MATHEMATICS HIGH SCHOOL

Record 3:40 P.M. in military time. A. 0340. B. 1540. C. 3400. D. 1604

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

12:00 + 3:40

= 15:40.

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Nina knows that the average of the x-intercepts represents the line of symmetry for a quadratic function through the x-axis. Which equation represents the average of the x-intercepts for f(x) = 4x2 – 24x + 20?-5-1/2 = -3 -10-2/2 = -4 1+5/2 = 3 2+10/2 = 4
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Julia has 2 identical rooms in her house. If each room measures 8 feet on one side and 12 feet on another, what is the total area of the rooms?

Answers

L = 12 ft
W = 8 ft
One room has area:
A1 = L · W = 12 · 8 = 96 ft²
The total area of rooms:
A = 2 · 96 = 192 ft²

One month Tammy rented 3
movies and
2
video games for a total of
$20
. The next month she rented
8
movies and
4
video games for a total of
$45
. Find the rental cost for each movie and each video game.

Answers

$3x + 2y = 20$
$8x + 4y = 45$
$where x = # of movies$ and $y = # of video games$

In order to solve this systems of equations problem, you need to use the elimination method.

You can multiply the top equation, $3x + 2y = 20$ , by -2 in order to eliminate the $y$ values.

$(3x + 2y = 20) *-2$ will turn into $-6x - 4y = -40$

From there, we can eliminate.

$-6x - 4y = -40$
$8x + 4y = 45$

Since $4y$ and $-4y$ are opposites in sign and equal in coefficients, we can remove them from our equations and add the rest of the terms together.

$-6x - 4y = -40$
$8x + 4y = 45$
will turn into -->
$2x = 5$

So, x = $(5)/(2)$ , which means 1 movie costs $2.50. Then, we can solve for the video game price, $y$ , by substituting our x back into one of the equations.

$3x + 2y = 20$
$3*<span>(5)/(2) </span>+ 2y = 20$
$y = (25)/(4)$

Each movie costs $2.50 and each video game costs $6.25.

It costs $4.25 for one pound of roast beef and $3.70 for one pound of ham. How much will it cost to purchase 2 pounds of roast beef and 3.5 pounds of ham?

Answers

11.45$ because u have to add the numbers up together

Hey I need help on finding where this girl messed up and can you tell me where she did?

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step 4 because where did she get the 2 there was no two hope this helps hope i am brainliest

Help me with these questions please

Answers

Answer: 7: Gas prices started off pretty high and then droppend a bit then they rised again

6: No i do not agree because it starts of growing fast then slows down on the graph

5: A- is increasing at a non constant rate B- is increase constantly C- decreasing non constontly

Samy Ourari

Middle School Teacher

Simplify the polynomial(-8x) + x + (-2x) a) 5x , b) 9x , c)-9, d) -5x

Answers

$(-8x) + x + (-2x)$

$-8x+x-2x$

$= -9x$

(-8x) + x + (-2x) = -8x + 1x - 2x = (-8 + 1 - 2)x = -9x

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Point A(–4, 2) is reflected over the line x = 3 to create the point A'. What are the coordinates of A'?. . A. (–4, –1). B. (–4, 8). C. (–1, 2). D. (10, 2).

a manufacturer can produce 112 shirt per hour. if a work day is 8 hours, how many shirts can be produced in 3.5 days