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mafiozo [28]
3 years ago
15

Please help! 10 ∑ 2i-9 i=3

Mathematics
1 answer:
pentagon [3]3 years ago
6 0

\sum\limits_{i=3}^{10}(2i-9)=2(3)-9+2(4)-9+2(5)-9+2(6)-9+2(7)-9\\\\+2(8)-9+2(9)-9+2(10)-9\\\\=6-9+8-9+10-9+12-9+14-9+16-9+18-9+20-9\\\\=90-72=18

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The perimeter of a rectangular rug is 30 yd and its length is 9 yd.find the area of this rug
Simora [160]
<span>perimeter of a rectangular rug is 30 yd

P= L+L+W+W 
 </span><span>P= 9+9+W+W 
P= 18 + 2W 
</span><span>18 + 2W = 30    
 2W = 30-18 
</span><span>W= 12/2 = 6

A= L x W 
A= 9   x w 
</span><span>A= 9  x 6 = 45 yd square</span>
4 0
3 years ago
$3.29 for 9.25 ounces<br><br><br> How much is it per ounce?
Georgia [21]

Answer:

About $0.36 per ounce

Step-by-step explanation:

8 0
3 years ago
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The Sugar Sweet Company is going to transport its sugar to market. It will cost $3500 to rent trucks, and it will cost an additi
Daniel [21]

Answer:

C = 150S + 3,500.

$6,050.

Step-by-step explanation:

It costs $3,500 to rent the trucks, so your constant/y-intercept will be $3,500.

It will cost $150 for every ton of sugar, so your slope will be $150.

You then have your equation:

C = 150S + 3,500.

If you were to transport 17 tons of sugar...

C = 150 * 17 + 3,500

C = 2,550 + 3,500

C = $6,050.

Hope this helps!

6 0
3 years ago
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Annabeth has $29.00 to spend at the sporting goods store. She buys a T-shirt that costs $15.32. She also wants to buy a soccer b
Gekata [30.6K]

Answer:

The most expensive she can buy is the soccerball

Step-by-step explanation:

Given

Total =\$29.00

T\ Shirt = \$15.32

Soccer\ Ball= \$12.87

Baseball\ Cap = \$8.39

Shin\ Guards = \$14.98

Water\ Bottle = \$5.93

Required

Using \$15.32 + c = \$29.00, what is the most expensive she can buy?

\$15.32 + c = \$29.00

Subtract $15.32 from both sides

\$15.32  - \$15.32 + c = \$29.00 - \$15.32

\$15.32  - \$15.32 + c = \$13.68

c = \$13.68

This means that she can not afford items that cost more than $13.68

i.e. the shin guards which costs $14.98

The items she can afford and their prices are:

Soccer\ Ball= \$12.87

Baseball\ Cap = \$8.39

Water\ Bottle = \$5.93

The most expensive of them all is:

Soccer\ Ball= \$12.87

4 0
3 years ago
2x + 5y = 6
Snezhnost [94]

Step-by-step explanation:

Given equations

2x + 5y = 6 .......i)

2x = 10 - 3y...... II)

Putting 2x = 10 - 3y in equation i

10 - 3y + 5y = 6

2y = 6 - 10

2y = - 4

y = - 4 / 2

y = - 2

Now putting y = - 2 in equation ii

2x = 10 - 3 * ( - 2)

2x = 10 + 6

2x = 16

x = 16 / 2

x = 8

So x = 8 and y = - 2

Hope it will help :)❤

7 0
3 years ago
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