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2 years ago

If a varies directly as b and a=3 when b=12, what is the value of a when b=18?

Mathematics

1 answer:

Zepler [3.9K]2 years ago

4 0

Answer:

a is proportional to b

a=kb

k is proportionality constant

k =a/b =3/12 =1/4

k=1/4 = a/b=a/18

1/4=a/18

a=18/4 =9/2 =4.5 answer

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Jeans ($48) Sweater ($42) Tennis Shoes ($69) T-Shirt ($21) Blouse ($52) Heather is shopping for back-to-school clothes. The item

IgorC [24]

You can use rounding to figure this problem out. If the number in the ones place is 0 to 4, round down to the nearest tens place; if the number in the ones place in 5 to 9, round up to the nearest tens place.

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2 years ago

What is [70+(-30)]+[2+(-9)]+[0.3+(-0.1)]

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2 years ago

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Help me with a. b. c. I need help

hammer [34]

Answer:

a) Perimeter = 20.5 Inches

Area is 15 Sq Inches

b) Perimeter is 61.4 Cms

Area is 210 Sq cm

c) Perimeter is 22 yards

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Step-by-step explanation:

a) Perimeter = sum of all the sides

= 8+7.5+5

=20.5

Perimeter = 20.5 Inches

Area of Triangle = $\frac{1}{2} \times height \times Base$

Base = 7.5 In

Height = 4 In

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$A = 2 \times 7.5$

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b) Perimeter = Sum of all the sides

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$A= 6 \times 25$

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P = 7+4+7+4 ( as Opposite sides are equal in a parallelogram

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3 years ago

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noname [10]

Yes, the blank numbers that can be written as a product of blank factors are called the prime factorization of a number. It can also be composite numbers where it can be written also as the product of prime factors.

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3 years ago

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