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2 years ago

Simplify the equation 9xy^2-11xy^2

Mathematics

1 answer:

devlian [24]2 years ago

3 0

$9xy^2-11xy^2=(9-11)xy^2=-2xy^2$

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Priya drew a circle whose area is 25 cm. Dan drew a circle whose diameter is 4 times the radius of Priya's circle. How many time

Vitek1552 [10]

Answer:

400

Step-by-step explanation:

first work out the radius of priya's circle with the equation a = $\pi r^{2}$

$25 = \pi r^{2}$

$\frac{25}{\pi } = r^{2}$

$r = \sqrt{\frac{25}{\pi } }$

we know the diameter of a circle is 2 times the radius so the diameter of priya's circle is 2x $\sqrt{\frac{25}{\pi } }$

this means that if the diameter of dan's circle is 4 times bigger it must be

8x $\sqrt{\frac{25}{\pi } }$

to find the radius of dan's circle we divide the diameter by to 2 to give

4x $\sqrt{\frac{25}{\pi } }$

then use the a= $\pi r^{2}$ equation again

$a= (4 \sqrt{\frac{25}{\pi } })^{2} \pi$

which equals 400

hope that helped

6 0

2 years ago

Identify the corresponding word problem given the equation: x = 10 × 200 A) Frank and ten workers are hired to harvest tomatoes

Sliva [168]

I think it is c hope it helps.

5 0

3 years ago

Read the above and answer

svetlana [45]

Answer:

Linear Pair:

∠ 1 and ∠ 2

Vertical Angles:

∠ 1 and ∠ 3

Supplementary Angles:

∠ 7 and ∠ 6

Step-by-step explanation:

Linear Pair:

A linear pair of angles is formed when two lines intersect.

Two angles are said to be linear if they are adjacent angles formed by two intersecting lines.

The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees.

Example

∠ 1 and ∠ 2 ∠ 8 and ∠ 5 ,etc

Vertical Angles:

The angles opposite each other when two lines cross.

They are always equal.

Example

∠ 1 and ∠ 3 ∠ 8 and ∠ 6 ,etc

Supplementary Angles:

Two Angles are Supplementary when they add up to 180 degrees.

Examples two angles (140° and 40°)

All Linear pair are Supplementary angles

Example

∠ 7 and ∠ 6 ∠ 8 and ∠ 5 ,etc

3 0

2 years ago

Carley has 8 1/2 yards of fabric. She uses 2 1/2 to make pillows and 3 yards to make curtains. How much fabric is remaining

soldier1979 [14.2K]

3 yards of fabric will remain

3 0

2 years ago

How to get 14 using four fours

Len [333]

Answer:

Step-by-step explanation:

$4 \times (4 - .4) -. 4$

5 0

2 years ago