I'll give u 50 POINTS and mark u brainliest if answer this asap

Answer:

Elementary students should be token off

If its not right please do not report.

Answer:

x= 6°

Step-by-step explanation:

∠DEF +∠EFD= ∠EDG

(ext. ∠= sum of int. opp ∠s)

9x +7° +70°= 21x +5°

21x -9x = 77° -5° (bring x terms to one side)

12x= 72° (simplify)

x= 72° ÷12

x= 6° (simplify)

Answer:

add to eliminate y

Step-by-step explanation:

Because the one y is negative, you would add it to the positive y to eliminate both. A positive plus a negative is the same as subtracting from the positive number.

ex: [tex]10+-5=5[/tex] because [tex]10-5=5[/tex]

hope this makes sense :)

Answer:

Add to eliminate y

Step-by-step explanation:

This is because you'll want to add

-4x -9y = 26

8x +9y = -34

to get rid/eliminate the y

The reason why it's not subtract it because the it'll become

-4x-9y=26

-8x-9y=34

which makes the y-values not the reciprocal of each other and you wouldn't be able to eliminate the y.

And it's neither of the add or subtract to eliminate x because the numbers need to be the same numbers and reciprocal of each other

ex:

4 and -4

or

8 and -8

or

-10 and 10

Answer: Mean = 52.8 mins

Step-by-step explanation:

We have lapses of 30 minutes, so we can write the average for each, this means that:

0 < t < 30 can be averaged to the middle of the range: 15 min.

Doing this, we have that:

7 students 15 min

27 students 45 min

12 students 75 min

4 students 105 min.

Now we can calculate the mean:

mean = (x1*n1 + x2*n2 + ...)/N

where x1 is the amount of time 1, and n1 is the number of students associated to that time and so on. N is the total number of students

Mean = (7*15min + 27*45min + 12*75min + 4*105min)/(7 + 27 + 12 + 4)

Mean = 52.8 mins

Answer:

D , H, A, I

Step-by-step explanation:

These are approximates, don't take this to heart.

Brainiest please

Answer:

2

Step-by-step explanation:

2(-1)(-2)(-1)+3(3)-3= 2

Hope this helps you

Answer: D

Step-by-step explanation:

All of it’s angles are equal

Answer: A:Parrallelogram

Step-by-step explanation:

Answer:

A. 15 sq in

Step-by-step explanation:

So it wants to know the area of the yellow face: we have to subtract that chunk cut out of the bottom right from the larger rectangle.

Area = length x width = 4*4 = 16 sq in. This is the area of the larger rectangle.

Area = length x width = 1*1 = 1 sq in. This is the area of the rectangle that's cut out of the yellow area.

16 - 1 = 15 sq in

Answer: i feel like it's 15 length x width x height 4, 8, 12+3=15

Step-by-step explanation:

Answer:

false

Step-by-step explanation:

Answer:

It is false

Hope this helps :)

Please mark me brainliest

Answer:

20..... 1/10

Step-by-step explanation:4x5 equals twenty

2/20 divided by 2 is 1/10

Answer:

P+4=28, meaning that the original perimeter was 24

Step-by-step explanation:

Let's call the perimeter P.

Converting the words into an equation, you get:

P+4=28

Now, you can subtract 4 from both sides:

P+4-4=28-4

P=24

Hope this helps!

Answer:

  empirical rule: 81.5%

  table or calculator: 81.9%

Step-by-step explanation:

The lower limit of the life range of interest has a z-score of ...

  z = (x -μ)/σ = (20,000 -30,000)/5,000 = -2

The upper limit has a z-score of ...

  z = (35,000 -30,000)/5,000 = 1

Empirical rule solution

The empirical rule tells you that 95% of the distribution lies within 2 standard deviations of the mean, so (100% -95%)/2 = 2.5% lie below z = -2. It also tells you 68% lie within 1 standard deviation of the mean, so (100% -68%)/2 = 16% lie above z = 1.

The fraction that lies within -2 to 1 standard deviations of the means is thus ...

  (100% -2.5% -16%) = 81.5%

The probability the tire has a life in the desired range is about 81.5%.

__

Calculator solution

A probability calculator for the Normal distribution tells you that ...

  P(-2 < z < 1) ≈ 0.8185946

The probability the tire has a life in the desired range is about 81.9%.

Congruent sides, so isosceles triangle.  When we have an isosceles triangle the bisector of angle A is a perpendicular bisector of BC with foot D.   So x=ADB=90 degrees.

Angle B is 47 degrees and angle y=BAD is complementary, the other acute angle in a right triangle.

y = 90 - 47 = 43

Answer: x=90, y=43

Answer:

d y = 2x+3

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

Answer:

14.14 ft

Step-by-step explanation:

In an isosceles triangle, the altitude and median is same. So the height divides the base AB equally such that AD = DB = 10, if the height is CD. So using Pythagoras theorem, we can find the hypotenuse AC in triangle ADC.

h² = b² + a²

AC² = AD² + CD²

AC² = 10² + 10²

AC² = 100 + 100

AC² = 200

AC = √200

AC ≈ 14.14 ft

Hope this answer helps you!!

Please mark me as the brainliest!!

Answer:

-5

Step-by-step explanation:

Shown in the attachment.

The remainder when 3x^2 +5x -3 is divided by 3x+2 is -5

Answer:

if this is for edg is a

Step-by-step explanation:

Answer:

Is there multiple choice?

Step-by-step explanation:

Answer:

50+1.99*v=3.99*v= 13 visits

Step-by-step explanation:

The first gym has 50 subrsiption but one visit cost 1.99 while the other cost 3.99 per visit with 13 visits it cost around the same as the 51.99

Answer:

4. 3x=18

Step-by-step explanation:

To find the answer you do 18/3=X, then all you do is turn that division problem into a multiplication problem and get 3x=18

Answer:

3x = 18 (4)

Step-by-step explanation:

If she has a total of 18 apples, and she wants to give her neighbors three apples each, you would have to divide 18 by 3 to find how many neighbors she can give them to.

18 divided by 3 = x

x = 6

Answer: DNA technology in agriculture has been used to create Genetically Modified Organism. The plants can be modified to be resistant to drought and diseases/pests and have increased yield

DNA technology mainly involves the manipulation of the genome of an organism. Usually a foreign DNA is inserted in the genome of another organism to impart it with desired characteristics or remove undesired ones.

Answer:

DNA technology in agriculture has been used to create Genetically Modified Organism

Step-by-step explanation:

Answer:

35 % are herbs

Step-by-step explanation:

7    = 35

20  = 100

Answer: $19.5

Step-by-step explanation:

Hi, to answer this question we have to apply the next formula:

Volume of a rectangular prism = width x length x height

Replacing with the values given:

Since 1= 1/12 foot

36 in /12 = 3 foot  (length and wifth)

4 in /12 = 1/3 foot  (height)

V = 3 x 3 x 1/3 = 3ft3

Next, we multiply it by 2 (since there are 2 sections):

3 x 2 = 6 ft3

Finally we multiply it by the cost of each cubic foot:

6 x 3.25 = $19.5

Feel free to ask for more if needed or if you did not understand something.

Answer:

424

Step-by-step explanation:

pie r squared is area of a circle

21(squared)x3.14=1385

minus this from 24squaredx3.14 =1809

1385-1809=424

The area of the sidewalk is 226.08 m²

Area is defined as the total space taken up by a flat (2-D) surface or shape of an object.

The space enclosed by the boundary of a plane figure is called its area.

The area of a figure is the number of unit squares that cover the surface of a closed figure.

Area is measured in square units like cm² and m².

Given that, a circular flower bed is 21 m in diameter and has a circular sidewalk around it that is 3 m wide. We need to find the area of the sidewalk.

To find the same, we will subtract the area of the inner circular region from  the outer circular region,

The radius of the outer circular region = 21/2+3 = 10.5+3 = 13.5 m

The area of the sidewalk = πR²-πr², where R = radius of outer region and r = radius of inner region

= 3.14(13.5²-10.5²)

= 3.14 x 72

= 226.08 m²

Hence, the area of the sidewalk is 226.08 m²

Learn more about area, click;

https://brainly.com/question/27683633

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Answer:

x = 1 + i, x = 1 - i

Step-by-step explanation:

Make the second equation y = 3x - 1

Substitute: 3x - 1 = 1/2x^2 + 2x

Simplify: 6x - 2 = x^2 + 4x

x^2 + 4x + 2 = 6x

x^2 - 2x + 2 = 0

Complete the square: x^2 - 2x + 1 = - 1

(x - 1)^2 = -1

x - 1 = ± √-1

Take out the negative: x - 1 = ± i

x = 1 + i, x = 1 - i

i is for imaginary number

Answer: (0,-1) and (2,5) for the answers.

Step-by-step explanation:

Can someone please answer my question from my profile please thank you

Answer:

Your Answer Is C!

Step-by-step explanation:

I hope this helps!

Brainliest!

Answer:

b=3

Step-by-step explanation:

2a=3b and 4a+b=21,

Multiply the first equation by 2

2(2a) = 2*3b

4a = 6b

Substitute this into the second equation

4a+b = 21

Replace 4a with 6b

6b+b = 21

Combine like terms

7b = 21

Divide each side by 7

7b/7 = 21/7

b = 3

Answer:

50%

Step-by-step explanation:

For each line it represents 25% so half of the data is on the opposite side of 60.