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3 years ago

What expression is equivalent to

Mathematics

1 answer:

Anna [14]3 years ago

8 0

Answer:

25 $z^{4}$ + 9z² + 4

Step-by-step explanation:

Using the rule of exponents

$a^mb^n)^{p}$ = $a^{mp}$ $b^{np}$

Given

$(5z^2+3z+2)^{2}$

= 5² $z^{2(2)}$ + 3²z² + 2²

= 25 $z^{4}$ + 9z² + 4

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A hard cover books cells for $16.50 the same title in paperback sells for $4.95 how many hard cover books must a dealer sell to

alex41 [277]

Answer:

Hope this helps

Step-by-step explanation:

$4.95 times 30 equals $148.50 so $16.50 times 9 eqauls $148.50

8 1

3 years ago

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Write a exspession for 8 divided by d

BlackZzzverrR [31]

Answer:

8/D

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2 years ago

Any time Speedy the Sloth is not sleeping, she drinks chamomile tea at a steady rate of 2/7 of a cup per hour. Yesterday, she dr

Nitella [24]

Answer:

She stayed awake for 295 minutes today

Explanation:

We are given that:

Yesterday, she drank one cup

Today, she drank $\frac{17}{42}$ of a cup more than yesterday

This means that:

Number of cups she drank today = $1+\frac{17}{42}=1\frac{17}{42}cups$

Now, we know that she drinks $\frac{2}{7}$ of a cup per hour any time she is not sleeping

We use cross multiplication to get the time she took to drink $1\frac{17}{42}$ cups

1 hour ...........................> $\frac{2}{7}$ of a cup

?? hours ......................> $1\frac{17}{42}$ cups

Time taken = $\frac{1\frac{17}{42}*1 }{\frac{2}{7} } = \frac{59}{12} = 4\frac{11}{12} hours$

This means that she was awake for $4\frac{11}{12}$ hours

Finally, we convert this to minutes:

Knowing that 1 hour has 60 minutes, therefore:

She stayed awake for $4\frac{11}{12} * 60 = 295$ minutes

Hope this helps :)

8 0

3 years ago

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Given f(x) = 3/4 x + 12, find the value of x when f(x) = x.

12345 [234]

Answer:

The rigth answer is, x = 1

Step-by-step explanation:

As:

f (x) = 3/4 x + 12

They separate the terms:

3/4 x = 12

Then, what you are multiplying happens to divide:

x = 12/1/3/4

Media are divided by means and ends with ends, and we have as a result that:

x = 3/3 = 1

5 0

3 years ago

What is W(x) = 3/5x + 2

son4ous [18]

Answer:

W(x)=3/5x+2

W(1)=3/5(1)+2

w(1)=13/5

꧁꧂

W(2)= 3/5×(2)+2

W(2)=3/10+2

W(2)=23/10

꧁꧂

W(3)=3/5×(3)+2

W(3)= 7

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3 years ago