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kaheart [24]
2 years ago
14

Justin has 20 pencils 25 erasers and 40 paper clip he organized them into groups with the same number of item of each group. all

the items in a group will be the same type. how many items can he put in each group?
Mathematics
2 answers:
Kaylis [27]2 years ago
7 0

Justin can put 4 pencils, 5 erasers, and 8 paperclips into 5 different bags. If he hands out the bags, 5 different recipients will have the same things in each bag.                             20/5=4.                                                    25/5=5.                                                    40/5=8.

4vir4ik [10]2 years ago
4 0

Pencils:  

20 /5=4


Erasers:  

25 /5=5


Paper clips:  

40 /5=8


Justin can put 4 pencils, 5 erasers, and 8 paperclips into 5 different bags. If he hands out the bags, 5 different recipients will have the same things in each bag.

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last saturday i went to a book store and bought the following items on pocket notebook which cost 23.75; a set of colored pens w
Iteru [2.4K]

Answer:

The amount of change she received is

$16.1

Step-by-step explanation:

1.what is asked in the problem?

We are to find how much change she received

what are the given facts?

She bought:

notebook which cost 23.75; a set of colored pens which cost 36.20 and a liquid eraser which cost 23.95

She gave the cashier $100

2.what operation to be used to solve the problem ?

Addition and Subtraction operation

3.solve

= $100 - ($23.75 + $36.20 + $23.95)

= $100 - $83.9

= $16.1

The amount of change she received is

$16.1

5 0
3 years ago
Consider the case of a triangle with sides 5, 12, and the angle between them 90°.
Daniel [21]

Answer:

a) Applying Pithagoras Theorem

b) Trigonometric relations

c) No we can not

d) No we can not

e) See step-by-step explanation

f) See step-by-step-explanation

Step-by-step explanation:

a) The easiest method for calculating the missing side is applying Pithagoras Theorem

c²  =  a²  +  b²

c²  =  (5)²  +  (12)²      ⇒  c²  = 25 + 144    ⇒ c²  =  169    ⇒  c  = 13

b) The easiest method to find the missing angles, is to calculate the sin∠ and then look for arcsin fuction in tables.

sin ∠α = 5/13    sin ∠α = 0.3846    ⇒      arcsin (0.3846 )   α  = 23⁰

Now we can either get the other angle subtracting 180 - 90 - 23 = 67⁰

Or calculating sinβ = 12 /13    sinβ = 0.9230  arcsin(0.9230)   β = 67⁰

c) The law of cosines should not be applied to right triangles, in fact for instance in our particular case we have:

Question a)

c²  = a² + b² - 2*a*b*cos90⁰   (law of cosines ) but cos 90⁰ = 0

then c²  = a² + b² which is the expression for theorem of Pithagoras

In case you look for calculating the missing angles

c²  = a²  +  b²  - 2*5*13*cos α

169 = 25  +  144 - 2*5*13* cos α

As you can see 169 - 25 - 144 = 0

Then we can not  apply law of cosine in right triangles, we shoul apply trigonometric relations and Pithagoras theorem, and as we saw you can get the expression of Pithagoras theorem from cosine law

c²  =  a²  +  b²  - 2*a*b*cos∠90°    cos ∠ 90°  = 0

Then     c²  =  a²  +  b²

3 0
3 years ago
What is the answer to the digit 7 in 0.37 has a value_____ the value of the 7 in 0.73?
Inessa05 [86]
What do you mean? 7 in 0.37 is 0.07 or 7 hundredths.
7 in 0.73 is 0.7 or 7 tenths?
Is that what you meant...
6 0
3 years ago
All angles are right angles this describes a parallelogram, rhombus, rectangle, or a square (there can be more than one answer
Sidana [21]
Rectangle and square
7 0
3 years ago
There are 380 lightbulbs lined up in a row in a long room each bulb has his own switch and it’s currently switched off each bulb
BARSIC [14]

Flipping the bulbs is an illustration of sequence and patterns

19 bulbs would remain on.

<h3>How to determine the number of bulbs that will be on</h3>

The sequence of turning the bulbs off and on, would change the state of the bulbs until the 380th process.

While changing the state of the bulbs, the bulb at the perfect square positions would remain on.

There are 19 perfect square numbers between 1 and 380 (inclusive)

Hence, 19 bulbs would remain on.

Read more about sequence and patterns at:

brainly.com/question/15590116

6 0
2 years ago
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