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3 years ago

What does the expression 3x+4y equal

1 answer:

7 0

That expression can’t be simplified and the answer is unknown. Finding what 3x+4y is impossible unless more information is provided.

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Find the real and/or imaginary solutions by factoring

Leya [2.2K]

Here is number 7:
${x}^{2} - 11x = - 24 \\ {x}^{2} - 11x + 24 = 0 \\ (x - 3)(x - 8) = 0 \\ x = 3 \: and \: 8$
Here is number 8:

$3 {x}^{3} + 3 {x}^{2} = 27x \\ 3 {x}^{3} + 3 {x}^{2} - 27x = 0 \\ 3x( {x }^{2} + x - 9) = 0 \\ x = 0 \: and \: two \: more \: solutions \: shown \: below.$
Use the quadratic formula to find the other two solutions:

$x = \frac{ - 1 + - \sqrt{ {1}^{2} - 4(1)( - 9) } }{2(1)} \\ x = \frac{ - 1 + \sqrt{37} }{2} \\ x = \frac{ - 1 - \sqrt{37} }{2}$

4 0

3 years ago

What is the value of 12⁰?

MatroZZZ [7]

Heyo! ;D

So, I think I may of heard about this topic in the past...are you working with degrees of circles? Plane angles? If so, you can use this formula to find your answer:

12° × $\pi$ ÷ 180 = <u>0.2094(rad)</u>

I'm not entirely sure, however I hope this somewhat helped! If so, please lmk! Tysm and good luck!

8 0

3 years ago

Read 2 more answers

PLEASE HELP!! THANKS!<br><br> What is the 4th term in the sequence?

Anit [1.1K]

Answer:

b(4) = -405

Step-by-step explanation:

The first term of the sequence has been represented by 15.

The common ratio is -3

Since the first term is 15 you would have to multiply by -3 to find the next three terms.

B(1) = 15

B(2) = -45

B(3) = 135

B(4) = -405

The fourth term is -405

Answer:

-405

5 0

3 years ago

a washer and a dryer cost 1020$ combined, the washer costs 70$ more than the dryer. What is the cost of the dryer?

finlep [7]

Answer:

$950

Step-by-step explanation:

x+70=1020 so subtract 70 from both sides

x=950 cost of dryer

1020-950=70 washer is 70 more than dryer

6 0

3 years ago

The sum of two numbers is 48.<br>the second number is seven times the first number

dusya [7]

Answer:

$\huge\boxed{\sf x =6,\ y = 42}$

Step-by-step explanation:

Let the numbers be x and y

<h3>Given condition:</h3>

x + y = 48 --------(1)

y = 7x -------------(2)

Put Eq. (2) in (1)

x + 7x = 48

8x = 48

Divide 8 to both sides

x = 48/8

Put x = 6 in Eq. (2)

y = 7 (6)

$\rule[225]{225}{2}$

6 0

2 years ago

Read 2 more answers