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anygoal [31]
3 years ago
13

Help me pls guys/girls

Mathematics
1 answer:
Kamila [148]3 years ago
5 0

Answer:

 V = 9.828 * 10^7 mm^3

a= 9.828  b = 7

9,827,000  mm^3

Step-by-step explanation:

The volume of a rectangular prism is

V = l*w*h

V = 1.2 *10^3  * 3.9*10^2  * 2.1*10^2

We multiply the numbers out front and add the exponents  (the powers of 10)

V = (1.2*3.9*2.1)  * 10^(3+2+2)

 V = 9.828 * 10^7 mm^3

Rewriting this in standard form means moving the decimal 7 places to the left.  Since there is not enough places add zeros

9,827,000  mm^3

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A bag contains 31 red​ blocks, 47 green​ blocks, 23 yellow​ blocks, and 24 purple blocks. You pick one block from the bag at ran
svp [43]

Answer:

0.07072

Step-by-step explanation:

Red Blocks= 31

Green Blocks= 47

Yellow blocks = 23

Purple blocks= 24

Total= 31+47+23+24= 125

P(Yellow) = 23/125

P(Purple)=24/125

NOTE: AND (X), OR (+)

​P(yellow yellow or purple purple​)

= P(Y and Y) + P(P and P)

=(23/125 X 23/125) + (24/125 X 24/125)

=529/15625 + 576/15625

=1105/15625

=221/3125

=0.07072

Therefore:

Probability of Picking Yellow Yellow or Purple Purple is 0.07072.

4 0
3 years ago
300 is 60% of what number?
abruzzese [7]

Answer:

500

Step-by-step explanation:

5 0
3 years ago
56 thousandths - 23 thousandths=how many hundredths and thousandths?
alexandr1967 [171]
<span>56 thousandths - 23 thousandths=how many hundredths and thousandths?
Let us first solve this and get the difference of the given numbers.
=> 56 thousandths = 0.056 (there are 5 hundredths and 6 thousandths)
=> 23 thousandths = 0.023 (there are 2 hundredths and 3 thousandths)
=> 0.056 – 0.023 = 0.033 is the answer
there 3 hundredths and 3 thousandths value left after subtracting the given 2 decimal numbers.</span>



5 0
4 years ago
The lengths of text messages are normally distributed with a population standard deviation of 3 characters and an unknown popula
slava [35]

Answer:

25.4, 28.6

Step-by-step explanation:

Given parameters

sample size, n = 24

sample mean, X = 27

population standard deviation, s = 3

critical value, Zα/2, where α = 0.01

99% confidence Interval, CI, is given as follows

CI = X ± Zα/2 × (s/√n)

Zα/2 = Z0.01/2 = Z0.005 = 2.576

CI = 27 ± 2.576 × (3/√24)

   = (25.42 ,28.57)

5 0
3 years ago
HELP PLS ILL GIVE BRAINLIEDY<br><br> NO LINKS
const2013 [10]

Answer:

70

81

95

A: 46%

Step-by-step explanation:

29+41=70

135-54=81

205-110=95

A: 95 out of 205.

Divide 95 by 205.

\frac{19}{41} or 0.46341...

Switch to % and Round.

46%

I actually have no idea what b and c mean so good luck

7 0
3 years ago
Read 2 more answers
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