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3 years ago

Lin rode her bike 2 miles in 8 minutes. She rode at constant speed what is the asnwer

Mathematics

1 answer:

sukhopar [10]3 years ago

7 0

The velocity is 4. You didn’t say what you needed to find but I’m pretty sure it’s that

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janine bought a portable CD player for $75. if the sales tax is 5%,what is the total cost of the CD player

Marina CMI [18]

Answer

78.75

Step-by-step explanation:

75.00 × 0.05

= 78.75

3 0

3 years ago

Pls help me solve this question, also include step by step calculation ya. Thks

sp2606 [1]

$\displaystyle\\Answer:\ x=\sqrt{2}\ \ \ \ \ x=-\sqrt{2}\ \ \ \ \ x=\frac{ln5}{2}$

Step-by-step explanation:

$5x^2-x^2e^{2x}+2e^{2x}=10$

$Let:\ x^2=t \ \ \ \ \ e^{2x}=v\\Hence,\\5t-tv+2v^2=10\\5t-tv+2v^2-10=10-10\\5t-tv-10+2v^2=0\\t(5-v)-2(5-v)=0\\(5-v)(t-2)=0\\5-v=0\\5-v+v=0+v\\5=v\\5=e^{2x}$

Prologarithmize both parts of the equation:

$ln5=lne^{2x}\\ln5=2x*lne\\ln5=2x*1\\ln5=2x\\$

Divide both parts of the equation by 2:

$\displaystyle\\x=\frac{ln5}{2}$

$t-2=0\\t-2+2=0+2\\t=2\\x^2=2\\x=\sqrt{2} \\x=-\sqrt{2}$

6 0

11 months ago

Infotron Inc makes electronic hockey and soccer games. Each hockey game requires 2 labor-hours of assembly and 2 labor-hours o

OlgaM077 [116]

Answer:

Infotron should produce each day 13 hockey and 6 soccer games

Step-by-step explanation:

x = Number of hockey games Infotron should produce

y = Number of soccer games Infotron should produce

Number of labor-hours for assembly = 2x + 3y

Number of labor-hours for testing = 2x + y

Now we can write our equations system, this way:

2x + 3y = 44

2x + y = 32

*********************

Expressing y in terms of x in the 2nd equation:

2x + y = 32

y = 32 - 2x

********************

Substituting y and solving for x in the 1st equation:

2x + 3y = 44

2x + 3 * ( 32 - 2x) = 44

2x + 96 - 6x = 44

-4x = 44 - 96

-4x = - 52

x = -52/-4

x = 13

*****************

Solving for y in the 2nd equation:

2x + y = 32

2 * 13 + y = 32

26 + y = 32

y = 32 - 26

y = 6

Infotron should produce each day 13 hockey and 6 soccer games

7 0

2 years ago

Seventeen minus the quotient of twelve and six is the equivalent to which of the following?

KATRIN_1 [288]

Answer:

It should be the first on the list 17 - 12/6

Step-by-step explanation:

if I replace the words in your sentence, you have

17 minus the 12/6

get

17 - 12/6

3 0

2 years ago

Ricardo has a sandbox in the shape of a cylinder 5 feet in diameter. He plans to fill the sandbox with sand to a depth of 0.5 fe

s344n2d4d5 [400]

Answer:

Step-by-step explanation:

6 0

2 years ago