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kirill115 [55]
3 years ago
8

Ally has 7 connecting cubes. Greg has 4 connecting cubes. How many connecting cubes do they have?

Mathematics
2 answers:
Julli [10]3 years ago
7 0
Well, we can use some simple addition, okay? So if Ally has 7 cubes, and Greg has four, we can use the equation: x+y = ?, so 7 + 4 = 11. x and y don't mean anything in this scenario, but I just used them as variables. I hope this helps! :)
Inessa05 [86]3 years ago
4 0
7 + 4 = 11 , so the answer is 11
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Robin can clean 72 rooms in 6 days how many rooms can robin clean in 9 days
galben [10]

Hello!

Robin can clean 72 rooms in 6 days. How many rooms can Robin clean in 9 days?

We have a proportional magnitude (directly proportional), if we increase the number of days for cleaning, obviously we will have more rooms cleaned, then:

clean rooms __________ days

72 ----------------------------------- 6

y ------------------------------------- 9

\dfrac{72}{y} = \dfrac{6}{9}

multiply the means by the extremes

6*y = 72*9

6\:y = 648

y = \dfrac{648}{6}

\boxed{\boxed{y = 108}}\Longleftarrow(clean\:rooms)\end{array}}\qquad\checkmark

Answer:  

108 clean rooms in 9 days  

________________________

I Hope this helps, greetings ... Dexteright02! =)

6 0
3 years ago
A storage container consists of a box of length 90cm, width 42 cm and height 34 cm, and a lid
Ivanshal [37]

Answer:

20079.05 cm^2,

Step-by-step explanation:

Surface area of the box without the lid

=  90*42 + 2(90*34) + 2(42*34) = 12756.

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The diameter of the 2 half circles = 42 so the radius = 21.

The area of the lid  

= 2 + 1/2 π (21)^2 + π r * 90

= 7323,052

Total = 20079.052

 

7 0
2 years ago
Which of the following are solutions to the equation below?
inysia [295]

The answer is C and D

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Then we will use the quadratic formula to find the answers.

using the Quadratic Formula where:

a = 9, b = -6, and c = -6

and the formula is 6 +- \sqrt{6^{2} } -4 (9)(6) /2 (9)

6 0
3 years ago
Jordan has 4/5 as many DVDs as Joseph. If Jordan has 56 DVDs, then how many does joseph have?
Andreyy89
Jordan has 4/5 as many DVDs as Joseph means joseph has more DVDs than Jordan. number of joseph's DVDs * 4/5 = 56 so 
<span>number of joseph's DVDs= 56 * 5/4 = 70</span>
3 0
3 years ago
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nikdorinn [45]
<span>R=15d+0.20R=15d+0.20 is the answer</span>
4 0
3 years ago
Read 2 more answers
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