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Alekssandra [29.7K]
2 years ago
14

What does it mean to evaluate an expression in math?

Mathematics
2 answers:
Ymorist [56]2 years ago
7 0
<span>It mainly means 'simplifying an expression down to a single numerical value', I believe.</span>
zzz [600]2 years ago
7 0

Step-by-step explanation: To evaluate an expression means simplifying it down to a number and usually you will be given variables to substitute in and evaluate.

For example, let's evaluate the expression 3y + 7 when y = 2.

We simply multiply 3 x 2 and add 7 or 3(2) + 7.

3 x 2 is 6 so we have 6 + 7 which is 13.

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Please help me this is from khan academy :(((
Dmitrij [34]

Answer:

y=1.4x+6.8

Step-by-step explanation:

(-2;4) (-7;-3)

4=-2k+b

-3=-7k+b

7=5k

k=1.4

-2.8+b=4

b=6.8

I already know k and b so I can write an equation.

y=1.4x+6.8

6 0
3 years ago
.......................................
Liono4ka [1.6K]

Answer:

what is your question??????

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
can someone please help me with this? I know it’s simple but I’m having a really hard time doing it .
Naily [24]

Radius= 12÷2 => 6 cm

diameter= 12 cm

circumference = 2πr

=> 2× 22/7 × radius

=> 37.7 cm

Hope it helps ^^

6 0
3 years ago
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The distance between major cracks in a highway follows an exponential distribution with a mean of 5 miles. (a) What is the proba
Nonamiya [84]

Answer:

P(Y=0) = 0.1353

Step-by-step explanation:

From the question we are told that:

Exponential distribution mean \=x = 5 miles

Distance d=10miles

Generally the equation for Exponential distribution is mathematically given by

 \lambda=\frac{1}{E(X)}

 \lambda=\frac{1}{5}

Therefore

Possion Y

 10\lambda=10*(1/5)

 10\lambda=2

Generally the equation for  The probability that there are no major cracks in a 10 mile stretch of the highway is mathematically given by

 P(Y=0) = \frac{e-2 (2)0}{0!}

 P(Y=0) = e-2

 P(Y=0) = 0.1353

7 0
3 years ago
Which number doesn’t belong with -10/2 , -13.4, √26, -31/6
Salsk061 [2.6K]

I think that 9 does not belong because 9 is a one dig it number and 25 43 and 16 are two dig it number. Also 25,43,16 are even but 9 is odd i hope this helps you and i hope it is right

5 0
3 years ago
Read 2 more answers
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