3 years ago

Complete the multiplication problem to find the answer

Mathematics

1 answer:

GrogVix [38]3 years ago

6 0

Answer:

Step-by-step explanation:

bc when you add the last 2 numbers (on the bottom) you get 8568 but then u have to add find the decimal places which would be 2 so it is b, 85.68

You might be interested in

3. Write an equivalent expression in standard form for<br> (5x – 4y) (7x2 – 12x + 27).

vlabodo [156]

Answer:

sorry

Step-by-step explanation:

i cant help

3 0

4 years ago

Fraction 12-20 conversed into a decimail

rjkz [21]

0.6

I think this will help you

5 0

4 years ago

What inequality represents the following sentence?

Maurinko [17]

C.

Hope this helps! :)

7 0

3 years ago

Given cos x =12/13 And sin x = 5/13<br> what is ratio for tan x? (Explain how you got your answer)

Charra [1.4K]

$tan = \frac{sin}{cos}$
tan = (5/13)/(12/13) = 5/13 * 13/12 = 5/12

4 0

4 years ago

Solve 2sin2(x) – 5sin(x) – 3 = 0. Let u = sin(x). Which of the following is equivalent to the given equation?

Orlov [11]

Answer:

$x=(-1)^{k+1}\cdot \dfrac{\pi}{6}+\pi k,\ k\in Z$

Step-by-step explanation:

Consider the equation

$2\sin^2x-5\sin x-3=0$

Substitute

$u=\sin x$

into the equation:

$2u^2-5u-3=0$

This is quadratic equation, where

$D=(-5)^2-4\cdot 2\cdot (-3)=25+24=49\\ \\\sqrt{D}=7$

Hence,

$u_1=\dfrac{-(-5)-\sqrt{D}}{2\cdot 2}=\dfrac{5-7}{4}=-\dfrac{1}{2}\\ \\u_2=\dfrac{-(-5)+\sqrt{D}}{2\cdot 2}=\dfrac{5+7}{4}=3$

Now, use the substitution again:

1. When $u_1=-\dfrac{1}{2},$ then

$\sin x=-\dfrac{1}{2}\\ \\x=(-1)^k\sin^{-1}\left(-\dfrac{1}{2}\right)+\pi k,\ k\in Z\\ \\x=(-1)^k\cdot \left(-\dfrac{\pi}{6}\right)+\pi k,\ k\in Z\\ \\x=(-1)^{k+1}\cdot \dfrac{\pi}{6}+\pi k,\ k\in Z$

2. When $u_2=3,$ then

$\sin x=3$

This equation has no solutions, because the range of $\sin x$ is $[-1,1]$ and 3>1.

4 0

4 years ago

Read 2 more answers