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3 years ago

The expression a[b+(c−d)]

Mathematics

1 answer:

maria [59]3 years ago

5 0

Answer:

Step-by-step explanation:

When you distribute values, 'a' while be multiplied by everything. since there is a plus sign in front of the 'b' then that will not be distributed. so an 'ab' will add the an 'ac' but an 'ad' is still going to subtract away from the equation.

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What is the solution to the equation -2n -2 / 3 =12 ? n =

SVEN [57.7K]

The answer is n= -19/3

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3 years ago

All right at least two equivalent expressions for: 3a + 12

densk [106]

two equivalent expressions for: 3a + 12

3(a + 4)
2a + 12 + a

hope that helps

6 0

3 years ago

PLEASE HELP! URGENT WILL GIVE BRAINLEST! PLEASE ANSWER ALL QUESTIONS!!! IF YOU DON'T I WILL REPORT.

Nesterboy [21]

Answer:

1. b) 135°, 225°

2. c) 0°, 180°

3. a) π/2

4. b) 30°, 150°, 210°, 330°

5. a) 1.25 radians and 4.39 radians

Step-by-step explanation:

Question 1

$\begin{aligned}\cos \theta & = -\dfrac{\sqrt{2}}{2}\\\implies \theta & = \cos^{-1}\left(-\dfrac{\sqrt{2}}{2}\right)\\\\& = 135^{\circ} \pm 360^{\circ}n, 225^{\circ} \pm 360^{\circ}\\\\& = 135^{\circ}, 225^{\circ}\quad \textsf{for}\:0^{\circ}\leq \theta < 360^{\circ}\end{aligned}$

Question 2

$\begin{aligned}\cos^2 \theta-1 & = 0\\\implies \cos^2 \theta & = 1\\\cos \theta & = \pm1\\\theta & = \cos^{-1}(\pm1)\\& = 0^{\circ} \pm 360^{\circ}n, 180^{\circ} \pm360^{\circ}n\\& = 0^{\circ}, 180^{\circ}\quad \textsf{for}\:0^{\circ}\leq \theta < 360^{\circ}\end{aligned}$

Question 3

$\begin{aligned}\sin \theta & = 1\\\implies \theta & = \sin^{-1}(1)\\\theta & = \dfrac{\pi}{2}\pm2\pi n\\\theta & = \dfrac{\pi}{2}\quad \textsf{for}\:0 \leq \theta < 2 \pi \end{aligned}$

Question 4

$\begin{aligned}3 \tan^2 \theta-1 & = 0\\\implies \tan^2 \theta & = \dfrac{1}{3}\\\tan \theta & = \pm\dfrac{1}{\sqrt{3}}\\\theta & = \tan^{-1}\left(\pm\dfrac{1}{\sqrt{3}}\right)\\& = 30^{\circ}\pm180^{\circ}n, 150^{\circ}\pm180^{\circ}n\\& = 30^{\circ}, 150^{\circ}, 210^{\circ}, 330^{\circ}\quad \textsf{for}\:0^{\circ}\leq \theta < 360^{\circ}\end{aligned}$

Question 5

$\begin{aligned}2 \tan \theta -6 & = 0\\\implies \tan \theta & = 3\\\theta & = \tan^{-1}(3)\\\theta & = 1.25\pm \pi n\\\theta & = 1.25, 4.39 \quad \textsf{for}\:0^{\circ}\leq \theta < 2 \pi \end{aligned}$

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2 years ago

Read 2 more answers

Alejandra tiene una cubeta de 1 1/2 litros de pintura que le sobraron de su último mural. Para no cargar toda la cubeta, ella di

laiz [17]

Answer:

The correct answer is 6 jars can be used

Step-by-step explanation:

According to the given scenario, the calculation of the number of jars needed is shown below:

The 1 1 ÷ 2 liters means = 3 ÷ 2 liters

And, the paint is divided into 1 ÷4 liter jars

So, the number of jars needed is

= (3 ÷ 2) ÷ ( 1 ÷ 4)

= (4 × 3) ÷ 2

= 6 jars needed

Therefore the number of jars needed is 6 jars

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3 years ago

Use the box plots comparing the number of males and number of females attending the latest superhero movie each day for a month

Lilit [14]

Answer:

The formula for iqr is q3 - q1

Step-by-step explanation:

4 0

3 years ago