2 years ago

Need some help please

Mathematics

2 answers:

Naya [18.7K]2 years ago

4 0

The answer is A, 7 because (23+19)÷6= 7

spayn [35]2 years ago

3 0

It would be A.) 7. hope this helps

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Enter numbers into the table so that the paired values are in a proportional relationship.

asambeis [7]

X=1
Y=6

X=3
Y=18

X=5
Y=30

X=7
Y=42

X=9
Y=54

7 0

2 years ago

A line passes through the point (-4,-6) and has a slope of 1/2. What is the equation of the line?

strojnjashka [21]

the equation is 1/2x - 6

7 0

2 years ago

53 out of 100 erasers are blue. What percent of the erasers are blue?

Lilit [14]

53/100 erasers are blue

53/100 = 0.53

0.53 = 53%

53% is your answer

hope this helps

7 0

3 years ago

Read 2 more answers

zubka84 [21]

Answer:

See Explanation Below

Step-by-step explanation:

Given

$(sin x - cos x)^2 = sec^2x - tan^2x - 2sinx.cos x.$

Required

Prove

To start with; we open the bracket on the left hand side

$(sin x - cos x)^2 = (sin x - cos x)(sin x - cos x)$

$(sin x - cos x)^2 = (sin x )(sin x - cos x)- (cos x)(sin x - cos x)$

$(sin x - cos x)^2 = sin^2 x -sinx cos x - sin xcos x + cos^2 x$

$(sin x - cos x)^2 = sin^2 x -2sinx cos x + cos^2 x$

Reorder

$(sin x - cos x)^2 = sin^2 x + cos^2 x - 2sinx cos x$

From trigonometry;

$sin^2x + cos^2x = 1$

So;

$(sin x - cos x)^2 = sin^2 x + cos^2 x - 2sinx cos x$

becomes

$(sin x - cos x)^2 = 1 - 2sinx cos x$

Also from trigonometry;

$sec^2x - tan^2x = 1$

So,

$(sin x - cos x)^2 = 1 - 2sinx cos x$

becomes

$(sin x - cos x)^2 = sec^2x - tan^2x - 2sinx cos x$

Proved

3 0

2 years ago

Problem 1:

wariber [46]

Answer:

x=1/6

Step-by-step explanation:

3x+4=9x+3

isolate x

1=6x

1/6=x

6 0

1 year ago

Read 2 more answers