MATHEMATICS HIGH SCHOOL

(1)/(x)+(1)/(2x+1) = (1)/(3.5)
SOLVE WITH STEPS PLS I NEED IT QUICK

Answers

Answer 1

Answer:

$\n \sf\longmapsto (1)/(x)+(1)/(2x+3)=(1)/(3.5)$

$\n \sf\longmapsto (2x+1+x)/(2x^2+x)=(1)/(3.5)$

$\n \sf\longmapsto (3x+1)/(2x^2+x)=(1)/(3.5)$

$\n \sf\longmapsto 3.5(3x+1)=2x^2+x$

$\n \sf\longmapsto 11.5x+3.5=2x^2+x$

$\n \sf\longmapsto 2x^2-9.5x-3.5=0$

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N to the first power divided by (n - r) to the first power

Answers

$(n^1)/((n-r)^1)=(n)/(n-r)$

Krystal made 8 quarts of soup on monday 5 quarts of soup on tuesday and 5 quarts of soup on wnesday if she serves each guest 1 cup of soup how many guest can she serve in all

Answers

72 guests because 4 cups equals 1 quart and if she makes 18 quarts 4×18=72.

4 cups equals 1 quart
8+5+5=18
18*4=72 guests

Please help i cant figure this out

Answers

First work out the bracket: -1 2/3, make this into one fraction
a b/c = (ac+b)/c
ignore the negative for now, so 3+2= 5 so your fraction is -5/3
Then multiply: 3/5 x -5/3 = -15/15 so your answer is -1

-1 2/3 = - (1*3+2/3)
= - (3+2/3)
= -5/3

Now lets multiply
= 3/5 * -5/3
= 3*-5 / 5*15
= -15/15
= -1

A store buys an item for $50 and marks it up 100%. What is the price?

Answers

Answer

= $100

Explanation

Profit = selling price - buying price

percentage profit = profit/buying price × 100%

100% = profit /$50

Profit = 100% × $50

= 100/100 × $50

= 1 × $50

= $50

Selling price = buying price + profit

= $50 + $50

= $100

$100

100% would be doubling it.

The ratio of the weight of an object on Planet A to the weight of the same object on Planet B is 100 to 3. If an elephant weighs 3800 pounds on Planet A, find the elephants weight on Planet B

Answers

Answer:

the elephants weight on Planet B is 114.first you divide 3800 by 100 it gives you 38 then multiply 38 times 3 it gives you 114.the answer of the question is 114. you have to use unit rate or the whole enchilada method.

Step-by-step explanation:

the assembly machine in your plant can produce 36,200 parts in 9 hours. How many parts can it produce in 18 hours