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gayaneshka [121]
3 years ago
15

The function f is defined by f(x) = 2x^2+5. Find f(3a)

Mathematics
1 answer:
Blababa [14]3 years ago
5 0
Plug in 3a for x,

2(3a)^2 is 18a^2, then add five

Answer: 18a^2 +5
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Convert 4x=1+2y from standard form to slope intercept form
gregori [183]

Answer:

3x=2y

Step-by-step explanation:

subtract on from each side 4x-1=1-1+2y=3x+2y

7 0
4 years ago
Find the distance between the pair of points. give an exact answer, and, where appropiate, and apporximation to two decimal plac
atroni [7]
  • Distance Formula: \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}
  • Product rule of radicals: √ab = √a x √b

Using our two points, we can solve for the distance as such:

\sqrt{(4-(-6))^2+(3-(-1))^2}\\ \sqrt{(10)^2+(4)^2}\\ \sqrt{100+16}\\ \sqrt{116}

Now our exact answer may be √116, however using the product rule of radicals we can further simplify the radical as such:

√116 = √4 x √29 = 2√29.

  • Exact Answer: <u>√116 or 2√29</u>
  • Approximate Answer: <u>10.77</u>
8 0
3 years ago
2.) The distance between the entrance of a park and a waterfall on the graph is 4 1/2 inches. Use the scale to
Tresset [83]

Answer:

Step-by-step explanation:

if 3 inches is ................................................2.5 miles

  4.5 inches.................................................? miles

=4.5*2.5/3=3.75 miles

choice C

4 0
3 years ago
In a logistic regression model, the predictor _________
Sonbull [250]

Answer:

B. must undergo a logarithmic transformation before undergoing logistic regression.

Step-by-step explanation:

A logistic regression model allows us to establish a relationship between a binary outcome variable and a group of predictor variables. It models the logit-transformed probability as a linear relationship with the predictor variables.

5 0
3 years ago
HELP
Yakvenalex [24]

Answer:

5. 50.3 m²

6. 113.1 cm²

7. 102.1 yards²

8.  50.3 yards²

9.  452.2 ft²

10.379.8 ft²

Step-by-step explanation:

Area of  a circle = nr²

The circumference of a circle = 2nr

n = pi = 22/7

r = radius

the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.

A radius is half of the diameter

radius = diameter / 2

5. (22/7) x 4² = 50.3 m²

6.  (22/7) x 6² =113.1 cm²

7. radius = 11.4/2 = 5.7 yards

(22/7) x 5.7² =102.1 yards²

8. radius = 8/2 = 4 yards

(22/7) x 4² = 50.3 yards²

9. 2nr = 75.4 yards

2 x (22/7) x r = 75.4

to find r, divide both sides of the equation by 2 and 7/22

r = 12 ft

Area =  (22/7) x 12² = 452.2 ft²

10. 2nr = 69.1 yards

2 x (22/7) x r = 69.1

to find r, divide both sides of the equation by 2 and 7/22

r = 10.99 ft²

Area = (22/7) x 10.99² = 379.8 ft²

the tenth is the first number after the decimal place. To convert to the nearest tenth, look at the number after the tenth (the hundredth). If the number is greater or equal to 5, add 1 to the tenth figure. If this is not the case, add zero

8 0
3 years ago
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