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Alenkinab [10]
2 years ago
15

Answer the following True or False:

Mathematics
1 answer:
Ilia_Sergeevich [38]2 years ago
4 0

False; consider as a counterexample the function <em>f</em> : ℝ→ℝ defined by

f(x)=\begin{cases}-3&\text{for }x\neq2\\0&\text{for }x=2\end{cases}

Clearly <em>f</em> approaches -3 as <em>x</em> gets closer to -2, but neither limit from either side is equal to the function's value at <em>x</em> = 2 (that is, -3 ≠ 0), so <em>f</em> is not continuous.

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Help ASAP please and explain tooo
Alla [95]

Answer:

A not similar

Step-by-step explanation:

These triangles are not similar

<K would have to equal either angle E or D since angle F equals angle F

E = 50 and D = 58   and K = 49 so K does no equal E or D so they cannot be similar

3 0
3 years ago
What value of y makes this equation true <br><br> 14•y =126
Veseljchak [2.6K]

Answer:

y = 9

Step-by-step explanation:

to solve this equation, you first have to divide:

14 * y = 126

/14         /14

y = 9

and there is the answer. If you need to prove that y = 9, just input it into the equation.

14 * 9 = 126

126 = 126

4 0
3 years ago
A price is decreased from £800 to £640. Calculate the percentage change.
Anni [7]
<span>There is a decrease of 20% from ÂŁ800 to ÂŁ640.

    A change from 800 to 640 represents a negative change (decrease) of -20% Using the formula :

   Percent change = [(800 - 640) / 800] x 100 = -20 % (decrease)

       800 is the old value and 640 is the new value. In this case we have a negative change (decrease) of -20 percent because the new value is smaller than the old value.</span>
6 0
3 years ago
Read 2 more answers
Brian rides his bicycle 24 miles in 2 hours. Write a ratio of Brain's miles per hour. (Remember always express ratios in simples
erica [24]

Answer: 12:1

Step-by-step explanation: Brian rides his bike 12 miles in 2 hours

8 0
3 years ago
Read 2 more answers
What is an equation of the line that passes through the point (8,-7)(8,−7) and is parallel to the line 5x+4y=165x+4y=16?
gizmo_the_mogwai [7]

Answer:

The equation of line that passes through the point (8,-7) and is parallel to the line 5x+4y=16 is  \mathbf{y=-\frac{5}{4}x+3}

Step-by-step explanation:

We need to write an equation of the line that passes through the point (8,-7) and is parallel to the line 5x+4y=16.

The equation will be of form y=mx+b where m is slope and b is y-intercept.

Finding slope of the line:

Since both the lines are parallel, and we know that parallel lines have same slope.

The slope of given line 5x+4y=16 can be found by writing in slope-intercept form y=mx+b

5x+4y=16\\4y=-5x+16\\y=-\frac{5}{4}x+16

Comparing with y=mx+b the slope m is: m=-\frac{5}{4}

So, the slope of required line is: m=-\frac{5}{4}

Now, finding y-intercept b

y-intercept can be found using slope m=-\frac{5}{4} and point (8,-7)

y=mx+b\\-7=-\frac{5}{4}(8)+b\\-7=-5(2)+b\\-7=-10+b\\b=-7+10\\b=3

So, we get y-intercept: b=3

Now, the equation of required line having slope m=-\frac{5}{4} and y-intercept b=3 is:

y=mx+b\\y=-\frac{5}{4}x+3

So, the equation of line that passes through the point (8,-7) and is parallel to the line 5x+4y=16 \mathbf{y=-\frac{5}{4}x+3}

4 0
2 years ago
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