simplify the following expression. (9x^2-2x+7)+(4x^2+7x+2)

Answer:

proportional relationship does not exist.

proportional relationship does exist.

proportional relationship does not exist.

proportional relationship does exist.

Step-by-step explanation:

To establish proportionality :

For data 1:

y α x

y = kx ; k = proportionality constant

Take x = 1 ; y = 5

5 = k

k = 5

Hence, to obtain other data points :

y = 5x (if data is proportional ; if otherwise, the data isn't proportional).

Take ; x = 2

y = 5* 2 = 10

10 ≠ 9

Hence, data isn't proportional.

2.)

Data 2:

y α x

y = kx ; k = proportionality constant

Take x = hours 2 ; y = miles = 110

110 = 2k

k = 110/2

k = 55

Take ; x = 5

y = 55*5 = 275

275 = 275 (proportional relationship exist)

3.)

For the graph:

First graph isn't proportional

4 = 2k ; k = 4/2 = 2 ; k = 2

At x = 6

y = 6*2 = 12

From graph ; y = 8 at x = 6

Hence, proportional relationship does not exist.

4.)

For the 2nd graph:

4 = 2k ; k = 4/2 = 2 ; k = 2

At x = 6

y = 6*2 = 12

From graph ; y = 12 at x = 6

Hence, proportional relationship does exist.

Answer:

Follows are the solution to the given question:

Step-by-step explanation:

There are missing details, which is why its solution is as follows:

When an angle bisector points so, its two sides of the corner are equidistant. Its corner bisector of a triangle angle is a straight line splitting its angle into two congruent directions. In such a single point, calling its incentives, follow three-angle engineers are required of its three triangle angles.

Answer:

According to Euclidean geometry, a plane contains at least THREE points that do not lie on the same line.

:-))

Answer:

find the angle of the borg

Step-by-step explanation:

Answer:

cant see all of the question LOL

Step-by-step explanation:

Answer:

I believe the answer is 21

Step-by-step explanation:

3•4+6/2•3

12+3•3

12+9=21

25 x 60 = 1,500 chickens

Answer:2400

Step-by-step explanation:

Find 35% of 65, since A= 35 and B= 65.  

35%=.35  

Multiply that by 65, for the percentage.

65*.35= 22.75

So, 35% of 65= 22.75

22.75 is not equal to 35.

This statement is false.

Answer:

1,680

Step-by-step explanation:

We know a hummingbird beats its wings 420 times in 30 seconds. To find the unit rate, divide 420 by 30.

420/30

42/3

14 beats/second

Now we know a hummingbird beats its wings 14 times in 1 second. Two minutes equals 120 seconds. Multiply 14 by 120 to get the answer here.

14 * 120

(14 * 12) * 10

168 * 10

1,680 beats

Answer:

1680

Step-by-step explanation:

From the table, we can see that per each 30 seconds, a mocking bird flaps its wings 420 times.

Each minute contains 60 seconds. Therefore, in order to calculate the number of times a mockingbird flaps its wings in 2 minutes, we can

60 seconds x 2 minutes = 120

Then, we can divide this number by 30 to figure out how many times we need to multiply 420 to get our answer.

120/30 = 4

Therefore,

420 x 4 = 1680

Answer:

3 paperback books

Step-by-step explanation:

Let the number of paperback Kate bought be a and the number of hard books be b.

Given that she bought 5 books then

a + b = 5

Also, If Kate paid 7d dollars then

a * d + b * 2d = 7d

Divide through by d

a + 2b = 7

Hence we have 2 equations

a + b = 5

a + 2b = 7

subtract the first from the second

2b - b = 7 - 5

b = 2

since

a + b = 5

a + 2 = 5

a = 5 - 2

= 3

Recall that the number of paperback she bought is a hence this is 3

Answer: The answer is 70

Step-by-step explanation:

Answer:

Step-by-step explanation:

KL=1/2 YX=1/2×56=28

YZ=2JK=2×38=76

LZ=1/2YZ=1/2×76=38

Answer:

-x. is the answer maksjjsjsjsbbshs

Answer:

3

Step-by-step explanation:

In this expression, the first term is 2x, then 4y, then 8-2 (which simplifies to 6).

Answer:

7 hours

Step-by-step explanation:

yw :)

Answer:

72.7273%

Step-by-step explanation:

Just divide 1.9/1.1 and get 1.7273 which is equal to around 72%

Answer:

$18.97

Step-by-step explanation:

Add $7.49, $8.29, and $1.79 together= $17.57.

Then, add the 8% tax. So $17.57+8% of tax= $18.97.

Answer:

$460

Step-by-step explanation:

Because if you put 23% over 100 and multiply it by 20,000 you should get that

Answer:

the 1st one. the unit rate is $21.00

Answer is "c" cause it is

Answer:

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Answer:

1st one

Step-by-step explanation:

if you try out 710 divided by 7 times 3 it doesn't equal 390 dollars, so you're not getting a fair price and you're paying extra, whereas you know on the first one that if you double 360 by 2 it equals 720 so it is a linear pricing

Answer:

[tex]k=\dfrac{l(h-1)}{2h}[/tex]

Step-by-step explanation:

The given equation is :

[tex]h=\dfrac{l}{l-2k}[/tex] ....(1)

We need to find the value of k.

Cross multiplying equation (1)

[tex]h(l-2k)=l\\\\hl-2hk=l\\\\hl-l=2hk\\\\k=\dfrac{l(h-1)}{2h}[/tex]

So, the value of k is equal to [tex]\dfrac{l(h-1)}{2h}[/tex].

Answer:

3780quarts, making 105 quarts per day

Step-by-step explanation:

36 is 2x18, so 210x18 equals 3780. divide 210 by 2 to get 105

Answer:

Step-by-step explanation:

6

Answer:

98 degrees

Step-by-step explanation:

Since angle LON is a straight angle, that means its measure is 180 degrees. So, the two angles that make up angle LON add up to 180. You can create the following equation:

(3x + 89) + (8x + 58) = 180

Then, add like terms.

3x + 8x = 11x

89 + 58 = 147

11x + 147 = 180

Subtract 147 from both sides.

11x = 180 - 147

Add like terms.

11x = 33

Now, divide by 11 on both sides.

x = 3

Since we now have the value of x, we can plug it into the equation to find angle MON:

MON = 3x + 89

Substitute 3 for x

MON = 3(3) + 89

MON = 9 + 89

MON = 98

Answer:

UNLIKELY

Step-by-step explanation:

Given that:

Probability of rolling a six with a six sided nuner cube = 1/6

Required outcome / Total possible outcomes

Number of 6 / total sides of number cube = 1/6

The probability value obtained shows that there is a chance of getting a six ; however it is possible at about once in every 6 rolls of the dice.

Hence getting a six isn't impossible but the chance is small. A probability of 1/6 is the smallest that can be obtained for any of each number on the dice. Hence, it could be said that the likelihood is 'UNLIKELY'

Answer:

The answer is B

Step-by-step explanation:

Answer:

an algebraic expression that has a term with a coefficient of 9 is

9(x +14)

9x + 126

Answer:

If there are an even number (0, 2, 4, ...) of negative factors to multiply, the product is positive. If there are an odd number (1, 3, 5, ...) of negative factors, the product is negative.

Step-by-step explanation:

Answer:

bhfxhxffkgflcvcjgcigcicyouocuofofuogpuphi the questions I will send