Mathematics Middle School

Solve for x

8+10x-3x^2=0

Answers

Answer 1

Answer: x = 4

or x= -2/3 = -0.667

Step-by-step explanation:

Related Questions

Need Help Please, Stressing out :( and Thank you:)

Answers

Answer:

please don't be stressed :)

2. c

Step-by-step explanation:

2. if 1,000 is one kilogram then 1,412 = 1.412.

sorry i could only answer 1 but hope this helps

I think it is C, if I’m wrong, I’m really sorry !

Which set of side lengths is a Pythagorean triple?

A) 1, 3, 10
B) 4, 5, 9
C) 9, 40, 41
D) 16, 30, 44

Answers

Answer:

A 1,3,10

Step-by-step explanation:

3, 4, 10. This means that 3 and 4 are the lengths of the legs and 5 is the hypotenuse.

I believe the answer is A: 1, 3, 10. If that is wrong, I’m terribly sorry!!

how do you write the algebraic notation when the scale factor is 3

Answers

Answer:

(x,y) = (3x,3y)

Step-by-step explanation:

Answer:

I can agree

Step-by-step explanation:

Find the diameter of the object.

A circular steering wheel with radius labeled 0.8 feet.

diameter:
ft

Answers

in order to find the diameter, you multiply the radius times 2.....so you would do 0.8 times 2 which equals 1.6

The diameter of the circular steering wheel is 1.6 feet

How to determine the diameter?

The radius of the object is given as:

r = 0.8 feet

Multiply both sides by 2, to determine the diameter

d = 2 * 0.8 feet

Evaluate

d = 1.6 feet

Hence, the diameter of the circular steering wheel is 1.6 feet

Answers

Answer:

reflection, then rotation, then translation

Step-by-step explanation:

Read the problem statement. It tells you the sequence:

Triangle A B C is reflected across B C to form triangle A prime B C. Triangle A prime B C is then rotated about point A to form A prime B prime C prime. Triangle A prime B prime C prime is then shifted to the right to form A double-prime B double-prime C double-prime.

The transformations are ...

reflection, then rotation, then translation

Answer:

Reflection, Rotation, translation

Step-by-step explanation:

Read the problem statement. It tells you the sequence:

Triangle A B C is reflected across B C to form triangle A prime B C. Triangle A prime B C is then rotated about point A to form A prime B prime C prime. Triangle A prime B prime C prime is then shifted to the right to form A double-prime B double-prime C double-prime.

The transformations are ...

If you need 4 tables spoons of golden syrup to make 10 cupcakes, how many tables spoons of golden syrup will you need to make 4 cupcakes.

Answers

Answer:

1.6 tablespoons

Step-by-step explanation:

Let’s make a proportion

syrup/cupcakes=syrup/cupcakes

4 tablespoons are needed for 10 cupcakes and x tablespoons are needed for 4 cupcakes.

4/10=x/4

Now we have to solve for x. x is being divided by 4. To reverse this, multiply both sides by 4, because multiplication is the opposite of division.

4*4/10=x/4*4

The 4s on the right will cancel, so we are left with:

4/4*10=x

1.6=x

So, 1.6 tablespoons are needed for 4 cupcakes.

Which statement about the credibility of this source is most accurate ? A.

Answers

Answer:

C. The source is credible because it contains facts and information that are accurate.

Step-by-step explanation:

The statistics(60%) used provide facts on the topic that make the source credible

The hourly wages earned by 20 employees are shown in the first box-and-whisker plot below. The person earning $15 per hour quits and is replaced with a person earning $8 per hour. The graph of the resulting salaries is shown in plot 2. A box-and-whisker plot is shown. The number line goes from 7 to 15. The whiskers range from 8 to 15, and the box ranges from 8.8 to 10.2. A line divides the box at 9.5. Plot 1 A box-and-whisker plot is shown. The number line goes from 7 to 15. The whiskers range from 8 to 11, and the box ranges from 8.7 to 10. A line divides the box at 9.6. Plot 2 How does the mean and median change from plot 1 to plot 2? The mean and median remain the same. The mean decreases, and the median remains the same. The mean remains the same, and the median decreases. The mean and median decrease.

Answers

Answer:

The mean decreases, and the median remains the same.

Step-by-step explanation:

Remember that a box plot is made by the quartiles of the distribution, the maximum value and the minimum value. So, from a box plot we can deduct the range, the median and the interquartile range.

In this case, the median remains the same at $9.5 per hour. The median is indicated by the middle line of the box, and you can observe that it doesn't change.

Now, the range of the data set decreases from 7 to 3.

On the other hand, the mean must decrease, because data greater than $11 doesn't exist in the box plot number 2, and the mean is a central measure sensible to those changes.

Therefore, the right answer is The mean decreases, and the median remains the same.

Answer:

the awswer is b

Step-by-step explanation:

took the test

Which of the situations describes a temperature of –2 degrees?
2 degrees colder than 1 degree
2 degrees colder than 0 degrees
2 degrees warmer than 1 degree
2 degrees warmer than 0 degrees

Answers

2 degrees colder than 0 degrees because is comes before zero, therefore a negative 2

Answer:

Step-by-step explanation:

Consider the graph of function, f, below.

Select the true statement.
Α. The graph has a slope of
B. The graph is negative on the interval (-4,-2).
C. The graph has a y-intercept of 2.
D. The graph is increasing on the interval [4, 6].

Answers

The graph has a y intercept of 2, that’s where it crosses on the line

PLEASE HELP 35 POINTS!!!!!!

In two or more complete sentences discuss the advantages and disadvantages of investing in a 529 plan versus investing in a money market account.

Answers

Answer:

Step-by-step explanation:

A 529 plan (Qualified tuition plan) is a tax-advantaged savings plan for future education costs while a money market account refers to a investment or a deposit with a financial institution that earns interest based on the current rates.

Money market deposit accounts are better choices than 529 plan for money you might need to tap at a moment’s notice to cover an emergency or an unexpectedly large expense. They pay higher interest than ordinary savings accounts and give you immediate access to your money

While in 529 savings plan, If you don’t use the money invested for college tuition, you will be penalized 10 percent when you withdraw the money to use it for something else. In addition, both your state and the federal government will tax the earnings on your account in your current tax bracket.

The basic advantage of 529 plan over money market account is the tax-advantage that is the amount invested or withdrawn is tax free. It also has high return and funds from it can be used for another beneficiary who is a qualified family member. Whereas the disadvantage is that the 529 plan is a specified fund for future education purposes. This makes it restricted as the fund can not be transferred for a different use. Unlike the money market account whose use is not restricted. It can be withdrawn to meet diverse financial needs including education. More so, funds in the money market account are insured and can be easily accessed.

In essence, the 529 plan is a specific investment while a money market account is more general in nature.

Answer:

im grounded bc i cheated with this

Step-by-step explanation:

A rectangle has a height of 7a^2 and a width of a^4+5a^2+4.

Express the area of the entire rectangle.

Answers

7a^6 + 35 a^4 + 28a^2

Find the value of x and y

Answers

Answer:

x=24 y=19

Step-by-step explanation:

2y=y+19

y=19

2x-8=x+16

x=16+8

x=24

Answer:

x = 24

y = 19

Step-by-step explanation:

Set the expressions with the x-variables together, and the y-variables together, like so:

2x - 8 = x + 16

Subtract x from both sides:

x - 8 = 16

Add 8 to both sides:

x = 24

Solving for y:

2y = y + 19

Subtract y from both sides:

y = 19

Fill out the following table.
Do you see a pattern? Do you think this will always be true? Why or why not?

Answers

Answer:

I had the same question just without the why or why not, But it will always be true :)

Step-by-step explanation:

Hope It Helps :)

Which ordered par Woud form a proportional relationship with the point graphed Below?

A (10,10)
B (25,35)
C (70,50)
D (90,60)

Answers

D: (90,60) that’s the answer

NEED HELP ASAP
Find the volume of the cylinder. r measures 7 inches, height measures 8 inches

Answers

Answer:

1230.88

Step-by-step explanation:

Volume= pi(r^2)h

Volume=3.14(49)(8)

Volume=1230.88

A cube has a surface area of 150 square inches (in)
What is the area, in square inches, of one face of the cube?
A) 50 in 2
B) 5 in2
C) 37.5 in 2
OD) 25 in2

Answers

Answer:

25in²

Step-by-step explanation:

a cube has 6 faces

all of these are equal

therefore you need to divided 150 by 6

that's 25

the answer is 25 in²

Amy must choose a number between 55 and 101 that is a multiple of 3, 6, and 7. Write all the numbers that she could choose. If there is more than one number, separate them with commas.

Answers

Answer:

Step-by-step explanation:

L.C.M. of 3,6,7=42

42×1=42

42×2=84

42×3=126

55<84<101

Does the function model exponential growth or decay?
h(t) = 0.25 - 1.5t
A.) growth
B.) decay

Answers

Answer: it’s growth

Step-by-step explanation:

Find the interquartile range (IQR) of the data in the box plot below.

Asap ASAP Please PLZ

Answers

Answer:

Step-by-step explanation:

IQR is the difference between the upper and lower medians so the IQR = 7 - 4 = 3

The interquartile range (IQR) of the data in the given box plot is: 3.

What is the Interquartile Range (IQR) of a Data?

In a box plot, the interquartile range (IQR) is the difference between the upper quartile and the lower quartile which are represented as each edge of the rectangular box.

Upper quartile = 7Lower quartile = 4

Interquartile range (IQR) = 7 - 4

Interquartile range (IQR) = 3

Learn more about Interquartile range (IQR) on:

https://brainly.com/question/17083142

#SPJ2

If a=3i-7j and b=5i+2j, find a-b

A.2i-9j
B.2i-5j
C.8i-5j
D.8i-9j

Please explain how you solve this because i am confused

Answers

Answer:

- 2i - 9j

Step-by-step explanation:

a - b

= 3i - 7j - (5i + 2j) ← distribute

= 3i - 7j - 5i - 2j ← collect like terms

= - 2i - 9j

None of the answers on your list

A rectangle has width twice its height. If the perimeter is 12cm what are the dimensions of the rectangle?

Answers

Answer: height = length = 2 cm

Width = 4 cm

Step-by-step explanation:

P = 2 (l + b)

12 = 2 (x + 2x)

12 = 2x + 4x

12 = 6x

X = 12/2 = 2 cm

What is the volume of the pyramid h=9.6 l=8.5 w=8.5

Answers

Answer:

V = 231.2

Step-by-step explanation:

v = (l * w * h )/3

Answer:

V ≈ 231.2

Step-by-step explanation:

Using the formula: V = 1/3 x L x W x H

Fill in the blank. Given O below, you can conclude that so is congruent to

A. WA

B. WR

C. 0O

D. AO

Answers

Answer:

you never showed the graph so if this is it the answer is ao

Step-by-step explanation:

Find the value of X

X=

Part B

Find the measure of RPS

A. 45

B. 36

C. 60

D. 64

Answers

Answer:

x=8

RPS = 36

Step-by-step explanation:

QPS = 180

The two angles that form QPS

QPR + RPS = 180

7x+88 + 3x+12 = 180

Combine like terms

10x+100 =180

Subtract 100 from each side

10x = 180-100

10x = 80

Divide by 10

x =80/10

x = 8

RPS = 3x+12

= 3(8)+12

24+12

Based on the boxplot, which statement below is true?
A) The range of both box plots is about the same.
B) The means of both plots are approximately equal.
C) Plot B contains more data points than Plot A.
D) The mediums are approximately equal.

Answers

Answer:

Step-by-step explanation:

Find the length of arc KN.
can a genius help me??please

Answers

Answer:

Length KN = 2π/3 = 2.094

Step-by-step explanation:

Length KN = (mKN/360)2πr

Length KN = (40/360)2π3

Length KN = (1/9)6π

Length KN = 6π/9

Length KN = 2π/3 = 2.094

Segments AB, DC and Ec intersect at point C. Angel DCE measures 148. Find the value of x.

Answers

The image is attached.

Answer:

x = 16°

Step-by-step explanation:

Segment AB, segment DC and segment EC all intersect at point C.

Here, we are told angle DCE measures 148°.

This is a semi-circle, and the total angle of a semi-circle is 180°.

Which means, x+x+148 = 180

Solving for x, we have:

x+x+148 = 180

2x + 148 = 180

2x = 180 - 148

2x = 32

[tex]x = \frac{32}{2}[/tex]

x = 16°

The value of x is 16°

A sporting goods company sells a tent with the dimensions shown. The company wants to introduce a new, larger tent that is geometrically similar to the original tent but with a height of 6 feet. How will the volume of the new tent compare with the volume of the original tent?

Answers

Answer:

The volume of the new tent will be 3/2 times the volume of the original

Step-by-step explanation:

The original tent is a triangular prism, which missing dimensions of the tent are:

base (b): 6 ftheight (h): 4 ftlength (l): 7 ft

Volume of the original tent:

V = 1/2*b*h*l

The only difference between the new and the original tent are their heights. Let's call h' = 6 ft to the height of the new tent.

Volume of the new tent:

V' = 1/2*b*h'*l

Dividing V' by V:

V'/V = (1/2*b*h'*l)/(1/2*b*h*l)

V'/V =h'/h

Replacing with data:

V'/V =6/4

V' = 3/2*V

let g(x) = 2x and h(x) = x^2+4. Evaluate (h x g)(-3).

Answers

Answer:

Step-by-step explanation:

Use math-way!

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Solve for x 8+10x-3x^2=0

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Solve for x

8+10x-3x^2=0