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sveta [45]
3 years ago
15

PLEASE ANSWER QUICKLY

Mathematics
1 answer:
skelet666 [1.2K]3 years ago
5 0
C is the answer ! Hope it helps
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Write the number in standard notation. 9x 10^-4
max2010maxim [7]

Answer:

0.0009

Step-by-step explanation:

9*10⁻⁴ = 0.0009

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Help needed ASAP will give brainliest and 5 STARS RATE
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the first one

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Evaluate: 39/y + 5y if x = 3 and y = 5.
Lelu [443]

<em>answer = 32.8 \\ solution \\  \frac{39}{y}  + 5y \\  =  \frac{39}{5}  + 5 \times 5 \\  =  \frac{39}{5}  + 25 \\  =  \frac{39 + 25 \times 5}{5}  \\  =  \frac{39 + 125}{5}  \\  =  \frac{164}{5}  \\  = 32.8 \\ hope \: it \: helps</em>

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3 years ago
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1=x+15 so I’m stuck on this
AlekseyPX

Answer:

-14

Step-by-step explanation:

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3 years ago
13Given that log (xy) 3 and log, (x2y3)4Calculate the values of log, x and log, y
Nonamiya [84]
If \ log_q(xy)=3, \ then \ log_qx+log_qy=3 \ . . . . . \ (1) \\ If \ log_q(x^2y^3)=4, \ then \ log_qx^2+log_qy^3=2log_qx+3log_qy=4 \ . . . . . \ (2) \\ From \ (1), \ log_qx=3-log_qy \\ substituting \ for \ log_qx \ in \ (2) \ gives: \\ 2(3-log_qy)+3log_qy=4 \\ 6-2log_qy+3log_qy=4 \\  \\ Therefore, \ log_qy=4-6=-2; \ and \\ log_qx=3-log_qy=3-(-2)=3+2=5
8 0
3 years ago
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