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4 years ago

What values of x make the (x-2)(x+7) expression negative

Mathematics

1 answer:

Sergio039 [100]4 years ago

5 0

Answer:

One number that works is 1.

Step-by-step explanation:

(1-2)(1+7)

-1(1+7)

-1*8

-8

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Zach is trying to decide which of three golf

nadya68 [22]

Answer:

No, the population of people is poorly represented with this low sample size. 150 would better represent the population as a whole. 42 people would want to play on Rolling Meadows. (according to the previous data)

Step-by-step explanation:

Most likely this small sample size is too small to gain sufficient data from the whole population. If he were to survey a larger sample of people, he would overall better represent the population as a whole. The percentage of people who would prefer Rolling Meadows in the first sample was 28% (7/25). So just multiply 150 times .28 and get 42. 42 people would want to play on Rolling Meadows.

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3 years ago

Please help me with this question

Zinaida [17]

Tree C is the proper tree. The first game has the possibility of a win, a loss, or a tie which the first row represents. The second game could also win, lose or tie, meaning each result would have each possibilty for that game.

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3 years ago

Help I need this now.

nadezda [96]

Answer:

I think Rose isn't correct.

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3 years ago

Read 2 more answers

going down the river a boat went 13 km/h. going up the river it only 1 km/h. Find the speed of the boat in still water and the s

iris [78.8K]

This question looks really tricky, but it's actually just describing a system of equations. We have the equation for the speed of the boat with the current and the speed of the boat against the current. Call the boat speed b and the current speed c:
$b+c=13$
$b-c=1$

Then
$(b+c)+(b-c)=13+1$
$2b=14$
$b=7$

So the boat's speed is 7 km/h. Find the current's speed by plugging the boat speed back into one of the original equations:
$7+c=13$
$c=6$

The current's speed is 6 km/h.

4 0

3 years ago

2 x + y equals negative 9

Vilka [71]

Answer:

The given equation which is in two variable is

⇒2 x + y =9

As we know that to get a unique solution you need two intersecting lines.

But here only one line is given.

On a single line there lie infinite number of points.

So, for different values of x we get different values of y or different values of y we get different values of x.

So , we can write the above equation as

either ⇒y=9-2 x Or x=9-2 y

I have drawn graph for you.

Thus , there are infinite number of solution of this equation. Like (0,9),(1,7),(2,5),(-2,13),(-1,11),(-3,15)......

6 0

3 years ago