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maksim [4K]
2 years ago
8

Ying eats some yoghurt. The yoghurt contains 192 mg of calcium. This is 16% of the total amount of calcium that Ying should have

each day. Work out the total amount of calcium that Ying should have each day, showing your working out (3 marks).
Mathematics
2 answers:
Bas_tet [7]2 years ago
5 0

Answer:

1200 mg

Step-by-step explanation:

192 mg : 16%

X : 100%

192/16 = X/100

X = 192/16 × 100

X = 1200 mg

nikitadnepr [17]2 years ago
4 0

Answer:

1200 mg

Step-by-step explanation:

16% = .16

.16x = 192

x =(192/.16)

x = 1200mg

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<u>Figure C:</u>

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3 years ago
The volume of a rectangular prism is b3 + 8b2 + 19b + 12 cubic units, and its height is b + 3 units. The area of the base of the
omeli [17]
Given:

The volume of the rectangular prism is 

b^{3}+8 b^{2} +19b+12,

the height is h=(b+3)

1. The volume of a rectangular prism is (base area)*height

also, notice that the volume is a third degree polynomial, the height is a 1st degree polynomial, so the base area must be a 2nd degree polynomial, whose coefficients we don't know yet.
Let this quadratic polynomial be (mb^{2}+nb+k)

 
2

b^{3}+8 b^{2} +19b+12=(mb^{2}+nb+k)*(b+3)


notice that  b^{3} is the product of the largest 2 terms: mb^{2} and b, so m must be 1

also, notice that 12 is the product of the constants, k and 3

so k*3=12, this means k=4

3
we write the above equality again:

b^{3}+8 b^{2} +19b+12=(b^{2}+nb+4)*(b+3)


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== b^{3}+(n+3)b^{2}+(3n+4)b+12


4
now compare the coefficient with the left side:

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