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4 years ago

PLZZ HELP WILL GIVE MEDAL

Mathematics

1 answer:

bija089 [108]4 years ago

4 0

The correct answer is B. Hope this helps!

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Destiny can run one-eighth of a mile in three-quarters of a minute, and she can walk one-quarter of a mile in 4 minutes. How man

yarga [219]

Answer:

a) Destiny can run 1 mile is 6 minutes.

b) Destiny can walk back 1 mile is 16 minutes.

Step-by-step explanation:

The running rate of Destiny is

$(\frac{1}{8}) \textrm{mile in} (\frac{3}{4}) \textrm{minutes}$

So, she runs 1 mile in $8 \times (\frac{3}{4} )\textrm{minutes}$

= 6 minutes

Hence, Destiny can run 1 mile is 6 minutes.

The walking rate of Destiny is

$(\frac{1}{4}) \textrm{mile in} 4 \textrm{minutes}$

So, she walks 1 mile in $4 \times (4 )\textrm{minutes}$

= 16 minutes

Hence, Destiny can walk back 1 mile is 16 minutes.

4 0

3 years ago

PLEASE HURRY IM TIMED!!!

andriy [413]

Answer-

A. Brandon’s sound intensity level is 1/4th as compared to Ahmad’s.

Solution-

Given that, loudness measured in dB is

$L=10\log \frac{I}{I_0}$

Where,

I = Sound intensity,

I₀ = 10⁻¹² and is the least intense sound a human ear can hear

Given in the question,

I₁ = Intensity at Brandon's = 10⁻¹⁰

I₂ = Intensity at Ahmad's = 10⁻⁴

Then,

$L_1=10\log \frac{I_1}{I_0}=10\log \frac{10^{-10}}{10^{-12}}=10\log \frac{1}{10^{-2}}=10\log 10^{2}=2\times10\log 10=20$

$L_2=10\log \frac{I_2}{I_0}=10\log \frac{10^{-4}}{10^{-12}}=10\log \frac{1}{10^{-8}}=10\log 10^{8}=8\times10\log 10=80$

$\therefore \frac{L_1}{L_2} =\frac{20}{80} =\frac{1}{4}$

5 0

3 years ago

Which of the following has four faces

Marysya12 [62]

C. The Tetrahhedron has 4 faces, all of which are triangles. It also has four vertices and six edges.

3 0

3 years ago

Read 2 more answers

(3x/5-7)+7 is equal to what

Elena L [17]

(3x/5-7)+7

= (3x/-2) + 7

= -3x/2 + 7

5 0

3 years ago

A box of laundry detergent is on sale for $6.50. If this price represents a 40% discount from the original price, what is the or

Mademuasel [1]

$10.83 because you need to divide 6.50 by .6 to get that answer approximately.

4 0

4 years ago