- 15 + 21c = - 9 need help asap

Slope=2

x−intercept=  2/10  =5

y−intercept=  −10/-1  =−10.00000

Answer:

2x+y-10=0

Step-by-step explanation:

6x+3y=30 move the constant to the left and change its sign

6x+3y-30=0

6x+3y-30=0 divide both sides of the equation by 3

Answer: 3.5 hours

Step-by-step explanation:

From the question, we are informed that Ray's burns 326 calories every hour. We are further told that he ate a doughnut that had 320 calories, and a latte had 820 calories. The total calories will be:

= 320 + 820

= 1140 calories

The number of hours needed to burn the calories will be the total calories divided by the amount of calories burnt in an hour. This will be:

= 1140/326

= 3.5 hours

Answer:

1/4

Step-by-step explanation:

0.25

25/100

25 ÷ 25 = 1

100 ÷ 25 = 4

1/4

Answer:

AB = 36

Step-by-step explanation:

Since E is the midpoint of AB, then

AE = EB , substitute values

4x + 6 = 10x - 12 ( subtract 10x from both sides )

- 6x + 6 = - 12 ( subtract 6 from both sides )

- 6x = - 18 ( divide both sides by - 6 )

x = 3

Thus

AB = AE + EB = 4x + 6 + 10x - 12 = 14x - 6 = 14(3) - 6 = 42 - 6 = 36

Answer:

Dr. Maette

Step-by-step explanation:

I'm not sure I've never read this :/

Answer:

5x + 4y = - 8

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Given

4x - 5y = 20 ( subtract 4x from both sides )

- 5y = - 4x + 20 ( divide all terms by - 5 )

y = [tex]\frac{4}{5}[/tex] x - 4 ← in slope- intercept form

with slope m = [tex]\frac{4}{5}[/tex]

Given a line with slope m then the slope of a line perpendicular to it is

[tex]m_{perpendicular}[/tex] = - [tex]\frac{1}{m}[/tex] = - [tex]\frac{1}{\frac{4}{5} }[/tex] = - [tex]\frac{5}{4}[/tex] , thus

y = - [tex]\frac{5}{4}[/tex] x + c ← is the partial equation

To find c substitute (- 4, 3) into the partial equation

3 = 5 + c ⇒ c = 3 - 5 = - 2

y = - [tex]\frac{5}{4}[/tex] x - 2 ← in slope- intercept form

Multiply through by 4

4y = - 5x - 8 ( add 5x to both sides )

5x + 4y = - 8 ← equation in standard form

Answer:

First, we need to figure out the total amount of students:

+ 10 students(ten students leave)

+ 15 students(15 students left)

10 + 15

= 25 students.

x = will represent the total amount of students in each group, so:-

5 groups per x students.

5x = 25(total students before alteration)

÷5    ÷5

x = 5, there are 5 students in each group.

Answer:

C = 5/9 (F - 32)

This is a temperature scale change comparison.

By this we understand, that ,

1°C = 5/9°F

Which is equal to, 5/9°F = 1°C

These two statements are satisfied by I. and II.

So, the correct answers are, I. and II.

If my answer helped, kindly mark me as the brainliest!

Thank You!!

2,094 cm^3

==========================================================

Explanation:

The diameter of 20 cm divides in half to the radius r = 10 cm.

The height is h = 20 cm.

V = volume of the cone

V = (1/3)*pi*r^2*h

V = (1/3)*pi*10^2*20

V = 2,094.3951023932 is approximate

I used my calculator's stored version of pi when computing the volume

That value then rounds to 2,094 cm^3 when rounding to the nearest whole number.

Answer:

See below.

Step-by-step explanation:

Given numbers :-

⇒ 176, 231, 247, 256, 272, 299, 325, 343, 366, 375

⇒ Median = 272 + 299 / 2 = 285.5

⇒ Mean = 2890/10 = 289

(a) median if 375 becomes 265

⇒ 176, 231, 247, 256, 265, 272, 299, 325, 343, 366

⇒ New median = 265 + 272 / 2 = 268.5

⇒ Decreases by 17

(b) mean if 375 becomes 265

⇒ New mean = 2890 - 110 / 10 = 2780/10 = 278

⇒ Decreases by 11

[tex]2~~,~~\stackrel{2-5}{-3}~~,~~\stackrel{-3-5}{-8}~~,~~...~\hspace{10em}\stackrel{common~difference}{d = -5} \\\\[-0.35em] ~\dotfill\\\\ n^{th}\textit{ term of an arithmetic sequence} \\\\ a_n=a_1+(n-1)d\qquad \begin{cases} a_n=n^{th}\ term\\ n=\stackrel{\textit{term position}}{64}\\ a_1=\stackrel{\textit{first term}}{2}\\ d=\stackrel{\textit{common difference}}{-5} \end{cases} \\\\\\ a_{64}=2+(64-1)(-5)\implies a_{64}=2+(-315)\implies a_{64}=-313[/tex]

Answer:

-313 is the 64th term

Step-by-step explanation:

you take the second term an minus the first term with the second one {2-(-3)}

{=5} then you take two an minus five

it gives you -3 then you press minus five again it gives you negative eight then you press (equals to)until you reach the term you looking for

Answer: 1. 0.075 (i think) , 2. $70.84, 3. 4.77$ , 4. 71.15$ ( i think this is true i don't know fs.)

Step-by-step explanation:

The amount of wrapping paper needed for the square pyramid gift box is: 96.72 in.².

Surface area of a square pyramid = area of the square base + area of the 4 triangular faces = s² + 4(1/2bh).

We are asked to find the amount of wrapping paper that would be needed to wrap the gift box, which is the surface area of the gift box that has a square pyramid shape.

Given the following dimensions of the gift box:

s = 5.2 in.

b = 5.2 in.

h = 6.7 in.

Plug in the values into s² + 4(1/2bh):

Surface area of a square pyramid = 5.2² + 4(1/2 × 5.2 × 6.7).

Surface area of a square pyramid = 96.72 in.²

Therefore, the amount of wrapping paper needed for the square pyramid gift box is: 96.72 in.².

Learn more about square pyramid on:

https://brainly.com/question/25823102

Answer:

4/13

Step-by-step explanation:

We can first find the GCD or GCF of 28 and 91. 91 in its simplest form is 13*7. 28 in its simplest form is 2*2*7. The only common factor they have is 7, so 7 is the GCD. We can divide both by 7 to get [tex]\frac{4}{13}[/tex]

Answer:

1:2

4:1

1:5

5:7

I can't really give a step by step but just find the distance for the numerator and denominator and simplify

Answer:

Chicago

Step-by-step explanation:

Compare the temperatures:

-4, -14, -11, -13

Numbers become smaller to the left on the number scale.
For instance, -10 is less than -5.

So, -13, -11, and -4 are all greater than -14.

And the lower the temperature, the colder it is.

Thus, Chicago is the coldest.

Answer:

See below.

Step-by-step explanation:

The only number this is true for is 1 . The square root and cube root of 1 is 1.

For all other perfect square/ perfect cube numbers they are different. For example square root of 64 is 8 and its cube root.

Answer: It must be A

Step-by-step explanation:

The reason is because it is the only that is a integer and a fraction

Answer:

5 m

Step-by-step explanation:

A nonagon has 9 sides. You get individual side length by dividing the perimeter by amount of sides. 45 divided by 9 is 5.

Answer:

[see below]

Step-by-step explanation:

"The product of 5 and a number x is 14" would be:

[tex]5x=14[/tex]

[tex]5x=14\\\\\frac{5x=14}{5}\\\\ \boxed{x=2 \frac{4}{5}}[/tex] or 2.8

Hope this helps.

Answer:

$10.80

Step-by-step explanation:

Final Price = Original Price - Discount

Final Price = 18 - 7.2

Final Price = $10.80

Complete question is;

Write the equation of line in slope-intercept form. Line parallel to y = 0.5x + 3 that passes through the point (−9,12)

Answer:

y - 12 = 0.5(x + 9)

Step-by-step explanation:

We want to find the line parallel to y = 0.5x + 3 that passes through the point (−9,12).

To some this, we will use the equation;

y - y1 = m(x - x1)

Here, x1 = -9, y1 = 12, m = 0.5

Thus;

y - 12 = 0.5(x - (-9))

y - 12 = 0.5(x + 9)

Answer:

x/2

Step-by-step explanation:

2/2=1=y

4/2=2=y

6/2=3=y

Step-by-step explanation:

30-9+3-(12÷4)

30-9+3-3

21

Hope this helps you

have a good day.

Answer:

21

Step-by-step explanation:

Original Equation:
30 - 9 + 3 - (12 ÷ 4)
Divide inside the parentheses:
12 divided by 4 equals 3

Equation:
30 - 9 + 3 - 3

Now, subtract 9 from 30
21

Equation:

21 + 3 - 3

The threes cancel each other out:

Add 3 to 21

24

Equation:
24 - 3

Subtract.
21

The answer is 21

Hope this helped :)

Answer:

Give the triangle area so we can solve it for you.

Step-by-step explanation:

½*base*height

Step-by-step explanation:

the triangle is not given so let us take its base=b,and height=h

by using the formula=½*base*height

½*b*h

Answer: 28.8

Step-by-step explanation:

the square root of 1728 is 41.57.

Answer:

41.57 is the answer.