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Blababa [14]
2 years ago
12

Quickly plz 9th grade math ​

Mathematics
2 answers:
kozerog [31]2 years ago
4 0

Answer:

The answer is -8.7

Step-by-step explanation:

-5(-2.1) + 4(-4.8)

10.5 + 4(-4.8)

10.5 + (-19.2) =  -8.7

Rainbow [258]2 years ago
3 0
Im pretty sure its -8.7
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Which graph could potentially have a correlation coeffiecient (r value) of 0.95?
Masteriza [31]

Answer:

C,

Step-by-step explanation:

A and D is incorrect because they are negative correlation

and B is incorrect because a correction of 0.95 means all values are close to each other, but B values are scattered much more that C values

so answer C

3 0
2 years ago
The vertices of a triangle are A(2,5), B(1, 2), and C(3, 1). Find the coordinates of the image after a dilation with respect
Dmitry_Shevchenko [17]

The coordinates of the image after a dilation with respect to the origin is A'' (2,10), B" (0,4), C" (4,2) .

<h3>How does dilation work?</h3>

Dilation of a figure will leave its sides get scaled (multiplied) by same number. That number is called the scale factor of that dilation.

Its also called scaling of a figure, but due to the involvement of coordinates, it involves a center of a dilation, which is like a pinned point that stays at the same place after dilation.

Its like we enlarge or shorten the size of the figure (or keep it same, when scale factor = 1).

The vertices of a triangle are A(2,5), B(1, 2), and C(3, 1).

A' = 2(2.5) = (4,10)

B' = 2(1,2) = (2,4)

C' = 2(3,1) = (6,2)

Translation of 2 units left means change in x

A'' = (4-2,10) = (2,10)

B" = (2-2,4) = (0,4)

C" = (6-2,2) = (4,2)

Translation of 1 units up means change in y

Learn more about vertices ;

brainly.com/question/27886655

#SPJ1

7 0
2 years ago
Just make sure to help me out when I need it. Thx!
Mnenie [13.5K]

Answer:

okay i will

Step-by-step explanation:

5 0
3 years ago
The double box plot shows the test scores for Miss Robinson's second and fourth period
Afina-wow [57]

Answer: The second period class has the greater first quartile.

4 0
3 years ago
Which expresses 2.7 billion in scientific notation
liraira [26]
Answer: A 2.7 x 10^9

Explanation: brain go brrrrr
8 0
3 years ago
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