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2 years ago

Help I’m doing a test.... what is 3(2x-9) =

Mathematics

2 answers:

schepotkina [342]2 years ago

7 0

Answer:

6x - 27

Step-by-step explanation:

eimsori [14]2 years ago

5 0

Answer:

6x - 27

Step-by-step explanation:

3 x 2x - 3 x 9 =

6x - 27

Hope that helps!

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If the quotient of 18 3/5 is increased by 10 whats the solution?

andrew-mc [135]

40 i belive but im not sure

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2 years ago

Use the quadratic formula to solve the equation <br> 25x^2-30x+25=0

Reika [66]

Answer: $x=\frac{3}{5}+i\frac{4}{5},\:x=\frac{3}{5}-i\frac{4}{5}$

Step-by-step explanation:

$25x^2-30x+25=0$

$x_{1,\:2}=\frac{-\left(-30\right)\pm \sqrt{\left(-30\right)^2-4\cdot \:25\cdot \:25}}{2\cdot \:25}$

$\sqrt{\left(-30\right)^2-4\cdot \:25\cdot \:25}$

$=\sqrt{30^2-4\cdot \:25\cdot \:25}$

$=\sqrt{30^2-2500}$

$=i\sqrt{2500-30^2}$

$=40i$

$x_{1,\:2}=\frac{-\left(-30\right)\pm \:40i}{2\cdot \:25}$

$x_1=\frac{-\left(-30\right)+40i}{2\cdot \:25},\:x_2=\frac{-\left(-30\right)-40i}{2\cdot \:25}$

$x=\frac{3}{5}+i\frac{4}{5},\:x=\frac{3}{5}-i\frac{4}{5}$

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2 years ago

How does the graph with a quadratic function with an x^2 term differ from the graph of the quadratic function with a y^2 term?

kupik [55]

The graph of a quadratic function y = ax² is a VERTICAL parabola open upward or downward depending whether a (the coefficient of x) is positive or negative

The graph y² = ax or y = √ax is a HORIZONTAL parabola open to the right or to the left depending whether a (the coefficient of x) is positive or negative

4 0

2 years ago

Read 2 more answers

I need Help Please, I will give brainliest!

spin [16.1K]

Answer: You do I-ready welp I can help you

Step-by-step explanation:

I think it is 1 whole

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2 years ago

Find the multiplicative inverse of -2 in mod 7<br>

Elis [28]

Answer:

So something mod 7 is -2
Lets consider what mod does as a commands: If you have 7 and then mod it by 2 ie 7%2 you get 1
Essentially mod is seeing how many times a # goes into the other number and finding the remainder.
In this case we want the remainder of 2: -8%3 =-2
note there is also a mathematical procedural way to solve this.
Rate positively and give brainlist

6 0

2 years ago