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2 years ago

PLZ HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:(

Mathematics

1 answer:

-Dominant- [34]2 years ago

8 0

Sorry for taking so long, it wont let me type a while ago. I have it all fix now hehe. I took a picture of my work, ask me if you still don’t understand.

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Hello I'm Chloe Can you help me, Thank you :)

andrew-mc [135]

Answer:

b is correct

Step-by-step explanation:

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2 years ago

100 POINTS PLZ HELPPP Drag each tile to the correct box. Arrange the expressions in increasing order of their estimated values.

andrew11 [14]

Answer:

Explanation:

1.) Rewrite √24 = $\sqrt{4*6} = 2\sqrt{6}$ Rewrite √54 = $\sqrt{9*6}= 3\sqrt{6}$

Divide both terms by the denominator; √6 cancels. 2-3 = -1

2.) Rewrite as $\frac{3}{2\sqrt{5}}$ × $\frac{10\sqrt{2}}{3\sqrt{5}}$ The 3's cancel. 10/2 = 5√2 in the numerator.

√5 × √5 = 5 in the denominator. The 5's cancel.

That leaves √2 ≈1.4142

3.) Divide the terms in the numerator by the term in the denominator.

√2's cancel. 10π/2 = 5π 8π/2 = 4π

Subtract and we are left with π = 3.14159

4.) $\pi\sqrt{\frac{5}{3}}\cdot\pi\sqrt{\frac{3}{5}}$ The square roots are reciprocals. They multiply to 1

We are left with π × π = π² ≈ 9.8696

8 0

2 years ago

Read 2 more answers

PLEASE HELP!!! NEED ANSWERS TO THESE QUESTIONS..

yaroslaw [1]

Answer:

12. Option A is correct

13. Option A is correct

14. Option C is correct

15. Option D is correct

16. Option A is correct

Step-by-step explanation:

12) Lowest Common Denominator of

$\frac{p+3}{p^2+7p+10} \,\, and \,\, \frac{p+5}{p^2+5p+6}$

We should find the factors of denominators and then find the LCM of the denominators.Finding LCD is same as finding LCM.

Factors of p^2+7p+10 = p^2 +2p +5p+10 = p(p+2)+5(p+2) = (p+5)(p+2)

Factors of p^2+5p+6 = p^2+2p+3p+6 = p(p+2)+3(p+2) = (p+3) (p+2)

Now, rewriting the above equation with factors and finding the LCM

$\frac{p+3}{(p+5)(p+2)} \,\, and \,\, \frac{p+5}{(p+3)(p+2)}\\$

LCM of (p+5)(p+2) and (p+3)(p+2) = (p+5)(p+3)(p+2)

The LCD is (p+5)(p+3)(p+2).

So, Option A is correct.

13. Divide

$\frac{40x}{64y} \,\,by\,\, \frac{5x}{8y}$

by stands for division. The equation can be written as:

$\frac{40x}{64y}\div\frac{5x}{8y}$

Division sign changed into multiplication, we take reciprocal of second term i.e,

$\frac{40x}{64y}*\frac{8y}{5x}\\\\Solving\\\frac{40x*8y}{64y*5x}\\\\\frac{320xy}{320xy} \\\\1$

So, Option A is correct.

14. Simplify:

$\frac{x+2}{x^2-6x-16} \div \frac{1}{9x} \\$

Factors of x^2-6x-16= x^2 -8x +2x -16 = x(x-8)+2(x-8) = (x-8)(x+2)

Putting factors in the above equation and changing division sign with multiplication we get,

$\frac{x+2}{(x-8)(x+2)} * \frac{9x}{1}\\\frac{9x}{x-8}$

So, Option C is correct.

15. Simplify

$\frac{4}{\frac{1}{4}-\frac{5}{2}}$

Solving denominator,

Taking LCM of 4 and 2 and subtracting we get

$\frac{4}{\frac{1-(5*2)}{4}}\\\frac{4}{\frac{1-10}{4}}\\\frac{4}{\frac{-9}{4}}\\\frac{4*4}{-9}\\\frac{16}{-9} \,\,or\,\,\\\frac{-16}{9}$

Option D is correct.

16. Simplify:

$\frac{7x+42}{x^2+13x+42}$

Making factors of x^2+13x+42= x^2 +6x+7x+42 = x(x+6)+7(x+6) = (x+7)(x+6)

Taking 7 common from numerator and putting factors in denominator we get,

$\frac{7(x+6)}{(x+7)(x+6)}\\\\Cancelling\,\, x+6 \,\, from\,\, numerator \,\, and\,\, \\\\\frac{7}{(x+7)}$

Option A is correct.

8 0

2 years ago

Cassie has a small cube shaped box. Its volume is 64 cubic cm. What is the area of one face of tje box.

Andrews [41]

Answer: One face is 16 square centimeters.

Step-by-step explanation: To find the area of a face, you need to know the length of the side. All the sides of the cube are the same, so take the cube root of 64.

$\sqrt[3]{64}=4$ cm is the length of the side

The area of one face is the side length squared 4² = 16

4cm × 4cm = 16 square centimeters.

8 0

2 years ago

How much interest must you deposit in an account to earn $400 per year at 2% simple interest?

LuckyWell [14K]

time is measured in seconds

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1 year ago