x-3= 0 and 4x+2y-1= 0​

Answer:

angle 7and 8

angle 9 and 6

Step-by-step explanation:

Answer:11

Step-by-step explanation:

Answer:

82

Step-by-step explanation:

... 73, 76, 79, 82, 85, 88, 91 ...

Answer:

This would equal sec (B)

Step-by-step explanation:

Answer:

54/120

Step-by-step explanation:

Ratio to 54 seconds to 2 minutes is 9 : 20

Find:

Ratio to 54 seconds to 2 minutes

Computation:

We know that,

1 minutes = 60 second

So,

2 minutes = 120 second

Ratio to 54 seconds to 2 minutes = 54 / 120

Ratio to 54 seconds to 2 minutes = 27 / 60

Ratio to 54 seconds to 2 minutes = 9 : 20

Find out more information about 'Ratio'.

https://brainly.com/question/1504221?referrer=searchResults

Answer:

sorry i did my math wrong its...I think its 84 meters

Answer:

I think c, - 1.8 is the answer

-1.6 (c)

My reasoning behind this is that the number would be logical considering the fact that the point is close to 0. Also, I ruled out the other choices, and here's how I did it:

I know that A is not the answer because that would make it farther back on the number line and the point B is closer to 0 than it is to 3.8 so, I know that A is not correct.

I know that B is not the answer because -5.23 would be farther behind point A which rules it out entirely.

I know that D is not the answer because 0.1 would be right after point c (0) meaning that the point can be ruled out right away.

That leaves the only logical answer to be C because it is closer to 0 but still in between points A and B.

Hope this helps and have a nice day.

-R3TR0 Z3R0

I got you bro!

Answer:

{x,y} = {4-1}

You might be wondering how I got this, well here are the steps:

System of Linear Equations entered :

  [1]    2x + y = 7

  [2]    x - 2y = 6

Graphic Representation of the Equations :

   y + 2x = 7        -2y + x = 6  

Solve by Substitution :

// Solve equation [2] for the variable  x  

 [2]    x = 2y + 6

// Plug this in for variable  x  in equation [1]

  [1]    2•(2y+6) + y = 7

  [1]    5y = -5

// Solve equation [1] for the variable  y  

  [1]    5y = - 5

  [1]    y = - 1

// By now we know this much :

   x = 2y+6

   y = -1

// Use the  y  value to solve for  x  

   x = 2(-1)+6 = 4

Solution :

{x,y} = {4,-1}

I hope this has helped you and have a wonderful day!

Answer:

The initial mass of the sample was 16 mg.

The mass after 5 weeks will be about 0.0372 mg.

Step-by-step explanation:

We can write an exponential function to model the situation.

Let the initial amount be A. The standard exponential function is given by:

[tex]P(t)=A(r)^t[/tex]

Where r is the rate of growth/decay.

Since the half-life of Palladium-100 is four days, r = 1/2. We will also substitute t/4 for t to to represent one cycle every four days. Therefore:

[tex]\displaystyle P(t)=A\Big(\frac{1}{2}\Big)^{t/4}[/tex]

After 12 days, a sample of Palladium-100 has been reduced to a mass of two milligrams.

Therefore, when x = 12, P(x) = 2. By substitution:

[tex]\displaystyle 2=A\Big(\frac{1}{2}\Big)^{12/4}[/tex]

Solve for A. Simplify:

[tex]\displaystyle 2=A\Big(\frac{1}{2}\Big)^3[/tex]

Simplify:

[tex]\displaystyle 2=A\Big(\frac{1}{8}\Big)[/tex]

Thus, the initial mass of the sample was:

[tex]A=16\text{ mg}[/tex]

5 weeks is equivalent to 35 days. Therefore, we can find P(35):

[tex]\displaystyle P(35)=16\Big(\frac{1}{2}\Big)^{35/4}\approx0.0372\text{ mg}[/tex]

About 0.0372 mg will be left of the original 16 mg sample after 5 weeks.

Given:

The measure of three sides of a triangle are 8, 7 and 14.

To find:

The measure of the angle opposite the side of length 8.

Solution:

According to the Law of Cosine:

[tex]\cos A=\dfrac{b^2+c^2-a^2}{2bc}[/tex]

Let a=8, b=7 and c=14, then by using Law of Cosine, we get

[tex]\cos A=\dfrac{7^2+14^2-8^2}{2(7)(14)}[/tex]

[tex]\cos A=\dfrac{49+196-64}{196}[/tex]

[tex]\cos A=\dfrac{181}{196}[/tex]

Taking cos inverse on both sides.

[tex]A=\cos^{-1}\dfrac{181}{196}[/tex]

[tex]A=22.561328[/tex]

[tex]A\approx 22.6[/tex]

Therefore, the measure of the angle opposite the side of length 8 is 22.6 degrees.

Answer:

1 in 3 chance.

Step-by-step explanation:

the numbers 3, 6, 9, and 12 can all be divided by 3 and that's 4 out of the 12 numbers, and that's 1/3 simplified.

Answer:

These are confusing Beth , b/c you have to remember that they will add to 100%

Step-by-step explanation:

so

green = 3*  yellow

100% = green + yellow + 35% + 25%

100% = 3* yellow + yellow +60%

40% = 4* yellow

10% = yellow

30% = green

there are 14 purples in the bag , which is 35% of total

14/.35 = 40

there are a total of 40 pins

so

4    are yellow  (10% of 40  or 40* 0.1)

12 are green    (30% of 40  or 40*0.3)

14  are purple  (35% of 40 or 40*0.35)

10  are grey  (25% of 40  or 40*0.25 )

see?  : |

Answer:

a. h = A/w = 2 ³/₄ ft

b. A'/A = 2/3

Step-by-step explanation:

a. What is the total height of the wall? Write an equation to represent the situation. Then solve.

The wall is a rectangle and its area is A = wh where w = width and h = height of wall.

Making h subject of the formula,

h = A/w

Now, Since the area of the retaining wall, A is 23 ³/₈ ft² and its width is the length of the portion of the wall which is brick w is 8 ¹/₂ ft, then

h = A/w

= 23 ³/₈ ft² ÷ 8 ¹/₂ ft

= 187/8 ft² ÷ 17/2 ft

= 187/8 ft² × 2/17 ft

= 187/4 ft² × 1/17 ft

= 187/68 ft

= 2 ³/₄ ft

b. If the area of the brick portion of the wall is 15(7/12), what fraction of the wall is brick? Write an equation to show your work.

Since the area of the brick portion of the wall is A' = 15 ⁷/₁₂ ft²  and the total are of the retaining wall is A =  23 ³/₈ ft²

The fraction of the wall that is brick = A'/A

= 15 ⁷/₁₂ ft² ÷ 23 ³/₈ ft²

= 187/12 ÷ 187/8

= 187/12 × 8/187

= 8/12

= 2/3

Answer with Step-by-step explanation:

a) 2 3/4 ÷ 3 = 11/12 feet

11/12 + 11/12 = 1 5/6

Or, you could write an algebraic equation:

2 3/4 ÷ 3 = x.  (3x = 2 3/4)

x = 11/12

The height of the brick proportion of the wall is 1 5/6

b)

You know that 8 x 2 is 16. Well, you already know that the whole total of fractions, multiplied together, would probably be less that 1 and less than 1/2.

So, your rounded answer should be 16. Or 16 1/2

c)  

Area = 8 1/2 x 2 3/4.

Use Distributive Property to solve the area.

(8 x 2) + (3/4 x 1/2) = x

8 x 2 = 16

3/4 x 1/2 = 3/8

16 + 3/8 = 16 3/8

x = 16 3/8

I think my answer is reasonable because I estimated 16, and 1/2. 3/8 is close to 1/2. That's why my answer is reasonable.

-kiniwih426

Answer:

43/36 or 1 7/36

Step-by-step explanation:

Answer:

option C is correct answer of this question

x is grater than or equal to 55.25

hope it helps

Answer:

C

Step-by-step explanation:

8x≥442

x≥55.25

greater than or equal

3x-2y+4z-x+5y+3x-2y+4z-x+z

First, reorder(I put the like terms in parenthesis to help you see the work better).

(3x+3x-x-x)+(5y-2y-2y)+(4z+4z+z)

Now, we add/subtract like terms.

(6x-2x)+(5y-4y)+(8z+z)

Lastly, we combine.

4x+y+9z

---

hope it helps

Answer: D

Step-by-step explanation:

Answer:

Kindly check explanation

Step-by-step explanation:

Given the data:

85, 91, 83, 78, 79, 64, 81, 97

Ordered data : 78, 79, 81, 83, 85, 91, 97

Mean:

Σx / n =

n = sample size = 8

(64+78+79+81+83+85+91+97) / 8

= 658 / 8

= 82.25

Median = 1/2(n+1)th term

1/2(8+1)th term = 1/2 * 9 = 4.5th term

(4th term + 5th term) /2 = (81 + 83) / 2 = 82

Mode = 85, 91, 83, 78, 79, 64, 81, 97

Outlier:

Lower = Q1 - 1.5(IQR)

Upper = Q3 + 1.5(IQR)

Using a calculator :

Q1 = 78.5 ; Q3 = 88 ;

IQR = (Q3 - Q1)

(88 - 78.5) = 9.5

Outlier :

78.5 - 1.5(9.5) = values < 64.25

88 + 1.5(9.5) = values > 102.5

Hence. Outlier is 64

Removing the Outlier :

Data = 78, 79, 81, 83, 85, 91, 97

Mean = 84.85

Median = 83

Based on the result, the median is the best measure of central tendency for the data:

Answer:

2.954545454

Step-by-step explanation:

65/22 = 65 divided by 22. That is how many times 22 can go into 65

A decimal number has a decimal point in it. That is a whole number and some fraction that could be in tenths or otherwise.

65 is the numerator,

22 is the denominator

Using a calculator

65/22 = 2.9545454

Answer:

It is better to buy 20 g of flour 3 for 3.50

Step-by-step explanation:

It is given that 20g of 3 for 3.50

It means 3 packets of 20 g is 3*20 =60

So, 60g  is for 3.50

So, 1 g =[tex]\frac{3.5}{60}[/tex]=0.05833 per gram.

Now, let's find unit rate for 40 g of 2 for 9.

2 packets of 40 gram = 2* 40 =80 grams

So, 80 grams costs 9

So, 1 gram =[tex]\frac{9}{80}[/tex] =0.1125

So, it is better to buy 20 g of flour 3 for 3.50

Answer:

C ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀

Answer:

$0.6

Step-by-step explanation:

1. 4.2 per 7 pounds

4.2 / 7 = 0.6

Answer:

3.84, and lower. These are correct

Step-by-step explanation:

I did the test but I am not sure which is the answer for the first one. It’s is NOT 2.6

Answer:first blank is 2.2

Step-by-step explanation:

you find the mean of the data which is 8. Then you subtract every data point from 8, add them up and find the mean of the new numbers,

Answer:

Trapeziod, or Quadaraterial (cheeky)

Trapezoid formula: height times sum of top and bottom times 1/2

17-9=8(height)

25-5-3=17(bottom)

8 times (11+17) times 1/2=112(area)

Answer:

41. f⁻¹(x) = -9x + 4

43. m⁻¹(x) = ∛(x-2)/4  

Step-by-step explanation:

41. y = (4-x)/9

swap x and y: x = (4-y)/9

solve y: 9x = 4-y

             y = -9x + 4

45. y = 4x³+2

     x = 4y³+2

     4y³ = x-2

     y³ = (x-2)/4

     y = ∛(x-2)/4

Let you do 42 and 46 by yourself