Answer: Telescopes use lenses or mirrors to collect and focus waves from the electromagnetic spectrum, including visible light, allowing us to look at celestial objects. By studying the electromagnetic waves given off by objects such as stars, galaxies, and black holes, astronomers can better understand the universe.
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
2
−
3
(
2
x
−
1
)
=
−
6
x
+
5
2
+
(
−
3
)
(
2
x
)
+
(
−
3
)
(
−
1
)
=
−
6
x
+
5
(Distribute)
2
+
−
6
x
+
3
=
−
6
x
+
5
(
−
6
x
)
+
(
2
+
3
)
=
−
6
x
+
5
(Combine Like Terms)
−
6
x
+
5
=
−
6
x
+
5
−
6
x
+
5
=
−
6
x
+
5
Step 2: Add 6x to both sides.
−
6
x
+
5
+
6
x
=
−
6
x
+
5
+
6
x
5
=
5
Step 3: Subtract 5 from both sides.
5
−
5
=
5
−
5
0
=
0
First box
<em>4/10</em>
0.4 divided by 1
0.4/1 *10
= 4/10
Box on top that's the point where it's 3 away from 4/10
<em>0.7</em>
Bottom
<em>7/10</em>
<em />
0.7 divided by 1
0.7/1*10
= 7/10
Next box
<em>0.9</em>
9/10
= 0.9
A) 20% of 449 = 89.8
B) 449 - 100 = 349
C) 449 - 75 = 374. 10% of 374 = 37.4. 374 = 336.6
D) 449 - 50 = 399. 20% of 399 = 79.8. 399 - 79.8 = 319.2
Hope this helps! :D
