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4 years ago

What are the solutions of 12 – x2 = 0?

2 answers:

4 0

$- {x}^{2} + 12 = 0 \\ - x {}^{2} + 12 - 12 = 0 - 12 \\ - {x}^{2} = - 12 \\ {x}^{2} = 12 \\ x = + \sqrt{12 \:} and - \sqrt{12}$

Kazeer [188]4 years ago

4 0

Answer:

x = 2√3 and -2√3

Step-by-step explanation:

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Can someone help me with this problem

Alex_Xolod [135]

Answer:

Step-by-step explanation:

The formula of a distance between two points:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

A(-3, 0) , B(3, 2)

$AB=\sqrt{(3-(-3))^2+(2-0)^2}=\sqrt{6^2+2^2}=\sqrt{36+4}=\sqrt{40}=\sqrt{4\cdot10}=\sqrt4\cdot\sqrt{10}=2\sqrt{10}$

A(-3, 0), D(-2, -3)

$AD=\sqrt{(-2-(-3))^2+(-3-0)^2}=\sqrt{1^2+(-3)^2}=\sqrt{1+9}=\sqrt{10}$

AB = CD and AD = BC

The area of a rectangle:

$A=(AB)(AD)$

Substitute:

$A=(2\sqrt{10})(\sqrt{10})=(2)(10)=20$

The perimeter of a rectangle:

$P=2(AB+AD)$

Substitute:

$P=2(2\sqrt{10}+\sqrt{10})=2(3\sqrt{10})=6\sqrt{10}$

4 0

3 years ago

Square root of (93636)

Solnce55 [7]

Answer:

306

Step-by-step explanation:

mark brainliest :)

6 0

3 years ago

Which statements are true about the place values in the number 99.999?

dalvyx [7]

A and B are correct... reason is because hundredths is 1/10 to tenths and tenths are 10 times bigger than hundredths. C and D are wrong.

Hope this helped!

Nate

4 0

3 years ago

Draw an array for a known 10 facts then subtract 1 from each row to find the product

Ugo [173]

So you would draw an array and then subtract 1 from each side!
hope that helped

6 0

3 years ago

The sum of two numbers is 97. The larger number is three less than four times the smaller number. Find the numbers

Paladinen [302]

Answer:

Hi there!

Your answer is:

Small number = 20

Larger number = 77

Step-by-step explanation:

larger= 4s-3

smaller = s

s+ 4s-3 = 97

5s-3 = 97

5s = 100

s= 20

large number = 4(20)-3

80-3

larger = 77

Double check work!

20+77= 97✓

Hope this helps!

3 0

3 years ago