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2 years ago

Help me please 2 minutes for class to start

Mathematics

1 answer:

aleksandr82 [10.1K]2 years ago

6 0

From c=b-5

Independent variable is b, the number of cookies in the jar before your visit

Dependent variable is c, the number of cookies remaining in jar

Any questions please just ask. Thanks!

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3x-5y= -25<br> Solve for x

UkoKoshka [18]

Your answer will x= 5y/3-25/3

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3 years ago

On an icy day, Sarah dropped her cell phone on the road near the top of a hill. The phone slid down the slippery street with an

Fittoniya [83]

Answer:

no, it was 0.55

Step-by-step explanation:

do 6.5x85 and then make all the numbers a decimal, which is 0.5525

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3 years ago

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31.8÷3<br>I know that 31.8÷3 equal 10.6 but why

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Answer: The answer’s in the picture

Step-by-step explanation:

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2 years ago

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A coordinate grid is placed over a map. City A is located at (- 3, 2) , and City B is located at (4, 8) . If City C is at the mi

Andreyy89

Answer:

City A is the closest

Step-by-step explanation:

Given

City A = (-3,2)

City B = (4,8)

First, we calculate the coordinates of City C

If City C is located at the midpoint between A and B, then it's coordinates is

(x1 + x2)/2 , (y1 + y2)/2

where

x1 = x coordinate of City A = -3

x2 = x coordinate of City B = 4

y1 = y coordinate of City A = -2

y2 = y coordinate of City B = 8

So, the coordinates of City C = (-3+4)/2 , (-2+8)/2

City C = (½,6/2)

City C = (½,3)

We then calculate the distance between City C and City A

And

We also calculate the distance between City C and City B

Then we compare both results

Formulation for distance = √(x2-x1)² + (y2-y1)²

For City C and City A

City A coordinatates = (x1,y1) = (-3,2)

City C coordinates = (x2,y2) = (½,3)

Distance between A and C = √(½-(-3))² + (3-2)² -------- Simplify the bracket

Distance = √(½+3)² + (1)² ---------- Solve the fraction

Distance = √(7/2)² + (1)² ------------ Open all brackets

Distance = √49/4 + 1

Distance = √53/4

Distance = 7.280109889280518/2

Distance = 3.640054944640259

Distance between City A and C = 3.64 (approximated)

For City C and City B

City B coordinatates = (x1,y1) = (4,8)

City C coordinates = (x2,y2) = (½,3)

Distance between B and C = √(½-(-3))² + (8-4)² -------- Simplify the bracket

Distance = √(½+3)² + (4)² ---------- Solve the fraction

Distance = √(7/2)² + (4)² ------------ Open all brackets

Distance = √49/4 + 16

Distance = √113/4

Distance = 10.63014581273464/2

Distance = 5.315072906367324

Distance between City B and C = 5.32 (approximated)

Comparing the results (3.64) and (5.32),

We conclude that City C is closer to City A than City B

7 0

2 years ago

In circle A shown, BC || DE , mBC=58° and mDE=142°. Determine the measure of ZCFE . Show how you arrived at your answer.

AysviL [449]

Answer:

< CFE = 40°

Step-by-step explanation:

To better understand the solution, see attachment for the diagram.

Given:

BC parallel to DE

Measure of Arc BD = 58°

Measure of Arc DE = 142°

First step: Draw a diameter that passes through the centre of the circle and name it. In this case, the diameter is line ST.

The line ST divides the arc BD and arc DE into half.

That is:

Arc SC = 1/2(arc BC) =1/2(58)

Arc SC = 29°

Arc TE = 1/2(arc DE) =1/2(142)

Arc TE = 71°

Arc SC + Arc CE + Arc TE = 180° (Sum of angles in a semicircle

29° + Arc CE + 71° = 180°

Arc CE + 100° = 180°

Arc CE = 180-100

Arc CE = 80°

Inscribed angle = 1/2(intercepted angle)

<CFE = 1/2(Arc CE )

<CFE = 1/2(80)

< CFE = 40°

5 0

2 years ago