Answer:
Theres a website that can help
Step-by-step explanation:
Answer:
x = -16.
Step-by-step explanation:
x/-4 - (-8) = 12
x/-4 + 8 = 12
x/-4 = 12 - 8
x/-4 = 4
Cross multiply:
x = -4 * 4
x = -16.
Associate of multiplication I think
Answer:
60⁰
Step-by-step explanation:
A triangle has three angles.
The sum of its angles = 180⁰
[ By angle sum property ]
Let the unknown angle be 'x'
Then,
30⁰ + 90⁰ + x = 180⁰
120⁰ + x = 180⁰
x = 180⁰ - 120⁰
x = 60⁰
Therefore, the unknown angle will be equal to 60⁰
Answer:
Surface area of a sphere=4πr
2
=154cm
2
⇒4×
7
22
r
2
=154cm
2
⇒r
2
=
4
154
×
22
7
⇒r
2
=
4
49
⇒r=
4
49
∴r=
2
7
=3.5cm
Volume of the sphere=
3
4
πr
3
=
3
4
×
7
22
×(3.5)
3
=
21
88
×42.875=179.67cm
3
