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kirill115 [55]
3 years ago
7

Mike fills his car’s tank with 20 gallons of regular gas at $2.87 per gallon. His car averages 25 miles per hour. Serena fills h

er car’s tank with 15 gallons of premium gas at $3.16 per gallon. Her car averages 30 miles per gallon. Compare the drivers’ unit costs of driving one mile.
Mathematics
1 answer:
Alex777 [14]3 years ago
6 0

Answer:


Step-by-step explanation: i rlly dont know dont worry someone will answer it for u!

all i know is the mike had a better deal of gas then Serena

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The ratio of the measures of the angles in a triangle is 6:4:2, find each angle. ​
vovikov84 [41]

Answer:

let ratio 6:4:2 be 6x,4x and 2x

we have

6x+4x+2x=180 sum of interior angle of the triangle is 180

12x=180

x=180/12=15

Step-by-step explanation:

missing Angle are

6x=6×15=<em><u>9</u></em><em><u>0</u></em><em><u>°</u></em>

4x=4×15=<em><u>6</u></em><em><u>0</u></em><em><u>°</u></em>

2x=2×15=<em><u>3</u></em><em><u>9</u></em><em><u>°</u></em>

3 0
2 years ago
What value of c makes the equation true? <br> (PLEASE HELP, and look at the picture)
Cloud [144]

Answer:

\displaystyle c = 8

General Formulas and Concepts:

<u>Pre-Algebra</u>

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

\displaystyle \frac{3}{6} = \frac{4}{c}

<u>Step 2: Solve for </u><em><u>c</u></em>

  1. Simplify [Reduce]:                                                                                             \displaystyle \frac{1}{2} = \frac{4}{c}
  2. [Multiplication Property of Equality] Cross-multiply:                                      \displaystyle c = 8
8 0
3 years ago
Read 2 more answers
27,490 to the nearest ten thousand
miv72 [106K]

Answer:

is the comma supposed to be a decimal point?

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Please help I don’t understand this
enyata [817]

Answer:

  d. √(1/(x+1))

Step-by-step explanation:

Just as operations can be performed on numbers and variables, so can operations be performed on functions. Here, you're asked to simplify the ratio of two functions.

  \displaystyle\left(\frac{g}{f}\right)(x)=\frac{g(x)}{f(x)}=\frac{\sqrt{x-1}}{\sqrt{x^2-1}}=\sqrt{\frac{x-1}{x^2-1}}

At this point, you're supposed to know the factoring of the difference of squares:

  \displaystyle=\sqrt{\frac{x-1}{(x-1)(x+1)}}=\boxed{\sqrt{\frac{1}{x+1}}}

4 0
2 years ago
Mark recorded the growth of a plant over 8 weeks. The equation y=0.2x+2 represents the height y, in inches, after x weeks.
klio [65]

Answer:

Step-by-step explanation:

The equation representing the growth of the plant after x weeks is expressed as

y = 0.2x+2

Where

x represents the number of weeks.

y represents the height of the plant after x weeks in inches.

A.

The height of the plant after week 3 was about 2.6 inches. We can check by substituting x = 3 into the equation. It becomes

y = 0.2 × 3 + 2 = 2 + 0.6 = 2.6 inches. It is correct.

B is incorrect.

C.

The height of the plant after week 9 was about 3.8 inches. We can check by substituting x = 9 into the equation. It becomes

y = 0.2 × 9 + 2 = 2 + 1.8 = 3.8 inches. It is correct.

D is incorrect

6 0
3 years ago
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