All categories

3 years ago

1.3(8-b)+3.7b= -5.2 solve and check answer

Mathematics

2 answers:

Paraphin [41]3 years ago

6 0

Answer:

b = -6.5

Step-by-step explanation:

I am 100% sure thts the right answer

Dafna1 [17]3 years ago

3 0

Answer:

b=-6.5 is your answer.

Step-by-step explanation:

What you have to do is get b by itself.

1.3(8-b)+3.7b=-5.2

10.4-1.3b+3.7b=-5.2

2.4b+10.4=-5.2

2.4b=-15.6

b=-6.5 is your answer.

You might be interested in

WILL GIVE BRAINLEST ANSWER IF ANSWERED IN THE NEXT 24 HRS Express the complex number in trigonometric form. -5i

trasher [3.6K]

Answer:

$z=5\left(\cos \left(\dfrac{3\pi}{2}\right)+i\sin \left(\dfrac{3\pi}{2}\right)\right)$

Step-by-step explanation:

If a complex number is z=a+ib, then the trigonometric form of complex number is

$z=r(\cos \theta +i\sin \theta)$

where, $r=\sqrt{a^2+b^2}$ and $\tan \theta=\dfrac{b}{a}$ , $\theta$ is called the argument of z, $0\leq \theta\leq 2\pi$ .

The given complex number is -5i.

It can be rewritten as

$z=0-5i$

Here, a=0 and b=-5. $\theta$ lies in 4th quadrant.

$r=\sqrt{0^2+(-5)^2}=5$

$\tan \theta=\dfrac{-5}{0}$

$\tan \theta=\infty$

$\theta=2\pi -\dfrac{\pi}{2}$ $[\because \text{In 4th quadrant }\theta=2\pi-\theta]$

$\theta=\dfrac{3\pi}{2}$

So, the trigonometric form is

$z=5\left(\cos \left(\dfrac{3\pi}{2}\right)+i\sin \left(\dfrac{3\pi}{2}\right)\right)$

4 0

3 years ago

Read 2 more answers

Minus always used _____ a term

Llana [10]

To subtract? as minus means subract/take away?

3 0

3 years ago

Really really easy question. please help.

never [62]

Answer:

line

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Solve for x. Find the angle measures. Angle AOB=x+3, angle AOC=2x+11, angle BOC=4x-7

Ghella [55]

Answer:

x=5

AOB = 8

BOC = 13

AOC = 21

Step-by-step explanation:

Angle AOB and Angle BOC is equal to Angle AOC.

AOB = x+3

BOC = 4x-7

AOC= 2x+11

AOB + BOC = AOC

x+3+4x-7 = 2x+11

5x-4 = 2x+11

3x = 15

x = 5

Therefore, the value of x is 5.

Angle AOB = x+3

AOB = 5+3

AOB = 8

Angle BOC = 4x-7

BOC = 4(5)-7

BOC = 13

Angle AOC = 2x+11

AOC = 2(5)+11

AOC = 21

4 0

3 years ago

Read 2 more answers

Can someone help me plz??

Brut [27]

Answer:

96π

Step-by-step explanation:

$v = \frac{1}{3} {r}^{2} h\pi$

V=96π

5 0

3 years ago