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2 years ago

6

Marcia has x number of homework problems. When she has done 10 of them, she is 1/4 finished. How many homework problems did she

have

1 answer:

professor190 [17]2 years ago

8 0

Answer:

so in 10 it is 1/4 so

here it's obvious if 10 in 1 then 40 in 4

so she have 40 problems

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The electrician charges $50 per visit plus $12 per hour of work. Steve hires the electrician to do some work for his house. If S

TEA [102]

Answer:

12.5 hours

Step-by-step explanation:

budget: 200

fix cost: 50

hourly rate: 12

hours: ?

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First we deduct the fix 50 dollars cost from the total budget.

Then we divide the remaining amount with the hourly rate

( 200 - 50 ) / 12 = ?

? = 12.5 hours

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2 years ago

The table below represents the function F. 3 7 F(x) 4 15 5 31 7 127 8 255 The equation that represents this function is?

timurjin [86]

The table is an exponential function, and the equation that represents this function is $f(x) =2^x -1$

<h3>The equation of the table</h3>

The table is given as:

x F(x)

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5 31

7 127

8 255

Rewrite the table as:

x F(x)

4 16 - 1

5 32 - 1

7 128 - 1

8 256 - 1

Express as a base of 2

x F(x)

4 2⁴ - 1

5 2⁵- 1

7 2⁷ - 1

8 2⁸ - 1

Notice that the function is 1 subtracted from 2 raised to the power of the input.

This is represented as:

$f(x) =2^x -1$

Hence, the equation of the table is $f(x) =2^x -1$

Read more about exponential functions at

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4 0

1 year ago

F(x) = 3x + 5<br> Work out a if f(a)= -13

vekshin1

Answer:

a = - 6

Step-by-step explanation:

Given

f(x) = 3x + 5 , then

f(a) = 3a + 5 and f(a) = - 13 , then equating the right sides

3a + 5 = - 13 ( subtract 5 from both sides )

3a = - 18 ( divide both sides by 3 )

a = - 6

6 0

2 years ago

Read 2 more answers

Nina has some nickels and 9 pennies in her pocket. Her friend, Maurice has twice as many nickels as Nina. Together these coins a

algol13

So Maurice would have 2N nickels

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Each nickel is 5 pennies

3N of nickels = 15N pennies

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Their worth is 84 cents

15N + 9 = 84

15N = 75

N = 75/15 = 5

N = 5

This means Nina has 5 nickels.

4 0

3 years ago

The most accurate estimation 5+4

MariettaO [177]

The most accurate "estimation" for 5+4 is um... 9

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2 years ago