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3 years ago

SELECT TWOOOOOOOOOO ANSEWS NOT THREE NOT ONE I NEED TWO

Mathematics

2 answers:

DerKrebs [107]3 years ago

8 0

Answer: 2 and 4

Step-by-step explanation:

Norma-Jean [14]3 years ago

4 0

2 and 4 are the answers

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Two sisters like to compete on their bike rides. Tamara can go 4 mph faster than her sister, Samantha. If it takes Samantha 1 ho

Triss [41]

Answer:

16 mph

Step-by-step explanation:

You should first form equations related to this information

Given,Tamara can go 4 mph faster than her sister, Samantha

Lets take speed to ride a bike for Samantha to be= x mph

The speed to ride a bike for Tamara will be= x+4 mph

To cover a distance of 80 miles, Samantha takes 1 hour longer than Tamara

Introduce the formula for time; time=distance/speed=D/S where D is distance in miles and S is speed in miles per hour

Here time Samantha takes to cover a distance of 80 miles is 1 hour more than that taken by Tamara, hence

Time taken by Samantha

$=\frac{80}{x}$

Time taken by Tamara

$=\frac{80}{4+x}$

Equation for difference in time

$=\frac{80}{x} -\frac{80}{4+x} =1$

Solve the equation for difference in time to get value of x which is samantha speed

$=\frac{80}{x} -\frac{80}{x+4} =1\\\\\\=80(4+x)-80(x)=x(4+x)\\\\\\=320+80x-80x=4x+x^2\\\\\\=x^2+4x-320=0$

Solve quadratic equation by the quadratic formula where a=1,b=4 and c=-320

x=(-b±√b²-4ac)÷2a

x=(-4±√4²-4×1×-320)÷2×1

$x=\frac{-4+/-\sqrt{4^2-4*1*-320} }{2} \\\\\\x=(-4+/-\sqrt{1296} )/2\\\\\\x=\frac{-4+36}{2} =\frac{32}{2} =16$

Samantha speed is 16 mph

6 0

3 years ago

The formula to determine the asking price on a house is P=q+2n where q is the quality and n is the neighborhood. 1. Solve the eq

kotykmax [81]

1.q=p-2n
2.q=75000-2*20000
q=75000-40000
q=35000
3.p=90000+2*25000
p=90000+50000
p=140000

Hope this helps :)

8 0

3 years ago

Determine the measure of ∠θ using a trigonometric ratio. ANSWERS: A) 45.10° B) 1.00° C) 12.54° D) 17.38°

Levart [38]

Answer:

Step-by-step explanation:

angle A is 90 and c and b have to be equal

4 0

4 years ago

Solve for x. 2x + 5 = 27 What is the answer? 8.5 11 16 64

pishuonlain [190]

2x + 5 = 27
2x + 5 (-5) = 27 (-5)
2x = 22

2x/2 = 22/2

x = 11

hope this helps

5 0

3 years ago

Read 2 more answers

Find the value of two numbers if their sum is 17 and their difference is 3.

AVprozaik [17]

Step-by-step explanation:

x+y=17 (First equation)

x-y=3 (Second equation)

Solving Equation (i)

x+y=17

x=17-y(First equation)

Putting value of x in equation (ii)

x-y=3

x=3+y

17-y=3+y

17=3+y+y

17=3+2y

2y=17-3

y=14/2

y=7

Putting value of y in equation(i)

x=17-y

x=17-7

x=10

4 0

3 years ago