math help Would be appreciated!

Answer:

6

Step-by-step explanation:

30-21=9

9/3=3

3x2=6

Answer:

16

Step-by-step explanation:

30 - 21 ÷ 3 x 2 = 16

30 - 7 x 2

30 - 14

16

Answer:

$540

Step-by-step explanation:

$27 x 20

Answer:

[tex]y = \frac{1}{2}x[/tex]

Step-by-step explanation:

First plot (3,1). Then use the slope to create the second point. Go up 1, right 2.

Next draw a line connecting the points. The line touches the y-axis at 0.

[tex]y = mx + b[/tex] is the form you use.

~theLocoCoco

Answer:

5 boxes

Step-by-step explanation:

1 Box = 7.69

38.45/7.69 = 5

Answer:

5 cereal boxes

Step-by-step explanation:

If we know that one box is $7.69 and we have $38.45, we can make the expression: 38.45/7.69 (because we want to find the amount of boxes we can buy)

38.45/7.69 = 3845/769 = 5

You can buy 5 cereal boxes

Answer:

whats wish?

Step-by-step explanation:

Answer:

$4

Step-by-step explanation:

Answer:

2/5

Step-by-step explanation:

Step 1:

2/3 ÷ 5/3      Equation

Step 2:

2/3 × 3/5      Reciprocal

Answer:

2/5   Multiply

Hope This Helps :)

Answer:

130°

Step-by-step explanation:

The measure of the supplement of an angle is 50 more than twice the measure of the complement. Find the measure of the supplement

Let us represent the Angle as x

An Angle + It's supplement = 180°

x + supplement = 180°

Supplement = 180° - x

Angle + Complement = 90°

Complement = 90° - x

The measure of the supplement of an angle is 50 more than twice the measure of the complement.

Supplement = 50 + 2(Complement)

Since = Supplement = 180° - x

Complement = 90° - x

Hence

180° - x = 50 + 2(90° - x)

180° - x = 50 + 180° - 2x

Collect like terms

-x + 2x = 50 + 180 - 180

x = 50°

Angle = x = 50°

We are asked to find the Measure for the supplement

Supplement = 180° - x

Supplement = 180° - 50°

= 130°

Hence, the measure of the supplement = 130°

Answer:

Step-by-step explanation:

x in (-oo:+oo)

(1/2)*x+1 = 0

1/2*x+1 = 0 // - 1

1/2*x = -1 // : 1/2

x = -1/1/2

x = -2

x = -2

Answer:

See below.

Step-by-step explanation:

The density = mass / volume

=  612 / 245

= 2.50 g/cm^3.

The literature  states a density of 2.70 for the density of aluminium. The only other  metal which is close to this value is strontium ( d = 2.64) which is a silvery colour so it might be that.  One way to find out which it i s to see if the metal reacts with water. Aluminium does  not while strontium does.

Answer:

B

Step-by-step explanation:

rise over run the y-intercept is 3 and you go down 4 and run 3

Answer:

I believe its A

Step-by-step explanation:

Found the answer and its A, good luck.

Answer:

2 real roots

Step-by-step explanation:

Given a quadratic equation in standard form

ax² + bx + c = 0 ( a ≠ 0 )

Then the nature of the roots are found using the discriminant

Δ = b² - 4ac

• If b² - 4ac > 0 then 2 real and distinct roots

• If b² - 4ac = 0 then 2 real and equal roots

• If b² - 4ac < 0 then 2 complex roots

x² + 4x - 1 = 0 ← is in standard form

with a = 1, b = 4, c = - 1, then

b² - 4ac = 4² - (4 × 1 × - 1 ) = 16 + 4 = 20

Since b² - 4ac > 0 then the equation has 2 real and distinct roots

Answer:

x=9

Step-by-step explanation:

Answer:

the correct answer is 8

Answer:

The answer is 8 if you do it correctly

Step-by-step explanation:

Answer:

a. 14 + x

b. There are several ways to write this, 6y, 6(y)

Step-by-step explanation:

Look for key words when you do these types of questions!

For addition, add, sum, greater than, etc.

For multiplication, product, times, etc.

For subtraction, difference, less than, minus, etc.

And for division, look for quotient, divide, etc.

Hope this helps : )

Answer:

144

Step-by-step explanation:

(ab)²

(4*-3)²

(-12)²

144

Best of Luck!

Answer:Tables are used to organize exact amounts of data and to display numerical information. Tables do not show visual comparisons. As a result, tables take longer to read and understand. It is more difficult to examine overall trends and make comparisons with tables, than it is with graphs.

Line graphs are used to display data or information that changes continuously over time. Line graphs allow us to see overall trends such as an increase or decrease in data over time.

Bar graphs are used to compare facts. The bars provide a visual display for comparing quantities in different categories or groups. Bar graphs help us to see relationships quickly. However, bar graphs can be difficult to read accurately. A change in the scale in a bar graph may alter one's visual perception of the data.

Circle Graphs are used to compare the parts of a whole. Circle graphs represent data visually in the same proportion as the numerical data in a table: The area of each sector in a circle graph is in the same proportion to the whole circle as each item is to the total value in the table. Constructing an accurate circle graph is difficult to do without a computer. This is because you must first find each part of the whole through several elaborate calculations and then use a protractor to draw each angle. This leaves a lot of room for human error. Circle graphs are best used for displaying data when there are no more than five or six sectors, and when the values of each sector are different. Otherwise they can be difficult to read and understand.

Step-by-step explanation:

Answer:

f(a) = a^2 + 2a + 1

Step-by-step explanation:

Given the function f(x)= x^2 +2x + 1, find: f(a):

Merely substitute ' a ' for x:

f(a) = a^2 + 2a + 1

If you really want e*f(a), multiply the above by e:

e*f(a) = ea^2 + 2ea + e

Answer:

x = 10

Step-by-step explanation:

Answer:

x=4

Step-by-step explanation:

add 2x to both sides

-9=3x-21

add 21 both sides

12=3x

divide each side by 3

4=x

Answer:

Step-by-step explanation:

8/4 and 6/3

Answer:

52.

Step-by-step explanation:

Answer: 52

Step-by-step explanation:

Answer:

-3 times 8+1x

Step-by-step explanation:

Answer:

y = -2x -3

Step-by-step explanation:

If a line is perpendicular to another line, it means that the gradient of the new line (one that is perpendicular) is going to be the negative reciprocal of the old one.

Reciprocal means that it is flipped. So 1/2 would be 2 and 5 would be 1/5

Answer:

It will take 7 months.

Step-by-step explanation:

Let m represent the number of months.

21 + 2m = 35

Then, isolate the variable.

2m = 35 - 21

2m = 14

m = 7

Answer:

six less than d

take away six from d

Step-by-step explanation:

they both work

Answer:

2x²

Step-by-step explanation:

Given

- 2x² + 4x² ← these are like terms, both have x² in them

To simplify, add the coefficients, that is

= (- 2 + 4)x²

= 2x²

Answer: The answer to this is x= -9/4

Answer:

[tex]\boxed {x = - \frac{9}{4}}[/tex]

Step-by-step explanation:

Solve for the value of [tex]x[/tex] :

[tex]-2(x + \frac{1}{4}) + 1 = 5[/tex]

-Use Distributive Property:

[tex]-2(x + \frac{1}{4}) + 1 = 5[/tex]

[tex]-2x + \frac{-2}{4} + 1 = 5[/tex]

-Reduce the fraction [tex]\frac{-2}{4}[/tex] to the lowest terms by canceling out [tex]2[/tex] :

[tex]-2x + \frac{-2}{4} + 1 = 5[/tex]

[tex]-2x - \frac{1}{2} + 1 = 5[/tex]

- Convert the integer [tex]1[/tex] to [tex]\frac{2}{2}[/tex] :

[tex]-2x - \frac{1}{2} + 1 = 5[/tex]

[tex]-2x - \frac{1}{2} + \frac{2}{2} = 5[/tex]

-Since both fractions [tex]-\frac{1}{2}[/tex] and [tex]\frac{2}{2}[/tex] have the same denominator, you add the numerators together:

[tex]-2x - \frac{1}{2} + \frac{2}{2} = 5[/tex]

[tex]-2x + \frac{1}{2} = 5[/tex]

-Change the integer [tex]5[/tex] to [tex]\frac{10}{2}[/tex] and subtract [tex]\frac{1}{2}[/tex] on both sides. Then, when both fractions have the same denominator, you subtract them, by subtracting the numerators:

[tex]-2x + \frac{1}{2} - \frac{1}{2} = \frac{10}{2} - \frac{1}{2}[/tex]

[tex]-2x = \frac{9}{2}[/tex]

-Divide by Multiplying [tex]2[/tex] and [tex]-2[/tex] :

[tex]\frac{-2x}{-2} = \frac{9}{2 (-2)}[/tex]

[tex]x = \frac{9}{-4}[/tex]

-Rewrite the answer:

[tex]x = \frac{9}{-4}[/tex]

[tex]\boxed {x = - \frac{9}{4}}[/tex]

Answer:

the answer is false

Step-by-step explanation: