I need help,please help me.​

Answer:

40%

Step-by-step explanation:

Answer:

x = 30

2x = 60

Step-by-step explanation:

2x + x = 90

3x = 90

x = 30

2(30) = 60

Answer:

Step-by-step explanation:

Let the angles of quadrilateral be

x, 2x, 3x , 4x

sum of all angles of quadrilateral = 360°

x + 2x + 3x + 4x = 360°

10x = 360°

x = 360/10 = 36°

Ans. the four angles are :-

x = 36°

2x = 2 × 36 = 72°

3x = 3 × 36 = 108°

4x = 4 × 36 = 144°

Answer:

Step-by-step explanation:

Let the angles of quadrilateral be

x, 2x, 3x , 4x

sum of all angles of quadrilateral = 360°

x + 2x + 3x + 4x = 360°

10x = 360°

x = 360/10 = 36°

Ans. the four angles are :-

x = 36°

2x = 2 × 36 = 72°

3x = 3 × 36 = 108°

4x = 4 × 36 = 144°

Answer:

pretty sure your answer is C.y=-6x+18

Step-by-step explanation:

Answer:

Mean-19

Mode-28

Median-18

Step-by-step explanation:

Adding a number to the set such that the number is further away from the mean, will increase the SD. This is because the average distance of the numbers from the mean increases.

The Standard Deviation will increase if a new number is added to the collection that deviates more from the mean. This is due to an increase in the standard deviation of the numbers.

The standard deviation demonstrates how widely things vary or diverge from the mean (mean, or expected value).

The Standard Deviation will vary if all terms in the set are multiplied or divided by the same number. The Standard Deviation will vary by the same amount.

The same number will likewise be changed for the mean. Imagine an animated, proportionate size growth for the spatter. There will be a change in the "measure of spread". The distance between each term and the mean doubles if every term is doubled, but the distance between each term also doubles, increasing the standard deviation. The Standard Deviation gets smaller if each word is divided by two.

In general, the Standard Deviation is decreased when a new number is added to the set that is extremely close to the mean. Visualize the paint spatter on the wall. Would the dispersion be more or smaller if we paint a droplet extremely near the center? – decrease because there are now relative to before more droplets at the center.

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Answer: I dont know if that is an "I" or a "1" but if it is an "I" the answer is "16-3i" but if is a "1" its 7

Step-by-step explanation:

Answer:

Step-by-step explanation:

1  Yes they are right angles, it is a right angle because you solve it with a Sine equation

2 the hypotenuse is the longest side

3.  If the squares of the two shorter sides add up to the square of the hypotenuse, the triangle contains a right angle.

Answer:

S(n)=(25/3)n(n+1)(2n+19)

Step-by-step explanation:

sum_(n=1)^k n (6 + n) = 1/6 k (k + 1) (2 k + 19)

[tex]sum_(n=1)^k n (6 + n) = (1/6) k (k + 1) (2 k + 19)\\50(1/6) k (k + 1) (2 k + 19)\\=(25/3)k (k + 1) (2 k + 19)[/tex]

This is the equation in general:

substitute n for sum from 1 to n

For sum from k to n, substitute:

S(n)-S(k-1)

Answer:

Part 1: B and D

Part 2: C

Part 3: 50575

Step-by-step explanation:

Answer:

16 = 3x

Step-by-step explanation

Find the diagram attached.

Perimeter = sum of all its sides

Sum of all its sides= x+x+x

Sum of all its sides = 3x

Given perimeter = 16in

Equating both;

3x = 16

x = 16/3

x = 5.33in

Hence the value of x is 5.33 and the required equation is 16 =3x

Answer:

No

Step-by-step explanation:

(4, 10)

y ≤ 2x + 1

To determine if (4, 10) is a solution to the inequality, we want to plug in the given values.

10 ≤ 2(4) + 1

[multiply] 10 ≤ 8 + 1

[add] 10 ≤ 9

Determine if this statement is true.

10 is greater than 9; therefore (4, 10) is not a solution to this inequality.

Hope this helps!

Answer:

No

Step-by-step explanation:

If you plug in 10 for y and 4 for x, you will get 10 ≤ 9 which is false.

Answer: multiply

Step-by-step explanation:

Answer:

21 red

Step-by-step explanation:

84 x 0.25 = 21

Answer:

21

Step-by-step explanation:

25% is basically 1/4.

Divide 84 by 4.

Are you sure you're old enough to be on brainly?

Answer:

x = 11

y = 1

Step-by-step explanation:

N : M

8 : 1

8 N = 1 M

since there is 1 M per every 8 N, y would be 1

to find x, just take 88 and divide it by 8 to get 11

Answer:

[tex] - \frac{1}{2} [/tex]

its down 1 over 2 each time

Answer:

A, B and E

Step-by-step explanation:

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

From the given graph we have the correct statements are A, B and E.

We have given that,

The scatter plot shows the relationship between ice cream sales and temperature at noon on that day at the seaside ice cream shop.

We have to determine the statements are correct.

A scatter plot is a type of plot or mathematical diagram using Cartesian coordinates to display values for typically two variables for a set of data. If the points are coded, one additional variable can be displayed.

From the given graph we have the correct statements are A, B and E.

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Answer:

y=72

Step-by-step explanation:

k= xy          [ inverse variation]

k= 12 x 54

 = 648

k= xy

648=9y

y = 648/ 9 = 72

I hope im right!!

8^2 +2^2 is 68 because you only square the integer. In (8 + 2)^2, you square the product of the equation.

Answer:8^2+2^2=68 and (8 + 2)^2=100

Step-by-step explanation:

8^2+2^2

=64+2^2

=64+4

=68

(8+2)^2

=10^2

=100

Answer

516,901

Step-by-step explanation:

36,700/7.1%

you have to change the 7.1% to a decimal so its now

36,700/0.071= 516,901.4084507

round it to the nearest whole number is 516,901

Answer:

4 8/15

Step-by-step explanation:

The rule is subtract 1 2/6 from the number (n):

(in equation)   x = n - 1 2/6

Answer:

C. : 5t

--

Once we find out the number of tables at the reception, we can then multiply the number of tables to 5t.

Answer:

x = -411

Step-by-step explanation:

Number = x

Quotient of  a number and 3 : [tex]\frac{x}{3}[/tex]

(x/3) increased by (-7) : [tex]\frac{x}{3}+ (-7)[/tex]

[tex]\frac{x}{3} -7 = - 144\\\\\frac{x}{3}= -144 + 7\\\\\frac{x}{3}= -137\\\\x = -137*3[/tex]

x = - 411

Answer:

-411

Step-by-step explanation:

x / 3 + -7 = -144

x / 3 = -144 + 7

x = -137 x 3

x = -411

Hope that helps!

Answer:

$30

Step-by-step explanation:

s = shorts

t = tshirts

s + 2t = 60

s + 3t = 75

s + 2t = 60

rewrite

   -2t     -2t

s = 60 - 2t

s + 3t = 75

plug in

(60 - 2t) + 3t = 75

solve

60 - 2t + 3t = 75

60 + t = 75

-60       -60

t = 15

s + 2t = 60

plug in

s + 2(15) = 60

s + 30 = 60

    -30    -30

s = 30

Answer:

48 dollars

Step-by-step explanation:

Answer:

11°

Step-by-step explanation:

tan ∅ = 20/100 = 0.2

∅ = 11.31°

Answer:

7

Step-by-step explanation:

40-26=14

14/2=7