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d1i1m1o1n [39]
3 years ago
9

Directions: for questions 15 through 20, expand each expression.

Mathematics
1 answer:
Svetlanka [38]3 years ago
5 0
15. 6x + 12
16. 12y - 4
17. - 15p - 21
18. 24 - 8x
19. 7 - 42c
20. -20 + 15y
21. 3(x + 4)
22. 5(3 - 2k)
23. 3(3a + 5)
24. - 2(10 + 3b)
25. B) 4(2n - 5)
26. D) 8(3 - 2r)

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Tessa is cooking steak for her family. She wants to be sure the steak has an internal temperature of at least 160 degrees Fahren
Over [174]

Answer:

<u>Population : all the steaks Tessa can cook</u>

<u>Parameter : minimum internal temperature of 160 degrees Fahrenheit</u>

<u>Sample : two random thermometer readings</u>

<u>Statistic : minimum sample reading of 165 degrees Fahrenheit</u>

Step-by-step explanation:

Let's recall the definitions of these statistical concepts and match it with the information that were provided to us:

  • Populations can be the complete set of all similar items that exist, in our case, all the steaks that Tessa can cook.
  • Parameter is is a value that describes a characteristic of an entire population, such as the minimum temperature of the steaks Tessa is cooking in Fahrenheit degrees.
  • Sample is a subset of the population, in our case, the two random readings of the thermometer Tessa did.
  • Statistic is a characteristic of a sample, for our problem, it's the minimum reading of 165 degrees Fahrenheit.
3 0
3 years ago
Pleaseee help me solve this question
weqwewe [10]

Answer:

y=3x

Step-by-step explanation:

3 0
3 years ago
23. Find the perimeter and area of the rectangle below. 10x^2 7xy^2​
coldgirl [10]

Answer:

Area= 70x^3y^2

Perimeter = 20x^2 + 14 xy^2

Step-by-step explanation:

Area is just multiplying the length and width, I multiplied the constants first which gets us 70 then multiplied the variables, they combine however only the x's can be multiplied to each other which results in 70x^3y^2 .  The perimeter you just multiply the length by two and the width by two, they are separate because the variables when added to each other do not combine.  

4 0
3 years ago
Find the equation of a line that passes through the point (3,5) and has a gradient of 2.
Karolina [17]

Answer:

y = 2x - 1

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = 2 , then

y = 2x + c ← is the partial equation

To find c substitute (3, 5) into the partial equation

5 = 6 + c ⇒ c = 5 - 6 = - 1

y = 2x - 1 ← equation of line

7 0
3 years ago
Find the indicated values, where <img src="https://tex.z-dn.net/?f=g%28t%29%3D%20t%5E2%20-t%20and%20f%28t%29%3D1%2Bx" id="TexFor
notka56 [123]
The indicted answer is f(2g(1)) = 1
4 0
3 years ago
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