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Makovka662 [10]
3 years ago
10

A battery was charged. When the changing began, it was 23 percent full. After 30 minutes of charging, the battery was 89 percent

full? How long did it take to fully charge in minutes?

Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
5 0
Attached the solution and work.

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A ladder leaning against a wall makes a 60° angle with the ground. The base of the ladder is 3 m from the building. How high abo
Marysya12 [62]

Answer:

The distance is 5.20m

Step-by-step explanation:

Here, we want to get the height of the ladder

To get this, we need to understand that we have a right triangle, with the base of the triangle as 3 m, the angle at the downward part is 60, and we want to get the height of the triangle

The angle here faces the height we want to calculate

This height is known as the opposite

What we have is the adjacent

Now, the trigonometric identity that relates the opposite and the adjacent is the tan

The tangent of an angle is the ratio of the opposite to the adjacent

Mathematically;

tan 60 = h/3

h = 3 tan 60

h = 5.20 m

The ladder is at a height of 5.20 m above the ground

7 0
3 years ago
What is the square root of 51.84​
bija089 [108]
The square root of 51.84 is 7.2
7 0
3 years ago
Solve.
Y_Kistochka [10]
Your answer is 7/8 bc 3+4=7
4 0
3 years ago
Help Pls! I need this fast!
lesya [120]

Answer: 36

Step-by-step explanation:

\overline{AB} \cong \overline{BC} (Triangle ABC is isosceles)

m\angle CAB=m\angle CBA=30^{\circ} (base angles of an isosceles triangle are congruent)

\angle MCB=90^{\circ} (In triangle CMB, angles in a triangle add to 180 degrees)

\angle ACM=30^{\circ} (triangle sum theorem)

MB=24 (30-60-90 triangle CMB)

AB=12 (sides opposite congruent angles in a triangle are congruent)

AB=36 (segment addition postulate)

3 0
2 years ago
Find the measure of the missing angles.<br> 135°<br><br> b =<br> C=
Lyrx [107]

Answer:

b=135

c=45

Step-by-step explanation:

3 0
2 years ago
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