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3 years ago

Simplify this expression: 2(5x+4)-3x

Mathematics

2 answers:

Andreas93 [3]3 years ago

5 0

Answer:

Simplification process is described as below:

f(x) = 2*(5x + 4) - 3x

= 10x + 8 - 3x

= 7x + 8

Hope this helps!

V125BC [204]3 years ago

3 0

Answer:

7x+8

Step-by-step explanation:

10x+8-3x = 7x+8

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Find the determinancof the matrix Q.

stepan [7]

Using a Laplace expansion along the first column, we have

$\det Q=2\det\begin{bmatrix}2&1\\-1&6\end{bmatrix}+3\det\begin{bmatrix}3&4\\-1&6\end{bmatrix}+5\det\begin{bmatrix}3&4\\2&1\end{bmatrix}$

The determinant of a 2x2 matrix is trivial,

$\det\begin{bmatrix}a&b\\c&d\end{bmatrix}=ad-bc$

So we have

$\det Q=2\cdot13+3\cdot22+5\cdot(-5)=67$

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4 years ago

Plz help me, brainliest to be given

Leokris [45]

Answer:

Step-by-step explanation:

R=INTEREST X 100% / TIME X PRINCIPAL

r=40 x 100=4000

4000/500 x 2=1000

4000/1000=4%

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3 years ago

Which scatterplot has a correlation coefficient closest to r = 1?

qwelly [4]

Answer:

The scatter diagram that contains the correlation coefficient closest to r = 1 is the first one shown in the attached images.

Step-by-step explanation:

The correlation coefficient "r" measures how much two variables x and y are related. When the variables are highly related, the value of r is closer to one and the points contained in the scatter diagrams are assimilated more and more to a line. When the value of r is positive the relation is crescent and therefore the slope of the line drawn by the points in the diagram has a positive slope

Therefore, to answer this question, one must search among the attached images for the dispersion diagram in which the points resemble a straight line with a positive slope.

The scatter diagram that meets the requirements mentioned is the first one that appears in the attached images

6 0

4 years ago

Read 2 more answers

At your job, you make $8 per hour, and are promised to get a $0.03 per month. Your friend makes $8.15, and is promised a $0.02 r

Rudik [331]

Answer:

3883.2 dollars.

Step-by-step explanation:

We must analyze the situation of each one,

The first tells us to earn 8 dollars an hour, he is promised to receive 0.03 dollars per month, which means that he would already have that increase that month. Therefore, you would have 8.03 per hour of earnings.

The second, on the other hand, although he earns $ 8.15 per hour, the increase is promised every month, that is, it is NO month with the increase of 0.02.

Now assuming they work 8 hours a day and 30 days a month, it would be a total of 8 * 30 = 240 hours.

Now multiplying your hourly income, we will get what each person earns per month.

8.03 * 240 = 1927.2 dollars

8.15 * 240 = 1956 dollars

Which means that both will earn a total of:

1927.2 + 1956 = 3883.2 dollars.

4 0

3 years ago

If f (x) = 3x and g (2) =<br> 3x and g (2x) = 7x – 1, find g (f (5)).

maxonik [38]

Answer:

If it's: Find the value of the constant.

= 5 f

Step-by-step explanation:

8 0

4 years ago