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Damm [24]
4 years ago
14

Need help with this quickly!! Will award brainliest!!!’n

Mathematics
1 answer:
agasfer [191]4 years ago
8 0

Answer:

1- y= -1.25x+15.5 because you can estimate the y intercept to see that it intercepts at 15.5 and you find the slope by calculating it with the points 2,15 and 6,10.

2- it decreased approximately 1 and a half minutes a day  because the slope is -1.25, or one and a half minutes lost

Step-by-step explanation:

6-2/10-15=-1.25

You might be interested in
5.45 inches long by 9.4 inches wide and 3.9 inches high what is the volume of the stack of paper
galben [10]

Answer:

199.797

Step-by-step explanation:

5.45 x 9.4 x 3.9

8 0
3 years ago
Will mark BRAINLIEST!! — Point H is the circumcenter of triangle DEF. Which must be true? Check ALL that apply. See image.
Margarita [4]

Answer:

A, C, F

Step-by-step explanation:

Definition: The circumcenter is  the center of the triangle's circumcircle - the circle that passes through all three of the triangle's vertices. If point H is the circumcenter of the triangle DEF, then the circumcircle passes through its vertices D, E and F (option A is true).

Option B is false, the circumcircle doesn't pass through the points L, M and N. This option is true for inscribed circle, not for circumcircle.

Option C is true, because HD and HE are the radii of the circumcircle.

Option D is false. This option is true for inscribed circle, not for circumcircle.

Option E is false. This option is true for inscribed circle, not for circumcircle.

Option F is true, because both these angles are right angles.

8 0
3 years ago
A cylindrical pail that has the base area of 9 pi inches squared and a height of 10 inches. One friend bought a pyramid mold wit
FromTheMoon [43]

Answer:

  • cylinder — 90π in³
  • pyramid — 37 1/3 in³
  • cone — 12.5π in³

Step-by-step explanation:

The volume of a cylinder is given by ...

  V = Bh . . . . . where B is the base area and h is the height

The volume of a pyramid or cone is given by ...

  V = (1/3)Bh . . . . . where B is the base area and h is the height

The area of a square of side length s is ...

  A = s²

The area of a circle of radius r is ...

  A = πr²

___

Using these formulas, the volumes of these objects are ...

  cylinder: (9π in²)(10 in) = 90π in³

  square pyramid: (1/3)(4 in)²(7 in) = 37 1/3 in³

  cone: (1/3)(π(2.5 in)²)(6 in) = 12.5π in³ . . . . slightly larger than the pyramid

3 0
4 years ago
F(j) = 6j + 5. Find f(⅓)
galben [10]

Answer:

f(j) = 6j + 5 if f(1/3)

f(j) = 6(1/3) + 5

f(j) = 2 + 5

f(j) = 7

Step-by-step explanation:

  1. replace j by 1/3
  2. distribute 6(1/3)
  3. do addition

4 0
4 years ago
A triangle has one 40 degree angle, one unknown angle, and one angle that is 4
Andru [333]

Answer:

36°

Hint: 4*unknown + 36 = 180°

7 0
3 years ago
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