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photoshop1234 [79]
3 years ago
7

S 8. a ES a) There are 40 students in a class and 16 of them are girls. (i) Find the ratio of the girls and the total number of

students. (ii) Find the ratio of the boys and the total number of students. (iii) Find the ratio of the girls and boys.
​
Mathematics
1 answer:
umka21 [38]3 years ago
7 0

Answer:

The ratio for the boys is 24:40 and the girls is 16:40 so the girls and boys is 16:24

Step-by-step explanation:

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Step-by-step explanation:

2y+9= 4

2y=-5

y=-5/2

y= -2and 1/2

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Morgarella [4.7K]
After 9 it would be 10 so your answer is 10
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Which two values of x are roots of the polynomial below?<br> 3x2-3x+1
QveST [7]

Answer:

The roots are

x=\frac{1}{6} [3+ i\sqrt{3}]

x=\frac{1}{6} [3- i\sqrt{3}]

Step-by-step explanation:

we have

3x^2-3x+1

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

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x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}

in this problem we have

3x^2-3x+1=0  

so

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substitute in the formula

x=\frac{-(-3)\pm\sqrt{-3^{2}-4(3)(1)}} {2(3)}

x=\frac{3\pm\sqrt{-3}} {6}

Remember that

i=\sqrt{-1}

so

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The roots are

x=\frac{1}{6} [3+ i\sqrt{3}]

x=\frac{1}{6} [3- i\sqrt{3}]

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3 years ago
Calculate Medicare tax (1.45% of gross pay <br><br> Gross Pay: $576.00
Mkey [24]

Answer: $8.35

Step-by-step explanation:

Given: The amount as gross pay= $576.00

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Now, to calculate the medicare tax we need to multiply the rate of Medicare tax with the gross pay , we get

\text{Medicare tax=0.0145*Gross Pay}\\\\\Rightarrow\ \text{Medicare tax}=0.0145\times576.00\\\\\Rightarrow\ \text{Medicare tax}=\$8.352\approx\$8.35

5 0
3 years ago
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