Answer:
I got -y^2 - 9y -4 (I hope it helps)
Step-by-step explanation:
4y^2 - 5y^2= -y^2
7-11= -4
-6y + -3y= -9y
-y^2 -9y -4
Answer:
I can't see the equations but I can give you one
Step-by-step explanation:
1150 = 5y + 10a

<h2>Given :- </h2><h2 />
- Side of the square field = 70m
- Length of the rectangular field = 90m
- Breadth of the rectangular field = 60m
<h2>To Find :-</h2>
- Perimeter of the square field
- Perimeter of the rectangular field
<h2>Solution :-</h2>
Perimeter of the square = 4 × side
By substituting values,
⇒ 4 × 70m
➥ 280m
<h3><u>Hence, </u><u>Faliha</u><u> runs 280m around a Square </u><u>field</u></h3>
Perimeter of the rectangle = 2( length + Breadth)
By substituting values,
⇒ 2( 90m + 60m )
⇒ 2( 150m)
➥ 300m
<h3><u>Hence, Rameen runs 300m around a rectangular field</u></h3>
By comparing perimeters, Rameen runs more than Faliha
Distance runs more by rameen = Distance covered by rameen - distance covered by faliha
By substituting values,
⇒ 300m - 280m
➠ 20m
<h3><u>Hence, </u><u>Rameen</u><u> runs more around a rectangular field by 20</u><u>m</u></h3>
<u>
</u>
Answer: The volume of given substance is
.
Step-by-step explanation:
Given: Density = 10.7 
Mass = 23.54 g
Density of a substance is the mass of substance divided by its volume.
Mathematically, 
Substitute the values into above formula to calculate volume as follows.

Thus, we can conclude that the volume of given substance is
.
There must be a mistake in your question:
If 3 x ≤ 9, then : x ≤ 3 and :
x + 4 > 2
x > 2 - 4
x > - 2
Answer: D)
Solution set : - 2 < x ≤ 3