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Lena [83]
2 years ago
15

1. Choose any two pencils. How many different choices do

Mathematics
1 answer:
Tema [17]2 years ago
5 0

Answer: i came up with 15 different combos

Step-by-step explanation:

red orange

red blue

red purple

red yellow

red green

orange blue

orange purple

orange yellow

orange green

blue purple

blue yellow

blue green

purple yellow

purple green

yellow green

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4. Diego is thinking of two positive numbers. He says, "If we triple the first number and
aleksandr82 [10.1K]

Answer:

3<em>x </em>+ 2<em>y</em> = 34. and two possible pairs of positive numbers are  (<em>x</em>, <em>y</em>) = (10, 2) and (<em>x</em>, <em>y</em>) = (4, 11).

Step-by-step explanation:

 Let the First positive number be <em>x</em> and second positive number be <em>y.</em>

Triple of first number = 3<em>x</em>

double of second number = 2<em>y</em>

According to question,

3<em>x </em>+ 2<em>y</em> = 34

Therefore, the equation is 3<em>x </em>+ 2<em>y</em> = 34

So the two possible pair of numbers Diego would be thinking of must satisfy the equation 3<em>x </em>+ 2<em>y</em> = 34

Now,  3<em>x </em>+ 2<em>y</em> = 34

3<em>x </em>= 34 - 2<em>y</em>

Let x = 10 and by substituting its value in above expression,

3 \times 10 = 34 - 2y

30 = 34 - 2y

2y = 34 - 30

2y = 4

y = 2

Therefore first pair (<em>x</em>, <em>y</em>) = (10, 2)

In the same way put x = 4 then,

3<em>x </em>= 34 - 2<em>y</em>

3 \times 4 = 34 - 2y

2y = 34 - 12

2y = 22

y = 11

Therefore first pair (<em>x</em>, <em>y</em>) = (4, 11)

Therefore, (<em>x</em>, <em>y</em>) = (4, 11) and  (<em>x</em>, <em>y</em>) = (10, 2) are the two possible pairs of numbers Diego could be thinking of as these both values satisfy the equation 3<em>x </em>+ 2<em>y</em> = 34.  

8 0
2 years ago
What is 1/4 plus 1/3, will give brainliest and thank you and rate and give 15 points plz help
Slav-nsk [51]
First, you have to convert 1/4 and 1/3 to have the same denominator. 

So, 1/4 x 3 = 3/12. 1/3 x 4 = 4/12.

Now, you can add 3/12 + 4/12 = 7/12.
4 0
2 years ago
The mass of a Moon rock is 3.5 kg. What is the mass of the moon rock in grams?
GrogVix [38]
It is 3500 grams
hope i helped
7 0
3 years ago
Read 2 more answers
Use the diagram, which is not drawn to scale, to decide which proportions are true.
PtichkaEL [24]

Answer:

I and IV only.

Step-by-step explanation:

There are 3 similar triangles in the diagram, so corresponding sides are in the same ratio. You can identify corresponding sides by checking that the angles opposite them are congruent.

5 0
2 years ago
Simplify 7(A - 6).<br> A - 6<br> 7A - 42<br> 7A - 6
KIM [24]
So, you already know that you have to multiply the value of 7 by the variable and the number inside of the parentheses. So, 7 x A = 7A, and 7 times -6 equals -42. So, your answer would most likely be 7a - 42.
8 0
3 years ago
Read 2 more answers
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