uhh help lol
5.3x + y = 28.5
4.2x + 3.1y = 27.2
find x and y

Answer:

Step-by-step explanation:

Given that :

Answer:

see explanation

Step-by-step explanation:

Using the chain rule

Given

y = f(g(x)), then

[tex]\frac{dy}{dx}[/tex] = f'(g(x))  × g'(x) ← chain rule

and the standard derivatives

[tex]\frac{d}{dx}[/tex] ([tex]log_{a}[/tex] x ) = [tex]\frac{1}{xlna}[/tex] , [tex]\frac{d}{dx}[/tex](lnx) = [tex]\frac{1}{x}[/tex]

(a)

Given

y = [tex]log_{a}[/tex][tex]\sqrt{(1+x)}[/tex]

[tex]\frac{dy}{dx}[/tex] = [tex]\frac{1}{lna\sqrt{(1+x)} }[/tex] × [tex]\frac{d}{dx}[/tex] ([tex](1+x)^{\frac{1}{2} }[/tex]

   = [tex]\frac{1}{lna\sqrt{(1+x)} }[/tex] × [tex]\frac{1}{2}[/tex] [tex](1+x)^{-\frac{1}{2} }[/tex] × [tex]\frac{d}{dx}[/tex] (1 + x)

   = [tex]\frac{1}{lna\sqrt{(1+x)} }[/tex] × [tex]\frac{1}{2\sqrt{(1+x)} }[/tex] × 1

   = [tex]\frac{1}{2lna(1+x)}[/tex]

   = [tex]\frac{1}{(1+x)lna^2}[/tex]

(b)

Given

y = ln sinx

[tex]\frac{dy}{dx}[/tex] = [tex]\frac{1}{sinx}[/tex] × [tex]\frac{d}{dx}[/tex](sinx)

   = [tex]\frac{1}{sinx}[/tex] × cosx

   = [tex]\frac{cosx}{sinx}[/tex]

   = cotx

Answer: p + 8

Step-by-step explanation:4+ (p +7) - 3

You do 4+7-3=8+p

Answer:

a)12/20

because 5 × 4 = 20 so, 3 also needs to multiply by 4

b)5/6

because 30 ÷ 6 = 5, and 6 × 5 = 30,so, 25 needs to ÷ with 5

B:

Step-by-step explanation

Answer:

4

Step-by-step explanation:

Answer:

82.1

Step-by-step explanation:

a triangle will always be 180° so you add the numbers you have already and subtract them from the total

41.2 + 56.7 =97.9

180-97.9= 82.1

Answer:

To round 3.897 to the nearest tenth consider the hundredths’ value of 3.897, which is 9 and equal or more than 5. Therefore, the tenths value of 3.897 increases by 1 to 9.

3.897 rounded to the nearest tenth = 3.9

Answer:

D. x = 2, y = 2

Answer: I am pretty sure the answer is A, 120.

Step-by-step explanation:

Answer:

10 i think because I added them i don't know though I hope it work sorry

Answer: The answer is A, (3,3)

Step-by-step explanation: Because it would have to have the same x value as J, and the same y value as L because of where it is placed.

Answer:

12

Step-by-step explanation:

So if the difference between the two number is 16 and the distance between the two numbers in the ratio is 4, that means the real numbers are 4 times greater than the ratio (because 4 * 4 = 16).

This means that you can multiply both sides of the ratio by 4 to get the two numbers 3: 7 --> 3*4: 7 * 4 --> 12: 28.

This means that the smaller number is 12.

hope that makes sense!

Answer:

you just have to add 5x+120=180 , since all the angles should add to 180. Doing that, and x will be 12.

Step-by-step explanation:

[tex]180 - 60 - 60 = 5x \\ 5x = 60 \\ x = 12[/tex]

Answer:

can i see the picture?

Answer:

105

160

150

Step-by-step explanation:

This is just simple subtraction.

180-75=105

180-20=160

180-30=150

The sale price of suit will be $196.

A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.

Given that;

A $280 suit is marked down by 30%.

Now,

Since, A $280 suit is marked down by 30%.

Hence, The sale price = $280 - 30% of 280

                                  = $280 - 30/100 × 280

                                  = $280 - $84

                                  = $196

Thus, The sale price of suit = $196.

Learn more about the percent visit:

https://brainly.com/question/24877689

#SPJ1

Answer:

Each day, you record the high temperature* (you don't necessarily need to say that it is for a science project). On Day 1, it was 4* less than Day 10**. It hit 62* F on Day 10. What was the high temperature on Day 1?

Because we know that on Day 1, the temperature was 4* less than on Day 10, and the high temperature on Day 10 was 62*, the high temperature on Day 1 was therefore 58*. Because 62 - 4 = 58.

Step-by-step explanation:

*You don't necessarily need to say that it was for a science project.

**The information for Day 4 is irrelevant too because we are not given the temperature for Day 4, therefore it does not help us find the answer.

Answer:

5m + 5

Step-by-step explanation:

Combine like terms (terms with like & the same amount of the variable).

Set the equation:

(8m - 3m) + (9 - 4)

Simplify by combining like terms:

(8m - 3m)  = 5m

(9 - 4) = 5

5m + 5 is your answer.

~

Answer:

5m+5

Step-by-step explanation:

Answer:

20x=-27 standard form or

20x+27=0 for implicit form

Step-by-step explanation:

Answer:

13 or d

Step-by-step explanation:

The range of the data is D. 13

Given that,

The range is

= Highest number - lowest number

= 15 -2

= 13

Learn more about the range here: https://brainly.com/question/4135956?referrer=searchResults

Step-by-step explanation:

Show Solution. Start by writing the equation of the parabola in standard form. The standard form that applies to the given equation is (x−h)2=4p(y−k) ( x − h ) 2 = 4 p ( y − k ) . Thus, the axis of symmetry is parallel to the y-axis.

Answer:

v=31

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

The computation is shown below:

Given that

3(-2m + 5) - 6(-4m - 2)

-6m + 15 + 24m + 12

18m + 27

Divided by 9

2m + 3

Here a = 2

And, b = 3

So, a + b = 2 + 3 = 5

Answer:

m<1=88

Step-by-step explanation:

The two inside angles add up to the outside angle, so 44+44=88

Answer: 28 1/2

Step-by-step explanation: (7 x 18 + 45) / 3 x 2

7 x 18

126

126+45

171

3 x 2

6

171/6 / 3/3

57/2

28 1/2