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Leviafan [203]
3 years ago
5

THIS IS 8TH GRADE MATH (Pre-Algebra).

Mathematics
1 answer:
gtnhenbr [62]3 years ago
3 0
First you need to set up a formula. Underline all of your givens:

<u>Spent 1/2 on clothes
$6 more for washing windows
Ended with $10.
</u>
now you need to set up an equation.
<u>
</u>You know she ended up with $10. So that will be what it equals. Then you know that she earned $6 in addition to her allowance. So this would be (x= allowance) (x+6)/2 = 10.
<u>
</u>Now you need to solve for x. 
Multiply both sides by 2.
<u>
</u>x+6=20<u>
</u>Now subtract both sides by 6 to get x alone:
<u>
</u>x=$14<u>
</u><u>
</u>
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The weights of NCAA lacrosse players are approximately normally distributed with a mean of 182 lbs and a standard deviation of 1
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Determine how much money you will have after 20 years if you invest 20,000$ at 8%, compounded continuously?
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In a study investigating a link between walking and improved​ health, researchers reported that adults walked an average of 873
Rainbow [258]

Answer:

H_0:\mu =873\\\\H_a: \mu

Step-by-step explanation:

Given : In a study investigating a link between walking and improved​ health, researchers reported that adults walked an average of 873 minutes in the past month for the purpose of health or recreation.

Claim : The true average number of minutes in the past month that adults walked for the purpose of health or recreation is lower than 873 minutes.

i.e. \mu

We know that the null hypothesis contains equal sign , then the set of hypothesis for the given situation will be :-

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4 0
3 years ago
Plz help ASAP, without using algebra! Tysm!!!
nadya68 [22]
The total travelled for the first five hours eould be 450 km and divided by three leaves 150 km per 1/5 of his journey. travelling at 75 km per hour, it would take 4 hours to get through the remaining 300 km for him trip leaving a total time of 9 hours of traveling
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3 years ago
D. 299ft<br> Math question please help <br> If you get this right I will mark you as a brainliest
natulia [17]

As the sum of the angles of a triangle is 180 degrees, we can find the measure of Angle A.

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Now that we know angle A, we can use the Law of Sines to find AB. The angle opposite BC is 58.5 degrees, which we found above. The angle opposite AB is angle C, which is 18.6 degrees.

By the Law of Sines,

AB / sin (18.6) = 943 / sin (58.5)

AB / .31896 = 943 / 0.85264

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AB = 352.7622, which is 353 rounded to the nearest whole number.


Thus, AB is 353 feet and choice A is the best answer.

5 0
3 years ago
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