A girl takes 6 hours to ride 38.4 kilometers what is her speed

Mathematics

2 answers:

miss Akunina [59]3 years ago

8 0

I'm not sure but i think its 6.4km per hour

Ilia_Sergeevich [38]3 years ago

8 0

6.4 km an hour. I hope that Helps.

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Factor completely 9-6a-24a^2

Natasha_Volkova [10]

-24a²- 6a +9 = - 3(8a² +6a - 9)

8a² +6a - 9 =0

x=(-b +/-√(b² - 4ac))/2a
x = (-6 +/-√(36+4*8*9) /(2*8) = (-6 +/-√(324)  /16 =  (-6 +/-18)/16
x1 =  (-6 +18)/16 = 0.75
x2 =  (-6 -18)/16 = - 1.5

-24a²- 6a +9 = - 3(8a² +6a - 9) = -3(a - 0.75)(a + 1.5)

7 0

3 years ago

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Solve for x 10 * 90⁰ 26

musickatia [10]

Answer:

x=24

Step-by-step explanation:

x=√(26)²-(10)²

x=√676-100

x=√576

x=24

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2 years ago

Evaluate: 36^(-3/2)

Sveta_85 [38]

Evaluating 36^(-3/2) utilizes the laws of exponents. Raising a number by a negative exponent is raising the reciprocal of the number by the exponent: 36^(-3/2) = (1/36)^(3/2).

We could separate 3/2 into 3/2 = 1/2 * 3, and further simplify the expression

= ((1/36)^(1/2))^3= (1/6)^3= 1/216

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

4 0

3 years ago

In 2004, it was reported that "the relationship between body mass, M, and standard metabolic rate, B, among living organisms rem

lesya692 [45]

The answer is 8884.37 times

In many cases, B is approximately proportional to the three-quarters power of M:
 $B= M^{3/4}$

Elephant:
M1 = 4.6 mt = 4.6 * 1,000,000 g = 4,600,000 g
 $B1= 4600000^{3/4}=99327.24$

Mouse
M2 = 25 g
$B2= 25^{3/4}=11.18$

determine how many times greater the metabolic rate of an elephant is than that of a mouse:
B1/B2 = 99327.24 / 11.18 = 8884.37 times

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3 years ago

360 kilometers is 24% of how many kilometers

gogolik [260]

You use the butterfly method:
360 24
___ ___
X 100

multiply 360 by 100 to get 36000
then divide by 24 to get 1500

6 0

3 years ago