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HACTEHA [7]
3 years ago
9

A mechanic ground 6 valves in 25 minutes. At that rate,

Mathematics
1 answer:
pickupchik [31]3 years ago
5 0

Answer:

3hours and 12.5 minutes

Step-by-step explanation:

45/6=7.5x25=187.5/60=3hours and 12.5 minutes

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When asked to factor the trinomial 6x^2-18x+12, a student gives the answer (x-2)(x-1). What is one thing wrong with this answer?
Alex17521 [72]
The correct answer is B because 6 needs to be included.

5 0
3 years ago
Read 2 more answers
So sorry to ask another question but I need some help-
Vika [28.1K]

Answer:

14x + 23

Step-by-step explanation:

The lengths of three sides of a triangle are 5x + 9 feet, 2x + 14 feet, and 7x feet.

The perimeter of a triangle: the sum of all of its sides.

5x + 9 + 2x + 14 + 7x

14x + 23

It's the expression of the perimeter of the triangle. Once you will be asked to find x, you'll probably be given the exact perimeter of the triangle.

7 0
2 years ago
A bookstore marks up the price of a book by 25% of the cost from the publisher. Therefore, the
lesya692 [45]

Answer:

(A)

  • P(60) = 78.98
  • When the bookstore spends $60 on a textbook, the student pays $78.98

Step-by-step explanation:

Given:

P(x) = 1.053(x+0.25x)

P(60) = 1.053(60+0.25*60)

=1.053(60+15)

=1.053(75)

P(60)=$78.98

Since x is the cost from the publisher, when the bookstore spends $60 on a textbook, the student pays $78.98.

<u>The correct option is A.</u>

3 0
3 years ago
3) What is the degree of the polynomial 5 + 4x^2 + 3^3 − 5<br> A) 1 <br> B) 2<br> C) 3 <br> D) 4
Marina86 [1]

Answer:

its B

Step-by-step explanation:

have a great day my man

7 0
2 years ago
1) There are about 20 million people in New York State, with a total land area of about 47,000 square miles.
Nata [24]

Step-by-step explanation:

B. 426 people per square. mile

5 0
2 years ago
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