Can 1 be an additive identity?

Answers

Answer 1

Answer: Hey there, Valensolar! I would usually explain my answer, but in this case, I cant use any of the symbols required. But the answer is no. The number 1 can NOT be an additive identity. I hope this helps! :D

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Runways A and B are parallel to each other and perpendicular to Runway C. If Runway D makes a 35 degree angle with Runway Aaa show in the diagram, what is the measure of the angle marked in the diagram between Runways C and D?

Answers

Answer:

55°

Step-by-step explanation:

Draw the diagram according to the given data (see attached diagram).

In this diagram,

line AC is runway A;
line BD is runway B;
line AB is runway C.

Note that ∠GCH=35°

Angles GCH and CDI are corresponding angles. By corresponding angles postulate, angles GCH and CDI are congruent.

Angles CDI and BDE are vertical angles, so angles CDI and BDE are congruent as vertical angles.

Consider right triangle BDE. The sum of two acute angles of the right triangle is 90°, so

m∠BED=90°-m∠BDE

m∠BED=90°-35°=55°

Given B is the midpoint of AC, what is AC ?

A. 54
B. 27
C. 6
D. 18

Answers

A. 54

The fact that B is the midpoint means that AB = BC so you can set up the equation of
4x+3 = 3x+9

Then solve for x by subtracting 3 from the left and 3x from the right to get

X=6

Finally, plug that back in to your line and solve for the total value

4(6) + 3 + 3(6) +9 = 54

A MILKMAN SOLD TWO OF HIS BUFFALOES FOR RS.20,000. EACH ON ONE HE MADE A GAIN OF 5% AND ON THE OTHER A LOSS OF 10%. FIND HIS OVERALL GAIN OR LOSS.

Answers

Selling price of 1st buffalo +Selling price of 2nd buffalo=20000
profit for 1st buffalo=0.05 of cost price of 1st buffalo
loss for 2nd buffalo=0.1 of cost price of 2nd buffalo
1.05(cost price of 1st buffalo)+(0.9)cost price of 2nd buffalo=20000
the buffalo must cost must be same = x (say)
1.05x+0.9x=20000
1.95x=20000
x=10256.41
2x=20512.82
profit=20512.82-20000=512.82
profit %=2.56410 %

At an animal shelter, there are 15 dogs, 12 cats, 3 snakes, and 5 parakeets. What percent less parakeets are there than dogs?

Answers

Answer: The required percentage is 28.57%.

Step-by-step explanation: Given that at an animal shelter, there are 15 dogs, 12 cats, 3 snakes, and 5 parakeets.

We are to find the percentage by which parakeets are less than dogs.

From the given information, the number of dogs is

$n_d=15,$

the number of parakeets is

$n_p=5.$

And, the total number of animals is

$n=15+1+3+5=35.$

So, the difference of the number of dogs and parakeets is

$N=n_d-n_p=15-5=10.$

Therefore, the percentage by which parakeets are less than dogs is

$(N)/(n)*100\%=(10)/(35)*100\%=(200)/(7)\%=28.57\%.$

Thus, the required percentage is 28.57%.

There are 35 total animals and 5 parakeets and 15 dogs. 15/35*100 is there percentage of dogs and 5/25*100 is the percentage of parakeets. (15-5)/35*100 is the percentage difference. Simplifying, this equals 28.571%

Vicki puts 10 books on a shelf. The 10 books take up 28 cm. What is the mean (average) thickness of her books? Can I have it worked out as well plz? I really need to understand it.

Answers

Average thickness of book = Total thickness/mo. of books
= 28 cm/ 10
= 2.8 cm
Thus, on average, each book has 2.8 cm thickness.

If the ten books are 28cm thick then the average thickness is 28 (the total thickness) divided by 10 (the number of books).

28cm divided by 10 is 2.8cm.

So the average thickness is 2.8cm!

What's 9+10 and how can it equal 21

Answers

It CAN'T equal 21, since 9+10=19

BUT, if the 9 was changed to like, 11 - Then it would = 21, or if the 10 was changed to a 12, it would make 21 also,

Answer:

It cant equal 21 its just a super old meme people think is funny...the answers 19 btw :p

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