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3 years ago

15

Trying to help daughter solve problem.Where would you place the parentheses?2x4+6-2+8/4=18

2 answers:

Elina [12.6K]3 years ago

8 0

<span>I have it, Watson !

<em>2 x (4 + 6 - 2) + (8/4)</em> .

-- The first parentheses encloses (4 + 6 - 2) and that's 8.

-- The fraction 8/4 is equal to 2 .

-- So now you have 2 x (8) + 2 . That's 16 + 2 = 18</span> .

tiny-mole [99]3 years ago

5 0

Here the order of operation is very important. I put few parenthesis to show you what is the correct result. First you have to multiply/divide, then u can add/subtract
$(2*4)+(6-2)+\frac{8}{4}=8-4+2=6$

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Charlene sold 15 magazines subscriptions for the fundraiser. Mark sold 17 subscriptions and Paul sold 12. How many magazine subs

Dahasolnce [82]

15+17+12= 44
The sold 44 magazine subscriptions in total.

5 0

3 years ago

The pilot of a Coast Guard patrol aircraft on a search mission had just spotted a disabled fishing trawler and decided to go in

Svetllana [295]

Answer:

$\frac{dD}{dt}= 181\frac{168}{1600}$

Step-by-step explanation:

h= 1000 ft

dx/dt= 232 ft/sec

D= 1600 ft

First, we have to find a distance x ( shown in the figure)

applying pythagorus theorem

D^2= h^2+x^2................1

x^2= D^2-h^2

= 1600^2-1000^2

x^2= 1560000

x=1248.99 m

Now we can find out how fast the aircraft is receding from the trawler

( notice that the height is not changing)

so differentiating equation 1 w.r.t t we get

$\frac{d}{dt} (D^2)= \frac{d}{dt}(h^2+x^2)$

2DD'= 2hh'+2xx'

$D\frac{dD}{dt}= h\frac{dh}{dt}+x\frac{dx}{dt}$

now putting values we get

$1600\frac{dD}{dt}= 1000\times0+232\times1249$

$\frac{dD}{dt}= 181\frac{168}{1600}$

6 0

3 years ago

Determine the recursive function that defines the sequence.

Strike441 [17]

<h2>Answer:</h2>

Option: C is the correct answer.

C. $f(1)=4\\\\f(n)=5\cdot f(n-1)\ ;\ n\geq 2$

<h2>Step-by-step explanation:</h2>

Recursive Formula--

It is the formula which is used to represent the nth term of a sequence in terms of (n-1)th term of the sequence.

Here we are given a table of values by:

n f(n)

1 4

2 20

3 100

i.e. when n=1 we have:

$f(1)=4$

Also,

$f(2)=20\\\\i.e.\\\\f(2)=5\cdot 4\\\\i.e.\\\\f(2)=5\cdot f(1)$

Also,

$f(3)=100\\\\i.e.\\\\f(3)=5\cdot 20\\\\i.e.\\\\f(3)=5\cdot f(2)$

Hence, the recursive formula is:

$f(n)=5\cdot f(n-1)\ for\ n\geq 2$

5 0

3 years ago

Is .4% = 4/1,000?<br><br>.4% = 4/1,000?

strojnjashka [21]

Yes because 0.4% put into a decimal is 0.004 and the four in in the thousandths place

6 0

3 years ago

Use the distance formula to slove how far the points are on the a coordinate plane. Points are (7,5)(3,2)

maksim [4K]

Answer:

distance is 5 units

Step-by-step explanation:

plug in values

4 0

3 years ago