I need help with this question u don’t understand how to do it

Answer: x=-3 and y= -15

Step-by-step explanation: 1 Substitute y=5xy=5x into 4x-2y=184x−2y=18.

-6x=18

−6x=18

2 Solve for xx in -6x=18−6x=18.

x=-3

x=−3

3 Substitute x=-3x=−3 into y=5xy=5x.

y=-15

y=−15

4 Therefore,

\begin{aligned}&x=-3\\&y=-15\end{aligned}

​

x=−3

y=−15

​

Answer: The answer would be x=3 43- 35 =18

Step-by-step explanation:

Answer:

1/9

Step-by-step explanation:

=3/9 -2/9 =1/?

=3-2/9 =1/?

=1/9 .

I hope it helps u

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thank you

Answer:

X=90

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

Answer:

PLEASE GIVE ME BRAINLIEST.

AND HOPE IT HELPS YA MATE!

Answer:

-2/3x

hope this helps

have a good day :)

Step-by-step explanation:

9514 1404 393

Answer:

  (d)  a translation of 6 units down, a rotation, and then a reflection

Step-by-step explanation:

Dilation by any scale factor other than 1 will prevent the original being congruent with its image. The only answer choice with no dilation is the one shown above.

Answer:

The largest steep increase was from 1965 to 1966, while the second largest was from 1967 to 1968

Step-by-step explanation:

A) 1965 to 1966; number of accidents increased from 250 to 320.

Percentage increase = (320 - 250)/250 × 100% = 28%

B) 1967 to 1968; number of accidents increased from 300 to 370.

Percentage increase = (370 - 300)/300 × 100% = 23.33%

C) 1968 to 1969; number of accidents increased from 370 to 380.

Percentage increase = (380 - 370)/370 × 100% = 2.7%

D) 1969 to 1970; number of accidents increased from 380 to 410.

Percentage increase = (410 - 380)/380 × 100% = 7.89%

Thus;

The largest steep increase was from 1965 to 1966, while the second largest was from 1967 to 1968

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:

circumference of a circle :

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

Answer:

Not independent

Step-by-step explanation:

Given

See attachment for two way table

Required

Are male and favor independent?

From the table, we have:

[tex]Male = 20+15+17[/tex]

[tex]Male = 52[/tex]

[tex]Favor = 20 + 18[/tex]

[tex]Favor = 38[/tex]

[tex]Total = 20+15+17+18+12+7[/tex]

[tex]Total = 89[/tex]

Calculate P(Male)

[tex]P(Male) = \frac{Male}{Total}[/tex]

[tex]P(Male) = \frac{52}{89}[/tex]

Calculate P(Favor)

[tex]P(Favor) = \frac{Favor}{Total}[/tex]

[tex]P(Favor) = \frac{38}{89}[/tex]

Calculate P(Male and Favor)

[tex]P(Male\ and\ Favor) = \frac{Male\ and\ Favor}{Total}[/tex]

[tex]P(Male\ and\ Favor) = \frac{20}{89}[/tex]

[tex]P(Male\ and\ Favor) = 0.2247[/tex]

The events are independent is:

[tex]P(Male\ and\ Favor) =P(Male) * P(Favor)[/tex]

So, we have:

[tex]P(Male\ and\ Favor) =\frac{52}{89} * \frac{38}{89}[/tex]

[tex]P(Male\ and\ Favor) =\frac{52*38}{89*89}[/tex]

[tex]P(Male\ and\ Favor) =\frac{1976}{7921}[/tex]

[tex]P(Male\ and\ Favor) =0.2495[/tex]

By comparison:

[tex]P(Male\ and\ Favor) =0.2495[/tex] and [tex]P(Male\ and\ Favor) = 0.2247[/tex] are not equal

Hence, the events are not independent

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:

1) List the coordinates ΔABC

2) State the rule of dilation

3) Apply the rule:

Ans: A´(6,6) B´(12,18)C´(18,6)

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

hope it helps...

have a great day!!

Answer:

A(6,6) B(12,18)C (18,6)

Step-by-step explanation:

hope it helps you...

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.

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:

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

Step-by-step explanation:

sorry these is notr qoustoin:(

Answer: X=1

Step-by-step explanation:

trust me i had this same question, thats correct

R = 10.5

Step-by-step explanation:

Using Pythagorean theorem, we can write

(OM)^2 + 10^2 = (OR + 4)^2

Since OM = OR, let's call this segment R for brevity.

R^2 + 10^2 = (R + 4)^2

R^2 + 100 = R^2 + 8R + 16

This simplifies to

8R = 84

or R = 10.5

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:

G maybe?

Step-by-step explanation:

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

Answer:

B. x-2=1

Step-by-step explanation:

3-2=1

1=1

Answer:

x = 3 is a solution for x - 2 = 1.

Step-by-step explanation:

Substitute x = 3 in all the equations.

x + 7 = 4

3 + 7 = 4

10 ≠ 4

x - 2 = 1

3 - 2 = 1

1 = 1

5 + x = 9

5 + 3 = 9

8 ≠ 9

8 - x = 11

8 - 3 = 11

5 ≠ 11

Answer:

5

Step-by-step explanation:

Mark brainliest

Answer:

Explanation:

given:

6, 4, 1, 9, 3, 8, 3, 5, 10

so let's sort it first:

1, 3, 3, 4, 5, 6, 8, 9, 10

the Median is the middle of a sorted list of numbers, and it's 5 in this case

(It doesn't matter that some numbers are repeated in the list)

Answer:

its 420

Step-by-step explanation:

420+69+69=420

Answer:

(⊙_⊙;)

¯\(°_o)/¯

(°ー°〃)

Step-by-step explanation:

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:

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:

0.9938

Step-by-step explanation:

Let mean blood pressure be = x

Pr ( x < 119 ) can be found using ' z value ' = ( x - u ) ÷ ( s / √n ) ; where                x = 119 , u = mean = 117 , n = no. of sample items = 144 , s = standard deviation = 9.6

z = (119 - 117) ÷ (9.6 / 144) = -2 ÷ (9.6 / 12)  = -2 / 0.8 → z = 2.5

Pr (x < 119) = P (z <  2.5)

P = 0.9938