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Mumz [18]
4 years ago
10

Can someone plzz help me this proofing thing on this question.

Mathematics
1 answer:
jok3333 [9.3K]4 years ago
3 0
\angle BAC \cong \angle DCA  \qquad
  alternate interior angles are congruent in a transverse of parallel lines AB and CD 
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The ratio of trumpet players to tuba players at a high school is 5:2 Which statement is true?
marysya [2.9K]
The given ratio is 5 trumpet players : 2 tuba players.

A. Since the ratio is 5:2, at the smallest ratio there would be 7 players total (5+2). So tuba players would be 2/7, not 2/5.

B. If there are 7 total players, and the ratio is 5 trumpets : 2 tubas, then trumpets are in fact 2.5 times the number of tuba players (2 tubas *2.5 = 5 trumpets).

C. The ratio is 5 trumpet players : 2 tuba players, not 2 trumpet players for every 5 tuba players.

D. The ratio of tubas to total number of tubas and trumpets is \frac{2tuba}{7total}= \frac{t}{100total} \\ t=28.57 tubas
5 0
4 years ago
A hypotenuse of a right triangle is 52 in. One leg of the triangle is 8in. more than twice the length of the other. What is the
DaniilM [7]

c=52, a=2b+8

<span>
Pythagorean Theorem = a^2+b^2=c^2</span>

<span>
(2b+8)^2+b^2=52^2</span>

<span>
<span> 4b^2+32b+64+b^2=2704</span></span>

<span><span>
5b^2+32b-2640=0 </span></span>

<span>
b=20 </span>

a= 2(20)+8 = 48

<span>48+20+52 = 120</span>


3 0
3 years ago
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What is the exponential form of the following expression<br> (-5)(-5)(-5) •c•c•c
Vsevolod [243]

Answer:

-5c^3

Step-by-step explanation:

There are 3 -5's and 3 c's. Because we are multiplying the c's by the product of the fives it is. -5c to the power of 3

5 0
3 years ago
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Factorize 2x² - 1 = 0<br><br> Thanks!
erma4kov [3.2K]

2 x2-1,. 2x2=1 or all in the photo any problem in question then ask me

7 0
3 years ago
A store has 40 bags of potato
mixas84 [53]

Answer:

The percentage of the bags of the potato chips that are not cheddar-flavored is 25%. This is because there are 10 bags that are not cheddar-flavored and this divided by 40 bags, which is the total bags of the potato chips multiply by 100% gives 25%

Step-by-step explanation:

If there are 40 bags of potato chips and 30 are cheddar flavored, Then

40 - 30 = 10 bags are not cheddar flavored

Since the total bags is 40,

percentage potato chips that are not cheddar-flavored = 10/40 × 100%

= 25%

6 0
4 years ago
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