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natulia [17]
4 years ago
5

translate the phrase:""Three times the difference of a number and 9" " into an algebraic expression .Let x represent the real nu

mber...
Mathematics
1 answer:
erastovalidia [21]4 years ago
6 0
3(x-9) that is the answer to this one.
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What is the difference of -2.2 and 0.44?
garri49 [273]
One is negative and the other is positive and one has a whole number, and the other only has a decimal
8 0
3 years ago
Read 2 more answers
A cone has a radius of 9 and a height of 22. What is the approximate volume of the cylinder? Round to the nearest tenth where ne
ryzh [129]

Answer

Answer: Volume = 9025.8 cm³

Step-by-step explanation:

--------------------------------------------------------

Find Radius :

--------------------------------------------------------

Base area = πr²

169π = πr²

r² = 169

r = √169

r = 13 cm

--------------------------------------------------------

Find height :

--------------------------------------------------------

Height = 13 + 4

Height = 17 cm

--------------------------------------------------------

Find Volume :

--------------------------------------------------------

Volume = πr²h

Volume = π(13)²(17)

Volume = 9025.8 cm³

--------------------------------------------------------

Answer: Volume = 9025.8 cm³

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8 0
3 years ago
What is an equation of the line that passes through (2,2) and is parellel to the line y=7x
laila [671]

Answer:

Therefore, equation of the line that passes through (2,2) and is parellel to the line y=7x is y=7x-12

Step-by-step explanation:

Given:

a line y=7x

To Find:

Equation of line passing through ( 2, 2) and is parellel to the line y=7x

Solution:

y=7x     ...........Given

Comparing with,

y=mx

Where m =slope

We get

Slope = m = 7

We know that parallel lines have Equal slopes.

Therefore the slope of the required line passing through (2 , 2) will also have the slope = m = 7.

Now the equation of line in slope point form given by

(y-y_{1})=m(x-x_{1})

Substituting the points and so we will get the required equation of the line,

(y-2)=7(x-2)=7x-14\\\\y=7x-12......Equation\ of\ line

Therefore, equation of the line that passes through (2,2) and is parellel to the line y=7x is y=7x-12

4 0
3 years ago
Khan academy: Point C is the image of C (-4,-2) under a reflection across the y-axis.
Korvikt [17]

<u>Answer:</u>

The coordinates of point C' are (4, -2)

<u>here's why:</u>

When you reflect a point across the y-axis, the y-coordinate remains the same, but the x-coordinate is taken to be the additive inverse. The reflection of point (x, y) across the y-axis is (-x, y). So if we use this information with the original coordinates, (-4, -2), the new coordinates will be (4, -2).

7 0
3 years ago
An isosceles triangle has an angle that measures 134°. Which other angles could be in that isosceles triangle?
AnnZ [28]

Answer:

23^{o} and 23^{o}

Step-by-step explanation:

An isosceles triangle has two of its sides and angles to be equal. Let each of the unknown equal angles be represented by x. Since one of its angles measures  134°, then;

x + x +  134° = 180^{o}

2x + 134° = 180^{o}

2x = 180^{o} - 134°

    = 46

x = \frac{46}{2}

  = 23^{o}

x = 23^{o}

The other angles that could be in the isosceles triangle are 23^{o} and 23^{o}.

3 0
3 years ago
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