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weeeeeb [17]
4 years ago
11

What is the sum of the expression below? (9c-8d)+(2c-6)+(-d+3)

Mathematics
2 answers:
Dmitrij [34]4 years ago
7 0

Answer: The answer  would be 11c-9d-3

Hope this helped

:D

777dan777 [17]4 years ago
5 0

Answer:

The answer is 10c-9d-3

Step-by-step explanation:

9c - 8d + 2c - 6 - d + 3

= 11c - 9d - 3

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On a certain day, the exchange rate was 60 U.S. dollars for 50 euro. How many U.S. dollars were 70 euro worth that day? Show tha
kvasek [131]
The exchange rate is 60:50 (us:euro)

if you have 70 euros, then x:70

60(x) : 70(50)

60x /60 : 3500/60

x = 58.33

seventy euro dollars = $ 58.33 on that particular day


hope this helps
3 0
3 years ago
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Carmen was scuba diving 115 feet below the surface of the ocean. She swam up 20 feet to
Lapatulllka [165]

Answer:

-115+20= -95 so, carmen is scuba diving 95 feet<u> below surface level</u>

Step-by-step explanation:

<u>below surface level </u> means negative

8 0
3 years ago
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If the point (8,4) is on the graph of an even function ,what other point must also be on the graph ?
polet [3.4K]

A function is "even" when:

f(x) = f(−x) for all x,

Even functions are  symmetry about the y-axis .In other words the point is a reflection about the y axis.

The given point is (8,4) .When a point is reflected along y axis the x changes its value so the point become (-8,4)

4 0
4 years ago
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An economist at Vanderbilt University devised a study to compare different types of online auctions. In one experiment he compar
Serjik [45]

Answer:

Step-by-step explanation:

a. The data should be analyzed using paired samples because the economist made two measurements (samples) drawn from the same pair of identical cards. Each data point in one sample is uniquely paired to a data point in the second sample.

b. A pair is made up of two identical cards where one would go into Dutch auction and the other to the first-price sealed bid auction.

c. The explanatory variables are the types of online auction which are the Dutch auction and the first price sealed bid auction. The explanation variable here is categorical: the Dutch auction and the first price sealed bid auction.

d. The response variable which is also known as the outcome variable is prices for the 2 different auction for each pair of identical cards. This variable is quantitative.

e. Null Hypothesis in words: There is no difference in the prices obtained in the two different online auction.

Alternative hypothesis: There is a difference in the prices obtained in the two different online auction.

f. The parameter of interest in this case is the mean prices of pairs of identical cards for both auction and is assigned p.

g. Null hypothesis: p(dutch) = p(first-price sealed auction)

Alternative hypothesis: p(dutch) =/ p(first-price sealed auction)

h. Assuming the p-value is 0.17 at an assed standard 0.05 significance level, our conclusion would be to fail to reject the null hypothesis as 0.17 is greater than 0.05 or even 0.01 and we can conclude that, there is no statistically significant evidence to prove that there is a difference in the prices obtained in the two different online auction.

8 0
4 years ago
Can someone please help me with this !! ❤️
Elan Coil [88]

Answer:

(x, y) → (x + 6, y + 13)

Step-by-step explanation:

<u>Let's use one of the points to determine the transition:</u>

  • Coordinates of D = (-5, -7)
  • Coordinates of D' = (1, 6)

<u>Transition:</u>

  • x' - x = 1 - (-5) = 6
  • y' - y = 6 - (-7) = 13

<u>So the rule is:</u>

  • (x, y) → (x + 6, y + 13)
4 0
4 years ago
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