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grin007 [14]
3 years ago
10

Sisters Rosey and Valerie specialize in two different triathlon events. Rosey finds that her average cycling speed is 7 mph fast

er than Valerie's average running speed.
Rosey can cycle 32 miles in the same time that it takes Valerie to run 18 miles.
If Valerie's running speed is n miles per hour, solve for n.
Mathematics
1 answer:
Musya8 [376]3 years ago
6 0

Valerie's running speed is 16 miles per hour.

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In the figure CD is the perpendicular bisector of AB . If the length of AC is 2x and the length of BC is 3x - 5 . The value of x
Dennis_Churaev [7]

Answer

Find out the value of x .

To proof

SAS congurence property

In this property two sides and one angle of the two triangles are equal.

in the Δ ADC and ΔBDC

(1) CD = CD (common side of both the triangle)

(2) ∠CDA = ∠ CDB = 90 °

( ∠CDA +∠ CDB = 180 ° (Linear pair)

as given in the diagram

∠CDA  = 90°

∠ CDB = 180 ° - 90°

∠ CDB = 90°)

(3) AD = DB (as shown in the diagram)

Δ ADC ≅ ΔBDC

by using the SAS congurence property .

AC = BC

(Corresponding sides of the congurent triangle)

As given

the length of AC is 2x and the length of BC is 3x - 5 .

2x = 3x - 5

3x -2x =5

x = 5

The value of x is 5 .

Hence proved


7 0
3 years ago
Read 2 more answers
$1,200, 3.9, 8 months
Kryger [21]
Are you working with simple interest?
3 0
3 years ago
What is the slope of the line represented by the equation y=x/3-5
Nana76 [90]

Answer:

a. 1/3

Step-by-step explanation:

y=x/3-5  (rewrite x - term)

y = (1/3) x + 5

recall that in the slope-intercept form of  a linear equation y = mx + b

m is the slope.

In our case, we can clearly see that slope  m = (1/3)

8 0
3 years ago
Question 25 the sum of three numbers is 79 . the second number is 9 less than the first. the third number is 2 times the first.
g100num [7]
I believe the numbers are 22, 13, and 44.
4 0
3 years ago
A sandbox has an area of 10 2/3 square feet, and the length is 1/4 feet. What is the width of the sandbox?
AlekseyPX

Answer:

The width of the sandbox is 42\frac{2}{3} \ ft.

Step-by-step explanation:

Given,

Area of the sandbox = 10\frac{2}{3}=\frac{32}{3}\ ft^2

Length = \frac{1}{4}\ ft

Solution,

Let the width of the sandbox be 'w'.

Since the sandbox is in shape of rectangle.

So we use the formula of area of rectangle.

Area = Length\times Width

On substituting the given values, we get;

\frac{1}{4}\times w=\frac{32}{3}\\

By cross multiplication method, we get;

w=\frac{32\times4}{3\times 1} =\frac{128}{3} =42\frac{2}{3} \ ft

Hence The width of the sandbox is 42\frac{2}{3} \ ft.

5 0
3 years ago
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