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Sauron [17]
3 years ago
10

-10ab+2ab^2-9ab+7 what is the simplest form

Mathematics
1 answer:
vesna_86 [32]3 years ago
3 0

Answer:

-19ab + 2ab^2 +7

Step-by-step explanation:

all you do is combine the like terms. and the omly like terms are -10ab and -9ab. 2ab^2 is not one of the like terms simply because of that ^2.

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a rectangular garden is 52m long and 34m broad a path 2m wide is running inside the garden calculate the cost of travelling the
erastova [34]

Answer:

Answer From Gauth Math

Step-by-step explanation:

6 0
3 years ago
Which of the following describes a positive correlation?
insens350 [35]

Answer:

First Choice: As the number of hours spent on homework increases, the tests scores increase.

Step-by-step explanation:

The definition of a positive correlation  is a relationship between two given variables, in which both variables are moving in the same direction. This can mean when one variable increases and the other variable increases, too, or one variable decreases and the other decreases as well.

The first choice is a positive correlation because both variables are changing (increasing) in the same direction. As you spend more time on homework, you're likely to get a higher test score.

The second choice cannot be a positive correlation because only one variable is having some kind of change (increasing). The doctor visits amount remains the same, so we can call this a zero-correlation relationship because the number of apples eaten yearly doesn't affect the amount of doctor visits. An apple a day keeps the doctor a way is just a proverb, not to be taken literally.

The third choice cannot be a positive correlation because the two variables are going different directions. Even though the number of times going to bed early is increasing, the number of times waking up late decreases, which is not moving in the same direction as the other variable.

The fourth choice cannot be a positive correlation because, similarly to the third choice, the two variables are going different directions. One variable is increasing, which is the amount of practice time. Meanwhile, the other variable is decreasing (going in the opposite direction), which is the number of games lost in a season.

6 0
3 years ago
a spherical container with a radius of 4 ft is filled with gas that costs$12 per cubic foot what is the total value of the gas i
Mashcka [7]

The spherical container has a radius of 4ft (where ft represents feet)

Its filled with gas that costs $12 per ft³

The value of gas in the container = ?

The volume of a sphere = 4/3\pir³

The volume of the container = 4/3 × \pi × 4³ ft³

One cubic foot = $12

4/3 × \pi × 64 = How much?

Cross multiplying gives:

4/3 × \pi ×64 × $12 = $3216.99 (Rounded up to nearest one cent)

7 0
2 years ago
This morning, Raina's car had 18.18 gallons of fuel. Now, 5.7 gallons are left. How much fuel did Raina use?
guapka [62]

Answer:

12.48 gallons

Step-by-step explanation:

Subtract the starting amount from the ending amount

18.18 - 5.7

and get 12.48

3 0
3 years ago
Read 2 more answers
To find out how fast a tree grows, you can measure its trunk. A giant red oak's diameter was 248 inches in 1965. The tree's diam
professor190 [17]
Any times you see the phrase: "Rate of Change", or even sometimes just the word "Rate" think slope. 

The word slope is just a fancy word that means the rate of change. 

Rate of Change is just a fancy phrase meaning how much does something change over some amount of time. 
So in this case our rate of change will have the units of inches per year. 

Let's get to the problem at hand! 
We'll need to find slope / the rate of change (the two are interchangeable with each other).
Let's go over the formula for slope:

m = (y2 - y1) / (x2 - x1) 

First we will need to label each of the "coordinated points (the two numbers that go together in a pair)" with either (x1,y1) or (x2,y2). 

A Giant Red Oak's diameter in 1965 was 248 inches. Keep in mind time is ALWAYS going to be X in rate of change problems (and most all problems for that matter).  

(1965,248) 
(X1,Y2)

(2005,251)
(X2,Y2)

Plug in the values into the equation!
m = (y2 - y1) / (x2 - x1)
m = (251 - 248) / (2005 - 1965) 
m = (3) / (40)

Type that into a calculator to get a decimal value over 1.
m = 0.075 inches per 1 year. 
Or... 

m = 0.075in / 1 year
8 0
3 years ago
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