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Georgia [21]
2 years ago
7

Solve the equation x2 18x + 21 = -3x to the nearest tenth.

Mathematics
1 answer:
Bumek [7]2 years ago
7 0

Answer:

1x=-29

2x=-1

Step-by-step explanation:

i hope its useful.

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Austin bought 7 pounds of rice for $3.
Andrei [34K]
1.) Austin would get 2.3 pounds per dollar.

2.) A customer would get 15 minutes of bike time per dollar.
5 0
3 years ago
Solve the equation: -2/5 n = -30<br> A. n=-75<br> B. n=-12<br> C. n=12<br> D. n=75
OLEGan [10]
Assuming your equation is: -2/5n = -30

-2/5n = -30    <- We get rid of the "/5n" by multiplying each side by 5n
-2 = -30 * 5n
-2 = -150n
-1 = -75n
75n = 1

But this doesn't match up with any of your answers, so if you wouldn't mind giving me the equation again, i'll work it out

6 0
4 years ago
Read 2 more answers
Canada has a population of 1/10 as large as the United States and Canada population is about 32 million about how many people li
Jlenok [28]

Answer:

Step-by-step explanation: If Canada(C) is 32,000,000 and America is A and C x 10 = A then 32,000,000 x 10 = A

And to multiply any whole number by 10 you just add a zero to the end so

320,000,000  is the answer which is pronounced "Three hundred twenty million" And there is 7 zeros in the answer

hope this helps mark me brainliest

6 0
3 years ago
Evaluate 4<br> M-n if m= -7 and n = 2.
gregori [183]

Answer:

-30

Step-by-step explanation:

I'm assuming the equation is 4m-n. If it is not please tell me.

If we know the values of m and n, we can just substitute inside the expression.

4(-7) - 2\\\\-28 - 2\\\\-30

Hope this helped!

7 0
3 years ago
Simplify the square root of -121?
poizon [28]

Answer:

11<em>i</em>

Step-by-step explanation:

first you have to get a postive root.

\sqrt{-121} \\ \sqrt{-1}  \sqrt{121} \\

then you solve the square roots from there, keeping in mind the imaginary number answer to the square root of -1, <em>i</em>.

\sqrt{-1} = i\\ \sqrt{121} =11\\ 11i

8 0
3 years ago
Read 2 more answers
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