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guapka [62]
3 years ago
6

PLEASE HELP!!!!

Mathematics
1 answer:
juin [17]3 years ago
4 0

\displaystyle \sum_{n=1}^{5} (-5 -4(n-1))

\displaystyle =\sum_{n=1}^{5} (-1-4n)

Answer: the summation from n equals one to 5 of quantity negative 1 minus 4 times n

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The ratio of tickets sold to see the incredible musical wicked to tickets sold to see Cats is 11 to 7 if there were 2700 total t
tia_tia [17]
Use algebra to set up 2 equations.

Assign c as number of tickets for CATS and w for number of tickets of WICKED

c + w = 2700

c / w = 7 / 11

Then solve for one of them in the first equation

c = 2700 - w

Then put this value for c into the 2nd equation

(2700 - w) / w = 7 / 11

Now cross multiply the numerator by denominator of both numerator and denominator pairs

7w = 11 x (2700 - w)
7w = 29700 - 11w

Now solve for w

7w = 26700 - 11w

Add +11w to both sides

18w = 29700

Now divide by 18 on both sides

w = 1650

Then c is the remainder of that ... 2700 - 1650 = 1050

You can also check because 7 / 11 = 1050 / 1650



8 0
3 years ago
Make a the subject of a2+b2=c2
wel

Answer:

a=\sqrt{c^2-b^2

⇒ a=\sqrt{(c+b)(c-b)}        [Factorized form]

Step-by-step explanation:

Given expression:

a^2+b^2=c^2

We need to make a the subject.

In order to do that we need to solve the expression for a in terms of b and c

We have,

a^2+b^2=c^2

Subtracting both sides by b^2

a^2+b^2-b^2=c^2-b^2

a^2=c^2-b^2

Taking square root both sides in order to remove square of a

\sqrt{a^2}=\sqrt{c^2-b^2}

a=\sqrt{c^2-b^2

The difference of squares can be factorized and written  as:

a=\sqrt{(c+b)(c-b)}    [difference of squares x^2-y^2=(x+y)(x-y) ]

4 0
3 years ago
The angle of depression from the basketball hoop to Clairs eyes is 9.2degrees. The vertical distance from the ground to Claires
Norma-Jean [14]
X - difference between the height of the basketball hoop and the vertical distance from the ground to Clair´s eyes.
Using T O A:
tan (9.2°) = x / 22 ft
x = tan (9.2°) · 22 ft
x = 0.162 · 22 ft 
x = 3.564 ft
The height of the basketball hoop is:
h = 5.6 + 3.564 = 9.164 feet
8 0
2 years ago
Read 2 more answers
A coin is biased to display heads 75% of the time . It’s tossed 20times and the out comes are recorded the most improbable simul
Sergio [31]

Multiply the number of tosses by the percent of heads:

20 tosses x 0.75 = 15

The answer is 15.

7 0
2 years ago
What is the value of x? <br> A:12 <br><br> B:15<br><br> C: 6<br><br> D: 30
const2013 [10]

Answer: C) 6

Step-by-step explanation: the smaller triangle is half of 60. 5x means 5 x 6. Which is 30. 30 is half of 60, so that's your answer

3 0
3 years ago
Read 2 more answers
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