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julsineya [31]
4 years ago
8

Choose all that create a triangle.

Mathematics
1 answer:
iren [92.7K]4 years ago
7 0
The trick is that all angles must add up to 180°!

Triangle
No
Triangle
Triangle
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1. Edgar measures the temperature of a solution at the beginning of an experiment to be 23°F . He monitors the
PIT_PIT [208]

The average change in temperature in each minute would be A) -1.1ºF and B) -1.7ºF.

To A) write an expression that represents the average change in temperature each minute, and B) if Edgar repeats the experiment and finds the average change in temperature each minute is 1 ° F greater in the second trial than in the first trial, to determine what is the average change in temperature each minute in the second trial of the experiment, the following calculations must be performed:

A)

(-2 x 4 + -3 x 3 + 6) / 10 = X

(-8 + -9 + 6) / 10 = X

-11 / 10 = X

-1.1 = X

B)

(-3 x 4 + -4 x 3 + 7) / 10 = X

(-12 + -12 + 7) / 10 = X

-17/10 = X

-1.7 = X

Therefore, the average change in temperature in each minute would be A) -1.1ºF and B) -1.7ºF.

Learn more about averages in brainly.com/question/25818763

5 0
3 years ago
Richard Saltwood’s car averages 620 miles on its 20-gallon tank of gas. If Richard runs out of gas and a mechanic comes to his r
grandymaker [24]
Well first you have to divide 620/20 which is 31. So his car goes 31 miles per gallon so you have 2 gallons and .25 of a gallon. So first off 2*31=62 miles then the 1/4 or .25. Multiply the 31 by .25 which is 7.75 now add 62 and 7.75 and you get how far his car can go. 

62+7.75=69.75 miles
7 0
4 years ago
Find the value of the polynomial 3x<br> 3 – 4x<br> 2+ 7x + 5, when x = 3 and also when<br> x = –3.
babymother [125]

Answer:

71

-133

Step-by-step explanation:

Given the polynomial :

3x³– 4x² + 7x + 5, when x = 3 and also when

x = –3.

Put x = 3

3(3)³– 4(3)² + 7(3) + 5

3(27) - 4(9) + 21 + 5

81 - 36 + 21 + 5

= 71

Put x = - 3

3(-3)³– 4(-3)² + 7(-3) + 5

3(-27) - 4(9) - 21 + 5

-81 - 36 - 21 + 5

= - 133

4 0
3 years ago
Help pleaseeeeeeeeeeeeeeeeeeee
Jlenok [28]

Answer:

3.55 x t = 28.40 or 28.40/t = 3.55

Step-by-step explanation:

8 0
3 years ago
Fill in the missing statements and reasons in this proof. Number your reasons 1 through 5 as they would be shown in the chart be
Paul [167]

From the given condition m ∠LOM = m ∠JKI, m ∠MON = m ∠IKH it is proved that m ∠LON = m ∠HKJ as they are congruent angles.

<h3>What are congruent angles?</h3>

Congruent angles are defined as angles with equal measure. According to the question,

m ∠LOM = m ∠JKI  (given congruent angles)   _____(1)

m ∠MON = m ∠IKH  (given congruent angles)  _______(2)

Add both the side angle  m ∠MON in (1) we get m ∠LOM + m ∠MON = m ∠JKI + m ∠MON

Replace angle  m ∠MON = m ∠IKH from (2)  on right-hand side we get,

m ∠LOM + m ∠MON = m ∠JKI + m ∠IKH  ____(3)

m ∠LOM + m ∠MON = m ∠LON  ( M is the interior point of ∠LON)  ___(4)

m ∠JKI + m ∠IKH = m ∠HKJ  ( I is the interior point of ∠HKJ)  ___(5)

Form (3), (4), and (5) we get, m ∠LON = m ∠HKJ  (Congruent angles)

Hence, from the given condition it is proved that m ∠LON = m ∠HKJ, are congruent angles.

Learn more about congruent angles on:

brainly.com/question/24887947

#SPJ1

5 0
2 years ago
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