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3 years ago

Solve. 50 + -20 - 6x x represents 7.

Mathematics

1 answer:

tiny-mole [99]3 years ago

8 0

Answer:

-12

Step-by-step explanation:

50 + -20 - 6x

First combine like terms

30 -6x

Then let x=7

30 -6(7)

30 -42

-12

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4.13 rounded to one decimal point

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The answer is 4.1
If the number is below 5, you round down, if it's 5 or above, you round up.

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3 years ago

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Martha has saved 2,700 to share with her family . She divides one -third of her saving equally between her two children , lola a

VikaD [51]

Answer:

150

Step-by-step explanation:

one third of 2700 = 900

900/2 = 450

450/3 = 150

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2 years ago

solve quadratic by taking square roots. as=a,-a where a and -a the values you found when when solving. Round to nearest tenth. 2

attashe74 [19]

Answer:

8.1

Step-by-step explanation:

2x^2 -9 = 121

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2 years ago

Suppose that the functions s and t are defined for all real numbers x as follows.

jeka94

Answer:

$(s.t)(x) = 4x^2+24x^2\\(s-t)(x) = x+6-4x^2\\(s+t)(-3) = 39$

Step-by-step explanation:

Given functions are:

$s(x)= x+6\\t(x)= 4x^2$

We have to find:

(s.t)(x) => this means we have to multiply the two functions to get the result.

So,

$(s.t)(x) = s(x)*t(x)\\= (x+6)(4x^2)\\=4x^2.x+4x^2.6\\=4x^3+24x^2$

Also we have to find

(s-t)(x) => we have to subtract function t from function s

$(s-t)(x) = s(x) - t(x)\\= (x+6) - (4x^2)\\=x+6-4x^2$

Also we have to find,

(s+t)(-3) => first we have to find sum of both functions and then put -3 in place of x

$(s+t)(x) = s(x)+t(x)\\= x+6+4x^2$

Putting x = -3

$= -3+6+4(-3)^2\\=-3+6+4(9)\\=3+36\\=39$

Hence,

$(s.t)(x) = 4x^2+24x^2\\(s-t)(x) = x+6-4x^2\\(s+t)(-3) = 39$

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2 years ago

The library has 65400 art books and 9600 science books. What part of all the books are science books

suter [353]

Answer:

9,600/75,000, 16/125

Step-by-step explanation:

art+science=75000

75000 =16/125

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3 years ago

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