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Firlakuza [10]
3 years ago
5

Which expression is equivalent to 1−2/3^−3 ?

Mathematics
1 answer:
HACTEHA [7]3 years ago
8 0

Answer:

=-19/8

Step-by-step explanation:

1-(2/3)^{-3}=1-(3/2)^3=

1-27/8=(8-27)/8=

=-19/8

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Solvex2<br> - 4x=21 <br> using the zero product property.
Ierofanga [76]

Answer:

The answer is (x + 3) (x - 7) = 0

Step-by-step explanation:

x² - 4x = 21

x² - 4x - 21 = 0

x² - 7x + 3x - 21 = 0

x(x - 7) + 3(x - 7) = 0

(x + 3) (x - 7) = 0

Thus, The answer is (x + 3) (x - 7) = 0

<em><u>-TheUnknownScientist</u></em>

5 0
2 years ago
A method for determining whether a critical point is a minimum. True or false?
natita [175]

Answer:

We can find if a critical point is a local minimum or maximum by looking at the second derivatives.

Step-by-step explanation:

If you take the first derivative, you will find the slope at the given point, which if it is a minimum or a maximum will be 0.

Then we take the second derivative. If that number is a positive number, then we have a local minimum. If it is a negative number, then it is a local maximum.

7 0
3 years ago
On the coordinate grid of a map, Josie's house is located at (2,7). Her school is located at (-5,5). If each map unit equals one
oksian1 [2.3K]
To find the distance you would use the distance formula which is:
d =  \sqrt{(x2-x1)^{2}+(y2-y1)^{2}} =  \sqrt{(2-(-5))^{2}+(7-5)^{2}}

This equals:
d =  \sqrt{(7)^{2}+(2)^2} =  \sqrt{49+4} =  \sqrt{53} = 7.2801
7 0
3 years ago
Read 2 more answers
Hello i need help with these questions asap!!
makvit [3.9K]

We use direct proportionality:

360⁰......Pi×R² (full circle)

120⁰.......x

x=120×pi×R²/360=pi×R²/3

x=pi×4²/3=16.76mi²

A=3×pi cm², for an angle of 2×pi/3=120⁰

In a similar way we compute the area of the full circle:

360.........x

120..........3×pi

x=3×pi×360/120=9×pi=3²×pi.

Thus the radius is 3cm.

3 0
2 years ago
A quilt is designed using a square pattern. Each square contains two rectangles. Each rectangle contains a shaded rhombus.
leva [86]

The sum of angles in any Rhombus is 360 degrees.Opposite angles of a rhombus are congruent.

Two of the adjacent angles are 2x+20 and 50 degrees.

The opposite angles measure 2x+20 and 50 degrees.

Sum of angles in any Rectangle is 360

2x+20+50+2x+20+50=360

Adding line terms,

4x+140=360

Subtracting 140 both sides:

4x=220

Dividing both sides by 4

x=55

Option B. 55  is the right answer.

8 0
3 years ago
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