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2 years ago

If x represents a number, then write an expression for a number that is three more than the number

2 answers:

6 0

Saying "a number" is the same as saying "x"

"Three more than a number" is the same as "three more than x"

If you have three more of something (say, marbles) than someone else, then you have their number of marbles plus three more.

Then, "Three more than x" is the same as "three plus x", or "3 + x"

Hope this helps! :)

Luden [163]2 years ago

3 0

Watch this carefully, before it's gone:

The expression for " three more than 'x' " is . . . . . <em>( x + 3 )</em> .

Did you see it go by ?
Here it is again:

The expression for " three more than 'x' " is . . . . . <em>( x + 3 )</em> .

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Between the time lko woke up and lunchtime the temperature rose by 11 degree then by the time he went to bed the temperature dro

777dan777 [17]

The temperature is 3 degrees less then it was at lunchtime when he went to bed you didn’t ask a question or explain it so I’m assuming this is what you meant

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2 years ago

Read 2 more answers

To finish a project, you need to paint the lateral surfaces of a cube with side length 2.5 inches. Find the area that you need t

valentina_108 [34]

Answer:

$25 in^2$

Step-by-step explanation:

We want to find the lateral surface area of the cube.

The lateral surface area of a cube is given as:

$A = 4a^2$

where a = length of side of the cube

Therefore, given that the length of the side of the cube is 2.5 inches, the area you need to paint is:

$A = 4 * 2.5^2\\A = 25 in^2$

6 0

2 years ago

I’ll give brainliest!!

nignag [31]

Answer:

If A is wrong then B I think

Step-by-step explanation:

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2 years ago

A foreman for an injection-molding firm admits that on 55% of his shifts, he forgets to shut off the injection machine on his li

motikmotik

Answer:

0.8594

Step-by-step explanation:

Let a denote the event of forgetting to shut off machine and b be the event of being defective.

-A foreman forgets to shut off machine 55% of the time.

-If he forgets, 15% of molds are defective.

-If he does not, 3% of molds are defective.

#The probability that he forgot to shut off the machine is calculated as:

$P(a \ and \ b)=0.55\times 0.15\\\\=0.0825\\\\$

P(a and ~b)=0.55(1-0.15)=0.4675

P(~a and b) = (1-0.55)*0.03=0.0135

P(~a and ~b) = (1-0.55)*(1-0.03)=0.4365

#Conditional probability is defined as:

$P(a|b)=\frac{P(a \ and\ b)}{P(a)}\\\\=\frac{P(a \ and \ b)}{[(P(a \ and \ b)+P(\~a \ and \ b)}\\\\\\=\frac{0.0825}{0.0825+0.0135}\\\\\\=0.8594$

Hence, the probability that the foreman forgot to shut off the machine the previous night is 0.8594

5 0

2 years ago

What is the answer to this question

Lesechka [4]

Remark

There's a lot you don't know here. Are DE and GF parallel? Is B a right angle? You can't assume that it is. The safest way to proceed is to give x in terms of 58 and B. You might get an answer that gives you something like 32 but I don't think you can say that unless you are told somewhere that ABC is a right angle triangle with the right angle at B.

So what to do.

<BAC = 58o That's because <BAC = <IAK They vertically opposite.

<ABC + <BAC + <ACB = 180o All triangles have 180o

<ACB = 180 - 58 - <ABC Solve for an unknown angle of a triangle.

<ACB = 122 - <ABC

x = <ACB Vertically opposite angles.

x = 122 - <ABC Answer It's 32 if ABC is a right angle.

6 0

3 years ago