harman [31]
To understand the distance formula, you first need to understand the Pythagorean Theorem. For a refresher, the theorem states that the square of the legs of a right triangle is equal to the the square of its hypotenuse (the side opposite the right angle), or in symbols:

a^2+b^2=c^2, where a and b are the lengths of the legs, and c is the length of the hypotenuse. In the context of the x-y plane, the legs of the triangle correspond to separate x and y values on the plane, and the hypotenuse corresponds to a straight line between two points on that plane.

To find the distance between the points you've listed, (2√5,4) and (1,2√3), we'll first need to find the "legs" of the triangle. To find the length of the x leg, we'll just need the distance between the x values of the points, which we find to be 2√5-1. We do the same for the y component, which ends up being 4-2√3. Now that we have our legs, we're ready to find the hypotenuse - or the distance.

Going back to Pythagorus's equation, we have:

(2 \sqrt{5}-1)^{2}+(4-2 \sqrt{3})^{2}=d^2

where d, the hypotenuse of the triangle, means "distance."

To solve for d, we take the square root of both sides:

d= \sqrt{(2 \sqrt{5}-1)^2+(4-2 \sqrt{3} )^2}

And from there, all that's left to do is solve the right side of the equation, which just ends up being rote calculation.

Edit: I'll go through the steps of that calculation here. We'll start by expanding each of the squared terms inside the radical:

(2 \sqrt{5}-1)^2=(2 \sqrt{5}-1)(2 \sqrt{5}-1)=(2 \sqrt{5}-1)2 \sqrt{5}-(2 \sqrt{5}-1)
=(2 \sqrt{5})^2-2 \sqrt{5}-2 \sqrt{5}+1=20-4\sqrt{5}+1

(4-2\sqrt{3})^2=(4-2\sqrt{3})(4-2\sqrt{3})=(4-2\sqrt{3})4-(4-2\sqrt{3})2\sqrt{3}
=16-8\sqrt{3}-8\sqrt{3}+(2\sqrt{3})^2=16-16\sqrt{3}+12

Putting those values back under the radical:

\sqrt{20-4\sqrt{5}+1+16-16\sqrt{3}+12}

Collecting constants:

\sqrt{49-4\sqrt{5}-16\sqrt{3}}

If you wanted an exact answer, this messy-looking thing would be it, and you can verify those results on WolframAlpha if you'd like. If you want an approximation, just enter that expression in to the online calculator of your choice, and it should give out the value of approx. <span>3.51325.</span>

In general, if you want to solve for the distance between two points (y_{1},x_{1}) and (y_{2},x_{2}), the formula is:

d= \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}
4 0
3 years ago
Barbara claims that her horse can do simple addition problems. She showed her horse eight different cards with simple addition p
Arturiano [62]

Answer:

Barbara's horse can add

Step-by-step explanation:

To test if the horse could add, Eric he tried to calculate experimentally the probability that the horse had guessed the 8 answers.



If we call "trial" the action of throwing 8 coins and count the number of tails obtained, then eric made 53 trials.


During each trial, 8 events could have occurred:


Get 1, 2, 3, 4, 5, 6, 7 or 8 tails.


The plot of points obtained by Eric shows the frequency in which each of these 8 events occurred during the 53 trials.


The fact that the point diagram shows only one point on event 8, means that it occurred only once during the 53 trials, and compared to the other 7 events, this was the one with a lower frequency (the one that obtained the the highest frequency was the 4-tailed one, with 11 points).


This means that it is very unlikely to get 8 queues when casting 8 coins.


Therefore it also means that it is unlikely that Barbara's horse has guessed the 8 answers.

So, curiously, Barbara's horse maybe knows how to add

6 0
3 years ago
Read 2 more answers
Sam has
Nana76 [90]

Answer: 72

Step-by-step explanation: 8x9=72

6 0
3 years ago
Read 2 more answers
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