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3 years ago

7

A submarine was located 200 feet below sea level. If it ascends 55 feet and then drops 87 feet, then which integer represents th

e new position of the submarine? Answer choices: -342 ft, -255 ft, -232 ft, 232 ft. Please tell me how you got the answer!!

2 answers:

kirill [66]3 years ago

6 0

Answer:

-232

Step-by-step explanation:

Masteriza [31]3 years ago

6 0

-232 ft i’m pretty sure:)

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9,-7 with a translation of (x-8,y)

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What is the result when the number 35 is increased by 20%?<br> Show me your work!

nirvana33 [79]

Answer:

42

Step-by-step explanation:

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3 0

3 years ago

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

<u><em>The complete question is</em></u>

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

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3 years ago