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3 years ago

Photo attached. Geometry ‍♀️

Mathematics

1 answer:

Artemon [7]3 years ago

7 0

12 for the first one, 6*4=24 24 divided by 2

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A book is marked down by 28 percent from an original price of $19.50. What is the new price?

kotykmax [81]

First find 28% of $19.50:

($19.50) / (100) x (28) = $5.46

Now minus the 285 from the original price:

($19.50) - ($5.46) = $14.04

The answer is $14.04
Hope it helped :)

9 0

3 years ago

Read 2 more answers

Approximately how many times greater is 1.2×103 than 4×10−1 ?

Galina-37 [17]

3000 Quick answer
Let your calculator do the work. Be careful how you enter this in. (Are you supposed to estimate it? We'll get around to that.) Write it like this.

1.2 * 10^3 divided by 4 * 10^-1 Your calculator will do this nicely. The trick is the - 1. Put it in the calculator like this.
1.2
*
10
^
3
=
÷
4
*
10
^
(-1)
= The calculator should read 3000
That's one way to do it. Another way is just to do it all by hand. The numbers are easy enough
1.2 * 10^3 means shift the decimal 3 places right. 1 200 which is 1200
4 * 10^-1 can be handled 2 ways 10 to the minus 1 in the denominator becomes 10^1 in the numerator. Notice the sign change on the 10 when you shift if :it becomes plus! That's why you did it.

1200 * 10^1
12000

Now you are still left with 4 in the denominator.
12000/4 = 3000.

The first method always works. The second one gives you a better understanding of how powers work. There are other ways of doing this, but these are the two best, I think.

4 0

3 years ago

Can someone please help me to solve 3/4 problems pls i will mark you the brainly pls I need help

Gennadij [26K]

Answer:

3. x = 11.6

4. f = 2 g = 2

Step-by-step explanation:

3) (3x - 7) + (4x + 6) = 90 --> x = 11.6

4) 3f + 1 = 5f - 15 ---> f = 2

6g - 5 = 3f + 1

6g = 3(2) + 6 ---> g = 2

8 0

3 years ago

Help! Geometry .......

LiRa [457]

The answer is 180

correct me if I'm wrong

7 0

4 years ago

Type the correct answer in each box. write each answer as a fraction, using / for the fraction bar. wesley draws a card at rando

faust18 [17]

The probability that Wesley draws an ace or a jack is 0.154 and the probability that Wesley draws a number card or a black card is 0.846

<h3>The probability of Ace or jack</h3>

In a standard deck of cards, we have:

Total = 52

Ace = 4

Jack = 4

Ace and Jack = 0

The probability is then calculated as:

P = P(Ace) +P(Jack) - P(Ace and Jack)

This gives

P = 4/52 + 4/52 - 0/52

Evaluate

P = 0.154

Hence, the probability that Wesley draws an ace or a jack is 0.154

<h3>The probability of Number card or black card</h3>

In a standard deck of cards, we have:

Total = 52

Number card = 36

Black = 26

Number card and Black = 18

The probability is then calculated as:

P = P(Number card) +P(Black card) - P(Both)

This gives

P = 36/52 + 26/52 - 18/52

Evaluate

P = 0.846

Hence, the probability that Wesley draws a number card or a black card is 0.846