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Tanya [424]
3 years ago
14

An elevator descends into a mine shaft at the rate of 5 m/min. If the descend starts from 15m above the ground, by how long will

it take to reach 350 m deep from the ground?
Mathematics
2 answers:
frez [133]3 years ago
8 0

Answer:

Step-by-step explanation:

First we need to do 350 - 15 since 350 is our total and we already started at 15m.

Next divide the remainder (335) by 5 because that’s how fast we are moving, the final answer is 67 minutes.

Alekssandra [29.7K]3 years ago
3 0
67 minutes is your answer
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Law of sines: Sinca) = sin(B) = sin(C)
ioda

Answer:

no trangles can be formed

Step-by-step explanation:

We have been given angle A as 75 degrees and sides a = 2 and b = 3.

Using Sine rule, we can set up:

sin(a)                    sin(b)

------------      =       ------------

A                              B

Upon substituting the given values of angle A, and sides a and b, we get:

sin(75)                   sin(B)

------------      =      ------------

2                                3

Upon solving this equation for B, we get:

----->3sin(75)=2sin(B)

----->sin(B)=3sin(75)

                  -------------

                      2

------>sinB=1.4488

Since we know that value of Sine cannot be more than 1. Hence there are no values possible for B.

Hence, the triangle is not possible. Therefore, first choice is correct.

sorry I could not get to you sooner. please mark as brainliest

3 0
3 years ago
Simplify<br> -5(2x+4)-3(x-6)
Bond [772]

Answer:

x=6

Step-by-step explanation:

1 Add 44 to both sides.

2x=8+42x=8+4

2 Simplify  8+48+4  to  1212.

2x=122x=12

3 Divide both sides by 22.

x=\frac{12}{2}x=

​2

​

​12

​​

4 Simplify  \frac{12}{2}

​2

​

​12

​​   to  66.

x=6x=6

4 0
3 years ago
Read 2 more answers
Sarah works ar a shoe store. She earns a base salary of $1,500 per month, plus a 25% commission on the amount of shoe sales she
STatiana [176]

Answer:

Step-by-step explanation:

goal is 2,000 and she already makes 1,500

2,000-1,500 gives you the amount she needs to earn from shoe sales

she needs to earn 500 dollars with a 25% commision

25% can also be written as 25/100

for every $100 she makes, she gets $25 but she needs $500

100:25

we need the second number in the ratio to equal $500

500 divided by 25 is 20

20 x 100 : 25 x 20

2000: 500

ANOTHER WAY: 500 is 1/4 of 2000 and 1/4 is 25% so you could multiply the amount she needed by 4 to get your answer

3 0
2 years ago
What is the function? F(x)=2x^2-3x+1
olasank [31]

Answer:

To satisfy the hypotheses of the Mean Value Theorem a function must be continuous in the closed interval and differentiable in the open interval.

Step-by-step explanation:

As f(x)=2x3−3x+1 is a polynomial, it is continuous and has continuous derivatives of all orders for all real x, so it certainly satisfies the hypotheses of the theorem.

To find the value of c, calculate the derivative of f(x) and state the equality of the Mean Value Theorem:

dfdx=4x−3

f(b)−f(a)b−a=f'(c)

f(x)x=0=1

f(x)x=2=3

Hence:

3−12=4c−3

and c=1.

4 0
3 years ago
Read 2 more answers
Find the equation of a line through (0, 1) with slope m = 2.
Svetllana [295]
That would be : y = 2x + 1
4 0
3 years ago
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