Estimate 58% of 121 by using 10%

Answers

Answer 1
Answer:

Answer:

58% of 121 by using 10% is 70.18.

Step-by-step explanation:

Given : 58% of 121.

To find  : estimate 58% of 121 by using 10%.

Solution : We have given  58%

Estimate of  58% is 60%

We need to use 10%

We can write 60%  as 6 times of 10%

Since , 10% of 121

10*(121)/(100) =  12.1

60%  =  6 times of 10%

Plugging the values

60%  == 6 times of 12.1

6 *12.1 = 72 .6

To take this further, 58% is 2% less than 60%, or 2 times 1%. 1% of 121 is 1.21.

72.6  - (1.21 * 2) = 72.6 - 2.42 = 70.18

Therefore,  58% of 121 by using 10% is 70.18.

Answer 2
Answer: 58% is about equal to 60%, or 6 times 10%. 10% of 121 is 12.1.
12.1 * 6 = 72.6
To take this further, 58% is 2% less than 60%, or 2 times 1%. 1% of 121 is 1.21.
72.6  - (1.21 * 2) = 72.6 - 2.42 = 70.18

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What is the quotient of (3+I)(3-I)/-(2+2i)^2

Answers

Answer:

E. -5i/4

Step-by-step explanation:

(9 + 3i - 3i -i^(2))/(-4 -8i -4i^(2) ) =(9-(-1))/(-4-8i-4(-1)) =(10)/(-8i) =(-5)/(4i) =(-5i)/(4)

Someone please help me

Answers

22 tables because 22x7 is 154
or you could divide 154 by 7

What is the greatest common factor of 16 and 64

Answers

16: 1,2,4,8, and 16 

64: 1, 2, 4, 8, 16, 32, and 64

GCF: 16 

The greatest common factor of 16 and 64 is 16.

Given that we need to find the greatest common factor of 16 and 64,

To find the greatest common factor (GCF) of two numbers, such as 16 and 64, we need to determine the largest number that divides both of them without leaving a remainder.

First, let's find the factors of each number:

Factors of 16: 1, 2, 4, 8, 16

Factors of 64: 1, 2, 4, 8, 16, 32, 64

As we can see, both numbers have the factors 1, 2, 4, 8, and 16. The largest number that divides both 16 and 64 without leaving a remainder is 16.

In general, when finding the GCF of two numbers, we look for the common factors they share and choose the largest one.

In this case, since 16 is the largest common factor, it becomes the GCF.

Hence the greatest common factor is 16.

Learn more about greatest common factor click;

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A typist takes 8 minutes to type 360 words.How many minutes will he take to type 225 words?
A. 5 minutes
B. 4 minutes
C. 3 minutes
D. 13 minutes

Answers

Answer:

A. 5 minutes

Step-by-step explanation:

We can solve this question using proportions

Let x be the number of minutes needed to type 225 words.

8 minutes = 360 words

     x          = 225 words

Cross-multiply

360 × x  =  225× 8

360 x = 1800

Divide both-side of the equation by 360

(360x)/(360)  = (1800)/(360)

(On the left-hand side of the equation, 360 at the numerator  will cancel-out 360 at the denominator, while on the right-hand side of the equation 1800 will be divided by 360)

x= 5 minutes

Therefore, it will take 5 minutes to type 225 words

Well, it cant be option B because then it wuld be half the time (180 mins.)

It cant be option D becasue then it would be over 360 mins, seeing that it only took 8 mins to type 360

And it cant be option C beacuse it would be too small, if 4 mins is to small then 3 mins is worse

Your answer would be A 5 minutes it's just a little bit above 4 mins(half)

What number has the same value as 50 tens?

Answers

500
Reason:
50 tens is basically ten 50 times. 10 x 50 = 500
50 tens is the same as saying 50 x 10 which is 500.
One ten is 10.  Therefore, to find 50 tens, you must times 50 by 10.  When multiplying a number greater than 0 by 10, you simply add a 0 to the end of the number.  Following this rule, 50 tens is 500. 

Sarah's English test had 90 questions and she got 18 questions wrong. What percent of the questions did she get correct?

Answers

So,

Sarah got 72/90 questions correct.

Simplify 72/90
72 = 2 * 2 * 2 * 3 * 3
90 = 2 * 3 * 3 * 5

Cross out "ones"
2 * 2 over
5
4/5 = 80%

Sarah got 80% of the questions correct
90-18=72 questions (answered correct)
72/90=0.8
To get the percent, you have to move the decimal point over two places, so 80%