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3 years ago

What should the expression xy - 2x + z look like when you substitute in the values x

Mathematics

2 answers:

Sidana [21]3 years ago

6 0

Answer: 4 * -1 - 2 * 4 + 2

Natali5045456 [20]3 years ago

5 0

(4)(-1) - 2(4) + 2

Just plug the numbers into the variables

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Find the exact value of tan(pi/12) using the sum and difference formulas

kari74 [83]

Π/12 is half of π/6, which is 30 degree
tan(α/2)=(1-cosα)/sinα)
plug in the values: tan(π/12)=(1-cosπ/6)/sin(π/6)=(1-√3/2)/(1/2)=2-√3

7 0

3 years ago

Read 2 more answers

What a the circumstance of this circle

Ronch [10]

Answer:

See below.

Step-by-step explanation:

The circumstance is that the circle started out as a sphere. It was taking a walk down the street. A piano fell on it, squashed it, and it became a circle.

6 0

3 years ago

Determine the x-intercept(s) of the rational function: <br> f(x) = (x ^ 2 - 16)/(x ^ 2 - 2x - 3)

elena55 [62]

Answer:

(-4,0) and (4,0)

Step-by-step explanation:

The x-intercepts occur for values of x where f(x) = 0.

f(x) = 0 when the nominator ( $x^{2} - 16$ ) = 0.

$x^{2} -16$ is a difference of squares,
so you can factor it as (x + 4)(x – 4)

When x = –4 or x = 4, the nominator is 0, and f(x) = 0

3 0

2 years ago

Write in standard form

Natalka [10]

Answer:

2.988*10^8

Step-by-step explanation:

to do standard form you have to move the decimal to after the first number so in this case we would move the decimal 8 places from 298800000.0

to 2.98800000 and we can remove the zeros to make it 2.988

then you will plug the times ten and because we move the decimal over 8 it would be 10 to the power of 8 so your answer would be 2.988*10^8

hope this helps have a good day

<em>brainlest please? :)</em>

5 0

2 years ago

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joes family has compleated 60% of a road trip. if they have traveld 30 miles, how far is the full road trip?

Tems11 [23]

The full road trip is 50 miles.

Step-by-step explanation:

Given,

Distance traveled by Joe's family = 30 miles

This represents 60% of the total distance to be traveled.

Let,

x be the total distance.

60% of x = 30

$\frac{60}{100}*x=30\\0.6x=30$

Dividing both sides by 0.6

$\frac{0.6x}{0.6}=\frac{30}{0.6}\\x=50\ miles$

The full road trip is 50 miles.

Keywords: percentage, division

Learn more about percentages at:

#LearnwithBrainly

4 0

3 years ago