guys help me im du.mb

Answer:

Step-by-step explanation:

A. S=strawberry, C=chocolate

    S+C=14 equation 1

     2s+3c=30 equation 2

B. -2(s+c)=-2(14) multiply equation 1 by -2 to use elimination method  

   -2s+-2c=-28 modified Equation 1

    2s+ 3c=30. Equation 2

          C=2 add above two equations.

solve for s

s+c=14

s+2=14

s=12

Used elimination method since it was easier to add the two equations.

check answer by inputting s,c values in either equation.

2s+3c=30

2(12)+3(2)=30

24+6=30

30=30

9514 1404 393

Answer:

Step-by-step explanation:

Part A:

I like to use variable names that remind me what they stand for. Here, we can use s and c for the numbers of strawberry and chocolate packets, respectively. The two equations we can write based on the problem statement are ...

  2s + 3c = 30 . . . . . . . the total cost of the purchase

  s + c = 14 . . . . . . . . . . the number of items purchased

__

Part B:

Ordinarily, I would use one equation for the problem. That equation can be arrived at by substituting for s using the second equation. We choose to substitute for s so the only remaining variable is the one representing the highest-value contributor to the total cost.

  s = 14 -c

  2(14 -c) +3c = 30 . . . . substitute for s

  28 +c = 30 . . . . . . . . . simplify (notice the coefficient of c is positive)

  c = 2 . . . . . . . . . . . subtract 28

  s = 14 -2 = 12 . . . . find s using the above equation

They bought 2 packets of chocolate and 12 packets of strawberry wafers.

__

Explanation of choices

When the total purchase is n items and x of them are of one kind, then n-x is the number of the other kind. You don't need to write a second equation to figure that out. Hence the problem can be described by a single equation, such as the one highlighted above. Doing this lets you skip a variable definition and a couple of solution steps you don't really need.

The choice of variable as being the high-cost item ensures that its coefficient in the equation will be positive. Fewer errors are made when arithmetic is done with positive numbers. Again, recognizing that early on saves headaches down the line.

Getting to a generic solution

Note that the number we subtract (28) is the "would be" cost of all of the items purchased being the lowest-cost item (14 strawberry packets). This recognition can let you do the entire problem in your head. The difference between the actual cost and the "would be" cost is the result of replacing some number of the lowest-cost items with the higher-cost ones. The difference between total costs is divided by the difference in cost per item to find the number of the higher-cost item. That is the answer to all problems of this type. (30 -14(2))/(3-2) = 2 = the number of $3 packets.

Answer:

x=4

Step-by-step explanation:

Rewrite as

x-2+10=12

x=12+2-10

x=4

Answer:

1. 28   2. 88   3. 16   4. 196  

Your welcome! :)

Answer:

144 lol

Step-by-step explanation:

Answer: $52.50

Step-by-step explanation:

There is only 12 months and the interest compounds yearly so I guess it is just

3500 x 1.5% = 3500 x 1.5 / 100 = 35 x 1.5 = $52.50

Rounding is not needed

Answer:

Mai

Step-by-step explanation:

1. 21.675 R $22

2. $21

Mai is the correct method because 15%-100%=85, which shows the percentage that is left to multiple. Then she multiples 0.85 times 2 as she was able to take off 15% twice. Elena's is incorrect because she added the two 15% off and subtracted that by 100 giving her 70. Which is the incorrect decimal to multiple by. Hope this helps.

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Answer:

Step-by-step explanation:

a+b=9500 equation 1

35a+55b=432500 equation 2

a=9500-b modified equation 1 to isolate a

35(9500-b)+55b=432500 substitute value of a in equ 1 into value of a equ 2

332500-35b+55b=432500

20b=100000

b=5000

solve for a

a + b=9500

a + 5000=9500

a=4500

check answer:

35a+55b=432500

35(4500)+55(5000)=432500

157500+275000=432500

432500=432500

Answer:

[tex]x = 3[/tex]

Step-by-step explanation:

[tex]6(2)x + (2)y = 12(2) \\ + \\ - 4x - 2y = 0 \\ = \\ 8x = 24 \\ x = 24 \div 8 \\ x = 3[/tex]

Answer:

m<U = 38degrees

Step-by-step explanation:

From the given diagram, <B = <U since both triangles are similar, hence;

Hence;

2y+2 = 3y-16

2y - 3y = -16 - 2

-y = -18

y = 18

Get m<U

m<U = 3y-16

m<U = 3(18) -16

m<U = 54 - 16

m<U = 38degrees

Step-by-step explanation:

sorry these is notr qoustoin:(

Answer:

[tex]\lim_{x\to -\infty} f(x)=\infty,\\\lim_{x\to \infty} f(x)=2,[/tex]

Step-by-step explanation:

The end behaviors of a function simply denote where the function is headed at x approaches negative and positive infinity. In [tex]f(x)=\left(\frac{1}{3}\right)^x+2[/tex], as [tex]x[/tex] gets approaches [tex]-\infty[/tex], the function will approach [tex]y=\infty[/tex]. As [tex]x[/tex] approaches [tex]\infty[/tex], the function will approach [tex]y=2[/tex].

We can write this in the following format to denote these end behaviors:

[tex]\lim_{x\to -\infty} f(x)=\infty,\\\lim_{x\to \infty} f(x)=2,[/tex]

Answer:

16.5 feet

Step-by-step explanation:

Length (L) = 5.5 feet

Width (W) = 2.75 feet

16.5 feet

Ms.Patterson need 16.5 feet border.

Please mark as brainliest if answer is right

Have a great day, be safe and healthy  

Thank u  

XD  

intersection is the answer

Answer:

[tex]105\:\mathrm{m^3}[/tex]

Step-by-step explanation:

The volume of a rectangular prism is given by [tex]V=l\cdot w\cdot h[/tex]. Plugging in given values, we have [tex]V=1.5\cdot 10\cdot 7=\boxed{105\:\mathrm{m^3}}[/tex].

Answer:

105

Step-by-step explanation:

Length × Width × height

10×7× 1.5

(10×7) 1.5

70×1.5

=105

Answer:

1396

Step-by-step explanation:

Profit= revenue-cost

Let's start off by calculating the revenue (the amount they get when they sold the stock) 200*66=13200

Now we need to calculate the cost

40+50+200(.32+.25+58)=11804

13200-11804=1396

Answer:C is correct

Step-by-step explanation:

200*58= 11600

Commission = 40+ (200*0.25)

Commission = 90

Total = 11690

Sell

200*66= 13200

Commission 50+ (0.32*200)

Commission = 114

Sell for 13200-114 = 13086

Profit = 13086 - 11690

Profit = 1396

It is helpful

Answer:

193 i think

Step-by-step explanation:

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Answer:

R=9.5

Step-by-step explanation:

If anyone could pls do this for me  

https://brainly.com/question/23716720

Answer:

Radius(r) = 9.5 cm

Happy learning!

Applepi101

Answer:

Your answer should be A because that is the only one that multiplies them all by 11

HOPE THIS HELPS

-Todo ❤️

Step-by-step explanation:

Answer:

G maybe?

Step-by-step explanation:

Answer:

circumference of a circle :

                      [tex]2\pi r\\[/tex] = 2 π x 6 = 12π inches

Answer:

its 420

Step-by-step explanation:

420+69+69=420

Answer:

X=90

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

9514 1404 393

Answer:

  $3400

Step-by-step explanation:

The way these tax tables are structured, you pay 3% on the first $10,000, 5% on the next $40,000, and 5.5% on the remaining $20,000 above $50,000.

tax = 0.03·10,000 +0.05·(50,000 -10,000) +0.055·(70,000 -50000)

  = 300 + 2000 +1100

  = 3400 . . . dollars

The tax owed on $70,000 is $3,400.

_____

Additional comment

I like to rewrite this sort of table to a different format:

For an income of $70,000, the tax computation using this form is one multiplication and one addition, rather than 3 multiplications and 4 additions as used when navigating the given table.

Who is her and in what context but it takes me 40 minutes

Answer:

0

Step-by-step explanation:

first you will need to know the negative angle identities, which show that cot(-x)=-cot(x), you can then simplify that to -(cos/sin) so when you multiply by sin(x), or sin(x)/1, the sines cancel out and you are left with -(cos(x)/1)*(1/1) so your equation is now -cos(x)=-cos(x), so when you add the cosines over, you get zero

Answer:

not sure but I think its 7

Step-by-step explanation:

2+6+7+9+9+9=42

42÷6=7

Answer:

136

Step-by-step explanation:

(4+6+7)/(7-4) × 24

= 17/3 × 24 = 136

Answer:

Answer:136

Suzanne=4/17

Archie=6/17

Frankie=7/17

Frankie-suzanne

(7-4)/17

3/17-----24

1/17------8

Total number of sweets=17/17

=8×17=136

61% confidence level would produce the widest interval since it is the highest.

Z score is used to determine by how many standard deviation the raw score is above or below the mean.

Confidence interval is given by: mean ± margin of error

The margin of error is given by: [tex]z_\frac{\alpha }{2}* \frac{standard\ deviation}{\sqrt{sample\ size} }[/tex]

The confidence interval is dependent on the margin of error which also depends on the z score of the confidence level, hence the interval increases as the confidence level increases.

61% confidence level would produce the widest interval since it is the highest.

Find out more on Confidence interval at: https://brainly.com/question/15712887

Answer:

[tex]p(0,4)~Q(-3,0)[/tex]

Step-by-step explanation:

[tex]a) 4x+3y=12[/tex]

[tex]4(0)+3y=12[/tex]

[tex]3y=12[/tex]

[tex]y=4[/tex]

[tex]P(0,4)[/tex]

--------------

[tex]4x+3=12[/tex]

[tex]4x+3(0)=12[/tex]

[tex]4x=12[/tex]

[tex]x=3[/tex]

[tex]Q(-3,0)[/tex]

---------------------------

hope it helps...

have a great day!!!

Answer:

p(0, 4)  Q( -3 ,0)

Step-by-step explanation:

hope it helps you