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noname [10]
3 years ago
10

7. x, when n(x) = -2

Mathematics
1 answer:
grandymaker [24]3 years ago
6 0

Answer:

please send full question

Step-by-step explanation:

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Is 3x^2 + 2x + 10 = 0 written in standard form?
Nataly_w [17]

Answer:

in the US, yes

in some other English-speaking countries, no

Step-by-step explanation:

"Standard form" depends on where you live. In the UK, the "standard form" of a quadratic equation is what is called "vertex form" in the US. That form is ...

3(x +1/3)^2 +29/3 = 0

In the US, the equation you show is in standard form.

8 0
3 years ago
A coffee maker priced at $189.99 is on sale for 20% off but then sales tax of 9% and 8% are added to the price after discount. W
11Alexandr11 [23.1K]

Answer:

20%+9%+8%=37% so 189.99*37/100=70.3$ so 189.99-70.3=119.7$

4 0
3 years ago
Write the base-ten number for 400 + 50+ 1.​
TiliK225 [7]

Answer:

451

Step-by-step explanation:

8 0
3 years ago
Please please helpppp.
padilas [110]

There are 3 ways of solving a simultaneous problem, substitution method, elimination method and Gauss-Jordan method. I'm gonna use the substitution method since it's easier and i think it would suit your level more.

First let's try solving for y since it's easier to start with.

Firstly we have to find an equation for x:

x-2y=2\\x-2y+2y=2+2y\\x=2+2y

Great, now we can use the substitution method to find the value of y using the first equation:

2x+3y=11\\2(2+2y)+3y=11\\4+4y+3y=11\\7y=7\\y=1

Now we know that y=1 we can solve the first equation we made:

x=2+2y\\x=2+2(1)\\x=4

And the answer is x=4 , y= 1\\(4,1)

Double check:

2x+3y=11\\2(4)+3(1)=11\\8+3=11\\11=11\\\\x-2y=2\\(4)-2(1)=2\\2=2

And that's our final answer! (4,1)

7 0
3 years ago
Given m||n, find the value of x.<br> t<br> (7X+7)<br> (2x+2)
arsen [322]

Answer:

x=1+4/5 this is the answer i think

7 0
2 years ago
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