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3 years ago

Select the correct answer.

Mathematics

1 answer:

Anna007 [38]3 years ago

3 0

Answer:

C) 8/9

Step-by-step explanation:

As 1/9=0.1 repeated, then 1/9*8=0.1 repeated * 8 = 8/9=0.8 repeated

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In the activity, Heavy Flying, we looked at constraints for transporting packages from Careful Calculators and Charlie's

Gala2k [10]

Answer: 500 chicken feed and 200 careful calculators

Step-by-step explanation:

2x+3y=1,600

40x+50y=30,000

those are your first two equations

your first matrix equation for A is 2, 3,40,50 and B is 1,600 and 30,000 when you enter those in your calculator and 500 and 200 should be your result.

5 0

3 years ago

Paul bought a student discount card for the bus. The card allows him to buy daily bus passes for $1.50.

Marta_Voda [28]

Answer:

Step-by-step explanation:

If you do 13x1.50= 19.5

28.50 - 19.5 = 9

7 0

3 years ago

I think c is the right answer am I correct ?

blagie [28]

Answer: yes

-5 is not greater than 4

-5

Step-by-step explanation:

6 0

2 years ago

PLS HELPP MEE !!

Galina-37 [17]

The Answer is -0.985

I just took the test.

7 0

3 years ago

Suppose a ball is dropped from a height of 16 feet. Each time it drops h feet, it rebounds 0.81h feet. Find the total distance t

Roman55 [17]

When the ball is first dropped, it falls $h$ feet. On the first bounce, it rebounds $0.81h$ feet, which means on the second "drop" it must travel $0.81h$ feet again. On the second bounce, the ball rebounds $0.81(0.81h)=0.81^2h$ feet, and on the third drop falls the same distance. And so on.

So there are two directions to track:

$\text{downward: }\displaystyle h+0.81h+0.81^2h+\cdots=\sum_{n=0}^\infty 0.81^nh$
$\text{upward: }\displaystyle 0.81h+0.81^2h+\cdots=\sum_{n=1}^\infty 0.81^nh$

The total distance is the sum of these two:

$\displaystyle\sum_{n=0}^\infty 0.81^nh+\sum_{n=1}^\infty 0.81^nh=h+2h\sum_{n=1}^\infty 0.81^n$

Recall that for an infinite geometric sum, you have

$\displaystyle\sum_{n=0}^\infty r^n=1+\sum_{n=1}^\infty r^n=\frac1{1-r}$

provided that $|r|$ . So the total distance traveled by the ball is

$h+2h\left(\dfrac1{1-0.81}-1\right)\approx9.53h$

Starting with a height of $h=16$ means the total distance is about 152.42 ft.

4 0

3 years ago