when a number is doubled andthen eight added it became 60 what is the number​

Answer:

expanded:

y = sin(4x)*sin(4x)*cos(3x)

need to use the product rule and chain rule

look at individual derivatives, use chain rule

d/dx sin(4x) = 4cos(4x)

d/dx cos(3x) = -3sin(3x)

put it together using product rule

dy/dx = 4cos(4x)*sin(4x)*cos(3x) + 4cos(4x)*sin(4x)*cos(3x) - 3sin(3x)*sin(4x)*sin(4x)

simplify

dy/dx = 8cos(4x)*sin(4x)*cos(3x) - 3sin(3x)*sin2(4x)

answer is A.

Hope it helps friend request me and I'll accept xx:)

The total cost of the tent is 409.86

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explanation:

230×0.65=149.50

230+149.50=379.50×.08=30.36

379.50+30.36=409.86

(Hope this helps :) )

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Explanation:

65% = 65/100 = 0.65

65% of 230 = 0.65*230 = 149.50

When applying markup, the store increases the cost by $149.50 to get the retail price of 230+149.50 = 379.50, which is the price the customer sees. This is the price before tax.

As a shortcut, we can say 1.65*230 = 379.50 because 1.65 = 1 + 0.65 = 100% + 65%. So 1.65 effectively means "increase the value by 65%"

Similarly, the multiplier 1.08 means "increase by 8%". The cost after tax would be 1.08*379.50 = 409.86 which is the answer

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As an even quicker shortcut, we can do both increases at once to say:

1.65*1.08*230 = 409.86

The order of multiplication doesn't matter. The two multipliers 1.65 and 1.08 can be combined into 1.65*1.08 = 1.782 which represents a 78.2% increase overall. After the mark up and tax are considered, the jump from $230 to $409.86 is 78.2%

We can apply the percent change formula to confirm this

A = old value = 230

B = new value = 409.86

C = percent change

C = [ (B-A)/A ] * 100%

C = [ (409.86-230)/230 ] * 100%

C = 0.782 * 100%

C = 78.2%

So it might be tempting to say 65% + 8% = 73%, but as you can see above, that calculation is not true.

Answer:

153.95 feet²

Step-by-step explanation:

Area = pi × r²

radius= 7ft (half of diameter)

3.14 × 7 × 7= 153.95

Answer:

32 years

Step-by-step explanation:

Given data

Principal= $5

Rate= 5%

FInal amount= $25

Time=???

Applying the compound interest formula for time

t= ln(A/P)/r

t= ln(25/5)/0.05

t= ln(5)/0.05

t= 1.60/0.05

t= 35 years

Hence the time is 32 years

Answer:

D)  12 1/2 miles

Step-by-step explanation:

you can create a proportion for inches over miles equals inches over miles

(3/4 ÷ 15/2) = (5/4 ÷ m)

cross-multiply to get:

3/4m = 75/8

cross-multiply again:

24x = 300

x = 12 1/2

Answer:

x = -7

Step-by-step explanation:

10x + 18 = 8x + 4

take away 4 from both sides

10x + 14 = 8x

take away 10x from both sides

14 = -2x

divide botth sides by -2

x = -7

THE ANSWER IS C

its asking the percentage of cats that are no more than 7 pounds

Answer:

26

Step-by-step explanation:

N = 4a + 6b ​

Let a=2 and b=3

N = 4*2 + 6*3

Multiply

N = 8+18

Add

N =26 ​

Answer:

[tex]\huge\boxed{Answer\hookleftarrow}[/tex]

Given,

[tex]a = 2 \\ b = 3[/tex]

So,

[tex]N = 4a + 6b \\ N = 4(2) + 6(3) \\ N = 4 × 2 + 6 × 3 \\ N = 8 + 18 \\ N = 26[/tex]

⎇ The value of N is 26.

Solution given:

1st term[a] :$34000

common difference [d]=$3500

20 th term=?

we have

nth term=a+(n-1)th term*d

20th term=$34000+(20-1)*$3500

Lillian make $100500in her 20th year working at this job.

Answer:

A = $560.00

Step-by-step explanation:

I = A - P = $60.00

Formula:

[tex]A = P(1 + rt)[/tex]

First, converting R percent to r a decimal

r = R/100 = 6%/100 = 0.06 per year.

Solving our equation:

A = 500(1 + (0.06 × 2)) = 560

A = $560.00

The total amount accrued on a principal of $500.00 at a rate of 6% per year for 2 years is $560.00.

Answer:

Its A. 35.3°

Step-by-step explanation:

if its wrong let me know so I can see what I did wrong

Answer:

$17.94 is paid for sales tax

Step-by-step explanation:

Sales tax rate × Price without sales tax = Amount of sales tax

0.06 × 299 = 17.94

(Total paid for the television: $316.94)

Hope this helps :)

Answer:

https://www.calculatorsoup.com/ go to calculator soup! it's literally just a bunch of calculators, i'm sure you can find one!

Answer:f

Step-by-step explanation:

D

Answer:

3/4

Step-by-step explanation:

Answer:

I don't actually know what the answer is but be free to put in the comments. If wondering i put (-∞,1)

Step-by-step explanation:

Answer:

a

Step-by-step explanation:

Answer:

Non-proportional relationship

Step-by-step explanation:

Proportional relationships must pass through the origin. Otherwise, at [tex]x=0[/tex], we lose the constant of proportionality, and the y-value at [tex]x=0[/tex] becomes correlated only to the y-intercept.

The format for a proportional relationships is given by [tex]y=kx[/tex], where [tex]k[/tex] is some constant referred to as the constant of proportionality.

Answer:

its 8.26

Step-by-step explanation:

you just subtract 9.86 with 1.6 and then you get the answer hope I helped

Answer:

3. is a functions and 4 isnt

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Answer:

Body mass is measured in KG, like when you do a BMI the units are kg

Step-by-step explanation:

Answer:

Never learned this

Step-by-step explanation:

Answer:

I think the answer is D. but im not sure

hope this helps

have a good day :)

Step-by-step explanation:

Answer:

it is.............1180 :]

Answer:

6 cans

Step-by-step explanation:

Answer:

4 cans

Step-by-step explanation:

The total area is 2(L * H) + 2(W * H) or

2(20 * 10) + 2(15 * 10)

= 2*200 + 2*150 = 700 total sq ft.

Since one can covers 350, then 700/350 = 2 cans, BUT they want 2 coats so

double it (2*2=4).

Inequality Form:

− 1 ≤ x ≤ 2

Interval Notation:

[ − 1 , 2]

Graph:

Answer:

- 1 ≤ x ≤ 2

Step-by-step explanation:

Given

- 3 ≤ 5x + 2 ≤ 12 ( subtract 2 from each interval )

- 5 ≤ 5x ≤ 10 ( divide each interval by 5 )

- 1 ≤ x ≤ 2