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DaniilM [7]
3 years ago
11

3x²-30x+9=0 PLEASE HELP COMPLETING THE SQUARE WILL MARK BRAINLIEST

Mathematics
1 answer:
nlexa [21]3 years ago
7 0

Answer:

i have done the cutting of x's exponent

Step-by-step explanation:

= 3x - 30+9 =0

= 3x - 21 =0

= 3x= 21

= x = 21/3

x= 7 this the answer

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If a scale is 1:250,000 and the distance is 8.5cm on the map what's the actual distance
timurjin [86]
8.5cm · 250,000 = 2,125,000cm

1m = 100cm therefore 1cm = 0.01m

2,125,000cm = 2,125,000 · 0.01 = 21,250m

1km = 1,000m therefore 1m = 0.001km

21,250m = 21,250 · 0.001km = 21.25km

Answer: 21,250m = 21,25km
7 0
3 years ago
Estimate the answer to<br> 64 x 186<br> 21 x 98
Vikentia [17]

Answer:

I am a bit confused on what the question is asking. But 64*186= 11904 and if we were to round that number it would be 12000. 21*98=2058 and that number rounded is 2100 or just 2000. (hope this is right and helps :D)

Step-by-step explanation:

8 0
2 years ago
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A white rhinoceros weighs about 2 ½ tons. How many pounds does the white rhinoceros weigh?
steposvetlana [31]

Answer:

5000 pounds

Step-by-step explanation:

1 ton = 2000 pounds

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3 0
3 years ago
How do i write 12.009 in a word form?
tia_tia [17]
Your answer will be twelve and nine thousandths because in place value decimals are like tenths, hundredths, thousandths. In place value for regular numbers are ones, tens, hundreds and so on. So, when you have 12.009, you are going to separate the decimals with the numbers. Then, write down the number in words which would be twelve. Now, go to the decimal and write that down, which is 9 thousandths. Finally, combine the both of them to get: twelve and nine thousandths.

Hope this helps :) 
and good luck

5 0
3 years ago
4. Find the value of the expression below for r=4 and t=2.
Katen [24]

Answer:

(a) 9

Step-by-step explanation:

\sf t^3 - r + 20 \div  r

substitute r = 4, t = 2

\sf (2)^3 - 4 + 20 \div 4

simplify

\sf (2)^3 - 4 + 5

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\sf 8 - 4 + 5

simplify

\sf 9

5 0
1 year ago
Read 2 more answers
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