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3 years ago

Find the exact value of cos ⁡ A cosA in simplest radical form.

Mathematics

1 answer:

Lostsunrise [7]3 years ago

7 0

Answer:

cosA =sinA

Step-by-step explanation:

..... . ......... ....

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2p x 3q x 5r maths watch

Zepler [3.9K]

Answer:

2px^ 8 qr

Step-by-step explanation:

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "x5" was replaced by "x^5". 1 more similar replacement(s).

STEP 1 :

Equation at the end of step 1

((2px3 • q) • x5) • r

STEP 2 :

Final result :

2px8qr

HOPE THIS HELPS!

PLEASE MARK BRAINLIEST IF THIS HELPED YOU LEARN! :)

3 0

3 years ago

Read 2 more answers

MaryBeth works from home as a graphic designer. Recently she raised her hourly rate by 6% to cover increased costs. Her new hou

mojhsa [17]

Answer:

$21.59

Step-by-step explanation:

The original hourly rate was x.

She raised it 6%. The raise is 6% of x, or 0.06x.

The new rate is x + 0.06x or 1.06x.

The new rate is $22.89.

1.06x = 22.89

Divide both sides by 1.06.

x = 21.59

7 0

3 years ago

A dog weighs two pounds less than three times the weight of a cat. The dog also weights twenty-two more pounds than the cat. Wri

8090 [49]

Answer:

Weight of dog: 34 pounds,

Weight of cat: 12 pounds.

Step-by-step explanation:

Let d represent weight of dog and c represent weight of cat.

We have been given that a dog weighs two pounds less than three times the weight of a cat.

3 times weight of cat: $3c$

We can represent the given information in an equation as:

$d=3c-2...(1)$

We are also told that the dog also weights twenty-two more pounds than the cat. We can represent the given information in an equation as:

$d=c+22...(2)$

Equate both equations:

$3c-2=c+22$

$3c-c-2=c-c+22$

$2c-2=22$

$2c-2+2=22+2$

$2c=24$

$\frac{2c}{2}=\frac{24}{2}$

$c=12$

Therefore, the weight of cat is 12 pounds.

Substitute $c=12$ in equation (2)

$d=c+22$

$d=12+22$

$d=34$

Therefore, the weight of dog is 34 pounds.

4 0

3 years ago

(5+10p) +13 a.28p b.15p+13 c.23p+5 d.10p+18

Sliva [168]

5+10p+13 <--remove the parentheses
And now just add like terms
(10p)+(5+13)
10p+18 <---answer

3 0

3 years ago

Read 2 more answers

A manager records the repair cost for 14 randomly selected dryers. A sample mean of $88.34 and standard deviation of $19.22 are

s2008m [1.1K]

Answer:

Hence the 90% confidence interval estimate of the population mean is $(79.24 , 97.44)$

Step-by-step explanation:

Given that,

Point estimate = sample mean = $\bar x$ = 88.34

sample standard deviation = s = 19.22

sample size = n = 14

Degrees of freedom = df = n - 1 = 13

Critical value = $t\alpha /2,$ df = 1.771

Margin of error

$E = t\alpha/2,df \times (\frac{s}{\sqrt{n} } )\\= 1.771 \times (19.22 / \sqrt 14)$

Margin of error = E = 9.10

The 90% confidence interval estimate of the population mean is,

$\bar x - E < \mu < \bar x + E\\\\88.34 - 9.10 < \mu < 88.34 + 9.10\\\\79.24 < \mu < 97.44\\(79.24 , 97.44)$

8 0

3 years ago