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Mekhanik [1.2K]
3 years ago
10

Which expression has the greatest value when x = 3 223 2x3 +5 (2x) (x - 1)3

Mathematics
1 answer:
Olenka [21]3 years ago
4 0

Answer:

2x {}^{2}  + 5

You might be interested in
Given the following matrices, what 3 elements make up the first column of the product matrix DA?
Misha Larkins [42]

We have to figure out what the product of DA is,

\begin{bmatrix}-1&2&3\\8&-4&0\\6&7&1\\ \end{bmatrix}\begin{bmatrix}1\\3\\5\\ \end{bmatrix}=\begin{bmatrix}a\\b\\c\\ \end{bmatrix}

We know that,

\begin{bmatrix}a&b&c\\d&e&f\\g&h&i\\\end{bmatrix}\begin{bmatrix}x\\y\\z\\\end{bmatrix}=\begin{bmatrix}ax+by+cz\\dx+ey+fz\\gx+hy+iz\\\end{bmatrix}

So,

a=-1\cdot1+2\cdot3+3\cdot5=-1+6+15=20

b=8\cdot1+(-4)\cdot3+0\cdot5=8-12=-4

c=6\cdot1+7\cdot3+1\cdot5=6+21+5=32

So the solution is,

a,b,c=\boxed{20,-4,32}

Hope this helps :)

4 0
3 years ago
What is the slope of the line passing through the points (6, 7) and (1, 5) ?
rodikova [14]

2/5 as

5 - 7/1 - 6 = -2/-5. Dividing a negative number by a negative gives you a positive so 2/5.

6 0
4 years ago
Read 2 more answers
Please help. What do I do
Marina86 [1]

1. let x = a number

x^2+5

2. let x = a number

2x-(x+19)

3. let x = a number

2x=1/3x + 9

4. let x = 1st integer

x+1 = 2nd integer

x+2 = 3rd integer

(x+x+1+x+2)/4

=(3x+3)/4

5. let x=smallest integer

x+1 = 2nd integer

x+2 = 3rd integer

x+3 = largest integer

x+x+1+x+2+x+3 = 9(x+3)

= 4x+6= 9x+27

6 0
3 years ago
Use the given degree of confidence and sample data to construct a confidence interval for the population mean μ. Assume that the
NeTakaya

Answer:

CI ≈ (173.8 < μ < 196.2)

Step-by-step explanation:

We are told that laboratory tested twelve chicken eggs. Thus;

n = 12

Mean; x¯ = 185 mg

S.D; s = 17.6 mg

DF = n - 1 = 12 - 1 = 11

We have a 95% confidence level. Thus; α = 0.05

Since n < 30, we will use t-sample test.

Thus, from t-table attached at 95% Confidence level and DF = 11, we have;

t = 2.201

Thus,formula for Confidence interval is;

CI = (x¯ - t(s/√n)) < μ < (x¯ + t(s/√n))

CI = (185 - 2.201(17.6/√12)) < μ < (185 + 2.201(17.6/√12))

CI = (185 - 11.1825) < μ < (185 + 11.1825)

CI = (173.8175 < μ < 196.1825)

CI ≈ (173.8 < μ < 196.2)

7 0
4 years ago
141=-v-8(-8v+6) please help me!
timurjin [86]

Answer:

v=3

Step-by-step explanation:

141=-v-8(-8v+6)

distribute -8 into the parentheses

141=-v+ 64v-48

simplify by putting v's together

141=63v-48

add 48 to both sides to get x by itself  

189=63v

divide both sides to isolate x

v=3

3 0
4 years ago
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