2 years ago

D

Mathematics

1 answer:

yawa3891 [41]2 years ago

4 0

Please comment on this so I can see the full question

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If 40x = 400, then A. x equals 100. B. x equals 10. C. I equals 4. O D. x equals 1. E. requals 0 ).

Brut [27]

Answer:

B- x= 10

Step-by-step explanation:

40x=400 -> 40 x 10= 400

8 0

2 years ago

Find AB I need help ASAP please

kykrilka [37]

Answer:

AB= 94

Step-by-step explanation:

43+43= 86

180-86= 94

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2 years ago

Help me please will mark you as brainliest

GalinKa [24]

B because it is moved but doesn’t change size

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A cube of aluminum has a volume of 9cm) and weighs 81 g. What is its density?

disa [49]

Answer:

9 g/cm³

Step-by-step explanation:

density = mass/volume

d = 81/9

d = 9 g/cm³

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2 years ago

If y is directly proportional to x^2 and y=18 and x=3,

Svetach [21]

Answer:

Step-by-step explanation:

(i)

$y=k*x^2\\\\if\ x=3, y=18 ==> 18=k*9\ ==> k=2\\\\Equation\ is:\ y=2x^2\\$

(ii)

x=5 ==> y=2*5²=50

(iii)

$32=2*x^2\\x^2=16\\x^2-4^2=0\\(x-4)(x+4)=0\\\\x=4\ or\ x=-4\\$

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2 years ago