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Scrat [10]
2 years ago
6

Please help with question 13!! BRAINLIEST to correct answer!!!

Mathematics
1 answer:
kogti [31]2 years ago
5 0

Answer:

true

Step-by-step explanation:

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If f(x)= 3x^2+1 and g(x)= 1-x, what is the value of (f-g)(2)?
enyata [817]

Answer:

14

Step-by-step explanation:

note that (f - g) = f(x) - g(x)

f(x) - g(x) = 3x² + 1 - (1 - x) = 3x² + 1 - 1 + x = 3x² + x

To evaluate (f - g)(2) substitute x = 2 into f(x) - g(x)

(f - g)(2) = 3(2)² + 2 = (3 × 4) + 2 = 12 + 2 = 14

3 0
3 years ago
Which expression is equivalent to 5x+5y
Rasek [7]

Answer:

5(x + y)

Step-by-step explanation:

8 0
2 years ago
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Which of the following pairs are not equivalent statements?
lesya692 [45]

Answer:

sorry but what is this I don't understand?

4 0
3 years ago
What is the surface area of this figure?
disa [49]

Answer:

72 sq. mi

Step-by-step explanation:

Breaking this down, we have 2 right triangles with sides of 3, 4, and 5 miles, and 3 rectangles with dimensions 3 x 5, 4 x 5, and 5 x 5 miles. Remember that the area of a triangle is 1/2 x b x h , where b and h are the triangle's base and height. The base and height of the triangles at the bases of the figure are 3 and 4, so each triangle has an area of 1/2 x 3 x 4 = 1/2 x 12 = 6 sq. mi, or 6 + 6 = 12 sq. mi together.

Onto the rectangles, we can find their area by multiplying their length by their width. Since the width of these rectangles is the same for all three - 5 mi - we can make our lives a little easier and just "glue" the lengths together, giving us a longer rectangle with a length of 3 + 4 + 5 = 12 mi. Multiplying the two, we find the area of the rectangles to be 5 x 12 = 60 sq. mi.

Adding this area to the triangle's area gives us a total area of 12 + 60 = 72 sq. mi.

7 0
3 years ago
Read 2 more answers
HELP HELP ILL GIVE BRAINLIEST PLS HELP ME
PolarNik [594]
50 km/h = 4 hours
60 km/h = x hours

50x = 60×4

50x = 240

x = 4.8 hours
6 0
2 years ago
Read 2 more answers
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