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pav-90 [236]
3 years ago
6

PLZ HELP E!!!!!!! WILL MARK BRAINLIEST

Mathematics
1 answer:
AysviL [449]3 years ago
3 0

Answer:

sec

x

=

1

cos

x

and  

sin

2

x

+

cos

2

x

=

1

consider the left side

⇒

1

+

1

cos

2

x

×

sin

2

x

=

cos

2

x

cos

2

x

+

sin

2

x

cos

2

x

=

cos

2

x

+

sin

2

x

cos

2

x

=

1

cos

2

x

=

sec

2

x

=

right side

⇒

verified

Step-by-step explanation:

Hope this helps plz mark brailiest if does

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Is 4.876 >4.879 or <
Eddi Din [679]
4.876 < 4.879

the first three digits are the same, however the last digit, which is the fourth digit from both sides are 6 and 9
6 is less than 9 therefore that determines the whole value of 4.876 to be less than 4.879
4 0
3 years ago
Question # 4
Sedbober [7]

Answer:

Brett  is 62 years old, Carl is 70 years old and Mark is 80 years old.

Step-by-step explanation:

let the age of Brett be <em>x</em> years.

thus the age of Mark is <em>(x+18)</em> years .

{as it is given that Brett is 18 years younger than Mark}

∴ Age of Carl is <em>(x+8) </em>years .

Now the sum of ages,

3x+26=212 (given)

3x=186

∴x=62

thus , the age of Brett is 62 years , the age of mark is <em>(x+18)</em>= 80 years and the age of Carl is <em>(x+8)</em>= 70 years

3 0
3 years ago
A band sells T-shirts at their concerts. After one concert, they sold 320 out of 400 black T-shirts and 270 out of 300 blue T-sh
Paha777 [63]
Percentage of black T-shirt sold = 320/400 x 100 = 80%

Percentage of blue T-shirt sold = 270/300 x 100 = 90%

Answer: There is a greater percentage of Blue T-Shirt sold.
7 0
4 years ago
the surface area of a rectangular prism is 190 square inches the length is 10 inches and the width is three inches find the heig
Nastasia [14]

Answer:

h=5in

Step-by-step explanation:

The following areas are equal:

1. Front and Back.

2. Left and right.

3. Top and Bottom.

Therefore, we calculate 3 areas and

multiply each by 2 to get the 6 areas:

As=2(3*h) + 2(10*h) + 2(10*3)=1901n^2.

6h + 20h + 60 = 190,

26h = 190 - 60 = 130,

h = 5in.

7 0
3 years ago
You have a total of 42 math and science problems for homework. You have 10 more math problems than science problems. How many pr
elena-14-01-66 [18.8K]

Answer:

number of math problems = 26

number of science problem = 16

Step-by-step explanation:

a total of 42 math and science problems for homework

Let m be the number of math problems and 's' be the number of science problems

m+s=42

You have 10 more math problems than science problems

m=s+10

substitute s+10 for m in the first equation

m+s=42

s+10+s=42

2s+10=42

subtract 10 from both sides

2s = 32

divide both sides by 2

s= 16

m=s+10

m=16+10

m=26

number of math problems = 26

number of science problem = 16

3 0
4 years ago
Read 2 more answers
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