Answer:
Please find the answer in the explanation
Step-by-step explanation:
RULER
measurements taken by ruler can be limited due to absolute errors, zero error and uncertainties.
1.) If the end of the ruler is worn out giving rise to a zero error
2.) The calibration of the ruler may give rise to another systematic error if the makings are incorrect.
3.) If the object to be measured is not on the same level as graduated surface of the ruler, the angle at which the scale is viewed will affect the result. This is known as parallax error.
SCALE
Systematic error can occur in a scale when the scale is wrongly calibrated.
Also, reading a scale from different angles introduces a variable parallax error.
random uncertainty could be a parallax error caused by taking readings from different angles. This can be reduced by the use of a mirror behind the scale and viewing normally.
The answer is 30 i believe i rewrote it 3 times to check
Explanation:
3
x
+
y
=
2
−
x
−
3
y
=
6
⇒
−
6
−
3
y
=
x
Substitute this equation into the other system wherever you see
x
.
3
(
−
6
−
3
y
)
+
y
=
6
Distribute
3
onto
(
−
6
−
3
y
)
−
18
−
9
y
+
y
=
2
Combine alike terms
−
8
y
=
20
Divide to solve for
y
−
8
y
−
8
=
20
−
8
⇒
y
=
−
20
8
Then solve for
x
using the value of
y
.
−
x
−
60
8
=
6
x
=
−
108
8
y
=
−
20
8
<span>3⋅2−3⋅0.9h+1.3h−4⇒</span>
<span>6−2.7h+1.3h−4⇒</span>
<span>6−4−2.7h+1.3h⇒</span>
<span>2−1.4<span>h</span></span>
<span><span>This is the answer.</span></span>
Answer:
No, she couldn't have scored only two goals because that would mean Kenny scored six and 2 + 6 does not equal 12.
Step-by-step explanation:
Let x = Number of goals Carrie scored
Let 3x = Number of goals Kenny scored (three times Carrie)
Now we set up an equation showing that they both scored a sum of 12 goals.
3x + x = 12
Combine like terms
4x = 12
Divide both sides by 4 to isolate variable x
x = 12/4
x = 3
Carrie scored 3 goals. So your answer is no.
