sorry for the bad example.

**Step-by-step explanation:**

b²-4ac>0

(-2)²-4(1×3k)>0

4-12k>0

-12k>-4

k<⅓

**Answer:**

**Step-by-step explanation:**

b²-4ac>0

(-2)²-4(1×3k)>0

4-12k>0

-12k>-4

k<⅓

a coin is tossed 4 times. what is the probability of getting heads each time

answer: 1/16

If you flip a coin 4 times, the probability of getting all heads is 1/16.

URGENT

Evaluate the expression below for the given value

X^2+ 2x for x = -3

**Answer:**

-3×2+2×-3

-6+-6

-12

I think^=×

**Answer: 3**

**Step-by-step explanation:**

X^2+ 2x for x = -3

(-3)^2+ 2(-3)

(-3)(-3) -6

+9 -6

3

Bret buys a dining table that costs $150 before tax. The sales tax is 8%. How much sales tax did he pay?

**Answer:**

$12

**Step-by-step explanation:**

to find sales tax you multiply the cost by the percentage

you do 150 * 8%

thats also 150 * 0.08

150 * 0.08 is 12

so you pay $12 in tax

Bret paid** $12** as **sales tax.**

A mathematical expression is made up of **terms (constants and variables) **separated by **mathematical operators**. A mathematical equation is used to **equate two expressions**. Equation modelling is the process of writing a **mathematical verbal expression** in the form of a mathematical expression for **correct analysis, observations **and** results** of the given problem. In a fraction say **(x/y)**,** [y]** is called **denominator.**

We have Bret buys a dining table that costs **$150** before tax. The sales tax is **8%**.

Assume that he paid **$[x]** as sales tax. Then, we can write -

[x] = 8% of 150

[x] = (8/100) x 150

**[x] = 12**

Therefore, Bret paid** $12** as sales tax.

To solve more questions on **Equations, Equation Modelling and Expressions** visit the link below -

brainly.com/question/14441381

#SPJ2

check attachment for question

**Answer****:**

[tex]\displaystyle 3x^2 + x[/tex]

**Explanation****:**

All you are doing is combining like-terms:

[tex]\displaystyle \boxed{3x^2 + x} \Rightarrow [5x + x^2 - 1] + [2x^2 - 4x + 1][/tex]

I am joyous to assist you at any time.

which graph appears to show a proportional relationship between x and y

**Answer:**

What graph?

**Step-by-step explanation:**

No wonder why you have been waiting 25+ mins to get an answer

There are visitors at home. Michelle made 10 and 3/5 cups of tea while Leslie made 9 and 2/5 cups of tea. How many cups of tea did the two sisters make for the visitors? *

**Answer:**

20 cups

**Step-by-step explanation:**

Michelle: 10 3/5 cups made

Leslie: 9 2/5 cups made

Steps:

*First, let's turn each number into decimal form.*

10 3/5 = 10.6

9 2/5 = 9.4

*Then, add*

9.4 + 10.6 = 20

*Conclusion*

They made 20 cups in all

**Note:**

Hope this helped :)

Have a nice day

Reply with any questions or concerns please :D

Which is an equation of the line through the origin and (-5,6)?

A. y=-5/6x

B. y=-6x

C. y=-5x

D. y=- 6/5x

**Answer:**

y=-6/5x

**Step-by-step explanation:**

Mark deposited $750 in a savings account earning 3% interest over 9 years. What was the total interest earned after 9 years?

**Answer: The final balance is $982.47.
**

**The total compound interest is $232.47.**

**Step-by-step explanation:**

Plzzzzz help meeeee plzzzz I really d answa

**Answer:**

c. is correct answer I think

3(2/3p+3-1/3p-5) What is the simplified version of this equation.

**Answer: p+1**

**Step-by-step explanation:**

3(2/3p+3-1/3p)

=3(1/3p+3)

=p+1

7x – 5 – 3x = 7 – 6x solve for x

**Step-by-step explanation:**

7x - 3x=5 + 7

we will plus --

10x =12

x=12÷10 or 10 /12

x=12.2

8 x 1/2=4 simplified

**Answer:**

**Step-by-step explanation:**

8➗2=4

since 1/2 is divinding

HELLLLLLLLLLLLLPPPPPPPPPP

The first option. 100% correct.

[tex]a_n = 3\cdot a_{n-1}\\\\a_1 = 7\\\\a_2 = 3 a_{2-1} =3a_1 = 3(7) =21\\\\a_3 = 3 a_{3-1} =3a_2 = 3(21) = 63 \\\\a_4 = 3 a_{4-1} = 3 a_3 = 3 (63)=189\\\\7,21,63,189,......[/tex]

Solve four ninths minus four tenths equals blank.

**Answer:**

2/45

**Step-by-step explanation:**

Find the equation of the line passing through the point (-1,0) and parallel to the line

y=-1/2x+3/7

A) y= 2x + 2

B) y = -1/2-1/2

C) y = 1/2x+1/2

D) y = - 1/2x+1/2

**Answer:**

B) y= -½x -½

**Step-by-step explanation:**

Slope-intercept form

y= mx +c, where m is the slope and c is the y-intercept.

[tex]y = - \frac{1}{2} x + \frac{3}{7} [/tex]

Slope of given line= -½

Since parallel lines have the same slope, slope of unknown line= -½.

y= -½x +c

To find the value of c, substitute a pair of coordinates into the equation.

When x= -1, y= 0,

[tex]0 = - \frac{1}{2} ( - 1) + c[/tex]

[tex]0 = \frac{1}{2} + c[/tex]

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

Thus, the equation of the line is **y= -½x -½**.

Solve (u+2)^2+6=69 , where u is a real number.

**Answer:**

5.94 and -9.94

**Explanation****:**

Use complete the square to answer the question and then type the last line into a calculator to get 5.94 and -9.94

Taylor left to walk the dog at

4:25. She got back at 5:00. How

long was the dog's walk?

**Answer:**

Taylor walked 35 minutes

**Step-by-step explanation:**

4:25

+:35

=5:00.

once a clock hits 60 it's automatically turned to the next hour so since 25 + 35 = 50 it's automatically turned to 5:00

Cherie has 4 gift cards. Each gift card is worth $10. If she spends $23, how much will she have left?

Answer: She'll have $17 left.

Step-by-step explanation:

4 * 10 = 40

40 - 17 = 23

Hope this helps!

Estimate the area please. will give brainliest.

**Answer:63**

**Step-by-step explanation:**

find the value of 777^2 - 223^2

**Answer:**

**549440**

**Step-by-step explanation:**

**777^2 = 603729**

**223^2 = 54289**

**603729 - 54289 = 549440**

25)

Find the measure of each lettered angle.

The diagram is not drawn to scale.

**Answer:**

The Diagram is not showing

**Step-by-step explanation:**

if f(x)=2x^2-1, then f(-3)=

**Answer:**

f(-3) =17

**Step-by-step explanation:**

f(x)=2x^2-1

Let x = -3

f(-3)=2(-3)^2-1

= 2(9) -1

= 18-1

17

What is the range of the function y = x^2?

Ox>0

O all real numbers

Oy>0

**Answer:**

The range is y≥0

**Step-by-step explanation:**

The shape of this graph is a parabola

You may see this by using the Desmos calculator and typing y=x^2 if you would like to visualize.

(a) The function y = x^2 simply takes whatever number you feed it (x) and outputs x squared.

For example

y = (2)^2=4

y = (3)^2 = 9

(b) To graph x^2 simply make a table of values and plug in 0 -> however high you would like to go ( usually to 5 or so is fine but you could go to infinity).

Example

**y = x^2**

Y | X

________

2 | 4

3 | 9

4 | 16

In this case the function's range is y≥0 because all y values will be greater than or equal to 0.

If you are wanting to learn how to specifically graph this you can look up (Graphing y = x²) if my quick graphing explanation back at mark (b) does not help.

Hehhhhhhhhhhhhhheh eh

So smart✅ like the humor tho

34.2 is what percent of 288? Round to the nearest hundredth.

**Answer:**

11.87%

**Step-by-step explanation:**

34.2/288=0.11875

Which is about 0.1187

So 11.87%

**Answer:**

11.87

**Step-by-step explanation:**

mental math and just big brain

Burt ran the length of the trail in his town’s park. There are 9 parts to the trail, and each part is the same length. Burt ran a total of 1.8 kilometers.

What is the length of each part of the trail?

**Answer:**

.2 kilometers

**Step-by-step explanation:**

Since there are 9 parts to the trail and the total is 1.8 kilometers, just divide the total by how many parts. 1.8 divided by 9 is .2 so the length of each part of the trail is .2 kilometers

Ernie played 35 soccer games this season. He won 28 games. Enter the

percentage of games Ernie won.

28 / 35 first divide

= 0.8

Then multiply the decimal with 100

0.8 x 100

= 80

There fore the answer is 80%

Hope this helps!

Brainliest is much appreciated!

= 0.8

Then multiply the decimal with 100

0.8 x 100

= 80

There fore the answer is 80%

Hope this helps!

Brainliest is much appreciated!

**Answer:**

I think it;s 9.8

**Step-by-step explanation:**

You divide 35 and 28 i think

Determine whether each equation represents a proportional relationship.

Y=2.5x

y= x - 4

**Answer:**

y=2.5x - Proportional

y= x - 4 - Not Proportional

**Step-by-step explanation:**

A linear function that is proportional is in the form y =kx (k is the constant of variation) and passes the origin.

The first equation given is in this form (2.5 is the constant) and it passes through the origin. It is proportional.

However, the second one is not proportional is it does not pass the orgin and it's not in y=kx form.

Hope this helps.

1. Name a midsegment in the triangle.

**Answer:**

EF

**Step-by-step explanation:**

Hope this helps!

solve for x -22=-7+3/5x

X-22=-7+3/5x

Answer x= 75/2

Explanation:

X-22=-7+3/5x multiply both sides of the equation my 5

5x-110= -35+3x

Move the variable to the left-hand side and change its sign

5x-110-3x= -35

Move the constant to the right-hand side and change its sign

5x-3x= -35+110

Collect like terms

2x= -35+110

Calculate the sum

2x=75

Divide both sides of the equation by 2

x=75/2

Answer x=75/2

Answer x= 75/2

Explanation:

X-22=-7+3/5x multiply both sides of the equation my 5

5x-110= -35+3x

Move the variable to the left-hand side and change its sign

5x-110-3x= -35

Move the constant to the right-hand side and change its sign

5x-3x= -35+110

Collect like terms

2x= -35+110

Calculate the sum

2x=75

Divide both sides of the equation by 2

x=75/2

Answer x=75/2

need help on this I need all work shown as well, the subject is on similar triangles
plz help me!!!!!!!!!!!!!!!
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