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3 years ago

Algebra 2B Review of Trig/Statistics I really need help

Mathematics

1 answer:

alekssr [168]3 years ago

3 0

$\sin B$ is the ratio of the length of the leg opposite angle B to the length of the hypotenuse:

$\sin B=\dfrac{21}{29}$

It will be the same as $\cos A$ , which is the ratio of the length of the leg adjacent to angle A to the lenght of the hypotenuse.

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A friend calls you and asks you to meet at the park 2 mi away in 25 min. You set off on your skateboard after the call. At what

xeze [42]

Answer:

speed greater than 0.08 mi/min

Step-by-step explanation:

given data

distance = 2 mi

time = 25 min

to find out

the distance you travel and your speed and time related

solution

we know that distance is

distance = speed × time ...............1

so at park at most 25 min

so we need time = $\frac{distanec}{speed} \leq 25$

so here

we know

$\frac{2}{25} \leq speed$

$0.08 \leq speed$

so we can say that he need to run at speed greater than 0.08 mi/min

8 0

3 years ago

Consider the function f(x) = x^3 - 7x^2 - 2x + 14

mars1129 [50]

Answer:

There are 3 zeros, which are:

$x=7,\:x=-\sqrt{2},\:x=\sqrt{2}$

Step-by-step explanation:

Given the function

$f\left(x\right)\:=\:x^3\:-\:7x^2\:-\:2x\:+\:14$

To get the zeros of $f(x)$ , set $y$ or $f(x) =0$

$0=x^3-7x^2-2x+14$

$x^3\:-\:7x^2\:-\:2x\:+\:14=\left(x-7\right)\left(x+\sqrt{2}\right)\left(x-\sqrt{2}\right)$

$\left(x-7\right)\left(x+\sqrt{2}\right)\left(x-\sqrt{2}\right)=0$

Using the zero factor principle:

$\mathrm{ \:If}\:ab=0\:\mathrm{then}\:a=0\:\mathrm{or}\:b=0\:\left(\mathrm{or\:both}\:a=0\:\mathrm{and}\:b=0\right)$

$x-7=0\quad \mathrm{or}\quad \:x+\sqrt{2}=0\quad \mathrm{or}\quad \:x-\sqrt{2}=0$

solving

$x-7=0$

$x=7$

$x+\sqrt{2}=0$

$x=-\sqrt{2}$

$x-\sqrt{2}=0$

$x=\sqrt{2}$

Therefore, there are 3 zeros, which are:

$x=7,\:x=-\sqrt{2},\:x=\sqrt{2}$

8 0

3 years ago

How do you write -6 as a inequality

Tanya [424]

Answer: Use a bar or a number line. Try my example with -6.

Step-by-step explanation: Example: x + 2 > 12

Subtract 2 from both sides:

x + 2 − 2 > 12 − 2

Simplify:

x > 10

Solved^

3 0

3 years ago

Solve for x by finding the missing side of the triangle. Round your answer to the nearest tenth.

MAXImum [283]

Answer:

Step-by-step explanation:

Tangent θ = Opposite / Adjacent

tan(29) = 20/x

Cross multiply.

x = 20 / (tan(29))

x = 22.544284

4 0

3 years ago

PLEASE HELP ME WITH THIS QUESTION ASAP

Liono4ka [1.6K]

Answer:

y=5x+(-19)

Step-by-step explanation:

Refer to the picture that given

3 0

3 years ago