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2 years ago

Help me please ? Ill Mark brainlist

Mathematics

2 answers:

S_A_V [24]2 years ago

8 0

Answer:

D. 39000 m

Step-by-step explanation:

13 km * 3 week * 1000 m(=1 km) = 39000m

Tresset [83]2 years ago

7 0

Answer:

ching song

Step-by-step explanation:

blig blong

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Find the equation of a line perpendicular to y - 12 = 2x – 8 that passes through the point (2, 3). (answer in slope-intercept fo

Alla [95]

Answer:

$\displaystyle y=-\frac{1}{2}x+4$

Step-by-step explanation:

<u>Equation of a Line</u>

We can find the equation of a line by using two sets of data. It can be a pair of ordered pairs, or the slope and a point, or the slope and the y-intercept, or many other combinations of appropriate data.

We are given a line

$y - 12 = 2x -8$

And are required to find a line perpendicular to that line. Let's find the slope of the given line. Solving for y

$y = 2x +4$

The coefficient of the x is the slope

$m=2$

The slope of the perpendicular line is the negative reciprocal of m, thus

$\displaystyle m'=-\frac{1}{2}$

We know the second line passes through (2,3). That is enough information to find the second equation:

$y-y_o=m'(x-x_o)$

$\displaystyle y-3=-\frac{1}{2}(x-2)$

Operating

$\displaystyle y=-\frac{1}{2}(x-2)+3$

Simplifying

$\displaystyle y=-\frac{1}{2}x+4$

That is the equation in slope-intercept form. Intercept: y=4

8 0

2 years ago

Good science requires that you record your observations accurately.<br><br><br><br> TrueFalse

enyata [817]

Answer:

True.

Step-by-step explanation:

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2 years ago

What is the value of x if x/ 3 + 1 = -2 ?

Serga [27]

<h2>Answer:</h2><h3>x = -9</h3>

<h2>Step-by-step explanation:</h2>

<h3><u>Step 1</u>: Simplify both sides of the equation.</h3><h3 /><h3>1/3x+1=−2</h3><h3 /><h3><u>Step 2</u>: Subtract 1 from both sides.</h3><h3 /><h3>1/3x+1−1=−2−1</h3><h3 /><h3>1/3x=−3</h3><h3 /><h3><u>Step 3</u>: Multiply both sides by 3.</h3><h3 /><h3>3*(1/3x)=(3)*(−3)</h3><h3 /><h3>x=−9</h3>

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3 years ago

The diameter of a sphere is 6 cm. What is the volume of the sphere?

irinina [24]

Answer:

36pi

Step-by-step explanation:

the volume of a sphere is equal to 4/3 x pi x r^3

the radius is half of the diameter

3^3=27

27x4/3=36

36pi

6 0

2 years ago

Is 6/5 greater than 2/3

Natasha2012 [34]

Answer:

yes 6/5 is greater

Problem solving:

first you need to simply the fractions and see which one is bigger.

2/3 = 0.667

6/5 = 1.2

<em />

<em>-Sumin <3</em>

6 0

3 years ago

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