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4 years ago

Hey guys can you help me im in pain and cant think strait.

Mathematics

1 answer:

Fudgin [204]4 years ago

6 0

Answer:

123

Step-by-step explanation:

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There are 15 pens and 10 pencils in a box. One object is selected at random and then replaced. Another is the selected. Find the

almond37 [142]

Step-by-step explanation:

1. P(pen then pencil) = 15/25 × 10/25 = 3/5 × 2/5 = 6/25

2. P(pen then pencil) + P(pencil then pen) = 6/25 + 6/25 = 12/25

3. P(pencil then pencil) = 10/25 × 10/25 = 2/5 × 2/5 = 4/25

4. P(at least 1 pen) = 1 − P(no pen) = 1 − 4/25 = 21/25

6 0

4 years ago

the sum of scott's age and greg's age is 33 years if greg's age is presented by g, scott's age represented by

lisov135 [29]

Scott would be represented by S.

6 0

4 years ago

Which graph models the solution set of 50x + 150y>1500?

hodyreva [135]

Answer:

see attached diagram

Step-by-step explanation:

First, draw the dashed line 50x+150y=1500 (dashed because the inequality is without notion "or equal to"). You can do it finding x and y intercepts.

When x=0, then 150y=1500, y=10.

When y=0, then 50x=1500, x=30.

Connect points (0,10) and (30,0) to get needed dashed line.

Then determine which region (semiplane) you have to choose. Note that origin's coordinates (0,0) do not satisfy the inequality 50x + 150y>1500, because

$50\cdot 0+150\cdot 0=0$

This means that origin lies outside the needed region, so you have to choose the semiplane that do not contain origin (see attached diagram).

4 0

3 years ago

Read 2 more answers

Translate this sentence into an equation. 64 is the sum of 20 and Carlos's height. Use the variable c to represent Carlos's heig

vaieri [72.5K]

The answer is 64 = 20 + c

5 0

3 years ago

Read 2 more answers

Why is it helpful to write numbers in different ways

Goshia [24]

You should write numbers in as many ways as you possibly can to make new connections in your brain. Knowing how to write numbers in many different ways can help you solve complex problems more easily. Doing this can also reinforce the mathematical principles and logic you have memorised.

Writing one in many different ways:

1=1/1=2/2=3/3=4/4=(-1)/(-1)=(-2)/(-2)

=1.0=1.00=1.000=(1/2)+(1/2)=(1/3)+(1/3)+(1/3)

=(1/4)+(1/4)+(1/4)+(1/4)

Writing a half in many different ways:

1/2=(1/4)+(1/4)=(1/6)+(1/6)+(1/6)

=(1/8)+(1/8)+(1/8)+(1/8)=4*(1/8)

=2/4=3/6=4/8=5/10=0.5=0.50

etc...etc...

6 0

3 years ago