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2 years ago

The ratio of teachers to students at Priory School is 2:27

Mathematics

1 answer:

Rzqust [24]2 years ago

4 0

Answer:

609

Step-by-step explanation:

ratio of teachers to students at Priory School =2:27

Let X= total number of both the students and the teacher

Ratio of teacher=( 2/29)X

Ratio of student is (27/29 )X

But total number of teacher = 42

2/29 ×X =42

2X= 42×29

2X=1218

X= 609

Hence, school's total population is 609

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How do you write 10/4 as a percentage?

sdas [7]

Answer:

Step-by-step explanation:

So first lets divide!

10÷4=2.5

Now, 2.5 x 100 = 250!

Hope this helped! Have a great day!

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2 years ago

9. Rama is using a hand glider to fly directly from the top of one cliff onto another cliff below. The glider is guided by a cab

dexar [7]

Answer:

791.2 ft

Step-by-step explanation:

The cable is inclined and this acts as the hypotenuse. Since the other two sides are given.

$H=\sqrt {x^{2}+y^{2}}$

where x and y represent the distance between two cliffs apart and difference in heights. Substituting 740 for x and 280 for y then

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3 years ago

Read 2 more answers

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melisa1 [442]

Answer:

1.5 bags

Step-by-step explanation:

Width = 1 yard = 3 feet

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Square feet(area) of the floor = 5ft × 3ft = 15sqft

1 bag = 10sqft

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x bags = (15 × 1)/10 = 1.5 bags

4 0

2 years ago

Please solve equations by completing square

BlackZzzverrR [31]

$x^2-4x+1=0\\
x^2-4x+4-3=0\\
(x-2)^2=3\\
|x-2|=\sqrt3\\
x-2=\sqrt3 \vee x-2=-\sqrt3\\
x=2+\sqrt3 \vee x=2-\sqrt3$

$x^2+6x-9=0\\
x^2+6x+9-18=0\\
(x+3)^2=18\\
|x+3|=\sqrt{18}=3\sqrt2\\
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x=-3+3\sqrt2 \vee x=-3-3\sqrt2\\$

$x^2+20x+3=0\\
x^2+20x+100-97=0\\
(x+10)^2=97\\
|x+10|=\sqrt{97}\\
x+10=\sqrt{97} \vee x+10=-\sqrt{97}\\
x=-10+\sqrt{97} \vee x=-10-\sqrt{97}$

$x^2-2x-5=0\\
x^2-2x+1-6=0\\
(x-1)^2=6\\
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3 years ago

In arguing against the death penalty, Amnesty International has pointed out supposed inequities, such as the many times a black

uysha [10]

Answer:

(a) 0.2824

(b) 0.0002441

Step-by-step explanation:

Assuming that the population is large enough to behave as a binomial distribution (between whites and non-whites), the probability of 12 out of 12 juros being white is:

$P(w=12) = p(w)^{12}$

Where p(w) is the proportion of the population that is white:

(a) for p = 0.90

$P(w=12) = 0.90^{12}\\P(w=12) =0.2824$

The probability is 0.2824.

(b) for p = 0.50

$P(w=12) = 0.50^{12}\\P(w=12) =0.0002441$

The probability is 0.0002441.

5 0

2 years ago