Mathematics High School

Find the value of X.

Answers

Answer 1

Answer:-

x=110 degree

Step-by-step explanation:

It's quadrilateral so it's total sum degree is 360

then 40+82+128+x=360

360-(128+82+40)=X

x=360-250

x=110 degree

Related Questions

The fourth term in an arithmetic sequence is 18 and the seventh term is 39. If the first term is a1 , which is an equation for the nth term of this sequence?

Answers

Answer:

aₙ = 7n - 10

Step-by-step explanation:

The nth term: [tex]a_n=a_1+d(n-1)[/tex]

So:

a₄ = a₁ + 3d

18 = a₁ + 3d ⇒ 3d = 18 - a₁

a₇ = a₁ + 6d

39 = a₁ + 6d

39 = a₁ + 2(18 - a₁)

39 = a₁ + 36 - 2a₁

39 = 36 - a₁

a₁ = -3

3d = 18 - (-3)

3d = 21

d = 7

So the nth term:

[tex]a_n = -3 + 7(n-1)\\\\a_n=-3 +7n - 7\\\\a_n = 7n - 10[/tex]

What is the percent change? Original cost is $15 and the new cost is $70.

Answers

Answer:

467 percent

Step-by-step explanation:

Answer:

366.67% increase

Step-by-step explanation:

HALP ME PLZZ ASAP NO LINKS

Answers

Answer:

Step-by-step explanation:

1. 28, 48 and 72 are three
number

c) Determine H.C Fof the
three numbers by using
prime factors.
S
#he

Answers

Answer:

Step-by-step explanation:

28 = 2*2*7

48 = 2*2*2*2*3

72= 2*2*2*3*3

So the HCF = 2*2 = 4.

Answer:

hcf stand's for

highest common factor

and must be prime numbers

so the answers 3

plz help plz help its not a lot

Answers

Answer:

Option A) 7 inches

Step-by-step explanation:

t=0

so d= -0.5(0)+7

so d= 7 inches

hope it helps

have a great day!!

The probability of choosing a blue marble from a bag is 5/12 and a yellow marble 1/3. What is the probability of not choosing one of these marbles?

Answers

Answer:

1/20

Step-by-step explanation:

Simple probability is found by counting all the results which fit requirements and dividing by all possible results.

To find probability of two results in a row, multiply chance of first result by chance of second result.

Since you are replacing the marble before the second draw, we don’t have to figure out the various changes in odds for the different possible first draws. It’s just that simple.

There are 5 black marbles

There are 4 red marbles

There are always 20 marbles in all

5/20*4/20=1/4*1/5=1/20

By coincidence, the same as the chance of drawing the white marble in one draw.

Which algebraic expressions are binomials? Check all that apply. xy x2y – 3x 6y2 – y y2 + 4xy – x2 +

Answers

Answer:

4xy are binomials because it only had one term

Answer:

the answers are B, C, E

Step-by-step explanation:

x2y – 3x

6y2 – y

4xy – two-fifths

can sombody help me plz i got 5 min left

Answers

Answer:

$46.25 ÷ $9

Step-by-step explanation:

Does the following infinite series converge or diverge? 1/3+2/9+4/27+8/81

Answers

Answer:

converge

Step-by-step explanation:

The ratio that you multiply by to get the next term is 2/3, which is less than 1, so the geometric series converges by the Geometric Series Test.

Answer:

Converge

Step-by-step explanation:

The value of r in this infinite series is 2/3.

If the absolute value of r is less than 1, then the infinite series converges.

Since 2/3 is less than 1, the series must converge.

Please help I’ll make you the brainiest

Answers

Answer:

m=1 or m=-3

Step-by-step explanation:

when m=1,

(1+1)sq+1=5

4+1=5

5=5

True statement

when m=-3,

(-3+1)sq+1=5

(2)sq+1=5

4+1=5

5=5

True statement

(-4y^2– 3y - 10)-(-2y + 1) add or subtract the polynomials

Answers

Answer:

Simplified : -4y^(2)-y-11

Step-by-step explanation:

My bad if its wrong hope this helps tho

The diameter of a circle is 10 m. Find its area to the nearest tenth.

Answers

Answer:

78.5

Step-by-step explanation:

A=pi x r^2

A= 3.14 x 5 x 5

A=78.5

The mean is 80, the standard deviation is 5. What number is 2.5 standard deviations above the mean? It is a normal distribtion.

Answers

Answer:

So the final answers would be (90 > z)-P(80<z) = .47725 or 47.725%

Step-by-step explanation:

Calculate the side lengths a and b to two decimal places.

O A. a = 2.55 and b = 2.43
O B. a = 15.09 and b = 15.81
O c. a = 2.43 and b = 2.55
O D. a = 15.09 and b = 16.75
E. a = 15.81 and b = 15..09

Answers

Answer:

Step-by-step explanation:

pls help me answer this and if you don't know, pls don't answer.

Answers

Answer:

Step-by-step explanation:

Which of the following is always true about lines of symmetry?

A line of symmetry divides a shape into two equal parts.
A line of symmetry is a vertical line through the middle of a figure.
A figure can have only one line of symmetry.
A line of symmetry goes through opposite vertices of a figure.

Answers

1 2 and 4. it won’t let my answer be that short

The perimeter of one square is given as 4x. Its perimeter is equal to the perimeter of a rectangle given as 2.5x + 3.75. Write an equation to determine the perimeter of each figure

Answers

Answer:

Step-by-step explanation:

it would be 5. x is 5 so if it is wrong sorry its best e a while since i done that kind of math

Linear equation in slope intercept form

Answers

Answer:

y = 2x + 24

Step-by-step explanation:

Slope-intercept form equation => y = mx + b

m = slope = change in y / change in x

b = y-intercept

✔️using two pairs of values form the table, (-6, 12) and (-5, 14):

Slope (m) = (14 - 12)/(-5 -(-6))

m = 2/1

m = 2

✔️To find b, substitute (x, y) = (-6, 12) and m = 2 into y = mx + b.

12 = 2(-6) + b

12 = -12 + b

12 + 12 = b

24 = b

b = 24

✔️To write the equation, substitute m = 2 and b = 24 into y = mx + b:

y = 2x + 24

After eight games the team has won two games lost five and tied one if there season is 24 games how many games will they win at this rate

Answers

120 games in total for the games played

Answer:

Since the games in total add up to 8, we see that 8 is a factor of 24. It goes in 3 times. Therefore, we have to multiply everything by 3 to get the answer out of 24. There will be 6 wins, 15 losses and 3 tie. That adds up to 24.

What is the surface area of the pyramid? 3 6

Answers

Answer:

3 is the answer bc it make more sense

last question (arc length and area) thanks!!!

Answers

Answer:

[tex]m\angle ABC=60\textdegree[/tex]

Step-by-step explanation:

[tex]m\angle ABC=360-90-90-m\angle AOC\\=180-120\\=60\textdegree[/tex]

What two numbers have a product of -22 and a sum of -9?

Answers

-11 and 2, hope this answer helped you!

√131 is between 11 and 12? true or false

Answers

True
11 is √121
12 is √144
So √131 is in between 11 and 12

Answer:

True

Step-by-step explanation:

[tex]11^2=121\\12^2=144\\121<131<144[/tex]

Hence, [tex]\sqrt{131}[/tex] is in between 11 and 12

a parallelogram has one angle that measures 40 what are the measures of the other three angles in the parallelogram

Answers

Answer:

40°, 140°, and 140°

Step-by-step explanation:

PLEASE HELP ASAP FAST ASAP

Answers

Answer:

mike did i think im super sooooo sorry if im wrong

Step-by-step explanation:

Can someone plz help with this problem??

Answers

Answer:

17,2

Step-by-step explanation:

X = 21×cos35° = 21 × 0,82 = 17,20

75in, 60 in Pythagorean
What’s the missing leg?

Answers

Answer:

X = 45

Step-by-step explanation:

a^2 + b^2 = c^2

60^2 + a^2 = 75^2

3,600 + a^2 = 5,625

- 3,600 - 3,600

____________________

a^2= 2025

square root them

a^2 = a

2025 = 45

so x =45

I’m really struggling here :,D

Answers

Answer:

-2

Step-by-step explanation:

Can someone please help me?

Answers

Answer:

A=90

B=18

C=111

D=39

E=35

Step-by-step explanation:

Divide €132 in the ratio 7:4

Answers

Answer:92.4

Step-by-step explanation:

4x+7x=132

10x=132

x=132/10

x=13.2

4x=4×13.2

=52.8

5x=7×13.2

=92.4

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