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Salsk061 [2.6K]
3 years ago
13

Systems of equations 5x+y=7 20x+2=y

Mathematics
1 answer:
saveliy_v [14]3 years ago
7 0

Step-by-step explanation:

5x+y=7

20x+2=y

put y value in first equation

5x+(20x+2)=7

25x=5

x=5

now put x value to determine y

as we know 20x+2=y

20(5)+2=y

y=102

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At Fabco, there are 156 boots, which make up 26% of the shoes in the store. At Famous Footwear, there are 130 boots, which make
PtichkaEL [24]

Answer:

Famous Footwear has the most sheos.

Step-by-step explanation:

156/26=6=1%

6x100=600

At Fabco there are 600 sheos

130/13=10=1%

10x100=1000

At Famous Footwear there are 1000 sheos

7 0
3 years ago
Which is not a likely area of application of statistics in business?
Roman55 [17]

Answer:

D.

Step-by-step explanation:

Statistics has a lot of usage in business.

Using statistics as well as statistical tools helps in the provision of data to be used for business analysis. With available data we can get patterns in a a large database. Statistics can be used for auditing, as in question option b. For option c, statistics can be used for making business forecasts after the careful observation of trends and patterns that are in the data.

Option d does not make use of statistics. It has nothing to do with statistics neither does it have a computational feature.

Therefore, d.) questioning the executive's strategic decision is the answer to this question

4 0
2 years ago
The average value of a function f over the interval [−2,3] is −6 , and the average value of f over the interval [3,5] is 20. Wha
Xelga [282]

Answer:

The average value of f over the interval [-2,5] is \frac{10}{7}.

Step-by-step explanation:

Let suppose that function f is continuous and integrable in the given intervals, by integral definition of average we have that:

\frac{1}{3-(-2)} \int\limits^{3}_{-2} {f(x)} \, dx = -6 (1)

\frac{1}{5-3} \int\limits^{5}_{3} {f(x)} \, dx = 20 (2)

By Fundamental Theorems of Calculus we expand both expressions:

\frac{F(3)-F(-2)}{3-(-2)} = -6

F(3) - F(-2) = -30 (1b)

\frac{F(5)-F(3)}{5-3} = 20

F(5) - F(3) = 40 (2b)

We obtain the average value of f over the interval [-2, 5] by algebraic handling:

F(5) - F(3) +[F(3)-F(-2)] = 40 + (-30)

F(5) - F(-2) = 10

\frac{F(5)-F(-2)}{5-(-2)} = \frac{10}{5-(-2)}

\bar f = \frac{10}{7}

The average value of f over the interval [-2,5] is \frac{10}{7}.

4 0
3 years ago
PLEASE HELP!! Points A, B, and P are collinear on segment AB, and AP: AB = 1/4. A is located at (8,4) and B is located at (4,12)
artcher [175]

Answer:

(7,6)

Step-by-step explanation:

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3 0
3 years ago
If two angles of a triangle are 10 degrees and 20 degrees, then the triangle is ????​
Wewaii [24]

Answer:

Scalene

Step-by-step explanation:

Because all triangular angles add up to 180 degrees.

10+20=30

180-30=150

None of those angles are the same.

5 0
3 years ago
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