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UNO [17]
3 years ago
7

50 POINTS!! What is the sum of the first four composite numbers? 19 20 27 28

Mathematics
2 answers:
Nataliya [291]3 years ago
6 0

its 27

hope this helps

irina1246 [14]3 years ago
3 0

Answer:

C.27

Step-by-step explanation:

Composite number is a number that have factor other than 1 or the number itself. It is the opposite of prime number. Then to solve this question it will be easier to make this list

2= 2 *1 = prime

3= 3 *1 = prime

4= 2 *2 = composite

5= 5 *1 = prime

6= 2 *3 = composite

7= 7 *1 = prime

8= 2 *2 * 2 = composite

9= 3 *3 = composite

then 4 first composite is: 4+6+8+9= 27

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Nikki bought a patio set on sale for $480. The original price was $850. What was the rate of discount?
ASHA 777 [7]

Answer:

43.5 % decrease

Step-by-step explanation:

Take the original price and subtract the new price

850-480

370

Divide by the original price

370/850

.435294118

Change to percent form by multiplying by 100

43.5294118 % decrease

43.5 % decrease

3 0
2 years ago
Determine the lateral and total surface area of the pyramid.
Umnica [9.8K]

Answer:                      

Lateral surface area = 45.5

Total surface area = 60.2

Step-by-step explanation: To find the lateral surface area, we first need to find the surface area of one triangle. For the triangle on the right/left, you multiply 3.5*5.8, which equals 20.3. Since this is a triangle, we multiply the product (20.3) by 1/2. The answer is 10.15. Since there are two triangles with the same dimensions as this, we multiply 10.15 by 2, which equals 20.3. For the triangle on the top/bottom, we multiply 4.2*6, which equals 25.2. Since this is a triangle again, we multiply 25.2 by 1/2. The answer is 12.6. Since there are two triangles with the same dimensions as this, we multiply 12.6 by 2, which equals 25.2. Now we add 20.3 + 25.2, which equals 45.5. This is the lateral surface area.

To find the total surface area, we now need to find the area of the base as well. To do so, we multiply 4.2 by 3.5, which equals 14.7. Now we add 45.5, the area of all the triangles, with 14.7, the area of the base. The answer is 60.2.

I hope this helps!

6 0
3 years ago
Find the lower quartile (Q1) median and upper quartile (Q3)of the data below
Tanzania [10]

Answer:

Below in bold.

Step-by-step explanation:

Arrange the data in ascending order:

1.  1 1 2 3 4 7 9

Median = middle number = 3.

Q1 = 1

Q3 = 7.

2.  26 31 34 38 42 66 74 78

Median = mean of 2 middle numbers = 40.

Q1 = 31.

Q3 = 74.

3.  36 45 49 52 53 64 81 87 93

Median =  middle number = 53.

Q1 = 47.

Q3 = 84.

5 0
2 years ago
Sam bought 2 plants for $7.00 each. He also bought a bag of fertilizer for $3.60.
Yanka [14]

Answer:

2 plants for $7.00

$7.00 x 2 or $7.00 + $7.00 = $14.00

+ $3.60

= D. <u>$17.60</u>

Good luck, hope this helped!

3 0
3 years ago
Read 2 more answers
What must be true in order to find a sum for an infinite geometric series?​
Elis [28]

Answer:

That’s just your millennial snowflake brain being unable to comprehend real work. My grandpa lost both his thumbs to frostbite while walking 29.67 kilomiles to school in 10 feet of snow in the summer uphill both ways and he could still wield any tool known to man. And he did so for 83 and a half years until they forced him to retire because he was making all the other workers look like pansies. When he was told he was being forced to retire, he marched into the CEO’s office and declared “I’d rather be dead than a deadbeat.” Then he dropped dead on the spot. Now that’s loyalty!

6 0
2 years ago
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