Help please. Will give brainlist

Evaluate the expression when a = -9 and b = - 4.
a? - 2(b + 12)

Answer:

it would decrease by 10%

Step-by-step explanation:

Price elasticity of demand measures the responsiveness of quantity demanded to changes in price of the good.

Price elasticity of demand = percentage change in quantity demanded / percentage change in price  

percentage change in price = ($10 - $8) / $8 = 0.25 x 100 = 25%

0.4 =  percentage change in quantity demanded / 25%

percentage change in quantity demanded = 25% x 0.4 = 10%

Answer:

x + 90 + 63 = 180

Step-by-step explanation:

∠A + ∠B + 45 + 63 = 180     {Straight line angles}

From the figure we know that , ∠B + 45 = 90

Therefore, ∠A + 90 + 63 = 180

Answer:

Option B is correct.

Step-by-step explanation:

∠A = 27

27 + 90 + 63 = 180

you can see that square right. the square is 90.

Have a nice day!

Answer:

$40

Step-by-step explanation:

5(*4)/12(*4)=20/48

If 20/48 of them had 2.00 tips then multiply 20*2= $40

Answer:

35

Step-by-step explanation:

3 + 2 = 5

7 times 5 = 35

Answer:

radius is 8cm

Step-by-step explanation: radius is half of diameter so 16/2= 8

Question

If the diameter of a circle is 16 cm, find it’s radius

soln'

diameter of circle=16cm

radius=?

now

radius formula=2 pie r where pie = 22/7

2*22/7*16

=96

Answer:

12 days

Step-by-step explanation:

1/6 per day

in 6 days- 1 pound

6x2=12 days=2 pounds

hope this helped :)

Answer:

The student can eat the cereal for 12 days

Step-by-step explanation:

2 divided by 1/6 is 12

9514 1404 393

Answer:

  y -4 = -1/3(x -9)

Step-by-step explanation:

The point-slope form of the equation for a line is useful for this.

  y -k = m(x -h) . . . . . . . line through point (h, k) with slope m

You are given (h, k) = (9, 4) and m = -1/3. Putting these values into the form gives the equation ...

  y -4 = -1/3(x -9)

Answer:

Multiply each le and divde from the one on the left

Step-by-step explanation:

Answer:

58

Step-by-step explanation:

180-135= 45

45 + 77 = 122

180 -122 = 58

Answer:

4 hours

Step-by-step explanation:

Because 12 by 8 =96$ and 16 by 6 is equal to 96 too

Answer:

Step-by-step explanation:

Given;

Loan = $5,000

Interest rate = 13% charged at the end of each year

Question 1. Expression to represent the amount owed, in dollars, after;

a. After 1 year.

Owed amount = Loan + accrued interest= $5000 + ( 13% * $5000 * 1 year )

= 5650

b. After 2 years.

Owed amount = Loan + accrued interest

= $5000 + ( 13% * $5000 * 2 years )

= $6300

c. After t years

Owed amount = Loan + accrued interest= $5000 + ( 13% * $5000 * t years )= $5000 + $650t

Question 2. Explain how to convince someone that your expression for t years is correct.

Amount owned= borrowed amount + accrued interest

Accrued interest = Interest rate per year * Loan amount * time in years ( for simple interest case )

Loan amount = $5000

Time = t years

Interest rate = 13% per year

Accrued interest = 13% * $5000 *t years= $650t

Amount owned will therefore be; = Loan amount + Accrued interest

= $5000 + $650t

Answer:

1/3

Step-by-step explanation:

2/3-3/9

multiply 2/3 by 3/3 to get the common denominator 9

2/3*3/3-3/9

6/9-3/9

3/9

simplify

1/3

Answer: -11/15

Step-by-step explanation: To subtract fractions, find the LCD and then combine them.

Answer:

6.5 ft

Step-by-step explanation:

You must use Pythagoras theorem, which is a² + b² = c², then square root c to get answer

if 5.6 = a and 3.3 = b

5.6²+3.3²=42.25(=c²)

42.25 = c²

square root both sides

6.5 = c

Answer:

6.5 ft.

Step-by-step explanation:

To find this you can use the Pythagorean Theorem. [tex]a^2+b^2=c^2[/tex]

[tex]5.6^2 + 3.3^2=C^2[/tex]

31.36+10.89=[tex]C^2[/tex]

42.25=[tex]C^2[/tex]

NOW you have to square root both sides of the equation

[tex]\sqrt{42.25} = \sqrt{C^2}[/tex]

You square root both sides so you can get ride of the exponent on C

So, your answer is 6.5=C

hope this helps :)

p.s. for further questions, [tex]c^2[/tex], is always the opposite side of the right angle.  :)

Answer:

[tex]x + 54\ge 70[/tex]

[tex]x \ge 16[/tex]

Step-by-step explanation:

Given

[tex]Total = 70[/tex] (at least)

[tex]Accumulated = 54[/tex]

Required

Express as an inequality

In inequalities, at least means [tex]\ge[/tex]

So, the expression is:

[tex]x + Accumulated \ge Total[/tex]

Where x represents the additional points

[tex]x + 54\ge 70[/tex]

Solve for x

[tex]x \ge 70 - 54[/tex]

[tex]x \ge 16[/tex]

Hence, she needs at least 16 points

Answer:

5:15 simplified is 1:3

Hope this helps!

Answer:

5:15 simplified (or divided by 5) is 1:3

Step-by-step explanation:

Answer:

angle KJG = angle FGJ (by alternateinteriorangle)

Answer:

False true true true

Step-by-step explanation:

So sorry for the rough sketch but that is how it will reflect

Answer:

i think its 832 im not for sure

Step-by-step explanation:

Answer:

B. 12.5

Step-by-step explanation:

where the box ends on the left side is the 1st quartile.

Answer:

J. 50x < 330 + 30x

Step-by-step explanation:

Answer: A C E RECTANGLE QUADRILATERAL PARELLELOGRAM

Step-by-step explanation:

3+6+3

3+6=9+3=12

12 students received less than 6 gifts.

Hope this helps

Answer:

So sorry but I have no idea, also have a great weekend!

Answer:

a = 5(10²)/2

a = 5(100)/2

a = 250

Answer:

Step-by-step explanation:

Answer:

x=105 _ 72

33 degrees....

Answer:

mmmm

Step-by-step explanation:

Answer:

3x=15

Step-by-step explanation:

3(5)=15 it's the only one where x can be 5