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2 years ago

What is the exact value of x?

Mathematics

1 answer:

Nadya [2.5K]2 years ago

8 0

Exact value of x will be 8 x sin(60)

Exact value of sin 60 = √3/2

So √3/2 x 8= 8 √3/2

Can be simplified to 4 √3

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7 more than 3 multiplied by x algebraic expression

Karolina [17]

Answer:

3x + 7

Step-by-step explanation:

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3 years ago

Write an equation of the line below.

katrin [286]

Hello!

The equation would be y= -2/6x + (-3). Since, the y-intercept is -3 and the slope/growth is -2/6 (it's decreasing).

To find the slope just make a growth triangle. We go down twice (then to the right 6 times).

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3 years ago

Two trains leave stations 306 miles apart at the same time traveling toward each other one is traveling at 90 mph the other at 8

Sergeu [11.5K]

Answer:

They will meet in 1.8 hours.

Step-by-step explanation:

Given that, distance between trains = 306 miles

Let they take time $'t'$ to meet each other.

Speed of first train = 90 mph

Speed of second train = 80 mph

Let distance traveled by first train = $D_1$ miles

Formula for distance:

$Distance = Speed \times Time$

Distance traveled by first train, $D_1 = 90t$

Let distance traveled by first train = $D_2$ miles

Formula for distance:

$Distance = Speed \times Time$

Distance traveled by first train, $D_2 = 80t$

Total distance traveled is 306 miles.

i.e.

$D_1+D_2=306\\\Rightarrow 90t +80t=306\\\Rightarrow 170t=306\\\Rightarrow t =\dfrac{306}{170}\\\Rightarrow \bold{t=1.8\ hr}$

They will meet in 1.8 hours.

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3 years ago

What is 25% of 10....

Gekata [30.6K]

Answer: 2.5

10 X 25%

25% = 25/100 = 0.25

10x0.25 = 2.5

Hope this helps!!

8 0

3 years ago

Read 2 more answers

-87 1/8 as a decimal number

Dmitrij [34]

$\frac{1}{8}=\frac{1\cdot125}{8\cdot125}=0.125\\\\-87\frac{1}{8}=-87.125$

3 0

3 years ago

Read 2 more answers