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OverLord2011 [107]
2 years ago
12

If a+b=8 and b-a= -5 then a^2 - b^2=

Mathematics
1 answer:
iren2701 [21]2 years ago
5 0

Answer:

sorry if i am wrong but i think it is 40

Step-by-step explanation:

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A measure of______ for a numerical data set summarizes all of its values with a single number? A) symmetry B)shape C) deviation
rusak2 [61]

Answer:

D) center

Step-by-step explanation:

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8 0
3 years ago
A manufacturing company produces engines for light aircraft . The graph shows the number of engine produced each year since the
photoshop1234 [79]

Answer:

y=13x+32

149 engines in 9th year

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.  

Please have a look at the attached photo.  

My answer:

From a look at the photo and the data plot can be represented by the function, so we can pick 2 points in our given graph

  • (x1, y1) = (2,60)
  • (x2, y2) = (5,99)

The standard form of a linear equation is:

y = mx + b where:

  • m is the slope
  • b is the y-intercept

We know the slope of the function can be found as following:

m = \frac{y2 - y1}{x2 - x1}  so in this situation we have:

<=> m=\frac{99-60}{5-2}=\frac{39}{3}=13

=> y = 13x + b (1)

Because the line goes through point  (2,60) so we substitute it into (1):

60 = 13*2 + b

<=> b = 60 - 26 = 34

=> y = 13x + 34

Now we will substitute x=9 to find the engines produced by company in 9th year as:

y=13(9)+32\\y=117+32=149

Hence, the company will produce 149 engines in 9th year

6 0
3 years ago
8.4y−3.6y=48.96 i need help​
Marta_Voda [28]

Answer:i got 10.2

Step-by-step explanation:

7 0
2 years ago
Hi! Please without looking it up I am doing my writing and speaking test for Spanish and I'm trying to figure out what is "Then"
inysia [295]

Answer:

The sentance you but then would be than which would be Hay más mesas en la cocina que en mi habitación but the word then would be entonces and example sentance is entonces iré allí which is then i will go over there

and than is que, an example sentace en lugar de que yo vaya allí which is rather than me going over there

Step-by-step explanation:

7 0
3 years ago
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Of the following sets, which represents a function? Situation A = {student's name, all the colors that the student likes} Situat
luda_lava [24]

Answer:

Situation A

Step-by-step explanation:

please mark as brainlist answer

8 0
2 years ago
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