3 years ago

What is the value of x in the solution to the system of linear equations?

Mathematics

2 answers:

blagie [28]3 years ago

8 0

It's -2 i have calculated it and that's what i got, if i'm wrong i'm sorry

AlexFokin [52]3 years ago

7 0

Answer:

The answer is: D) -3

Step-by-step explanation:

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A car travels 45km in an hour. In each of the next two hours, it travels 78km. What is the average speed of the car.

romanna [79]

Answer:

The average speed of car is 67 kilometers per hour.

Step-by-step explanation:

Given that:

Distance travelled in one hour = 45 km

Distance travelled in next 2 hours = 78*2 = 156 km

Total distance = 45+156 = 201

Total time = 1+2 = 3 hours

Average speed of the car = $\frac{Total\ distance}{Total\ time}$

Average speed of the car = $\frac{201}{3}$

Average speed of the car = 67 km/hr

Hence,

The average speed of car is 67 kilometers per hour.

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3 years ago

A 45-45-90 triangle has a hypotenuse of length 7. What is the length of one of its legs? If necessary, round your answer to two

harkovskaia [24]

If the legs are legnth x, then the hyptonuse is x√2

x√2=7
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times (√2)/(√2)
(7√2)/2
3.5√2
aprox 4.94974
round
4.95

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3 years ago

PLEASE HELP ITS TIMED<br> Order the rational numbers from least to greatest <br> -2/5,-4/3, -1/2, -1

IgorC [24]

Answer:

-2/5, -1/2, -1, -4/3

Step-by-step explanation:

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2 years ago

Tan(42)= x over 16<br> I need the answer and how ya got it pleasee

xz_007 [3.2K]

Answer:

14.40646471 =x

Step-by-step explanation:

tan (42) = x/16

Multiply each side by 16

16 tan 42 = x/16 *16

16 tan 42 = x

16 * .900404044 = x

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3 years ago

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soldi70 [24.7K]

> -1 2/3 ÷ (-2 1/5)
> -1.66.. ÷ -2.2
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Answer: 0.75

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3 years ago