How many significant digits are in 80,000

Answers

Answer 1
Answer: 2 because the equation can be reduced to: 8.0 x 10^4.
Answer 2
Answer: Actually it's 5 because there is no decimal space and if you only include 8 then that means the number is actually 8.

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Which of the following equations are equivalent? Select three options,2+x=5X+1=49+x=6X+(-4)=7-5+x=-2

4,079,043,806 = 4,000,000,000 + + 9,000,000 + 40,000 + + + 6

Answers

Answer:

8,088,083,812.

Step-by-step explanation:

Am getting the hang of this but I still need help so may I please get help with this equation -7a+6a^2-10

Answers

The factors are (a - 2) and (6a + 5) .If the expression is equal to zero, then 'a' can be 2, and 'a' can be -5/6 .
-7a+6a^2-10
I am assuming you are solving to get a zero, in which case a=2

Read the following paragraph and select the correct answer.For the night-wind has a dismal trick of wandering round and round a building of that sort, and moaning as it goes; and of trying, with its unseen hand, the windows and the doors; and seeking out some crevices by which to enter. And when it has got in; as one not finding what it seeks, whatever that may be, it wails and howls to issue forth again: and not content with stalking through the aisles, and gliding round and round the ...

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OK. Even though you only gave me part of the paragraph, I read that much, and I think I'm ready to select the correct answer now. What are the choices ?

8. What is the solution to the system? y = 1/2x, 2x + 3y = 28A) (2, 3)
B) (8, 4)
C) (7, 3.5)
D) (2, 14)

Answers

y=(1)/(2)x \n2x+3y=28 \n \n\hbox{substitute } (1)/(2)x \hbox{ for y in the second equation:} \n2x+3 ((1)/(2)x)=28 \n2x+(3)/(2)x=28 \ \ \ \ \  |* 2 \n4x+3x=56 \n7x=56 \ \ \ \ \ \ \ \ \ \ \ \ |/ 7 \nx=8 \n \ny=(1)/(2)x=(1)/(2) * 8=4 \n \n\boxed{(x,y)=(8,4)} \Leftarrow \hbox{answer B}

In a relay race, the probability of the Galaxy team winning is 22%. In another unrelated relay race, the probability of the Komets team winning is 47%. If the possibility of a tie is not an option, the probability of the Komets losing their race and the Galaxy winning theirs is ?%

Answers

Answer: There is 12% chance that Komets losing their race and the Galaxy winning theirs.

Step-by-step explanation:

Since we have given that

Probability that Galaxy team winning = 22%

Probability that Komets team winning = 47%

Probability that Komets team losing = 100-47=53%

We need to find the probability of the Komets losing and Galaxy winning their game.

So, Probability that Komets losing and Galaxy winning their game is given by

(22)/(100)* (53)/(100)\n\n=(1166)/(10000)\n\n=0.1166\n\n=0.12=12\%

Hence, there is 12% chance that Komets losing their race and the Galaxy winning theirs.

Fred bought seven adult and two student tickets for $16. John paid $7 for one adult and five student tickets. Individual costs are:

Answers

Answer:

Adult ticket=$2

Student ticket=$1

Step-by-step explanation:

Let the cost of one adult ticket be $x and the cost of one student ticket be $y

Fred bought 7 adult and 2 student tickets for$16.

So,

7x+2y=16. ...(1)

And,John paid $7 for one adult and 5 student tickets.

So,

x+5y=7. ...(2)

From ...(2),

x=7-5y

Substituting the value of x in equation ...(1),

7(7-5y)+2y=16

or,49-35y+2y=16

or,33y=33

or,y=1

Now, substituting the value of y in ...(2),

x=7-5=2

Thus,the cost of one adult ticket is $2 and the cost of one student ticket is $1.