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2 years ago

Please help me I have no idea what I am doing so could u please help me with this it’s from Khan academy

Mathematics

2 answers:

Elena L [17]2 years ago

4 0

Answer:

The answer is switch direction

Step-by-step explanation:

since the arrow is pointing to the left: <--------

and you don't change the symbol, because when it is greater than or equal to or less than or equal to, it's always a closed circle

Natasha2012 [34]2 years ago

3 0

Answer:

k12

Step-by-step explanation:

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Hi, I dont understand this. can anyone explain how to solve it ASAP?

ZanzabumX [31]

Answer:

x=4, y=-3. (4, -3).

Step-by-step explanation:

5x+4y=8

2x-3y=17

--------------

2(5x+4y)=2(8)

-5(2x-3y)=-5(17)

---------------------

10x+8y=16

-10x+15y=-85

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23y=-69

y=-69/23

y=-3

5x+4(-3)=8

5x-12=8

5x=8+12

5x=20

x=20/5

x=4

4 0

3 years ago

How many solutions will there be to the following equation? 16 x squared = 100 a. more than 2 solutions b. no solution c. 1 solu

blagie [28]

Answer:

The answer is B. No solution

Step-by-step explanation:

16x^2 is not equal to 100, so the equation is false, and there is no solution for x.

4 0

2 years ago

What is the equation of the line that passes through (0, -2) and has a slope of 0?

serious [3.7K]

Answer:

y = - 2

Step-by-step explanation:

A line with a slope of 0 is a horizontal line parallel to the x- axis with equation

y = c

where c is the value of the y- coordinates the line passes through.

The line passes through (0, - 2) with y- coordinate - 2 , then

y = - 2 ← equation of line

7 0

3 years ago

Read 2 more answers

How do you solve 1/3+1/4

Sophie [7]

1. Find a common denominator

?/12+?/12

2. Find the correcsponding numerator

4/12+3/12

3. Solve

4/12+3/12 = 7/12\

3 0

3 years ago

Read 2 more answers

The tower at Philadelphia City Hall contains four clocks that have a radius of about 3.96 meters. Find how far the minute hand t

Kaylis [27]

Answer:

99.57 meters.

Step-by-step explanation:

Given:

The tower at Philadelphia City Hall contains four clocks that have a radius of about 3.96 meters

Question asked:

Find how far the minute hand travels after each number of rotations around the clock face.

Solution:

Radius, r = 3.96 meters

As we have to find distance traveled by minute hand, we will find circumference of circular clock:-

$Circumference\ of\ circle=2\pi r$

$=2\times\frac{22}{7} \times3.96\\\\ =\frac{174.24}{7} \\\\ =24.8914\ meters$

Hence, we found that at one rotation (distance traveled) of minute hand of each clock is 24.89 meters.

Now, we will find distance traveled by 4 minute hand of 4 clocks = $24.8914\times4=99.5656\ meters$

Therefore, minute hand travels 99.57 meters distance after each number of rotations around the clock face.

7 0

3 years ago