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xenn [34]
3 years ago
7

John went on a bike ride to the store 4 miles away. If it took John 310 of an hour to get there and 12 of an hour to get back, w

hat was his average rate of speed (miles per hour) for the entire trip?
Mathematics
2 answers:
Kaylis [27]3 years ago
6 0

Answer:

/???

Step-by-step explanation:

Assoli18 [71]3 years ago
4 0

Answer:

10

Step-by-step explanation:

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What angles do perpendicular lines form
Natasha2012 [34]

Answer:

Perpendicular lines form 90 degree angles. It creates 4 of them, to be exact. Hope this helps! :)

7 0
3 years ago
Precal : Note: Triangle may not be drawn to scale. Suppose a = 3 and A = 15 degrees
drek231 [11]

Given:

In a right triangle at B,

\begin{gathered} a=3 \\ A=15^{\circ} \end{gathered}

To find:

The length of the sides b and c and angle B.

Explanation:

Using the trigonometric ratio,

\begin{gathered} sinA=\frac{a}{c} \\ \sin15^{\circ}=\frac{3}{c} \\ c=\frac{3}{\sin15^{\circ}} \\ c=11.59 \\ c\approx11.6 \end{gathered}

Using the trigonometric ratio,

\begin{gathered} \tan A=\frac{a}{b} \\ \tan15^{\circ}=\frac{3}{b} \\ b=\frac{3}{\tan15^{\circ}} \\ b=11.19 \\ b\approx11.2 \end{gathered}

Using the angle sum property,

The angle B becomes,

\begin{gathered} 90+15+B=180 \\ B=180-90-15 \\ B=75^{\circ} \end{gathered}

Final answer:

The values are,

\begin{gathered} b=11.2 \\ c=11.6 \\ B=75^{\circ} \end{gathered}

3 0
1 year ago
Given the angles in the diagram, who is closer to the treasure chest and why
Klio2033 [76]
Please see attached file for my answer.
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5 0
3 years ago
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Please help me with this algebra/geometry question!
sp2606 [1]
There is a app called photo mathyou should use it
7 0
3 years ago
Find the area of circle o if DCBO is a rectangle and DB measure 10 units
Dmitrij [34]

Answer:

100\pi

Step-by-step explanation:

Step 1: Identity the radius.

Since O is the center of the circle, and C and E lie on the circumference, OC and OE are the radii of the circle and thus,

OC=OE.

Step 2: Consider the rectangle.

All diagonals in a rectangle are congruent so this means

DB= OC ( OC is also a diagonal).

Thus, OC= 10 units.

Step 3: Analyze

So this means OE is also 10 units as well.

Since we know the length of the radius, Use the area of circle,

\pi {r}^{2}

\pi( {10}^{2} ) = 100\pi

So the area of a circle is 100 pi.

3 0
2 years ago
Read 2 more answers
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