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3 years ago

The product of 7 and a number, increased by 3, is equal to twice the number, subtracted from 39.

1 answer:

7 0

Let the number be X. Then we find
7X + 3 = 39 - 2X

Now we collect the terms and find
9X = 36

Finally we divide by 9
X = 4

So our answer is 4

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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,

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

8 0

3 years ago

Denise is checking to determine if the expressions x+x+6 and 4+3x-2 are equivalent. When x=4, she correctly found that both expr

gayaneshka [121]

The answer would be 8 when the value of x = 2

3 0

4 years ago

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Write 243 as a power of 3

Vlad [161]

Um... Maybe it's 6^3+3^3

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3 years ago

She leaves a 20% tip of 1.80 what is the price of mira’s breakfast before the tip.

Scilla [17]

Answer:

Step-by-step explanation:

The breakfast before tip costs x.

The tip is 20% of x.

The tip is $1.80.

20% × x = 1.80

0.2x = 1.8

x = 1.8/0.2

x = 9

Answer: $9

7 0

3 years ago

Pls help quick………… Math

AVprozaik [17]

C is the answer I got it right

8 0

3 years ago

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