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Vlada [557]
2 years ago
9

What is the vertex of the function f(x) = x2 + 12x?

Mathematics
1 answer:
Ne4ueva [31]2 years ago
7 0

Answer:

es la tercera amiga yo pienso

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Add the two expressions.<br><br> −2.4n−3 and −7.8n+2
Sphinxa [80]

Answer:

-10.2n - 1

Step-by-step explanation:

We have two expressions in variable n and we have to add the two expressions.

An important thing to note is that only like terms can be added. i.e. the term with "n" can only be added or subtracted to the term with "n". Similarly a constant can only be added or subtracted to a constant.

(-2.4n-3)+(-7.8n+2)\\=-2.4n-3-7.8n+2\\=-2.4n-7.8n-3+2\\=-10.2n-1

Thus, the two given expressions add up to -10.2n - 1

4 0
3 years ago
Triangle PQR has coordinates P(–8, 3), Q(–8, 6), and R(–3, 6). If the triangle is translated by using the rule (x, y) right-arro
amid [387]

Answer:

Step-by-step explanation: in the x's place add 4 to that number and in the y's place subtract 6 from that number:

P= -4,-3

Q= -4,0

R= 1, 0

3 0
3 years ago
Read 2 more answers
0.00204 written as standard form
joja [24]

Answer:

2.04 x 10^3  or 20.4 x 10^4

Step-by-step explanation:

you can count how many spaces you need to move the decimal. You need to move it 3 spaces to get 2.04 so you put 3 as the exponent to get 10^3

Can you please mark me Brainliest, It would help (✿◠‿◠)

3 0
3 years ago
A student group claims that first-year students at a university must study 2.5 hours (150 minutes) per night during the school w
AlekseyPX

Answer:

We have strong evidence that on average, students study less than 150 minutes per night during the school week

Step-by-step explanation:

Normal distribution:

mean     μ₀ = 150

Sample:

Sample size    n = 272

Sample mean   x = 141

Sample standard deviation  s  = 66

The standard error of the sample mean  SE = σ /√n

SE = 66/√272

SE = 66 / 16,49

SE = 4

Test Hypothesis:

Null hypothesis                            H₀             x  =   μ₀

Alternative hypothesis                Hₐ            x <    μ₀

z(s)  test statistics is:

z(s)  =  ( x  -  μ₀ ) / s/√n

z(s) = - 9 /4

z(s) =  -  2,25

p-value  for that z(s)      p-value  = 0,0122

Then for α =  0,05 p-value < 0,05

We are in the rejection region we need to reject H₀

7 0
3 years ago
What is the slope of the linear line?<br> 4/5<br> 4/-5<br> 5/6<br> 5/-6
kolbaska11 [484]

Answer:

Slope is rise/run

Slope is -4/5

= 4/-5

6 0
2 years ago
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