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3 years ago

What’s the missing number for this equation:)

Mathematics

2 answers:

Softa [21]3 years ago

7 0

${\red\star}\:{\underline{\underline{\mathfrak{\purple{hello}}}}}\:{\red\star}$

$140x = 8400$

$\frac{140x}{140} = \frac{8400}{140}$

$x = 60$

Our answer is 60.

Good luck.

Annette [7]3 years ago

3 0

Answer:

140 x X =8400

X=8400/140

X= 60

140 x 60 =8400

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Read 2 more answers

State the domain restriction(s) in interval notation of \displaystyle f\left(g\left(x\right)\right)f(g(x)) given: \displaystyle

DENIUS [597]

Answer:

The interval notation for the domain is $[\frac{23}{3},\infty ]$ .

Step-by-step explanation:

Consider the provided information.

It is given that $\:f\left(x\right)=\sqrt{3x-2},\:\text{ and }\:g\left(x\right)=x-7$

We need to find the value of $f\left(g\left(x\right)\right)$ .

Put the value of g(x) in $f\left(g\left(x\right)\right)$ .

$f\left(g\left(x\right)\right)=f(x-7)$ ....(1)

Now, put x=x-7 in $\:f\left(x\right)=\sqrt{3x-2}$

$\:f\left(x-7\right)= \sqrt{3(x-7)-2}$

$\:f\left(x-7\right)= \sqrt{3x-21-2}$

$\:f\left(x-7\right)= \sqrt{3x-23}$

From equation 1.

$f\left(g\left(x\right)\right)=\:f\left(x-7\right)= \sqrt{3x-23}$

The domain of the function is the set of input values for which a function is defined.

Here, the value of $3x-23$ should be greater or equal to 0 as the square root of a negative number is not real.

Domain= $3x-23\geq0$

$x\geq\frac{23}{3}$

The value of x is all real number greater than $\frac{23}{3}$ .

Hence, the interval notation for the domain is $[\frac{23}{3},\infty ]$ .

7 0

3 years ago

432 lb. =______kg<br> Plz help stuck

makvit [3.9K]

432 lb = 195.95 kg

All you have to do is use the conversion rate for pounds to kilograms. Have a nice day :)

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3 years ago

Lance is a 60-kg runner who, on a good day, runs at a speed of 5 m/s. What is his kinetic energy when he runs at this speed?

Rom4ik [11]

Answer: 750 Joules.

Step-by-step explanation:

Use the equation: K = 1/2 x m x s^2

1/2 x 60 = 30.

30 x (5 x 5) 25 = 750

Lance's kinetic energy when he runs at this speed is 750 Joules.

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3 years ago