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1 year ago

QUICK PLEASE ANSWER

Mathematics

1 answer:

Mila [183]1 year ago

8 0

Answer:

63/80 and 7/4 * 9/20

Step-by-step explanation:

7/8 * 9/10 = 63/80

7/4 * 9/20

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A motorboat travels 275 kilometers in 5 hours going upstream. It travels 405 kilometers going downstream in the same amount of t

VladimirAG [237]

Step-by-step explanation:

$275 \times 5 = 1375$

The rate of the motorboat on still water is 1375

$405 \times 5 = 2025$

The current rate of the motorboat is 2025

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2 years ago

Madelyn has x nickels and y dimes, having a maximum of 15 coins worth no

aliina [53]

9514 1404 393

Answer:

2 nickels, 9 dimes

Step-by-step explanation:

When there are a number of overlapping shaded areas on the graph, I find it convenient to use the reverse of the inequalities. That makes the unshaded area the solution space. Here, the vertices of the triangular solution space are ...

(2, 9), (2, 13), (6, 9)

Any of the grid points within (or on) this triangle is a possible solution. One of them is (2, 9) corresponding to 2 nickels and 9 dimes.

Three solutions are shown:

(x, y) = (2, 9), (3, 10), (4, 11)

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2 years ago

PLEASE HELP 30 PTS!!! Select ALL the correct answers. Which expressions are equivalent to the following?

Oksanka [162]

Answer:

D: -5(-6x^2 + x + 2)

E: 5(2x + 1)(3x − 2)

Step-by-step explanation:

The first two answer choices have incorrect constants (25 and 3 vs -10). A factor of 5 is removed from the remaining answer choices, so let's remove a factor of 5 and see what we get:

30x^2 -5x -10 = 5(6x^2 -x -2)

An additional x cannot be factored from the expression, so choice C can be eliminated.

Multiplying each of these factors by -1 will make the product correspond to answer choice D.

Factoring will make it correspond to answer choice E, best verified by finding the x-term of the product of the binomial factors:

E: 2x(-2) +1(3x) = -x, as required

F: 2x(2) -1(3x) = x, wrong sign

The equivalent expressions are those of choices D and E.

7 0

2 years ago

A survey revealed that 31% of people are entertained by reading books, 39% are entertained by watching TV, and 30% are entertain

tester [92]

1% entertained by books
9% entertained by TV

3 0

2 years ago

Find the midpoint of the segment with the following endpoints.

Damm [24]

Answer:

(6, 8)

Step-by-step explanation:

$\left(\frac{10+2}{2}, \frac{10+6}{2} \right)=(6, 8)$

4 0

11 months ago