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3 years ago

Write a variable expression for a number w increased by 4.

Mathematics

1 answer:

WARRIOR [948]3 years ago

4 0

A number=w
increased= + (addition)

Final answer: w+4

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In which step did Rob make a mistake?

Karolina [17]

Answer:

Explanation:

Using the PEMDAS rule:
P = parentheses
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M = multiplication
D = division
A = Addition
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Step 2: 6 + 12 - 2

Step 3: 18 - 2

Step 4: 16

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3 years ago

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3 years ago

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220 students were asked if they liked chocolate or vanilla ice cream. 140 said they liked chocolate and 120 said they liked vani

Flura [38]

Answer: D. 40

Step-by-step explanation:

Given: Number of students liked vanilla or chocolate ice cream = $n(V\cup C)=220$

Number of students liked chocolate = $n(C)=140$

Number of students liked vanilla= $n(V)=120$

Now, Number of students liked vanilla and chocolate ice cream is given by :-

$n(V\cap C)=n(C)+n(V)-n(V\cup C)\\\\\Rightarrown(V\cap C)=140+120-220\\\\\Rightarrown(V\cap C)=260-220\\\\\Rightarrown(V\cap C)=40$

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3 years ago

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3 years ago

What are the coordinates of the intersection of the graphs of 3x - y^2 = 12 and y = -3

inessss [21]

Answer:

(7,-3)

Step-by-step explanation:

y = -3

substitute in the first equation

3x - y^2 = 12

3x - (-3)^2 = 12

3x - 9 = 12

3x = 12 + 9

3x = 21

x = 7

coordinates of intersection (7,-3)

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2 years ago