MATHEMATICS HIGH SCHOOL

The sum of 1/6, 2/3, and 1/4 is A. 2/72, or 1/36.
B. 11/12.
C. 4/12, or 1/3.
D. 13/12, or 1 1/12.

Answers

Answer 1
Answer: D. 13/12, or 1 1/12.
it's correct

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Jenny is on the local swim team for the summer and has swim practice four days per week. The schedule is the same each day. The team swims in the morning and then again for 2 hours in the evening. If she swims 20 hours per week, how long does she swim each morning?
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Find the GCF of the given polynomial. 8x^6y^5 - 3x^8y^3

Brian is participating in a 4-day cross-country biking challenge. He biked for 48, 55, and 58 miles on the first three days. How many miles does he need to bike on the last day so that his average (mean) is 54 miles per day?​

Answers

Answer:

55

Step-by-step explanation:

(55+55+58+48) ÷4

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F(x)=1\3x^2+3x-18
Please help with steps

Answers

So far, you've only defined f(x).  You haven't asked a question.

Okay, it looks like you're going to have to do this on your own (me too lol). I'm guessing you have to make a video also?

a landscaper is designing a flower garden in the shape of a trapezoid. she want to make to shorter base 3 yards greater than the height and the longer base 7 yards greater than the base. she wants the area 295 square yards. the situation is modeled by the equation h^2+5h=295. use the quadratic formula to find the height that will give the desired area

Answers

we know that

The formula to calculate the solutions of the quadratic equation of the form ax^(2) +bx+c=0  is equal to

x=\frac{-b(+/-)\sqrt{b^(2)-4ac}}{2a}

in this problem we have

h^(2) +5h=295

equate to zero

h^(2) +5h-295=0

a=1\ b=5\ c=-295

substitute in the formula

x=\frac{-5(+/-)\sqrt{5^(2)-4(1)(-295)}}{2*1}

x=(-5(+/-)√(25+1,180))/(2)

x=(-5(+/-)√(1,205))/(2)

the positive solution is

x=(-5+√(1,205))/(2)=14.86\ yd

therefore

the answer is

The height is 14.86\ yd
put you formula in this way:  ax^2+bx+c=0 this is  h^2+5h-295=0
Now solve with the second grade equation
a=1, b=5, c=-295
you will get h=14.86 and h=-19.86, you can not have negative numbers so the only answer is 14.86

From a set of eight marbles, five red and three white, we choose one at random. What are the odds in favor of choosing a red marble?

Answers

There's a 5/8 chance that you will choose the red marble and there's only 3/8 chance for a white marble.

At best buy they have a 42" TV that sells for $1250 and is on sale 15% and sales tax is 6%.What is the final cost?

Answers

ok so
sale is 15% off
and add 6% tax

100-15=85
100+6=106

therefor
1250 with 15% discount plus 6% tax means
1250 times 85% times 106% =
1250 times 0.85 times 1.06=1126.25
final cost=$1126.25
First Find 15% of the original price to find the sales price.

1250 x 0.15= 187.50

1250 - 187.50= 1062.5

Then to find your tax, multiply 1062.50 by 0.06.

1062.50 x 0.06= 63.75

Your total price would be: 1126.25 :)

A box of uncooked spaghetti cost $0.1369 per ounce. how much is this cost to the nearest cent?

Answers

The cost to the nearest sent is 0.14

This is because you can round the .136 up to the nearest hundredths place.
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