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labwork [276]
3 years ago
15

Ms. Garcia drove 80 miles in March. She drove 4 times as many miles in March as she did in January. She drove 2 times as many mi

les in February as she did in January. How many miles did Ms. Garcia drive in February?
Mathematics
1 answer:
Yuri [45]3 years ago
4 0
March = 80 miles
January = 4 x 80 miles = 320 miles
January = 2 x (February) miles

Hence, (February) = 320 miles / 2 = 160 miles
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Use the Distributive Property​ to simplify the expression<br> 4(​c​ - 2)
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Answer

Step-by-step explanation:

4xc=4c

4x-2= -8

4c-8

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3 years ago
Find the sale price.<br> Original price: $50<br><br> Discount: 15%<br><br> Sale Price Is:
White raven [17]
The correct answer would be 42.50

Work:

50 divided by 100 = .5

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50 - 7.5 = 42.50.
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4 years ago
The numbers of teams remaining in each round of a single-elimination tennis tournament represent a geometric sequence where an i
Anit [1.1K]

Answer:

a_n = 128\bigg(\dfrac{1}{2}\bigg)^{n-1}

Step-by-step explanation:

We are given the following in the question:

The numbers of teams remaining in each round follows a geometric sequence.

Let a be the first the of the geometric sequence and r be the common ration.

The n^{th} term of geometric sequence is given by:

a_n = ar^{n-1}

a_4 = 16 = ar^3\\a_6 = 4 = ar^5

Dividing the two equations, we get,

\dfrac{16}{4} = \dfrac{ar^3}{ar^5}\\\\4}=\dfrac{1}{r^2}\\\\\Rightarrow r^2 = \dfrac{1}{4}\\\Rightarrow r = \dfrac{1}{2}

the first term can be calculated as:

16=a(\dfrac{1}{2})^3\\\\a = 16\times 6\\a = 128

Thus, the required geometric sequence is

a_n = 128\bigg(\dfrac{1}{2}\bigg)^{n-1}

4 0
3 years ago
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Answer:

C?

Step-by-step explanation:

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3 years ago
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(x+7)^2+9=0<br><br> Find x with quadratics
Ne4ueva [31]

Answer:

x = -7 ±3i

Step-by-step explanation:

(x+7)^2+9=0

Subtract 9 from each side

(x+7)^2+9-9=0-9

(x+7)^2=-9

Take the square root of each side

sqrt((x+7)^2) = ±sqrt(-9)

We know sqrt(ab) = sqrt(a) sqrt(b)

x+7 = ±sqrt(-1) sqrt(9)

We know that sqrt(-1) is the imaginary number i

x+7 = ±i *3

x+7 =±3i

Subtract 7 from each side

x+7-7 = -7 ±3i

x = -7 ±3i

6 0
4 years ago
Read 2 more answers
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