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Butoxors [25]
3 years ago
14

How many integers between 1 and 40 are multiples of 3 and 7

Mathematics
1 answer:
Elis [28]3 years ago
4 0
3 goes in to 40 13 times 7 goes in to 40 5 times but it is not 13+5 because you do not want to count 21 twice
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I need help on number six I have graphed the data that is given but I need to find three ordered pairs of numbers for each equat
aliya0001 [1]

#6

  • x-y=-2
  • y=x+2

Ordered pairs

  • (0,2)
  • (1,3)
  • (2,4)

And

  • x-y=2
  • y=x-2

Ordered pairs

  • (1,-1)
  • (2,0)
  • (-2,-4)

Remember parallel lines have no solutions

8 0
2 years ago
Read 2 more answers
(4z+3)+(4z+3)+(4z+3)+(4z+3) solve please or simplify
Volgvan

Answer:

16z+12

Step-by-step explanation:

Let's simplify step-by-step.

4z+3+4z+3+4z+3+4z+3

Combine Like Terms:

=4z+3+4z+3+4z+3+4z+3

=(4z+4z+4z+4z)+(3+3+3+3)

=16z+12

Hope this helps!

4 0
3 years ago
A particular dishwasher uses 444 gallons of water per load. Their advertising claims that hand washing the dishes uses 666 times
balu736 [363]

Answer: 6.35444444×10^13 gallons

Step-by-step explanation:

So a dishwasher uses 444 gallons of water per load.

That means it'll use 444*215215215 = 95555555460 gallons of water for 215215215 loads

Since washing dishes by hand takes 666 as much as water in comparison to using a dishwasher, we can do 95555555460x666 to find that you need 6.36399999×10^13 gallons of water to wash 215215215 loads.

The question asks for how much more water in gallons you can save, so do 6.36399999×10^13 - 95555555460 to get 6.35444444×10^13 gallons

8 0
2 years ago
Find the area of this triangle. Round to
DaniilM [7]

Answer:

63.3 square feet

Step-by-step explanation:

Let a = 20 ft, B = 15 ft, c = 9ft

s=\frac{a+b+c}{2}

s=\frac{20+15+9}{2}

s=\frac{44}{2}

s=22\: ft

Area \: of \:\triangle  =  \sqrt{s(s - a)(s - b)(s - c)}  \\  \\  = \sqrt{22(22 - 20)(22 - 15)(22 - 9)}  \\  \\= \sqrt{22 \times 2 \times 7 \times 13}  \\  \\= \sqrt{44 \times 91}  \\  \\ =  \sqrt{4,004}  \\  \\  = 63.2771681 \\  \\   \approx 63.3 \:  {ft}^{2}

6 0
3 years ago
Am supposed to use the power of tens to estimate this product<br> 52.6 ×9
zepelin [54]

Answer:

no

Step-by-step explanation:

5 0
3 years ago
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