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____ [38]
3 years ago
11

Which of the following options have the same value as 30\%30%30, percent of 818181?

Mathematics
1 answer:
Nataly_w [17]3 years ago
6 0

Answer:

Option B is correct = 0.3 \times 81

Step-by-step explanation:

<u>The complete question is:</u> Which of the following options have the same value as 30% of 81?

Group of choices is:

(A) \frac{30}{100}\times 81 \times 100

(B) 0.3 \times 81

(C) 0.03 \times 81

(D) \frac{3}{10}\times 81 \times 10

(E) 30 \times 81

Now, the expression given to us is 30% of 81.

Simplifying the above expression we get;

   30% of 81  =  \frac{30}{100} \times 81

                     =  \frac{3}{10} \times 81  =  0.3 \times 81

Now, we will solve each of the given options and then see which option matches with our calculation.

Option (A) is given;

\frac{30}{100}\times 81 \times 100  =  30 \times 81

This doesn't match with our answer, so this option is not correct.

Option (B) is given;

0.3 \times 81  

<u><em>This matches with our answer, so this option is correct.</em></u>

Option (C) is given;

0.03 \times 81  

This doesn't match with our answer, so this option is not correct.

Option (D) is given;

\frac{3}{10}\times 81 \times 10  =  3 \times 81

This doesn't match with our answer, so this option is not correct.

Option (E) is given;

30 \times 81  

This doesn't match with our answer, so this option is not correct.

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Evaluate the expression below when x = -2.<br><br> x2 − 8<br><br> x + 6
IRISSAK [1]
First, substitute -2 into each equation where there is an <span>x:
</span>(-2)2 -8<span>
</span>(-2) +6

Then multiply the -2 and the 2 in the first equation and add -2 and 6 in the second:
-4 -8
4

Lastly, subtract -4 and 8:
-12
4

Now you have you answers -12 and 4!
3 0
3 years ago
Will mark as brainliest! 40 points! Thanks!
Vesna [10]

Answer:

see below

Step-by-step explanation:

Part A

lets go as simple as possible

x> 0 will shade the right hand side of the graph

dotted line on the y axis, shaded to the right

y <2

will shade below the line y=2

dotted line on the line y=2, shaded below

see attached graph, the red lines are dotted

Part B

C = (2,1)

is the x coordinate greater than 0     2>0

is the y coordinate less than 2        1 <2

yes  it is in the shaded region

F = (3,-4)

is the x coordinate greater than 0     3>0

is the y coordinate less than 2        -4 <2

yes  it is in the shaded region


Part C

y < 7x-4

the  y intercept is -4

the slope is 7

draw a dotted  line through -4 going up 7 and over to the right 1

shade below it

She is interested in house F,C,E

Or

(0,-4) add 7 for each increase of 1 in x

(1,3) (2,10)  points E and C are less than 2,10  so they are below the line


5 0
3 years ago
A box of nails weighs 130 pounds when it is 2/3 full. It weighs 74 pounds when it is 3/8 full. What is the weight of the box?
NeTakaya
Let the weight of the full Volume of nails in the box be W.
Let the weight of the box be B.

2/3 W  + B =  130 ........i          From the first statement.
3/8 W  + B =      74 ......ii         From the second statement.

Equation (i)  Minus (ii)

2/3 W  - 3/8 W + B  - B =  130 - 74
(16W  - 9W) / 24                 = 56

7W / 24  =  56.
W        =  56 * 24 / 7
W        =    192  Pounds.

Substituting V = 64 in equation (i)
2/3 W  + B =  130
2/3 * 192  + B =  130
2 * 64  + B =  130
128  + B =  130
B =  130 -128 = 2.

Therefore, weight of box, B = 2 pounds.

7 0
3 years ago
If the temperature is 3 degrees and falls by 12 degrees what is the new temperature
ella [17]
-9 degrees is the answer
4 0
3 years ago
Biologists are studying tropical plants to determine how far north each type of plant can survive. What is the population?
Ahat [919]

It is the tropical plants. The text asks about population which is defined as the total number of an object or an entity. In scientific researches, samples are drawn from population to explore either qualitatively or quantitatively a phenomenon. Moreover, biologists study plants as subjects in this study.
5 0
3 years ago
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