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3 years ago

San airplane on autopilot took 9 hours to travel 6, 489 kilometers. What is the unit rate for kilometers per hour

Mathematics

2 answers:

Basile [38]3 years ago

6 0

6,489 km/9 hr = 721 km/hr

Zina [86]3 years ago

3 0

You just have to divide 6, 489 by 9.

$6489/9=721$

The answer is 721 kilometers per hour.

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At a baseball game, a vender sold a combined total of 104 sodas and hot dogs. the number of sodas sold was three times the numbe

Reil [10]

You have to set up a system of equations

x+y=104
3x-y=104

Sodas = 78
Hotdogs = 26

7 0

3 years ago

What is the value of 4/5(8+7)-2/3(8+7)

Nikolay [14]

Answer:

The answer is 2.

Hope this helps and if you could mark this as brainliest. Thanks!

5 0

3 years ago

Here you go please show your work

ValentinkaMS [17]

A. F(x)= 3x+6 =12
3x = 12-6
3x = 6
x=2

B. x=10, f(x)= 3*10+6 = 30+6 = 36

C. f(x) = 3x+6 = 6
3x = 6-6
3x=0
x=0

D. x=5, f(x) = 3x+6 = 3*5+6 = 15+6 = 21

5 0

3 years ago

What is the slope of the line through the points (1,5) and (-2,-4)?

olasank [31]

Answer:

slope = 3

Step-by-step explanation:

Use the coordinates of the points to determine the slope.

3 0

2 years ago

What is 4.3(v+2.5)=8.11+4v

True [87]

Answer:

-8.8

Step-by-step explanation:

We begin by simplifying the parenthesis through multiplication. Parenthesis is a structure which signals multiplication happening.

$4.3(v+2.5)=8.11+4v\\4.3v+10.75=8.11+4v$

We now begin combining like terms across the equal sign by performing the inverse or doing the opposite. Move first the 8.11 by subtracting it from both sides.

$4.3v+10.75-8.11=8.11-8.11+4v\\4.3v+2.64=4v$

Now, move 4.3v across by subtracting it from both sides.

$4.3v-4.3v+2.64=4v-4.3v$

$2.64=-0.3v$

Finally, we divide both sides by the coefficient of v.

$\frac{2.64}{-0.3} =\frac{-0.3v}{-0.3} \\-8.8=v$

6 0

3 years ago