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Vaselesa [24]
3 years ago
7

A survey showed that students were 2:3 in favour of the new team logo. In all, 780 people were surveyed, how many were in favour

of the new logo?
156 students
312 students
468 students
520 students
Mathematics
2 answers:
vazorg [7]3 years ago
6 0

Answer:

<em>312 students </em>

Step-by-step explanation:

---- If 2 : 3 is a ratio of "in favour" vs "against to" then

\frac{2}{3} = \frac{x}{780-x}

3x = 2(780 - x)

3x + 2x = 1560

<em>x = 312</em>

defon3 years ago
4 0
468 students were in favour of the new logo
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tiny-mole [99]

The next number in the sequence is 8

4 0
3 years ago
$400 interest is earned on a principal of $2,000 at a simple interest rate of 5% interest per year. For how many years was the p
bogdanovich [222]

Answer:

4 years

Step-by-step explanation:

Given data

Simple interest= $400

Principal= $2000

Rate= 5%

The simple interest formula is given as

SI=PRT/100

substitute and solve for T

400=2000*5*T/100

cross multiply

400*100= 10000*T

40000=10000T

T= 40000/10000

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Hence the time taken is 4 years

4 0
2 years ago
How many<br> roots does the relation y = 4x² - 20x + 25 have? (2 marks)
Dovator [93]

Answer:

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Step-by-step explanation:

7 0
2 years ago
The table gives the relative frequencies of recipes that contains sugar and salt, contain at least one of those ingredients, or
tigry1 [53]

<u>Answer-</u>

<em>The probability that a randomly selected recipe does not contain sugar, given that it contains salt is 22.4%</em>

<u>Solution-</u>

The given table in the link shows the relative frequencies of recipes that contains sugar and salt, or contains at least one of those ingredients, or contains neither of those ingredients.

We have to find the conditional probability that the recipe doesn't contain sugar, given that it contains salt.

We know that, the conditional probability of occurrence of A given that B occurs is,

P(A|B)=\frac{P(A\ and\ B)}{P(B)} =\frac{P(A\bigcap B)}{P(B)}

P(\text{Doesn't contain sugar}\ |\ \text{Contains salt})=\frac{P(\text{Doesn't contain sugar}\ and\ \text{Contains salt})}{P(\text{Contains salt})}


P(\text{Doesn't contain sugar}\ and\ \text{Contains salt})=\frac{0.15}{1} =0.15\\P(\text{Contains salt})=\frac{0.67}{1}=0.67

Putting these values,

P(\text{Doesn't contain sugar}\ |\ \text{Contains salt})=\frac{0.15}{0.67} =0.224=22.4\%

5 0
3 years ago
You have a nickle and a number cube with numbers 1 - 6. How many possible outcomes would there be?
Vadim26 [7]

I believe that is 12

Very sorry if I am wrong

6 0
3 years ago
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