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3 years ago

Please answer all of this!!!! will give brainliest!!!

Mathematics

1 answer:

timurjin [86]3 years ago

8 0

Answer:

I can't see it that well. sorry!

Step-by-step explanation:

You might be interested in

If y varies directly as x and y=35 when x=7, find y when x=11

sveta [45]

Y=kx
35=7k
35/7=k
k=5

y=5x
y=5×11
y=55

3 0

3 years ago

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

3 years ago

Ellie must Mix 6 tablespoons of plant food for every 2 gallons of water if she has 6 gallons of water how much plant food should

miv72 [106K]

She should use 18 tablespoons of plant food.

6÷2= 3

3×6= 18

Hope this helps! :)

\(^ ◇^)/

7 0

3 years ago

PLEASE HELP! Will give brainliest!! No scammers please.

laiz [17]

Answer:

Maximizing Profit. Waterbrook Farm includes 240 acres of cropland. The farm owner wishes to plant this acreage in both corn and soybeans. The profit per acre in corn production is $325 and in soybeans is $180.A total of 320 hr of labor is available. Each acre of corn requires 2 hr of labor, whereas each acre of soybean requires 1 hr of labor. How should the land be divided between corn and soybeans in order to yield the maximum profit? What is the maximum profit?

Step-by-step explanation:

3 0

3 years ago

What is the answer to -|-9|

puteri [66]

Answer:

-9

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers