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WINSTONCH [101]

3 years ago

11

solve the following equation by transforming it into a perfect square trinomial. 3x^2 +18x=21. DESPERATE HELP!!! A.(-7,1) B.(-19

,13) C.(-25,7) D.(-13,-5). Will Mark Branliest!!

2 answers:

In-s [12.5K]3 years ago

8 0

Correct answer choice is
<span>A.(-7,1)</span>

madam [21]3 years ago

8 0

The correct answer for this problem is A.

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Each of the 8 cats in a pet store was weighed. Here are their weights (in pounds):

kow [346]

Step-by-step explanation: The mean of a data set is equal to the sum of the set of numbers divided by how many numbers are in the set.

To find the mean of the data set shown here, let's begin by adding the numbers.

11 + 10 + 12 + 14 + 5 + 15 + 7 + 6 = 80

80 will now be divided by how many numbers are in the set which is 8.

80 ÷ 8 = 10

This means that the mean of the data set is 10.

___________________________________________________

Now, let's find the median of the data set. The median is the middle number in the data set when the data set is written from least to greatest.

Least to greatest ⇒ 5, 6, 7, 10, 11, 12, 14, 15

Since there are two numbers in the middle of the data set, we need to add the two numbers that are in the middle and divide the sum of the numbers by 2 since there are two numbers.

The two numbers in the middle are 10 and 11.

10 + 11 = 21

21 ÷ 2 = 11.5

Therefore, 11.5 the median of the data set.

5 0

3 years ago

Which statements are true about 5/6 and 7/10 check all that apply

Travka [436]

Answer:

<em>(1) 40 is a common multiple of 6 and 10 </em>

False:

Multiples of 6: 6, 12, 18, 24, 30, 36, 42...

Multiples of 10: 10, 20, 30, 40...

<em>(2) The fraction 5/6 is greater than 7/10</em>

True:

Find common denominators. Note that what you multiply to the denominator, you multiply to the numerator.

(5/6) x (5/5) = 25/30

(7/10) x (3/3) = 21/30

25/30 > 21/30 ∴ 5/6 is greater than 7/10

<em>(3) The fraction 42/60 is an equivalent form of 7/10</em>

True:

Find a common denominator. Note that what you multiply to the denominator, you multiply to the numerator.

(7/10) x (6/6) = 42/10

42/10 = 42/10 ∴ 7/10 = 42/10

<em>(4) The only value that can be used as a common denominator is 60</em>.

False:

While 60 is a plausible denominator, there are other denominators that can be used. Remember that what you do to the denominator, you do to the numerator.

<em>(5) Ten is a multiple of 6. </em>

False:

Multiples of 6: 6, 12, 18, 24, 30...

~

7 0

3 years ago

I need someone to answer this ASAP

Feliz [49]

Answer:

The widths and depths are the same. Since volume is length x width x height, you get 2x2x4=16, 3x3x6=54, 4x4x8=128, 5x5x10=250

8 0

3 years ago

Simplify<br>1)5x+3=x+13<br>2)5/2x-1/X =1/6

Artyom0805 [142]

Step-by-step explanation (Question 1):

<u>Step 1: (Question 1): Subtract x from both sides.</u>

5x+3=x+13

5x+3−x=x+13−x

4x+3=13

<u>Step 2: (Question 1): Subtract 3 from both sides.</u>

4x+3−3=13−3

4x=10

<u>Step 3: (Question 1): Divide both sides by 4.</u>

4x/4 = 10/4

FIRST ANSWER: x = 5/2

Step-by-step explanation (Question 2):

<u>Step 1: (Question 2): Multiply by LCM</u>

15x^2 - 6 = x

<u>Step 2: (Question 2): Solve 15x^2</u>

15x^2 - 6 = x:

x = 2/3

x = -3/5

<u>Step 3: (Question 2): Solve</u>

ANSWER: x=0.666667 or x=−0.6

See Attachment 1 for question 1 steps (FULL)

See Attachment 2 for question 2 steps (FULL)

Answer:

1) x = 5/2

2) x=0.666667 or x=−0.6

Hope this helps.

8 0

3 years ago

Read 2 more answers

HI CAN I PLEASE GET SOME HELP PLEASE THANK YOU I WOULD APPRECIATE IT HOW MANY SOLUTIONS ARE THERE TO THIS NONLINEAR SYSTEM!!!! A

viktelen [127]

Answer:

B) one solution

Step-by-step explanation:

The blue line and the red line cross at only one point so there is one solution. It would be no solution if the blue line never crossed the red line and it would be two or possibly more solutions if the lines crossed more than once.

4 0

3 years ago