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PIT_PIT [208]
3 years ago
5

you can use the expression 5n to determine the amount of money you have in cents, when you have n nickels. Find the amount of mo

ney you have, in cents, when you have 18 nickels
Mathematics
1 answer:
Anni [7]3 years ago
8 0

Answer:

90 cents

Step-by-step explanation:

Find how much money you have by plugging in 18 as n into the expression:

5n

5(18)

Multiply:

= 90

So, when you have 18 nickels, you have 90 cents

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How do you solve law of cosine?​
Effectus [21]

Draw and label a standard Oblique Triangle, as we’ve done in our previous lessons.

Determine the given congruence, either SAS or SSS, and pick the equation that helps you solve for either a missing side or angle.

Plug into your chosen equation and solve.

The "Law of Cosines" can be used to calculate one side of a triangle when the angle opposite and the other two sides are known. The "Law of Cosines" can be expressed as c2 = a2 + b2 - 2 a b cos C (1)

The cosine rule is an extension of this mathematic principal that makes it effective for non-right triangles and states that in regard to a certain angle, the square of the side of the triangle opposite that angle is equal to the squares of the other two sides added together, minus two times both..

4 0
3 years ago
Read 2 more answers
Three more than twice a number is less than negative thirteen. Solve the inequality for the unknown number.
Goshia [24]

Answer:

Step-by-step explanation:

The number = x

Three more than the number = x + 3

twice the number = 2x

which means:

           

          2x + 3 < -13

          2x + 3 -3 < -13 -3                 (subtract 3 from both sides)

          2x < -16

          2x/2 < -16/2                       (divide 2 from both sides)

          x < -8

4 0
2 years ago
Piece made in 32min factory cut the time by 8% then cut time by 5% how long does it take to make the piece now in min
DiKsa [7]

Answer:

27.968 mins

Step-by-step explanation:

1) we need to find 8% of 32:

32*0.08=2.56

so 8% of 32 is 2.56 mins.

we need to subtract 2.56 by 32 since its says the times was cut by 8%

so

32-2.56=29.44

now 5% of 29.44:

29.44*0.05=1.472

1.472 mins

so

29.44-1.472=27.968

Hope this helps!

4 0
3 years ago
Express x cm in metres​
Viktor [21]

Answer:

0.0X m

Step-by-step explanation:

100 cm = 1 m

According to the question, we have

\frac{x}{100} = 1 m

0.0X = 1 m

4 0
3 years ago
Michael cycles 4 kilometers during each trip to work. Write an equation that shows the relationship between the number of trips
Lady bird [3.3K]

Answer:

The equation that represents the total distance travelled by numbers of times he goes to work by Michael is y = 4*x

Step-by-step explanation:

Since Michael has to travel 4 km each time he goes to work if he goes to work 2 times he'll have to travel 8 km, if he goes 3 times he'll have to travel 12 km. If we keep doing this we'll realize that the distance travelled by Michael is given by the number of times he goes to work multiplied by 4. The equation that represents that is:

y = 4*x

4 0
3 years ago
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