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3 years ago

This graph shows the relationship between the number of

Mathematics

2 answers:

choli [55]3 years ago

6 0

Answer:

22/7.2 answer i believe

Morgarella [4.7K]3 years ago

4 0

Answer

PERSON ABOVE BE CORRECT

Step-by-step explanation:

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Solve equation: 3 (x + 4) - 5 (1 - 1) < 5<br>

Alexandra [31]

Answer:

x<-7/3

Step-by-step explanation:

3x+12<5

3x+12-12<5-12

3x<-7

3x/3<-7/3

x<-7/3

4 0

4 years ago

A TEACHER IS CONSTRUCTING A MATHEMATICS TEST

Nuetrik [128]

The number of ways of constructing questions from the pool of 28 questions if her test is to have 3 difficult, 4 average and 3 easy questions is 924, 000 ways

<h3>How to determine the combination</h3>

Note that the formula for combination is given as;

Combination = $\frac{n!}{r!(n-r)!}$

From the information we have that;

There are 28 questions in the pool

The test should have a total of 10 questions;

6 difficult , 10 average and 12 easy questions

We are asked to determine the combination of;

3 difficult questions

4 average questions

3 easy questions

6C3 = $\frac{6!}{3!(6-3)!}$

6C3 = $\frac{720}{36}$

6C3 = 20

10C4 = $\frac{10!}{4!(10-4)!}$

10C4 = $\frac{3628800}{17280}$

10C4 = 210

12C4 = $\frac{12!}{4!(12-4)!}$

12C4 = 220

The number of ways of constructing the questions is

= 20 × 210 × 220

= 924, 000 ways

Thus, the number of ways of constructing questions from the pool of 28 questions if her test is to have 3 difficult, 4 average and 3 easy questions is 924, 000 ways

Learn more about combination here:

brainly.com/question/4658834

#SPJ1

7 0

2 years ago

I will mark Brainliest please help

Marizza181 [45]

Answer:

f(x) = 2

Step-by-step explanation:

f(x) represents a linear function since it had the same first differences while the "x" values are evenly space out (which we know could happen only if the function is linear). Now that we determined that the function is linear we have to write the function as an expression.

We know that any linear function has a form of f(x) = mx + b, where "m" is the slope and "b" is the y intercept (y value when x is equal to 0).

As I already mentioned the b will be equal tp the "y" intersect which is equal to the "y" value when x is equal to zero. Luckily in our table they did tell us what will be the "y" value when x is equal to zero, and it is 2. So now we know b = 2.

Then we have have to find the slope which can be found by using the following formula.....

$m = \frac{y_{2} - y_{1} }{x_{2} - x_{1} }$

Now we have to choose two different points from table and let the one that has bigger x value be represented as $(x_{2} , y_{2} )$ and the other one will be represented as $(x_{1}, y_{1} )$ . In our case I choose the points (2,2) and (1,2). Now if we represent them as what I mentioned earlier we can substitute their values into the equation that we ca use to find the slope. You should obtain the following.....