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3 years ago

10

20 points answer if you know the answer!!!

2 answers:

ivolga24 [154]3 years ago

8 0

Pretty sure its D. you need to divide 60.5 by 69

Sergio [31]3 years ago

4 0

I believe that answer a is the correct answer.

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The right rectangular prism is packed with unit cubes of the appropriate unit fraction edge length find the volume of the right

evablogger [386]

Answer:

try base time height as that is the way to find the volume and then whatever measurements it is so if it is meters then divide from 100 etc..

Step-by-step explanation:

5 0

3 years ago

Find an m > 0 such that the the equation x^4−(3m+2)x^2+m^2=0 has four real solutions that form an arithmetic sequence.

Aleonysh [2.5K]

Answer:

The value of m is 6.

Step-by-step explanation:

Here, the given equation,

$x^4-(3m+2)x^2+m^2=0$

$x^4+0x^3-(3m+2)x^2+0x+m^2=0$

Let the roots of the equation are a-3b, a-b, a+b and a + 3b, ( they must be form an AP )

Thus, we can write,

$a-3b+a-b+a+b+a+3b=\frac{\text{coefficient of }x^3}{\text{coefficient of }x^4}$

$=\frac{0}{1}=0$

$\implies a=0----(1)$

$(-3b)(-b)+(-b)(b)+(b)(3b)+(3b)(-3b)+(-b)(3b)+(-3b)(b)=\frac{\text{coefficient of }x^2}{\text{coefficient of }x^4}}$

$=\frac{-3m-2}{1}$

$3b^2-b^2+3b^2-9b^2-3b^2-3b^2=-3m-2$

$-10b^2=-3m-2$

$\implies b^2=\frac{3m+2}{10}-----(2)$

$(-3b)(-b)(b)(3b)=\frac{\text{Constant term}}{\text{coefficient of}x^4}= m^2$

$9b^4=m^2$

$9(\frac{3m+2}{10})^2=m^2$

$9(\frac{9m^2+4+12m}{100})=m^2$

$81m^2+36+108m=100m^2$

$-19m^2+108m+36=0$

$19m^2-108m-36=0$

$19m^2-114m+6m-36=0$

$19m(m-6)+6(m-6)=0$

$(19m+6)(m-6)=0$

$\implies m=-\frac{6}{19}\text{ or }m=6$

But m > 0,

Hence, the value of m is 6.

4 0

3 years ago

A girl gave her cousin $2.15 in nicels and dimes . Altogether, she gave her cousin 28 coins . How many of them were dimes? How m

mart [117]

Answer: 15 dimes and 13 nickels

Step-by-step explanation:

7 0

3 years ago

What is the percent of decrease of 90 to 72

vodomira [7]

You lose 20%.

if it were going up to 72 to 90 it would be a 25% increase

4 0

3 years ago

Read 2 more answers

Deanna was solving the following equation, 5(x + 2) - 4 = 16.

zaharov [31]

Answer:

Add 4 to each side

Step-by-step explanation:

7 0

3 years ago