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lord [1]
4 years ago
5

I need help I try Photomath I didn’t help me .

Mathematics
2 answers:
kaheart [24]4 years ago
4 0

Answer:

8. 8.80

9. 90

Step-by-step explanation:

Question 8: Use the Pythagorean formula

DE² = DF²+EF²

EF² = DE² - DF²

= 16.2² - 13.6²

= 77.48

EF = √77.48 = 8.80  (Answer)

Question 9: Use the Cosine Rule

GI² = GH² +HI² - 2·GH·HI·Cos ∠GHI

= 60² + 42² - 2·60·42·Cos 123

= 3600 +1764 - (-2744.98)

= 8108.98

GI = √8108.98 = 90

bonufazy [111]4 years ago
3 0

Answer:

Step-by-step explanation:

8.

x=\sqrt{16.2^2-13.6^2} \\=\sqrt{(16.2-13.6)(16.2+13.6)} \\=\sqrt{2.6*29.8} \\=2\sqrt{1.3*14.9} \\=2\sqrt{19.37} \\\approx 8.80

9.

2*60*42*cos 123=60²+42²-GI²

GI²=3600+1764-5040 cos 123

GI²=5364-5040 cos 123

GI=90.05 (approx)

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Look at the following cases and determine whether the variable of interest has a binomial distribution. If it does, give the val
Ronch [10]
A distribution is binomial when their is only two available choices for the variable of interest.

In option A, X is not a binomial distribution because there are more than two diamonds in a card.

In option B, X is not a binomial distribution because there are more than two clubs in a card.

In option C, X is a binomial distribution because a woman in the sample can either be shorter than 64 inches or not.

In option D, X is a binomial distribution because a girl in the sample can either agree to a date or not.

In option E, X is a binomial distribution because a student in the sample can either be shorter than 64 inches or not.

4 0
4 years ago
The length of Ruben's rectangular living room is 9 meters and the distance between opposite
Misha Larkins [42]
P.Theorem says a^2 + b^2 = c^2
We know c^2 is 10, the diagonal length, and one leg we will call a^2 is 9
10^2 - 9^2 = b^2 (width)
Width is 4.36
8 0
2 years ago
Martin was selling tickets for a basketball game in a high school. He sold 1,250 tickets and the total amount collected for the
SVETLANKA909090 [29]

Answer:

x = number of students tickets = 1,000

y = number of adults tickets = 250

Step-by-step explanation:

Let

x = number of students tickets

y = number of adults tickets

x + y = 1,250 (1)

2x + 3y = 2,750 (2)

Multiply (1) by 2

x + y = 1,250 (1) * 2

2x + 2y = 2,500 (3)

2x + 3y = 2,750 (2)

Subtract (3) from (2) to eliminate x

3y - 2y = 2,750 - 2,500

y = 250

Substitute y = 250 into (1)

x + y = 1,250

x + 250 = 1,250

x = 1,250 - 250

x = 1,000

x = number of students tickets = 1,000

y = number of adults tickets = 250

3 0
3 years ago
Write a function that represents the situation. Your $840 annual bonus increases by 5% each year
Mazyrski [523]

Answer:

f(x)  = (840)\times (1.05)^{x} where f(x) is the bonus every year and x is in number of years

Step-by-step explanation:

The function that represents the situation where $840 annual bonus increases by 5% each year is given by

f(x)  = (840)\times (1.05)^{x} where f(x) is the bonus every year and x is in number of years

5 0
3 years ago
Please help me with this
yanalaym [24]
A
<em>Graph g</em>
The Rate of change is a little right triangle that is drawn from to to three parallel to the x axis and from about 45 to 60 on the y axis.
The square brackets means the the endpoints are included.
So the rate of change is \frac{\Delta y}{\Delta x} =  \frac{60-45}{3 - 2} = \text{15}
<em>Graph h</em>
\text{rate of change = }  \frac{\Delta y}{\Delta x} =  \frac{35 - 20}{3 - 2} = 15
<em>Graph f</em>
\text{rate of change = } \frac{\Delta y}{\Delta x} = \frac{35 - 10}{3 - 2} = 25
<em>Conclusion</em>
This is very hard to call. There are two the same (two of them being g and h) It's a graph and so it is nearly impossible to differentiate. I would say the statement is false but be prepared to get it wrong. Draw g and h for yourself and see what you think. If you get the two of them different, go with your answer.

B
Another tough one to call. f and g cross at four. It is true f and h. The value of f(4) > h(4). Again, if you do this and disagree, then go with your answer. Mine is false.

C
It is very difficult to reproduce this graph on desmos so that you get a clear cut answer from the graph. I cheated and used a calculator. f(x) is over 6000 and h(x) = 168. This statement is also not true.

D
Here again this is false. g's rate of change is a constant. Eventually f will have the same slope as bitcoin's value which is in the range of about 6000. So this statement is false as well.

E
See the comment about F in the answer for D. This statement is true.

F
This is definitely a true statement. 

Conclusion or answer
E and F <<<<<<< True should be checked.

I would check the first two statements with a calculator. I did them with a graph. 
8 0
3 years ago
Read 2 more answers
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