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3 years ago

Are the following equivalent -3x=-x-2x

Mathematics

2 answers:

Delvig [45]3 years ago

8 0

Answer:

Yes They are Equivalent.

Step-by-step explanation:

R.H.S (Right Hand Side)

- x - 2x

=> 3x = L.H.S(Left Hand Side)

valina [46]3 years ago

4 0

Answer:

Yes.

Step-by-step explanation:

By adding like terms, -x - 2x = -3x. Therefore, they are equivalent.

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confirm or disprove ernest's work by selecting two different points and applying the slope formula. be sure to identify the poin

yan [13]

Answer:

Part a) Ernest's calculation was correct

Part b) Ernest's calculation was correct

Step-by-step explanation:

The picture of the question in the attached figure

The complete question is

Ernest calculated the slope of the graph during the uphill climb to be 10. His work is shown below.

Points: (60.900). (15, 450)

Slope : 900-450/60-15=450/45=10

Part a) Determine whether his calculation was correct or incorrect, and then explain why.

Part b) Confirm or disprove Ernest's work by selecting two different points and applying the slope formula. be sure to identify the points you chose

Part a)

we know that

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have the points

A(60,900),B(15,450)

Remember that

$m_A_B=m_B_A$

step 1

Find $m_A_B$

substitute in the formula

$m_A_B=\frac{450-900}{15-60}\\\\m_A_B=\frac{-450}{-45}=10$

step 2

Find $m_B_A$

substitute in the formula

$m_B_A=\frac{900-450}{60-15}\\\\m_B_A=\frac{450}{45}=10$

therefore

Ernest's calculation was correct, because $m_A_B=m_B_A$

Part b) selecting two different points

we take the points

(0,300) and (50,800) -----> see the attached figure

substitute in the formula of slope

$m=\frac{800-300}{50-0}$

$m=\frac{500}{50}$

$m=10$

therefore

Ernest's calculation was correct

8 0

3 years ago

Solve 3x^2 = −12x − 15.

vitfil [10]

3x^2+12x+15=0

Then divide by 3 to get the x by itself.
x^2+4x+5=0

Factor to (x+5) (x-1) and solve for the two values of x.

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babymother [125]

Answer: 3

Step-by-step explanation: just a regalar algebra equation but with a less than or equal sign

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Joelle is working on a school report in a word processor. She wants to place a figure which is 13.09 \text{ cm}13.09 cm13, point

GuDViN [60]

Subtract 13.09 from 21.59 giving you 8.5. Since the amount of space on both the left and right margin have to be equal you would divide by 2 to get 4.25 on the left margin as well as the right.

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EL QUE PUEDA AYUDARME SE LO AGRADECERIA MUCHO

Vladimir79 [104]

Answer:

La respuesta es 4

Step-by-step explanation:

La Ramon para esto es porque Como 3x4 son igual a 12 ebtonces por eso la respuesta es 4

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Are the following equivalent -3x=-x-2x ​

Are the following equivalent -3x=-x-2x