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3 years ago

Simplify the expression. 1/2 (-sin2x - cos 2x)

Mathematics

1 answer:

maria [59]3 years ago

4 0

Answer:

1/2 (-sin2x - cos 2x)

Step-by-step explanation:

Distribute 1/2 to every term in the parentheses

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a basketball court is a rectangle that is 94 feet long the area is 4700 square feet what is the width of the basketball court

andre [41]

Answer:

A=l x w 4700=94x? 4799/94~jz

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3 years ago

What is y=\dfrac{2}{3}x+4y=

lara [203]

Answer:

$12y+x-12=0$

Step-by-step explanation:

If I'm not mistaken by the question, we have

$x+4y=\dfrac{2}{3}x+4$

Multiply through by the LCM of all the denominators to clear the fractions. Since we have only one fraction, we multiply through by its LCM (3)

$3\timesx+3\times4y=3\times\dfrac{2}{3}x+3\times4$

$3x+12y=2x+12$

Putting all terms on the LHS (left hand side) and evaluating,

$12y+x-12=0$

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3 years ago

Evaluate 6 x (15 - 7) - 4 A: 10 B: 24 C: 44 D: 79

Svet_ta [14]

First Of All Please Follow This
PEMDAS

P: ()
E:^
M:x
D:/
A:+
S:-

6 x (15 - 7) - 4
6 x (8) - 4
48 - 4
44

Answer: C

6 0

3 years ago

Read 2 more answers

a class has 60 students.Given that 85% passed a science test. Find the number of students who failed and then convert o %

Vanyuwa [196]

Given:

Total students = 60

Student passed = 85%

To find:

The number of students who failed and then convert it in %.

Solution:

We have,

Number of passed student = 85% of Total students

= $\dfrac{85}{100}\times 60$

= $51$

So, number of passes students is 51.

Number of students who failed = Total students - Passes students

= $60-51$

= $9$

So, number of students who failed is 9.

$\text{Fail}\%=\dfrac{\text{Failed students}}{\text{Total students}}\times 100$

$\text{Fail}\%=\dfrac{9}{60}\times 100$

$\text{Fail}\%=15$

Therefore, 15% students fail in the test.

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2 years ago

(y +12) (y - 18) (x) (z) x= y = Z =

Wittaler [7]

Answer:

YURRRRRRRRRRRRRRRRRRRRRRR

Step-by-step explanation:

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3 years ago