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notsponge [240]
3 years ago
14

Evaluate a+4 when a=7

Mathematics
2 answers:
slavikrds [6]3 years ago
5 0

Answer:

11

Step-by-step explanation:

Sub in 7 for a

olga nikolaevna [1]3 years ago
4 0

Answer:

11

Step-by-step explanation:

a+4

Let a=7

7+4

11

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1. hank the handyman charges a flat fee of $75 for a visit plus $45 per hour or fraction of an hour. mr. fixits rates in dollars
pychu [463]

Answer:

Hello, the answer is Hank charges $25 more than Mr. Fixit.

8 0
3 years ago
Anne is checking out of a hotel. The price
kolezko [41]
The tax is 2.88 so it would be 48.00 +2.88=50.88
She will pay $50.88 with tax
3 0
2 years ago
The function f(x) = 1.50x + 12.50 relates how much kelsey pays for digital service, f(x), to the number of movies, x, she stream
Brums [2.3K]

f(18) = 39.50

This gives the monthly cost Kelsey will pay if she streams 18 movies in a month

Step-by-step explanation:

Given function is:

f(x) = 1.50x+12.50

Here x is the number of movies

so for f(18), this means that the total number of movies will be 18

Solving

f(18) = 1.50(18)+12.50\\f(18) = 27+12.50\\f(18) = 39.50

Hence,

f(18) = 39.50

This gives the monthly cost Kelsey will pay if she streams 18 movies in a month

Keywords: functions, Domain,range

Learn more about functions at:

  • brainly.com/question/4021035
  • brainly.com/question/4034547

#LearnwithBrainly

6 0
3 years ago
Which of the following is equivalent to 2 ln e^ln 5x = 2 ln 15?
neonofarm [45]

Answer:

x  = 3

Step-by-step explanation:

Given in the question an equation,

2lne^{ln5x}=2ln15

Step 1

e^{lnx}=x

so,

2ln(5x)=2ln15

Step 2

cancel 2 on both sides of the equation

ln{5x}=ln15

Step 3

ln{5x}-ln15=0

ln\frac{5x}{15}=0

Step 4

ln\frac{x}{3}=0

Step 5

e^{ln\frac{x}{3}}=e^{0}

Step 6

x/3 = 1

x = 3(1)

x = 3

8 0
3 years ago
Find the number b such that the line y = b divides the region bounded by the curves y = 25x2 and y = 1 into two regions with equ
Dennis_Churaev [7]

Answer:

y=1/∛4 divides the area in half

Step-by-step explanation:

since the minimum value of x² is 0 (for x=0 ) and for y=1

1 = 25*x² → x= ±√(1/25) = ±1/5

then the total area between y=1  and y = 25*x²  is bounded to  x=±1/5 and y=0 . Since there is a direct relationship between x and y , we can find the value of x=a that divides the region in 2 of the same area. thus

Area below x=C = Area above x=C

Area below x=C = Total area -  Area below x=C

2*Area below x=C = Total area

Area below x=C = Total area /2

∫ 25*x² dx from x=c to x=-c =  1/2 ∫ 25*x² dx from x=1/5  to x=-1/5

25*[c³/3 - (-c)³/3] = 25/2 * [(1/5)³/3 - (-1/5)³/3]

2*c³/3 = (1/5)³/3

c = 1/(5*∛2)

thus

y=25* x²  = 25*[1/(5*∛2)]² = 1/∛4

thus the line y=1/∛4 divides the area in half

4 0
3 years ago
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