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3 years ago

30 divided by 1.25 with work

Mathematics

1 answer:

vesna_86 [32]3 years ago

6 0

Answer:

Step-by-step explanation:

If you need an explaination you should immediatly remove yourself from the Gene pool, this is a 3rd grade question.

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After 85% reduction you purchase a new washing machine for $75. What was the original price of the machine

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I believe the answer is $2125 after double checking my skills with a scientific calculator

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3 years ago

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Use grouping symbols, exponents, and symbols for addition, subtraction, multiplication, and division with the digits 1,9,8 and 7

algol13

The answer is b for this because if you do the math right you will get 7

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3 years ago

If $2,400 is divided evenly by 3 charities, how many dollars does each charity get?? ( Please help)

zhenek [66]

Answer:

$800

Step-by-step explanation:

2,400/3 is 800

Hope this helps

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3 years ago

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The product of two consecutive odd integers is 99. If

bonufazy [111]

The equation in terms of x is x(x + 2) = 99 or $x^2 + 2x - 99 = 0$

The pairs of integers are -11 and -9 or 9 and 11

Solution:

Let the two consecutive odd integers be x and x + 2

Let "x" be the smallest integer

Given that product of two consecutive odd integers is 99

To find: an equation in terms of x

Product of x and x + 2 = 99

$x(x + 2) = 99\\\\x^2 + 2x = 99\\\\x^2 + 2x - 99 = 0$

Thus the equation in terms of x is found

Let us solve the above equation to find all pairs of integers

Solve the quadratic equation by grouping method

Middle term 2x can be written as 11x - 9x

$\rightarrow x^2 + 2x - 99 = 0\\\\\rightarrow x^2 + 11x - 9x -99 = 0$

Now group the terms,

$\rightarrow (x^2 + 11x) - (9x + 99) = 0$

Take "x" as common term from first group and 9 as common term from second group

$\rightarrow x(x + 11)-9(x+ 11) = 0$

Now take x + 11 as common term,

$\rightarrow (x + 11)(x - 9) = 0$

Equating to zero we get,

x + 11 = 0 or x - 9 = 0

x = -11 or x = 9

When x = -11 :

x + 2 = -11 + 2 = -9

Thus first set of two consecutive odd integers are -11 and -9

When x = 9 :

x + 2 = 9 + 2 = 11

Thus second set of two consecutive odd integers are 9 and 11

5 0

3 years ago

If 15 cans of food are needed for 7 men for 2 days, the number of cans for 4 men for 7 days is

Scorpion4ik [409]

If 15 cans of food are needed for 7 men for 2 days, then 30 cans of food are needed for 4 men for 7 days.

Assuming that the men eat every day, without skipping a day, then the first part of the sentence is basically saying 15 cans can feed 14 men. There are seven men who can survive off part of the 15 cans on day one, and seven men who can survive off of what's left of the 15 cans on day two. The 15 cans have the potential to feed 14 men in one day basically. Applying this same theory, x number of cans has the potential to feed 28 (that's 4 men for 7 days). If these cans are the same size and are equal in terms of how filling its contents are, then we can set up a proportion.

15/14 = x/28
If 15 cans of food can feed 14 men, then x cans of food can feed 28 men.
Cross Multiply
14x = 420
Divide both sides by 14
x = 30

30 cans of food can feed 4 men for 7 days. Hope this helps!

6 0

3 years ago

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