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AnnZ [28]
3 years ago
12

What the decimal place for 423

Mathematics
1 answer:
Oksana_A [137]3 years ago
6 0
Four and 23 hundredths
4.23

I hope this helps! :D (Sorry if these are wrong.)
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Find k so that the distance from (–1, 1) to (2, k) is 5 units. k= k= *there are two solutions for 2*
dalvyx [7]

Answer:

k = -3

k =5

Step-by-step explanation:

d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\\d = 5\\(-1,1) =(x_1,y_1)\\(2,k)=(x_2,y_2)\\

5=\sqrt{\left(2-\left(-1\right)\right)^2+\left(k-1\right)^2}\\\\\mathrm{Square\:both\:sides}:\quad 25=k^2-2k+10\\25=k^2-2k+10\\\\\mathrm{Solve\:}\:25=k^2-2k+10:\\k^2-2k+10=25\\\\\mathrm{Subtract\:}25\mathrm{\:from\:both\:sides}\\k^2-2k+10-25=25-25\\k^2-2k-15=0\\\\\mathrm{Solve\:by\:factoring}\\\\\mathrm{Factor\:}k^2-2k-15:\quad \left(k+3\right)\left(k-5\right)\\\mathrm{Solve\:}\:k+3=0:\quad k=-3\\

\mathrm{Solve\:}\:k-5=0:\quad k=5\\\\k =5 , k=-3

7 0
3 years ago
Read 2 more answers
Joey earned $10 of every car he washed. If he earned $190 how many cars did he wash?
mars1129 [50]

Answer:

19

Step-by-step explanation:

190/10= 19

6 0
3 years ago
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ALL THE SMARTY PANTS PLS HELP ASAP. PLS DONT JUST SCROLL PAST IT AT LEAST TAKE A PEAK AT IT. IT COULD BE SOMETHING YOU CAN DO. J
ankoles [38]
The answer is 40. Would you like an explanation?
6 0
3 years ago
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Pls help me I'll give brainlest and points​
dmitriy555 [2]

Answer:

See below.

Step-by-step explanation:

a.

O is the origin, so its abscissa is 0. O: 0

The only point 4 units from O is A, so A: 4

Point C has a positive abscissa like A.

Points B and C have opposite abscissas. The only opposites are -3 and 3, but C is positive, and B is negative.

B: -3

C: 3

D: -4.5

E: -6

M = (4 + (-6))/2 = -1. M: -1

b.

OB = |0 - (-3)| = |3| = 3

DA = |-4.5 - 4| = |-8.5| = 8.5

4 0
3 years ago
What is the least common denominator of the rational expressions below? 1/x^2-5x+3/x^2+2x-35
Komok [63]

Here the denominators are quadratics , so we need to factorise them first

1/(x²-5x) +3/(x²+2x-35)

factorising x²-5x ,

here GCF is x, so taking x out we have

x(x-5)

factorising x²+2x-35 using AC method,

we find factors of -35 that add up to give 2

(x-5)(x+7)

Since we have x-5 common in both denominators, so lcd of the rational expression will be product of x(x-5)(x+7)

lcd is x(x-5)(x+7)

5 0
3 years ago
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