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ser-zykov [4K]
3 years ago
15

Magnitude of an earthquake M = log1

Mathematics
1 answer:
belka [17]3 years ago
6 0
M = 4
Because the base of log is 10
10,000 is 10*4, and we know that log 10,000 =4, so M=4
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X + 2y = –6<br> 3x + 8y = –20
Kay [80]
What do you want to calculate?

CALCULATE IT!
Solve
Graph
Lesson

Problem:
Solve
x
+
2
y
=
−
6
;
3
x
+
8
y
=
−
20
Steps:
I will solve your system by substitution.
(You can also solve this system by elimination.)
x
+
2
y
=
−
6
;
3
x
+
8
y
=
−
20
Step: Solve
x
+
2
y
=
−
6
for x:
x
+
2
y
+
−
2
y
=
−
6
+
−
2
y
(Add -2y to both sides)
x
=
−
2
y
−
6
Step: Substitute
−
2
y
−
6
for
x
in
3
x
+
8
y
=
−
20
:
3
x
+
8
y
=
−
20
3
(
−
2
y
−
6
)
+
8
y
=
−
20
2
y
−
18
=
−
20
(Simplify both sides of the equation)
2
y
−
18
+
18
=
−
20
+
18
(Add 18 to both sides)
2
y
=
−
2
2
y
2
=
−
2
2
(Divide both sides by 2)
y
=
−
1
Step: Substitute
−
1
for
y
in
x
=
−
2
y
−
6
:
x
=
−
2
y
−
6
x
=
(
−
2
)
(
−
1
)
−
6
x
=
−
4
(Simplify both sides of the equation)
Answer:
x
=
−
4
and
y
=
−
1
3 0
3 years ago
If you roll a six-sided dice, what is the probability of rolling an odd number?
fomenos

Step-by-step explanation:

A six sided dice contains even numbers on three sides and odd numbers on remaining three sides.

Therefore,

Probability of rolling an odd number

=  \frac{3}{6}  \\ \\   =  \frac{1}{2}

5 0
3 years ago
Read 2 more answers
Let f(x)=3x+5 and g(x)=x^2 find f(x).g(x)
Alina [70]
Assuming you want them multiplied


f(x)*g(x)=(3x+5)(x^2)=3x³+6x²
6 0
3 years ago
Please help me asap :)!!​
geniusboy [140]

Answer:

EFG = 90 degrees

GDH = 45 degrees

FEG = 45 degrees

DHG = 90 degrees

Step-by-step explanation:

3 0
3 years ago
Trig if line segment AB =20 and line segment AC=8, find
Nina [5.8K]

Answer:

23.6 or A

Step-by-step explanation:

We have sin already. 8/20

We use inverse sin of 0.4 (8/20)

The answer of inverse sin is 23.57817848

or 23.6

8 0
3 years ago
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