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4 years ago

Which following statements are false

2 answers:

8 0

I think b or c I think b more because I don't think angle measurements have to do with complementary angles but I'm not sure what a strain angle is its been two years since ive taken geometry so I'm not positive but I think its B

andre [41]4 years ago

3 0

C is the answer i think

You might be interested in

In a 10 mile race, Janet covered the first 2 miles at a constant rate. She then sped up and rode her bike the last 8 miles at a

xenn [34]

Answer:

$0.83\text{ miles per minute}$

Step-by-step explanation:

GIVEN: In a $10$ mile race, Janet covered the first $2$ miles at a constant rate. She then speed up and rode her bike the last $8$ miles at a rate that was $0.5$ miles per minute faster. Janet's overall time would have been $2$ minutes faster had she ridden her bike the whole race at the faster pace.

TO FIND: What was Janet's average speed (in miles per minute) for the whole race?

SOLUTION:

let the speed of Janet in first $2\text{ miles}$ $=x\text{ miles per minute}$

speed of Janet's bike in last $8\text{ miles}$ $=x\text{+0.5 miles per minute}$

total time taken by Janet,

$\text{Time}=\frac{\text{distance}}{\text{speed}}$

$\text{Time taken}=\frac{2}{x}+\frac{8}{x+0.5}\text{minute}$

Time taken if Janet rides whole race at faster pace $=\frac{10}{x+0.5}\text{minute}$

As, Janet's overall time would have been $2\text{ minutes}$ faster had she ridden her bike the whole race at the faster pace.

$\frac{2}{x}+\frac{8}{x+0.5}=\frac{10}{x+0.5}+2$

$\frac{2}{x}-\frac{2}{x+0.5}=2$

$\frac{1}{x}-\frac{1}{x+0.5}=1$

$x^{2} +0.5x-1=0$

on solving we get

$x=0.5\text{ miles per minute}$

$\text{Time taken}=\frac{2}{x}+\frac{8}{x+0.5}\text{minute}$

$\text{Time taken}=\frac{2}{0.5}+\frac{8}{1}\text{minute}$

$\text{Time taken}=\frac{2}{x}+\frac{8}{x+0.5}\text{minute}$

$\text{Time taken}=12\text{minute}$

Average speed $=\frac{\text{total distance}}{\text{time taken}}$

Average speed $=\frac{10}{12}=0.83\text{miles per minute}$

Therefore average speed of Janet was $0.83\text{ miles per minute}$

4 0

3 years ago

Find the distance between the points (-5,1) and (-2,-5)

Delvig [45]

Answer:

d= 3√5

Step-by-step explanation:

8 0

3 years ago

How can I solve for the weight for okapi and llamas

Gre4nikov [31]

U can't lol I'm sorry

8 0

3 years ago

Can anyone show me the steps and answer?

valina [46]

Answer:

(-∞, 3) ∪ (3, 4) ∪ (4, ∞)

Step-by-step explanation:

<u>Steps</u>:

1. Read and understand the question. Here, you're being asked for the domain of a rational function, one with a 2nd-degree polynomial in the denominator. The domain is the set of x-values for which the function is defined.

2. Understand that the function will be undefined when the denominator is zero, so to answer the question, you must find the values of x that make the denominator zero.

3. Use any of the methods you have been taught to determine the zeros of the denominator polynomial. For this one, it is convenient to factor it:

x² -7x +12 = (x -3)(x -4)

The values of x that make this zero are 3 and 4, so these values are excluded from the domain.

4. Write an expression in interval notation that includes all real numbers except 3 and 4. That is, you want to translate this to interval notation:

(-∞ < x < 3) ∪ (3 < x < 4) ∪ (4 < x < ∞)

Using what you know about interval notation, you write it as ...

(-∞, 3) ∪ (3, 4) ∪ (4, ∞)

8 0

3 years ago

Here is the hair length of a sample of 10 students:

scZoUnD [109]

Answer:

The answer to your question is below

Step-by-step explanation:

Mean

(15 + 4 + 14+ 1.5 + 22 + 2 + 16 + 19 + 18 + 3) / 10

= 114.5/10

= 11.45

Median

1.5 , 2, 3, 4, 14, 15, 16, 18, 19, 22

(14 + 15) / 2

= 14.5

Mode

There is no mode

Standard deviation

Formula

$\sqrt{\frac{(x - xm)^{2}}{n - 1}}$

Standard deviation = 7.5

5 0

3 years ago