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Cerrena [4.2K]
3 years ago
6

I just need help plz

Mathematics
2 answers:
Licemer1 [7]3 years ago
8 0

Answer:

1.4x 2 +7x−9

~#^××+$|₹-÷)=-₹2^_!&:'#^%&%&×(}/'?!24&0(86-

quester [9]3 years ago
4 0
1. 4x^2 + 7x - 9
2. 7x^5 + 5x^4 + 3x^2 - 3x - 5
3. 5x^4 + 2x^3 - 4x^2 - 9
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Which algebraic expression represents the phrase "two times the quantity of a number minus 12"? A. 2y - 12 B. 2(y -12) C. 2(y +
bazaltina [42]

Answer:

B

Step-by-step explanation:

Two times the quantity of a number minus 12.

Represent the number with the variable y.

The quantity of a number minus 12 is then: (y-12).

Two times this quantity is 2(y-12).

So the answer is 2(y-12), which is B.

5 0
3 years ago
A system of linear inequalities is shown below:
Yuki888 [10]
The 4th selection is appropriate:
  The first line is a dashed line which joins ordered pairs (-2, 1) and (3, 1). The second line is a dashed line and joins ordered pairs (-2, -2) and (3, 3). The portion common above the first line and above the second line is shaded

6 0
3 years ago
B Christian installed an electric pump to pump water from a borehole into a 30 000 litre cement dam. If the water is pumped at a
skelet666 [1.2K]

Given the amount of water needed to fill the cement dam and the water pump rate, the time needed to fill the dam is 400 minutes or 6hours 40minutes.

Option B)6h 40min is the correct answer.

<h3>How long does it take to fill the dam?</h3>

Given that;

  • Amount of water needed to fill the dam A = 30000 litres
  • Pump rate r = 75 litres per minute
  • Time needed to fill the dam T = ?

To determine how long it take to fill the dam, we say;

Time need = Amount of water needed ÷ Pump rate

T = A ÷ r

T = 30000 litres ÷ 75 litres/minute

T = 400 minutes

Note that; 60min = 1hrs

Hence,

T = 6hours 40minutes

Given the amount of water needed to fill the cement dam and the water pump rate, the time needed to fill the dam is 400 minutes or 6hours 40minutes.

Option B)6h 40min is the correct answer.

Learn more word problems here: brainly.com/question/2610134

#SPJ1

8 0
2 years ago
I need the distance show work please!
Leviafan [203]
For (-7,3) and (5,3) the answer is 12. You add the different points, -7 and 5 because one is negative and one is positive. You do not add 3 and 3 because they are the same.

(3,-6) and (3,-10) = 4 because -6 and -10 are negatives. The answer is always positive.

(8,0) and (8,-8) = 8.
5 0
3 years ago
Which of the following pairs have similar terms<br>-6y,7x / 13,9y / 2x,x3 / -2x,7x
photoshop1234 [79]

Step-by-step explanation:

-2x,7x and 2x,x3

look for the same variables or look if they both have a negative or a positive without a variable , example: -2.345 has the same terms as -5.99

5 0
3 years ago
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