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3 years ago

The product of 10 and the difference between 8 and -9?

Mathematics

1 answer:

ra1l [238]3 years ago

4 0

Hi there!

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I believe your answer is:

170

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Here’s why:

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$\text{The phrase can be rewritten as:}\\\\10 * (8-(-9))\\---------------\\\rightarrow 8-(-9) = 8 + 9 = 17\\\\\rightarrow 10 * 17\\\\\rightarrow \boxed{170}$

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Hope this helps you. I apologize if it’s incorrect.

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There are 20 light bulbs in 5 packages.Complete the table to find the rate that gives you the number of light bulbs in 3 package

blondinia [14]

Given that t<span>here are 20 light bulbs in 5 packages.

The table to find the rate that gives you the number of light bulbs in 3 packages is given as follows:

$\begin{tabular}
{|c|c|c|c|c|c|}
Light bulbs&4&8&12&16&20\\[1ex]
Packages&1&2&3&4&5
\end{tabular}$

Three different ways in which the rate can be written are:

12 light bulbs to 3 packages

12 light bulbs : 3 packages

12 light bulbs / 3 packages
</span>

7 0

3 years ago

What pattern is represented by the polynomial ?

Ymorist [56]

Answer:

choice C. Perfect square trinomial is correct.

Step-by-step explanation:

We need to find the pattern which is represented by the polynomial $4x^2+12x+9$ .

To find that pattern, we need to factor $4x^2+12x+9$

$4x^2+12x+9$

$=4x^2+6x+6x+9$

$=2x(2x+3)+3(2x+3)$

$=(2x+3)(2x+3)$

$=(2x+3)^2$

which is a perfect square.

Hence choice C. Perfect square trinomial is correct.

8 0

3 years ago

The function f is defined by the following rule.

Leno4ka [110]

X= -4; f(x)= -15
X= 2; f(x)= 3
X=5; f(x)= 12

6 0

2 years ago

What is 2,912 rounded to the nearest thousand

FrozenT [24]

Answer:

3,000

Step-by-step explanation:

Find the number in the thousand place 2 and look one place to the right for the rounding digit 9 . Round up if this number is greater than or equal to 5 and round down if it is less than 5 .

5 0

3 years ago

Read 2 more answers

What is the rate of change of the water level , in feet per hour

miskamm [114]

A; rate of change is the same as slope, so, using the slope formula, $m= \frac{y_{2} - y\1_{1} }{ x_{2} - x_{1} }$ , where $m$ is the slope and $x_{1}$ , $x_{2}$ , $y_{1}$ , and $y_{2}$ are the $x$ and $y$ values.

Plug in $2$ points for $x$ and $y$ , water level being the $y$ and time being the $x$ since we're looking for the answer in ft/hr-- you can choose any two, but from the same row.

$m= \frac{ 30-50}{4-0}$
$m= \frac{-20}{4}$
$m= \frac{-5}{1}$
$m= -5$ ft/hr

4 0

3 years ago