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3 years ago

Someone please help me !!!! Will mark Brianliest !!!!!!!!!!!!!!!!

Mathematics

1 answer:

BARSIC [14]3 years ago

5 0

Answer:

once again try -4+1

hope it helps

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Frances read 4/5 of an article in three minutes. How much of the article did she read each minute?

Margarita [4]

Answer:

0.267

Step-by-step explanation:

0.2666666666666667

8 0

3 years ago

Please help i beg i never get these right

Anuta_ua [19.1K]

Answer:

$\sin(105) = \frac{\sqrt 2 + \sqrt 6}{4}$

Step-by-step explanation:

Given

$\sin(105^o)$

Required

Solve

Using sine rule, we have:

$\sin(A + B) = \sin(A)\cos(B) + \sin(B)\cos(A)$

This gives:

$\sin(105^o) = \sin(60 + 45)$

So, we have:

$\sin(60 + 45) = \sin(60)\cos(45) + \sin(45)\cos(60)$

In radical forms, we have:

$\sin(60 + 45) = \frac{\sqrt 3}{2} * \frac{\sqrt 2}{2} + \frac{\sqrt 2}{2} * \frac{1}{2}$

$\sin(60 + 45) = \frac{\sqrt 6}{4} + \frac{\sqrt 2}{4}$

Take LCM

$\sin(60 + 45) = \frac{\sqrt 6 + \sqrt 2}{4}$

Rewrite as:

$\sin(60 + 45) = \frac{\sqrt 2 + \sqrt 6}{4}$

Hence:

$\sin(105) = \frac{\sqrt 2 + \sqrt 6}{4}$

3 0

3 years ago

If f(x) = -x^3 + 2x^2 - 3, find f(2). A) -19 B) -3 C) -1 D) 5

AfilCa [17]

Answer:

Step-by-step explanation:

To evaluate f(2) substitute x = 2 into f(x), that is

f(2) = - (2)³ + 2(2)² - 3 = - 8 +2(4) - 3 = - 8 + 8 - 3 = - 3

7 0

3 years ago

Easy questions pls help (question in picture)

lisabon 2012 [21]

Answer:

1. P= 80

60/.75=80

2. x= 5/3

-27/25x / -27/25= -9/5 / -27/25

-9/5 / -27/25 --- -9/5 x -25/27

3. -300

-2.7/-2.7 = 810/-2.7

4. 120

84x100/70

84/x = 70/100

6 0

3 years ago

Read 2 more answers

What is the value of tan M?

ludmilkaskok [199]

Hi there! The answer is 15/8.

The general formula for the tangent is
$\tan(m) = \frac{opposite}{adjecent}$

When we fill in the data from the picture, we get the following:
$\tan(m) = \frac{15}{8}$

4 0

3 years ago