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3 years ago

What is 5% of 400 please add the formula for finding this if you can

1 answer:

6 0

Percent formula : is/of = %/100

what is 5% of 400
is = x
of = 400
% = 5

now we sub
x/400 = 5/100
this is a proportion, so we cross multiply
(100)(x) = (400)(5)
100x = 2000
x = 2000/100
x = 20......so 5% of 400 is 20

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Can anybody please help me out with this question I would really appreciate it so much . Please and thank you .

mr Goodwill [35]

Answer:

x=3 MT=36 MH=18

Step-by-step explanation:

The two triangles are the same, so 7x+8=10x-1

3x=9

x=3

MT=12x3=36

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3 years ago

What is the value of x to the power of 6 + y to the power of 2 when x=1 and y=11

siniylev [52]

Answer: 122

Step-by-step explanation: Substitute the values of x and y into the expression.

$x^6+y^2 \\ \text{ is like } \\ ( )^6 + ( )^2$

"Fill in the blanks" with the numbers given for x and y.

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3 years ago

A small combination lock on a suitcase has 55 wheels, each labeled with the 10 digits 0 to 9. How many 55 digit combinations ar

den301095 [7]

Suppose $a_n$ is the number of possible combinations for a suitcase with a lock consisting of $n$ wheels. If you added one more wheel onto the lock, there would only be 9 allowed possible digits you can use for the new wheel. This means the number of possible combinations for $n+1$ wheels, or $a_{n+1}$ is given recursively by the formula

$a_{n+1}=9a_n$

starting with $a_1=10$ (because you can start the combination with any one of the ten available digits 0 through 9).

For example, if the combination for a 3-wheel lock is 282, then a 4-wheel lock can be any one of 2820, 2821, 2823, ..., 2829 (nine possibilities depending on the second-to-last digit).

By substitution, you have

$a_{n+1}=9a_n=9^2a_{n-1}=9^3a_{n-2}=\cdots=9^na_1=10\times9^n$

This means a lock with 55 wheels will have

$a_{55}=10\times9^{54}$

possible combinations (a number with 53 digits).

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3 years ago

X + 78 = 90 can someone solve this for me please?

kondaur [170]

Let's solve your equation step-by-step.

x+78=90

Step 1: Subtract 78 from both sides.

x+78−78=90−78

x=12

Please put brainliest!

8 0

3 years ago

Ill help just cal me MAMAS

Westkost [7]

Answer:

Bet

Step-by-step explanation:

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3 years ago