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3 years ago

Find the 11th term of this sequence. -10,20,-40,80...

Mathematics

2 answers:

Morgarella [4.7K]3 years ago

6 0

The difference is not constant therefore there cannot be an 11th term that is correct.

Pani-rosa [81]3 years ago

5 0

Answer:

-10240

Step-by-step explanation:

Look at the numbers. (-10(-2) = 20. (20)(-2) is -40. (-40)(-2) is 80. Keep multiplying it by -2 to get your 11th term.

If done correctly, your answer is -10240

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Why is it important to keep two sides of an equation balanced when solving?

Lady_Fox [76]

Answer:

An important property of equations is one that states that you can add the same quantity to both sides of an equation and still maintain an equivalent equation. If you think of an equation as being like a balance scale, the quantities on each side of the equation are equal, or balanced.

Step-by-step explanation:

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2 years ago

Find the value of x for which ABCD must be a parallelogram.

Inessa [10]

Hey there!

You can tell that the two angles are congruent because of the arc. So make the two angles each other.
3x-17=25-3x. Add 3x to each side. You get 6x-17=25. Add 17 to each side to get 6x=42. Divide each side by 6. You get x=7. So the value of x would be 7.

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3 0

2 years ago

Express your answer in the smaller unit: 231 m 31 cm - 14 m 48 cm

pashok25 [27]

23131-1448 =21683(cm)

6 0

2 years ago

On the coordinate plane shown, each grid unit represents 10 feet. Polygon QRST has vertices Q(20, 30), R(−10, 30), S(−10, −20),

beks73 [17]

The coordinate plane is missing, so i have attached it.

Answer:

Perimeter of room = 140 ft

Area of room = 1200 sq.ft

Step-by-step explanation:

From the cordinate plane attached, we can see the polygon QRST which represents the floor plan of the roo.

Thus;

The length of the sides of the room are;

ST = RQ = 30

QT = RS = 40

Perimeter of a rectangle is the sum of all sides of the rectangle.

Thus, perimeter of the room = (30 × 2) + (40 × 2) = 140 ft

Now, area of a rectangle is the product of two perpendicular sides.

Thus area of room = 40 x 30 = 1200 sq.ft

4 0

3 years ago

F (x) =2x -4; find f (-4)

NemiM [27]

Answer:

f(-4) = -12

Step-by-step explanation:

$f(x)=2x-4$

To calculate f(-4), we need to substitute x in our equation above with -4:

$f(x)=2x-4\\f(-4) = 2*(-4) - 4\\f(-4) = -8-4 = -12$

Note that 2*(-4) = -8

Answer: f(-4) = -12

6 0

3 years ago