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morpeh [17]
4 years ago
14

in a contest, each finalist must answer 4 questions correctly. each question is worth twice as much as the question before it. t

he fourth question is worth 2,000. how much was the first question worth?
Mathematics
1 answer:
Marina CMI [18]4 years ago
4 0

Answer:

500.

Step-by-step explanation:

Remember 4 x 5.

As 4 x 5 = 20 and if 4 x 50 = 200 then 4 x 500 would equal 2000.


( Side note: If you're doing 1000 or 2000 you can start with adding zeros then, but do not mix up them with some problems that have a zero in the product: Study this: (What equals 1000?) Student 1 says 2 x 5000 and Student 2 says 2 x 500. Which one is correct?)


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Suppose that the x-intercepts of the graph of y= f(x) are -8 and 1.
Nastasia [14]

Answer:

-4, 5

Step-by-step explanation:

y=f(x)

to find the x intercepts then y must be 0

0=f(x), solutions are x=-8, x=1

when 0=f(x+4), you simply  add 4 to each intercept's x coordinate

-8+4=-4

1+4=5

-4, 5

6 0
3 years ago
A car travels 65 km in 1 hour. what is its average speed in meters per second?
deff fn [24]
<span>Its speed is 18.05 m/s</span>
7 0
4 years ago
Cutiepies for you :)) and btw THANK YOU FOR HELPING ME
ozzi

1) 20*3/5, use the rule a*b/c=ab/c

\frac{20*3}{5} =\frac{60}{5} =12

D is your answer

2) 1/5*8 =1.6, and 1.6 as a fraction is 1\frac{3}{5}

Just gonna show real quick how I converted this decimal into a fraction...

  • Split the number into its whole number component and decimal component, 1.6=1+0.6. .6=6/10, and 1 is a whole number, and 6/10 reduced is 3/5. So your answer is 1\frac{3}{5}.

3) Two thirds of 93 is 62, and you can word this as 2/3*93=62.

4) Three-fifths of 30 is 18, like the other problem, 3/5*30=18.

5) She has one liter cotainers and each of them are 2/3rds full. So to find how much sports drink is in 5 of the containers, you have to do 5*2/3=3\frac{1}{3}. You multiply 2/3 times 5 because each container has 2/3rds, and there are five containers.

Hope this helps, have a BLESSED and wonderful day, as well as a safe one!

-Cutiepatutie ☺❀❤

6 0
3 years ago
Help will mark brainliest............
Nataliya [291]
The answer is 90, Because angle D is a 90 degree angle, and 180- 90=90, so the answer is 90.
7 0
3 years ago
Given the system of equations, what is the solution?<br><br> x + 3y = 5<br> x - 3y = -1
mr_godi [17]
\begin{cases}x+3y=5\\x-3y=-1 \end{cases}\\---------(+)\\\\x+x+3y-3y=5+(-1)\\\\2x=4\qquad|:2\\\\\boxed{x=2}\\\\\\\\x+3y=5\\\\2+3y=5\qquad|-2\\\\2+3y-2=5-2\\\\3y=3\qquad|:3\\\\\boxed{y=1}

The solution is (2; 1)
3 0
3 years ago
Read 2 more answers
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