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3 years ago

Which of the following could not be points on the unit circle?

Mathematics

2 answers:

enyata [817]3 years ago

5 0

Answer:

C and D

Step-by-step explanation:

NemiM [27]3 years ago

4 0

A. √(0.8^2) + (0.6^2) = √1 = 1 => OK

b.(-2/3,√ 5/3) = √(-2/3)^2 + 5/9) = √(4/9 +5/9) = √1 = 1 => OK

c.(√ 3/2, 1/3) = √(3/4 + 1/9) < 1 => it is inside the unit circle

d.(1,1) = √(1 + 1) = √2 > 1 => NO. This point is beyond the limits of the unit circle.

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the perimeter of a triangle is 49cm.One side is 7cm longer than another side and 5cm shorter than the third side find sides

pogonyaev

P = a + b + c = 49 cm

a = b + 7 => b = a - 7

a = c - 5 => c = a + 5

_____________________

a + (a - 7) + (a + 5) = 49

3a = 49 + 7 - 5

3a = 51

a = 17 cm

b = 17 - 7 = 10 cm

c = 17 + 5 = 22 cm

8 0

2 years ago

Dorian is spreading mulch on his triangular flowerbed. If the base is 8 feet and the height is 6 feet. How many square feet of m

katovenus [111]

Answer:

24 square feet

Step-by-step explanation:

Given:

Dorian is spreading mulch on his triangular flowerbed.

The base is 8 feet.

The height is 6 feet.

Question asked:

How many square feet of mulch will he need for the flowerbed?

Solution:

The base of triangular flowerbed = 8 feet.

The height of triangular flowerbed = 6 feet.

now, to find how many square feet of mulch he will need for the flowerbed, we will find area of the triangular flowerbed:-

As we know:

$Area\ of\ triangle=\frac{1}{2} \times base\times height$

$=\frac{1}{2} \times8\times6\\\\ =\frac{48}{2} \\ \\ =24\ square\ feet$

Thus, 24 square feet of mulch he will need for the flowerbed.

8 0

3 years ago

Find the positive solution of x when: 25 = 4/x²

sladkih [1.3K]

1) Multiply both sides by x²

$25 {x}^{2} \: = \: 4$

2) Divide both sides by 25

${x}^{2} \: = \: \frac{4}{25}$

3) Square root both sides

$x \: = \: \frac{2}{5}$

Viola!

7 0

2 years ago

Scott is saving coins in a jar. Last week, the jar was 1/4 full. This week, he added more coins, and the jar is now 1/2 full. Ho

Leona [35]

Answer:

Scott filled (1/2 - 1/4) of the jar, or 1/4 of the jar this week.

Let me know if this helps!

4 0

3 years ago

Read 2 more answers

3y-2x=-9 slope intercept form

ad-work [718]

Answer:

y = 2/3x − 3

Step-by-step explanation:

Pls, choose me as brainliest!

4 0

2 years ago