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2 years ago

1. algebraic expression

1 answer:

6 0

3. constant - D. a numerical value
2. coefficient - A. the constant preceding the variables in a product
4. expression -E. a mathematical phrase....
5. variable - B. a letter... representing an unkown
1. algebraic expression - C. a mathematical expression...

hope this helps

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What is f(4) for the function f(x)=3x+7?

Zolol [24]

Answer:

x=4

f(x)=3.4+7

f(x)=12+7

f(x)=19

Hope this helps.

5 0

2 years ago

Evaluate P(5, 2) 20 60 240 10

vesna_86 [32]

P(5,2) = n! /(n-r)!

n = 5, r = 2:

= (5 x 4 x 3 x 2 x 1 ) / 3 x 2 x 1

Cancel out common factors:

= 5 x 4 = 20

The answer is 20.

3 0

2 years ago

Read 2 more answers

If a person takes a prescribed dose of 10 milligrams of Valium, the amount of Valium in that person's bloodstream at any time ca

aleksandr82 [10.1K]

Answer:

(a)8.0mg

(b)36.87 hours

(c)-0.168

Step-by-step explanation:

The amount of Valium in that person's bloodstream at any time can be modeled with the exponential decay function $A ( t ) = 10 e^{ -0.0188 t$ (t in hours)

(a)After 12 Hours

$A ( 12) = 10 e^{ -0.0188*12}\\=7.98\\\approx 8.0 mg $(to the nearest tenth of a milligram)$

(b)If A(t)=5mg

Then:

$5= 10 e^{ -0.0188 t}\\$Divide both sides by 10\\0.5=e^{ -0.0188 t}\\$Take the natural logarithm of both sides\\ln (0.5)=-0.0188 t\\t=ln (0.5) \div (-0.0188)\\$t=36.87 hours (to two decimal places.)$

(c)

$A ( t ) = 10 e^{ -0.0188 t}\\A'(t)=10(-0.0188)e^{ -0.0188 t}\\A'(t)=-0.188e^{ -0.0188 t}\\$At 6 hours, the rate at which the amount of Valium is decaying therefore is:\\A'(6)=-0.188e^{ -0.0188*6}\\$=-0.168 ( to three decimal places)$

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2 years ago

Describe the correlation between the number of a miles driver logs and the drivers age

Sliva [168]

There is no correlation it’s a scattered plot

6 0

2 years ago

Two figures are similar. One is 18 inches tall and the second is two feet tall.What is the scale factor. Not a multiple choice q

sladkih [1.3K]

Answer:

3:4

Step-by-step explanation:

Compare the heights: 18 in and 24 in.

Then find the scale factor through division: 18/24 = 3/4 or 3:4

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2 years ago