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iVinArrow [24]
3 years ago
11

Determine if the set is the empty set. x | x > 7 and x < 10

Mathematics
1 answer:
Julli [10]3 years ago
7 0
The set contains the values of x between 7 and 10. If x is an integer, it contains 8 and 9
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What choices are solutions for equation x^2-3x = -5/4
Kryger [21]

Here's the solution,

=》

{x}^{2}  - 3x =  -  \dfrac{5}{4}

=》

{x}^{2}  - 3x +  \dfrac{5}{4}  = 0

now, let's multiply the whole equation with 4

=》

4 {x}^{2}  - 12x + 5 = 0

=》

4 {x}^{2}  - 10x - 2x + 5= 0

=》

2x(2x - 5) - 1(2x - 5) = 0

=》

(2x - 1)(2x - 5) = 0

so,

Case 1. where, 2x - 5 = 0

=》

x =  \dfrac{5}{2}

case 2. where, 2x - 1 = 0

=》

x =  \dfrac{1}{2}

8 0
3 years ago
Write this ratio as a fraction in simplest form without any units. 8 yards to 21 feet
Deffense [45]
8/7. You must turn yards into feet. There are three feet in a yard, so 24 overall. You then divide both 21 and 24 by 3 because it's the smallest common factor.
6 0
3 years ago
9th grade math help me understand please 20 points
Andrej [43]

Answer:

Lines 1 and 4 are parallel

Step-by-step explanation:

The image below shows the four lines graphed, and proves that lines 1 and 4 are parallel.

Hope this helps! :)

4 0
3 years ago
The question is in the picture!! pls help
evablogger [386]

Answer:

I HELPEDDDDDDDDD :D

Step-by-step explanation:

7 0
3 years ago
A man sold two jeans at Rs 800. On one he gains a profit of 10 percent on other he loses 15 percent how he gain or loses in whol
likoan [24]

Answer:

1st jean:

100%-> 800

110%->880

880-800=80 ( earned)

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

2nd jean:

100%->800

85%->680

800-680=120(lost)

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

120-80=40 (lost)

3 0
3 years ago
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