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Lapatulllka [165]
3 years ago
5

What 2 ways show how to round 134 ? 100 200 30 140 130

Mathematics
2 answers:
professor190 [17]3 years ago
5 0

Answer:

100 and 130

Step-by-step explanation:

the number is not 150 or above so you have to round downward if you are rounding by 100s and it is not 135 or above so you have to round down to 130 if you are going by tens

Nikitich [7]3 years ago
4 0

Answer:

Step-by-step explanation:

round to tens=130

round to hundreds=100

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PLZ HELP OR I FAIL MY TEST
Volgvan

Answer:

time upstream=24/8=3 hours

time downstream=24/12=2 hours

Step-by-step explanation:

If R*T=D, and R is speed + or - current, how can you find the rate without the time, and how can you find the time without the rate?

THE KEY WAS WHEN WE WERE TOLD THAT IT TAKES ONE HOUR LONGER TO GO UPSTREAM THAN DOWNSTREAM BECAUSE T=D/R AND WE ARE TOLD THAT:

D/R(Upstream) minus 1 equals D/R (DOWNSTREAM)



Let x=rate of current

distance(d)=rate(r) times time(t) or d=rt or t=d/r

distance upstream=distance downstream=24 mi

rate upstream=10-x

rate downstream=10+x

time upstream=(distance upstream)/(rate upstream)=24/(10-x)

time downstream=(distance downstream)/(rate downstream)=24/(10+x)

Now, we are told that time upstream minus one hour equals time downstream. So our equation to solve is:

24/(10-x)-1=24/(10+x) Multiply both sides by (10-x)(10+x)

24(10+x)(10-x)/(10-x)-1(10-x)(10+x)=24(10-x)/(10+x)/(10+x) clear fractions


24(10+x)-(10-x)(10+x)=24(10-x) clear parens

240+24x-100-10x+10x+x^2=240-24x subtract 240 from and add 24x to both sides

240-240+24x+24x-100+x^2=240-240-24x+24x collect like terms

x^2+48x-100=0 ----------------quadratic equation in standard form

This equation can be factored:

(x+50)(x-2)=0

x=-50 mph----------------discount the negative value for speed

and

x=2 mph----------------------speed of the current

CK

10-x=10-2= 8 mph -----------------------speed upstream

10+x=10+2=12 mph--------------------------speed downstream

time upstream=24/8=3 hours

time downstream=24/12=2 hours

so 3-2=1----takes 1 hour longer upstream

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3 years ago
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Alenkinab [10]

Answer:

43.35

Step-by-step explanation:

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3 years ago
What is the explict formula for this sequence 5, 10, 20, 40, 80, 160, ...
Tcecarenko [31]

Step-by-step explanation:

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we mark the Nth as a(N), then:

a(N)=2a(N-1)

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2 years ago
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19x^3 + (14x + 4x^3) =
Brrunno [24]
19x³ + (14x + 4x³)=
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