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nikklg [1K]
3 years ago
8

You have a bag of marbles that has 3 blue marbles and 4 red ones. What is the chance that you pick a blue OR a red marble?

Mathematics
1 answer:
nikdorinn [45]3 years ago
5 0

Answer:

7/7

Step-by-step explanation:

Add up the amount of the marbles in total and read what color the marble they ask for the chances of. The color of marble should go first then the total of the marbles. (they could ask for more than one color so just add up both the colors given.)

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Help me with math work please
shutvik [7]

2. b=-15   4. b=9   5. m=6 b=1   6. m=-4 b=140

6 0
3 years ago
A cleaning company charges a fixed amount for a house call and a second amount for each room it cleans. The total cost to clean
yanalaym [24]

Answer:

$110

Step-by-step explanation:

Let the fixed amount charged be f and the amount charged to clean a room be r.

To clean six rooms , the company would charge the following, the fixed amount for the call plus the amount charged per room multiplied by 6 which of course is 6r.

Writing this in equation form,

f + 6r = 250

In likewise manner, same applies for 8 rooms.

this gives f + 8r = 320

We now have 2 equations that we will need to solve simultaneously

f + 6r = 250........(i)

f + 8r = 320........(ii)

We subtract equation ii from I to yield

2r = 70, hence r = 70/2 = 35.

We now substitute this in equation 1

f + 6(35) = 250

f + 210 = 250

f = 250 - 210 = 40

Hence, we now know that the amount charged per call is $40 while the amount charged to clean a room is $35.

We now calculate the amount charged by the company to clean 2 rooms.

This is mathematically = f + 2r

40 + 2(35) = $110.

6 0
3 years ago
PIC IS THE QUESTION AND ANSWERS
Yanka [14]
4/5 and 40/50 are both equivalent
4 0
3 years ago
Read 2 more answers
What is the value of the expression below?<br> (V9)2 +10
Wittaler [7]

to find the value of this expression, it would be easiest to use the distributive property.

(V9)2 +10

= 18V+90V

= 108V

- cherry :)

8 0
3 years ago
Read 2 more answers
Use the expression (10p+10)+(8p−1). Simplify using properties of operations and then factor the expression using the GCF.
Fofino [41]

Answer:

9 (2p + 1)

Step-by-step explanation:

(18p + 9)

GCF = 9

so, divide everything by 9

9 (2p + 1)

7 0
2 years ago
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