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nirvana33 [79]
3 years ago
12

Out of 24 cookies, 3 4 are chocolate chip. How many cookies are chocolate chip?

Mathematics
1 answer:
Yanka [14]3 years ago
7 0

Answer:

18 cookies

Step-by-step explanation:

3/4 = 75%

75% = 0.75

Multiply this by 24 = 18 cookies

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Question. 7 Let abc be a three-digit number. Then, abc + bca + cab is not divisible by (a) a + b + c (b) 3 (c) 37 (d) 9
Neko [114]

Answer:

D. 9

Step-by-step explanation:

Let

abc=100a+10b+c

bca=100b+10c+a

cab=100c+10a+b

abc + bca + cab=(100a+10b+c) + (100b+10c+a) + (100c+10a+b)

=100a + 10b + c + 100b + 10c + a + 100c + 10a + b

Collect like terms

=100a + a + 10a + 10b + 100b + b + c + 10c + 100c

=111a + 111b + 111 c

Factorise

=111(a+b+c)

abc + bca + cab = 111(a+b+c)

Factors of 111(a+b+c)= 1, 3, 37, 111, and (a+b+c)

abc + bca + cab is divisible by a+b+c because it is a factor of 111(a+b+c)

abc + bca + cab is divisible by 3 because 3 is a factor of 111(a+b+c)

abc + bca + cab is divisible by 37 because 37 is a factor of 111(a+b+c)

abc + bca + cab is not divisible by 9 because 9 is not a factor of 111(a+b+c)

7 0
3 years ago
Help me please i neeeeeeeeed to get this right
Georgia [21]

Answer:

d)96π

Step-by-step explanation:

Given:

Cyliner with radius,a= 4

Height b=8

Surface area of cylinder, A=2πrh+2πr^2

=2π(rh+r^2)

=2π(4(8) + 4^2)

= 2π(32+16)

 =2π(48)

 =96π !

8 0
3 years ago
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Which values of c will cause the quadratic equation -- x2 + 3x + c = 0 to have no real number solutions? Check all that
Novay_Z [31]

Answer:

c=5x

Step-by-step explanation:

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Answer:

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3 years ago
Does anyone know the formula for finding the area of a circles sector
NemiM [27]
Area=(Theta/2) * r^2 This should be it, obviously Theta is your angle and you should use radiants in theory.
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3 years ago
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