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3 years ago

Please help me understand

Mathematics

1 answer:

IrinaK [193]3 years ago

7 0

Answer:

x = 4

Step-by-step explanation:

If you find my answer helpful, please consider marking it Brainliest

Anf if you still have any questions about the way I solved it, don't hesitate to ask me in the comments below :)

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Please help me on this

11111nata11111 [884]

Answer: 11 boxes of cards for $72

Step-by-step explanation:

Brennan's equation would be

y=6x+6

Gabriel's Equation would be

y=5x+17

when they spend the same amount the equations will be equal

6x+6=5x+17

x+6= 11

x=11

so 11 boxes they would spend the same

To figure out cost, put 11 into the first equations

y=6(11)+6= 66+6= 72

y=5(11)+17= 55+17 = 72

so they each spent $72

5 0

3 years ago

Hi guys! Please help 20 points and brainliest and work needs to be shown! Thanks

Soloha48 [4]

Answer:

yes it is a right triangle

Step-by-step explanation:

i promise u im correct !

6 0

3 years ago

Approximate the square root of 39

Natali5045456 [20]

The answer you're looking for is 6.24

4 0

3 years ago

Read 2 more answers

at 1:00 pm you have 24 megabytes of a movie. at 1:15 pm you have 96 megabytes what is the download rate in megabytes per minute

gregori [183]

In the 15 minutes that have passed a total of 96-14 = 82 Mbs have been downloaded.

82/15 = 5.47 Mbs/min

5 0

3 years ago

After calculating the sample size needed to estimate a population proportion to within 0.05, you have been told that the maximum

Svetlanka [38]

Answer: 40000

Step-by-step explanation:

The formula to find the sample size is given by :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$ , where p is the prior estimate of the population proportion.

Here we can see that the sample size is inversely proportion withe square of margin of error.

i.e. $n\ \alpha\ \dfrac{1}{E^2}$

By the equation inverse variation, we have

$n_1E_1^2=n_2E_2^2$

Given : $E_1=0.05$ $n_1=1000$

$E_2=0.025$

Then, we have

$(1000)(0.05)^2=n_2(0.025)^2\\\\\Rightarrow\ 2.5=0.000625n_2\\\\\Rightarrow\ n_2=\dfrac{2.5}{0.000625}=4000$

Hence, the sample size will now have to be 4000.

6 0

3 years ago