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3 years ago

13

Simplify or solve the problem 4 ( 3x - 6 ) = 12 a) -3 b) 0 c) 3

1 answer:

nataly862011 [7]3 years ago

6 0

X is equal to 3 which is (c)

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Please help!! I've attached a picture of the problem

BARSIC [14]

Answer: BC=8 units

Step-by-step explanation:

So in this figure, this triangle, that is a parallelogram named DFCE , and one of their property three yeti you add learn you learned is that a parallelogram has like rectangle two sides per two that are parallel and have the same measure ( but you can also use the little lines that show who is the same as who ) in this one you can write an equality: CE=FD=4. Then there is the same two lines on the EB segment so EB=4 . Then we can write that BC= BE + EC

BC= 4+4

BC= 8 units

I’m not English so I tried explaining as simple as possible sorry if you didn’t understand :/

3 0

3 years ago

Raul bought a PS5 and 5 games to go with it for $645. If the PS5 costs $500, how much did each game cost? $

tresset_1 [31]

Answer:

$29

Step-by-step explanation:

A PS5 costs $500. Subtract 500 from the total cost:

645 - 500 = 145

There are 5 games in total, costing $145 in all. Assuming all of them have the same price, simply divide 145 with 5:

145/5 = 29

Each game costs $29.

~

6 0

3 years ago

Read 2 more answers

What is the square root of 92

il63 [147K]

9.59166304663 Or 9.6

8 0

3 years ago

Read 2 more answers

3. Solve using substitution.<br> x - y = 4<br> 3x - 2y = -5

Vedmedyk [2.9K]

<u>Given</u>:

The system of linear equations are $x-y=4$ and $3x-2y=-5$

We need to determine the solution to the system of equations using substitution method.

<u>Solution</u>:

The solution can be determined using the substitution method.

Let us substitute $x=4+y$ in the equation $3x-2y=-5$

Thus, we have;

$3(4+y)-2y=-5$

$12+3y-2y=-5$

$12+y=-5$

$y=-17$

Thus, the value of y is -17.

Substituting $y=-17$ in the equation $x-y=4$ , we get;

$x+17=4$

$x=-13$

Thus, the value of x is -13.

Hence, the solution to the system of equations is (-13,-17)

6 0

4 years ago

The average hourly wage for a high school student in Illinois is $8.25 per hour with a standard deviation of $.25. Assume hourly

serious [3.7K]

Answer:

Step-by-step explanation:

Hello!

The variable of interest is

X: hourly wage of a high school student

X~N(μ;σ²)

X[bar]= $8.25

σ= $0.25

For a 95% CI for the average hourly wage for<u> 1 </u>high school student:

For this exercise you have to consider the sample size n=1

a) The margin of error of the CI is calculated as:

d= $Z_{1-\alpha /2}$ * σ

1-α: 0.95 ⇒ α:0.05

1-α/2:0.975

$Z_{1-\alpha /2}= Z_{0.975}= 1.96$

d= 1.96 * 0.25= 0.49

b)

The formula for the interval is

X[bar] ± $Z_{1-\alpha /2}$ * σ

[8.25 ± 0.49]

[7.76; 8.74]

With a 95% you'd expect the interval $[7.76; 8.74] to include the average hourly wage of one high school student in Illinois.

c)

Te calculated interval is $ [7.76; 8.74] the value $9.15 does nor fall within that acceptable range.

I hope this helps!

7 0

3 years ago