Use a systems of equations

x+y=32
4x+3y=111

x+y=32 equals x=-y+32 substitute that into the other equation

4(-y+32)+3y=111
-4y+128+3y=111
-y+128=111
-y=-17
y=17

since y was used as “3y” that is the variable used for the 3 point questions, so there are 17 3 point questions

6 0

4 years ago

Read 2 more answers

Question 1] Find the mean for each set of data6,9,2,4,3,6,5

SOVA2 [1]

Given:

The given set of data is

$6,9,2,4,3,6,5$

To find: The mean for the given set of data?

Explanation:

We can calculate the mean of a given set of data by using the formula

$Mean=\frac{Sum\text{ of the terms}}{Number\text{ of terms}}$

Here,

We can calculate the sum of terms as

The sum of terms = 6+9+2+4+3+6+5

The sum of terms =35.

and

The number of terms = 7.

Now, by substituting the value in the above formula

Therefore,

$\begin{gathered} Mean=\frac{35}{7} \\ \\ Mean=5 \end{gathered}$

Hence, the mean = 5.

Answer: The mean for a given set of data is 5.

4 0

2 years ago

I need help it has to be correct

seraphim [82]

Answer:

BC = 14.40 correct to 1dp

Step-by-step explanation:

Sin44°= AC/BC

BC=AC/sin44°

BC=10/0.695

BC=14.3884892086330

BC = 14.40 correct to 1dp

6 0

3 years ago