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3 years ago

Which of the following phrases could represent the expression k - 4?

Mathematics

1 answer:

77julia77 [94]3 years ago

5 0

Answer:

a number decreased by four

Step-by-step explanation:

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Please please use explanation with answer

KIM [24]

Answer:

$\large\boxed{\theta=-\dfrac{\pi}{4}+k\pi\ or\ \theta=k\pi}\ for\ k\in\mathbb{Z}$

Step-by-step explanation:

$\tan^2\theta+\tan\theta=0\\\\\tan\theta(\tan\theta+1)=0\iff\tan\theta=0\ \vee\ \tan\theta+1=0\\\\\tan\theta=0\Rightarrow \theta=k\pi\ \text{for}\ k\in\mathbb{Z}\\\\\tan\theta+1=0\qquad\text{subtract 1 from both sides}\\\\\tan\theta=-1\Rightarrow\theta=-\dfrac{\pi}{4}+k\pi\ \text{for}\ k\in\mathbb{Z}$

5 0

3 years ago

In a recent survey, three out of every five students said they would prefer going to a water park for the class trip.

zhuklara [117]

Answer:

the answer is d

Step-by-step explanation:

Just multiply and divide

8 0

3 years ago

If 112 people attend a concert and tickets for adults cost $2.25 while tickets for children cost $and total receipts for the con

Brut [27]

Answer:

42 child and 70 adult

Step-by-step explanation:

Let a = number of adult tickets

c = number of child tickets

a+c = 112

2.25a + 1.75c = 231

Solve the first equation for a

a = 112-c

Substitute this into the second equation

2.25(112-c) + 1.75c = 231

Distribute

252 - 2.25c +1.75c = 231

Combine like terms

252 -.5c = 231

Subtract 252 from each side

252-252 -.5c = 231-252

-.5c = -21

Divide each side by -.5

-.5c/-.5 = -21/ -.5

c = 42

Now can find a

a = 112-c

a = 112-42

a = 70

4 0

3 years ago

Read 2 more answers

(07.06 MC) What is the solution to the equation 1.2m − 0.8 = −2.0m? m = 0.25 m = 0.4 m = 1 m = 4

Vikki [24]

Answer:

m = 0.25

Step-by-step explanation:

-0.8 = -3.2m

m = 0.25

8 0

3 years ago

43 people are going to a club. A taxi can carry 7 people how many takis do they need?

irina1246 [14]

Answer:

They need 7 taxis

Step-by-step explanation:

43/7 is 6.14, and since their cant be .14 f a person you have to round up

7 0

3 years ago