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sladkih [1.3K]
3 years ago
8

If 15 pen cost $3.90, which equation would help determine the cost of 6 pens?

Mathematics
1 answer:
madreJ [45]3 years ago
8 0

Answer

1.56

Step-by-step explanation:

You must find the unit rate. To do so, you must divide 3.90 by 15. That will give you 0.26. After, times 6 and .26 to get your answer. Hope this helps.

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In the picture below and show steps or explain
telo118 [61]

An operation that is done to a value and it stays the same, it is called the "identity property".

Some quick examples:

Adding any number with zero will result in the same number.

Multiplying any number with one will result in the same number.

Hope this helps!

3 0
2 years ago
Find the volume of the solid. The volume of the solid is ____ cubic centimeters
Illusion [34]
Is there a picture ?
6 0
3 years ago
The hypotenuse of a right triangle is twice the length of one of its legs. Th length of the other leg is three feet. Find the le
IgorLugansk [536]
Let
x----> the length side of the hypotenuse
y----> the length side of the <span>unknown leg

we know that
x=2*y----> equation 1
applying the Pythagoras Theorem
x</span>²=y²+3²-----> equation 2

substitute equation 1 in equation 2
[2*y]²=y²+3²----> 4*y²-y²=9-----> 3*y²=9----> y²=3
y=√3 ft
x=2*y----> x=2*√3 ft

the answer is
<span>the lengths of the three sides are
</span>hypotenuse=2√3 ft
one leg=√3 ft
other leg=3 ft

7 0
3 years ago
Expanded form of 54.98
lianna [129]
Answer:
8 + 90 + NaN + 4000 + 50000

Mark me! thanks :)
3 0
3 years ago
Read 2 more answers
Select the correct answer.
Yuliya22 [10]

Answer: B is your correct answer.

Step-by-step explanation: If she has already made $95.00 from selling jam and made $24.00 from demonstrations you add those together to get $119. Then you subtract $119.00 from $450.00 and you'll have $331.00 left to make. Finally you divide $331.00 by $5.00 (cost of jam) and you'll find that you have to sell 66 more jars of jam.

5 0
3 years ago
Read 2 more answers
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