Answer:
n + 3n
Step-by-step explanation:
If the unknown number is represented by n, then 3 times the unknown number is 3n.
The sum of n and 3n is written as ...
... n + 3n
_____
This can be simplified to 4n, but we believe the intent of the question is to see the sum, not the total.
Answer:
A
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k ) are the coordinates of the centre and r is the radius
here (h, k) = (5, 7) and r = 2 ⇒ r² = 4, hence
(x - 5)² + (y - 7)² = 4 → A
The correct answer to this question is: "1/2"
You are rolling a standard number cube with numbers from 1-6. There are 3 numbers that are more than or greater than 3. This means that the other half are lesser than 3.
P(number greater than 3) = 3 / 6 = 1 / 2
So the probability of getting a number greater than 3 is 1/2
The measures of the angles of the isosceles triangle are 55, 55 and 70.
Explanation:
An isosceles triangle has two congruent base angles and a vertex angle.
Let
b
=the measure of one of the base angles.
Let
v
=
the measure of the the vertex angle.
The vertex angle is 40 degrees less than the sum of the base angles.
v
=
b
+
b
−
40
=
2
b
−
40
The sum of the measures of the angles of a triangle is 180.
b
+
b
+
v
=
180
Substitute
2
b
−
40
for
v
.
b
+
b
+
2
b
−
40
=
180
4
b
−
40
=
180
+40+40
Combine like terms.
Add 40 to both sides.
4b=220
Divide by 4
4
b/4
=
220
/4
b
=
55
v
=
2
b
−
40
v
=
2
(
55
)
−
40
=
70
Answer:
148
Step-by-step explanation:
148 x 3 = 444
444 + 148 = 592
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