Ask question

Ask question

All categories

3 years ago

7

I've been on this question for 15 min..... please help

2 answers:

Elanso [62]3 years ago

7 0

I believe the answer would be no

enyata [817]3 years ago

3 0

I agree the answer is Yes also :)

You might be interested in

Please help with this question

Rama09 [41]

Answer:

-3.662rad × 180/π = -209.8°

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Calculate the distance between the points J=(-3, -2) and G=(3, 1) in the coordinate plane.

liubo4ka [24]

Answer:

√45

Step-by-step explanation:

Hope this helps! Pls give brainliest!

This is the most accurate answer I can give otherwise you have to round.

5 0

3 years ago

If 2(4x + 3)/(x - 3)(x + 7) = a/x - 3 + b/x + 7, find the values of a and b.

zmey [24]

Answer:

$a=3$ and $b=5$ .

Step-by-step explanation:

So I believe the problem is this:

$\frac{2(4x+3)}{x-3}(x+7)}=\frac{a}{x-3}+\frac{b}{x+7}$

where we are asked to find values for $a$ and $b$ such that the equation holds for any $x$ in the equation's domain.

So I'm actually going to get rid of any domain restrictions by multiplying both sides by (x-3)(x+7).

In other words this will clear the fractions.

$\frac{2(4x+3)}{x-3}(x+7)}\cdot(x-3)(x+7)=\frac{a}{x-3}\cdot(x-3)(x+7)+\frac{b}{x+7}(x-3)(x+7)$

$2(4x+3)=a(x+7)+b(x-3)$

As you can see there was some cancellation.

I'm going to plug in -7 for x because x+7 becomes 0 then.

$2(4\cdot -7+3)=a(-7+7)+b(-7-3)$

$2(-28+3)=a(0)+b(-10)$

$2(-25)=0-10b$

$-50=-10b$

Divide both sides by -10:

$\frac{-50}{-10}=b$

$5=b$

Now we have:

$2(4x+3)=a(x+7)+b(x-3)$ with $b=5$

I notice that x-3 is 0 when x=3. So I'm going to replace x with 3.

$2(4\cdot 3+3)=a(3+7)+b(3-3)$

$2(12+3)=a(10)+b(0)$

$2(15)=10a+0$

$30=10a$

Divide both sides by 10:

$\frac{30}{10}=a$

$3=a$

So $a=3$ and $b=5$ .

4 0

3 years ago

Read 2 more answers

Elmer has a collection of 300 fossils .of these , 21% are fossilized snail shells.how many fossilized snail shells does Elmer ha

AVprozaik [17]

Answer

63 are snail shells

Step-by-step explanation:

All I did was 300x.21 to get 63

6 0

4 years ago

Find the length of side a in simplest radical form with a rational denominator.

Goshia [24]

Answer:

x = 5.5

Step-by-step explanation:

Using a trig ratio, you can use sin, which is opposite over hypotenuse. $sin(30)\textdegree=\frac{x}{11}$

Now, multiply both sides by 11

$11\cdot sin(30)\textdegree=x$

this simplifies to x = $\frac{11}{2}$ or 5.5.

Since sin30 is $\frac{\pi}{6}$ radians, it can be written as $\frac{11\pi}{6}$ .

8 0

2 years ago