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olga_2 [115]
3 years ago
14

Which expression is equivalent to 3(5x -- 4)?

Mathematics
1 answer:
cricket20 [7]3 years ago
6 0

Answer:

D. 15x – 12

3(5x - 4)

(3 ×(5x)) -(3×4)

15x – 12

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Please help me with 5-7
mixer [17]
2y+12 < 42

subtract 12 from both sides to isolate the 'y'

2y<30

since '2y' is multiplication, the opposite is division. divide by 2 to isolate the 'y'. doing so will flip the < sign to make it >.

y > 15

------------------------------------------------

She makes $15 an hour. Her employers take out $125 weekly. She gets a paycheck for $205 that week.

Add the $125 back in that her employer took out and you can find how much she earned that week, it's $330. Divide $330 by $15 to find that she worked a minimum of 22 hours that week.

15h-125=205

15h=330

h=22

plug 22 in to the equation 15h-125=205 to check your answer
------------------------------------------

I can't help you with the last one. Best of luck though man and god bless.


8 0
4 years ago
if you add four numbers together and then divide the sum by 4 you find the a.mean b. weighted average c. median d, mode
andreev551 [17]
The answer is a. mean. This is the same as the average. (The median is different. It is the number in the middle of all the numbers when they are arranged from smallest to largest. There is no summation or division required in order to determine it.)
6 0
3 years ago
A hiker is walking through a flat meadow, observing a mountain in
melomori [17]

Answer:

Un excursionista camina por un prado llano, observando una montaña a

lo lejos. Mide que el ángulo de elevación entre el suelo

y la cima de la montaña es de 25 grados. Camina 5 millas y luego

mide el ángulo de elevación nuevamente, ahora es de 40 grados. ¿Qué altura tiene

la montaña?

Step-by-step explanation:

5 0
3 years ago
Help, please<br> Simplify. √27x^2y^2
skelet666 [1.2K]

Answer:

3✓3xy

✓3^2×3x^2y^2

✓3xy ✓3

5 0
3 years ago
Read 2 more answers
Can someone help , please ?
Oxana [17]

a. 1.732

because if the number behind the number you are rounding is 5 or greater, you go up a number, but if it is less than 5, then you leave it the same. this applies to both problems.

b. 3.142

4 0
4 years ago
Read 2 more answers
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