Mathematics Middle School

Eight times the sum of a number and one is -8

Answers

Answer 1
x= a number
times= multiply
sum= add

8(x + 1)= -8
multiply 8 by parentheses

(8*x) + (8*1)= -8

8x + 8= -8
subtract 8 from both sides

8x= -16
divide both sides by 8

x= -2


CHECK:
8(x + 1)= -8
8(-2 + 1)= -8
8(-1)= -8
-8= -8


ANSWER: The number is -2.

Hope this helps! :)

Related Questions

Originally priced at $15.99 was marked down 15% and then it was moved to a clearance rack marked take an additional 50% off the lowest marked price what is the final price of the PlayStation game

Answers

First, the mark down 15% would make the value 85% of the original, so doing 15.99*0.85 gives you 13.59. Then take that and multiply that by 0.5, because of the half price, to get a final price of $6.79

What is the range of the following graph?

Answers

Range is the set of possible y values. If you look at the end behavior of the function, as x approaches both infinity and negative infinity, y continues to increase in magnitude, meaning that the range is from negative infinity to infinity. the correct answer is B.

Subtract the quotient of 18 and 2 from sum of 22 and 9

Answers

Step by Step Answer
18/2 = 9
22 + 9 = 31
31 - 9 = 22

Plaese help me i will give you 20 points!!!!!

Answers

Since it took 10 years for the price to rise by 11 cents, you could estimate that it would take around 7-8 years for it to rise by 8 cents to reach .52.

I hope this helps!

Enter the value of 5 times (13.5-4.5)

Answers

The answer is 45 because you do parenthesis first which is 13.5-4.5=9 then you multiply 9×5=45 therefore the answer is 45.

Expansion is a means by which complex function are simplified. The value of the expression 5 times (13.5-4.5) is 45

Factorization and expansion

Expansion is a means by which complex function are simplified by multiplying the expression with one another.

Given the expression:

5(13. 5 - 4.5)

According to the distributive property:

= 5(13. 5 - 4.5)

= 5(13.5) - 5(4.5)

= 67.5 - 22.5

= 45.0

Hence the value of the expression 5 times (13.5-4.5) is 45

Learn more on expansion here: https://brainly.com/question/26430239

I WILL MARK BRAINLIEST

The graph shows the location of Gary's, Joan's, and Kash's houses on a coordinate plane. Each unit on the graph represents 1 mile.

Joan is going to pick up Gary and Kash for band practice at her house this afternoon. She is going to pick up Kash first, then Gary, and then go back home for practice. How many total miles will Joan travel while picking up her bandmates? Round your answer to the nearest mile.

A. 9 miles
B. 10 miles
C. 19 miles
D. 22 miles

Answers

D. is the answer if im not mistaken

Answer: D

i think it is D

Step-by-step explanation:

Find the area of a parallelogram....

Answers

The area of a parallelogram is ...
  A = bh
Substituting the given values, you have
  A = (3x +5)(7x -1)
We presume you want the product multiplied out. Use the distributive property for that.
  A = 3x(7x -1) +5(7x -1)
  A = 21x² -3x +35x -5
  A = 21x² +32x -5

The area of the parallelogram is 21x² +32x -5.

How do you fully learn your times table and division

Answers

Go over them everyday and let someone test you out from the 1x then 2x and etc
There are simple tricks
•For the 0 everything is 0
•For the 1’s it’s always the same number ur multiplying it by so like 1x2 is just gonna be 2
1x3 is 3 and 1x578 is 578 simple as that.
•For your 2s times tables it’s literally just adding the same number twice so let’s say you have 2x7 which is the same thing as saying 7x2 all you have to do is just add the same number twice so it’s 7+7= 14 lets do another so 5x2 =10 so 5+5=10
•For your 3’s here’s a 2 minute video and it’s supper helpful
https://m.youtube.com/watch?v=ONl323NU0ws
•For the 4s times tables here a quick link https://m.youtube.com/watch?v=UOGuJRzYv0A
•For the 5s times tables it’s really easy not sure if you need help with that one
•For the 6s
https://m.youtube.com/watch?v=cMMa0iWAOdA
•For 7s
https://m.youtube.com/watch?v=hau8eYZV0t8
•For 8s
https://m.youtube.com/watch?v=-C-e33iVBTM
•For 9s
https://m.youtube.com/watch?v=puFOpCt1_DY
•For 10s all you have to do is do the same trick as for the 1s but put a zero behind the number so 10x7 is 70 and 10x8 is 80 and 10x9 is 90

There is only so many tricks you can learn so just study it a-little bit because multiplication is veryyyy important.
Multiplying is just adding the same number how ever many times
So let’s say you need to add the number 2 in 9 different times instead of saying 2+2+2+2+2+2+2+2+2=18 you can just simply say 2x9=18 simple Right?

If you need 12 and 11s times tables just let me know
Hope this helped, seems like a lot but trust me it’s not everyone knows them all. As you get older you start memorizing them better :)

Kristen invests $5,745 in a bank. The bank pays 6.5% interest compounded monthly. How long must she leave the money in the bank for it to double? Round to nearest tenth of a year.

Answers

To solve this we are going to use the compounded interest formula: [tex]A=P(1+ \frac{r}{n})^{nt} [/tex]
where
[tex]A[/tex] is the final amount 
[tex]P[/tex] is the initial investment
[tex]r[/tex] is the interest rate in decimal form 
[tex]t[/tex] is the time in years 

We know that initial investment is $5,745, so [tex]P=5745[/tex]. We also know that Kristen wants his investment to double, so [tex]A=2*5745=11490[/tex]. Now, to convert the interest rate to decimal form, we are going to divide the rate by 100%: [tex]r= \frac{6.5}{100}=0.065 [/tex]. Since the interest is compounded monthly, it is compounded 12 times per year: therefore, [tex]n=12[/tex]. Now that we have all the information we need, lets replace the values in our formula and solve for [tex]t[/tex]:
[tex]A=P(1+ \frac{r}{n})^{nt} [/tex]
[tex]11490=5745(1+ \frac{0.065}{12})^{12t} [/tex]
[tex] \frac{11490}{5745} =(1+ \frac{0.065}{12})^{12t}[/tex]
[tex]2=( \frac{2413}{2400} )^{12t}[/tex]
[tex]ln(2)=ln(\frac{2413}{2400} )^{12t}[/tex]
[tex]ln(2)=12tln(\frac{2413}{2400} )[/tex]
[tex] \frac{ln(2)}{12ln(\frac{2413}{2400} )} =t[/tex]
[tex]t=\frac{ln(2)}{12ln(\frac{2413}{2400} )}[/tex]
[tex]t=10.7[/tex]

We can conclude that she must leave the money for 10.7 years in the bank for it to double.

Triangle BCD is similar to triangle ACE. If the triangles are isosceles, what is the length of AB?
F.) 16cm
G.) 11cm
H.) 40cm
J.) 35cm

Answers


[tex] \frac{2.75}{22} = \frac{5}{ac} \\ ac = 5 \div ( \frac{2.75}{22} ) = 40 \\ ab = 40 - 5 = 35[/tex]
Correspondind sides, similar triangles

hurry!! A company produces 4.56x10³ light bulbs each week. Written in scientific notation, which is the best estimate of how many light bulbs the company will make in 9.36x10² weeks?
4.5x10¹ light bulbs
1.4x10⁵ light bulbs
4.5x10⁶ light bulbs
45x10⁶ light bulbs

Answers

4.5x10⁶ light bulbs
The actual answer is 4.26x10^6. multiply 4.56 and9.36 to get 42.6816 add the exponents of the 10^3 and 10^2 for 10^5 move the decimal 1 place to the left to get 4.26x10^6

Answer:[tex]4.5\times10^6[/tex] light bulbs

Step-by-step explanation:

Given : The number of bulbs produced by company in 1 week=[tex]4.56\times10^3[/tex] lights

Then the number of  bulbs produced by company in [tex]9.36\times10^2[/tex] weeks is given by :-

[tex]4.56\times10^3\times9.36\times10^2\\\\=4.56\times9.36\times10^{3+2}\\\\=42.6816\times10^5\approx45\times10^5....\text{[To the nearest 5s]}\\\\=4.5\times10^6[/tex]light bulbs

Hence, the number of  bulbs produced by company in [tex]9.36\times10^2[/tex] weeks=[tex]4.5\times10^6[/tex] light bulbs

what the answer is and how?

Answers

so what we know is that 15 is the diameter

However the formula to find the area of a circle is A=[tex] \pi [/tex]r²
So to convert the 15 in diameter to a radius you have to do 15÷2,which is equal to 7.5

Now we know that the radius is 7.5.
So what we do now is A=[tex] \pi [/tex]7.5²
Then after we find what 7.5² is we get A=[tex] \pi [/tex]56.25
Then what we do is 3.14×56.25, because pi= 3.14.
So when we do 3.14×56.25, we get 176.625
So the answer is A= 176.6 in²

Find the area of the trapezoid to the nearest tenth.

Answers

The area of the trapezoid would be 153. What I’d did was 1.3 added to 1.5 added to 0.6, multiplied by 45, and I got the answer of 153.

vector works the same number of hours every week he worked a total of 532.5 and hours in the last 15 weeks. how many hrs did he work in one week

Answers

532.5/15
this will give you the hours in one week
= 35.5
Divide 532.5 hours by 15 weeks.
532.5/15 = 35.5

Vector worked 35.5 hours in one week.

A recipe requires 4 tsps and 1 fl oz. Which measurement is greater?

Answers

Answer: 1 fl oz is greater than 4 tsps.

Happy to help! :)
1 fl oz. s greater than 4 tsps but 6 tsps is the same as 1 fl oz.

Hope this Helped!

;D
Brainliest??

A crane is rented at $1000 per day plus a charge per hour of use. The crane was used for 7 hours on a day, and the total charge was $3450. Which equation can be used to find the charge x, in dollars, per hour of use?

Answers

The equation can be (3450-1000)÷7=350.

How do you find the product or quotient of powers with the same base?

Answers

Product: when you have the same base, the bases stay the same and you add the exponents together
Quotient: When dividing terms that also contain coefficients, divide the coefficients and then divide variable powers with the same base by subtracting the exponents (exponents from the denominator from numerator)

Can someone please help me with number 25

Answers

Answer:

x² + 10x + 24 = (x + 4)(x + 6)

b = 4 or 6

Which of the following shows of the slope of the line and one point on the line?

A. 6/5 and (-3, 1)
B. 5/6 and (1, -3)
C. 5/6 and (-3, 1)
D. -6/5 and (1, -3)

Answers

Answer is choice D

This is the only answer choice with a negative slope, so we don't even need to look at the point really. Though if you wanted, you can confirm that the point (1,-3) is on the diagonal line. This point is shown in red in the attached image.

To find that the slope is -6/5, you pick two points on the diagonal line and use the slope formula. Two points you can use are (1,-3) and (-4,3).
The slope formula is m = (y2-y1)/(x2-x1)

Note: The negative slope is because we move downhill as we move from left to right along the diagonal line.

The sum of 6 times a position number and 1 is the same as the sauare of 1 less than the number

Answers

If the number is x, then:
6x+1= (x-1)^2

Now we just need to simplify it
6x+1=(x-1)*(x-1)
6x+1=x^2-2x+1
8x=x^2
8=x

The number is 8.

To check the answer
6*8+1=7^2
49=49
correct :)

A rectangular prism has a length of 5 meters, a width of 6 3/4 meters, and a height of 3 1/2 meters. What is the volume of the prism?

Answers

The formula to find the volume of a rectangular prism is: l x w x h.

5 x 6.75 = 33.75    33.75 x 3.5 = 118.125

Your answer is: V = 118.125 m³

Answer:

118.13

Step-by-step explanation:

6 3/4= 6.75

3 1/2 = 3.5

This plot shows the number of cakes sold each day in aunt Alice’s cake shop last month.

What number of cakes sold is an outlier?

Answers

9- it’s the furthest from the cluster or common area of plots

Answer: 9

Step-by-step explanation:

An outlier is an observation point in any data plot that appears farthest from the other data observations.

In the given data plot, the plot shows the number of cakes sold each day in aunt Alice’s cake shop last month.

Here, we have one observation point that appearing farthest from all the other observation points i.e. point at 9.

Therefore the number of cakes sold is an outlier = 9

What is the slope of this line?

Answers

The slope of this line is -1 because it goes down one and to the right one
Slope = (y2-y1)/(x2-x1)
Well use the two points: (-2,0) , (0,-2)
Slope = (-2 - 0) / (0 - -2)
Slope = (-2) / (2)
Slope = -1

Diego has a large box that is 4 feet high, 3 feet wide, and 5 feet long. Can he fit 65 smaller boxes that each have a volume of 1 cubic foot in the large box?

Answers

Volume of the large box = 4 x 3 x 5 = 60 ft³

Volume of a cube = 1 ft³
Total number of cubes = 1 x 65 = 65 ft³

Answer: No, Diego cannot fit 65 smaller cubes into the large box. There will be 5 cubes that cannot be put in,


No, Diego cannot fit 65 smaller cubes into the large box. There will be 5 cubes that cannot be put in.

What is volume?

Volume in math is the amount of three-dimensional space occupied by an object, substance, or closed surface. Volume can be measured by multiplying the length, width, and height of an object or by counting the number of unit cubes it contains.

Given that, Diego has a large box that is 4 feet high, 3 feet wide, and 5 feet long, we need to determine whether he can fit 65 smaller boxes that each have a volume of 1 cubic foot in the large box,

For determining the same, we will find both volume and compare,

Volume of the large box = 4 x 3 x 5 = 60 ft³

Volume of a cube = 1 ft³

Total number of cubes = 1 x 65 = 65 ft³

Since, both the volumes are equal,

Therefore,

He cannot fit 65 smaller cubes into the large box, as he will be left with 5 boxes out of the box.

Hence, Diego can not put 65 boxes in the larger one.

Learn more about volumes, click;

https://brainly.com/question/13338592

#SPJ3

A factory makes 12 bottles every 2 minutes. The factory makes bottles for 8 hours each work day. Enter a whole number to represent the fewest number of work days the factory will need to make 28,000 bottles.

Answers

It will take 15 days to manufacture 28000 bottles.

We have a factory makes 12 bottles every 2 minutes and makes bottles for 8 hours each work day.

We have to determine the number of days it will take to make 28000 bottles.

What is Unitary Method?

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

According to question, we have -

Number of bottles manufactured in 2 minutes = 12.

In 8 hours = 8 x 60 = 480 minutes = 2 x 240 minutes.

Number of bottles manufactured in 1 day = 8 x 240 = 1920 bottles.

Number of days needed to make 28000 bottles = 14.58 = 15 days.

Hence, it will take 15 days to manufacture 28000 bottles.

To solve more questions on Estimations, visit the link below -

https://brainly.com/question/17135222

#SPJ2

What is the answer to part d. Thanks so much.

Answers

y=5/3x + 2 the 2 comes from where the point is on the y axis, the 5/3x comes from rise over run
y=5/3x-2. the 5/3 is the rise over run. the -2 comes from the downward shift in the graph, the previous answer is wrong.

Lisa is extending the width of her son's sandbox. it is currently a rectangle that is 2 yards long and 18 inches wide. she wants it to cover an area of 4 yd in total. by how does she have to increase the width to achieve new area?

Answers

1.5 yd should be increased to the width:

1yd=36inch

18inch×1yd/36inch=.5yd

lw=area


4yd²=2ydw

2=w

2-.5=1.5yd

A patrolman spends 25% every day completing paperwork. The patrolman’s shift each day is 8 hours. How much of his time does he spend doing paperwork each day?

Answers


[tex]8 \times 25\% \\ = 8 \times \dfrac{25}{100} \\ = 2[/tex]

Answer : He spends 2 hours doing paperwork each day.

Hope this helps. - M

mary draws the number line below to repersent the solution set of the inequality 50-8t<90
what mistake did Mary make?

Answers

50-8t<90 
50-90<8t
-40<8t
8t>-40
t>-5
Solutions should go to the right.
Mary probably was solving it as following
50-8t<90 
-8t<90-50
-8t<40  (here, when she divided both sides by -8, she had to change sign <  to the sign >)
But she did not change the sign, and got
t<-5

Can I have some help with this question?

Answers

-10(1-9x) +6(x-10)
-10+90x+6x-60

96x-70

so d is the answer
This question asks for distribution, which can be done by multiplying; then adding to the total.
-10(1-9x)=90x-10
6(x-10)=6x-60
(90x-10)+(6x-60)=96x-70 (same thing as -70+96x)
So, the answer is D. -70+96x
Have a nice day! ♪
Other Questions
what system allows you to walk, talk and breathe. The primary goal of the Centennial Accord of 1989 was to To lessen the growing power of socialism, Bismarck What is the central idea of this paragraph? Write 5.62 as a mixed number in simplest form Classify each number as rational or irrational.Drag the choices into the boxes to correctly complete the table. the word weigh sounds like the word way the words are Which number sentences could be used to solve this problem?Carrie is making 16 goodie bags for her party. She is putting 3 pencils and 2 erasers into each bag. What is the total number of objects she will put into the 16 bags?Choose exactly two answers that are correct. A.2 3 16 = B.(2 16) + (3 16) = C.16 (2 3) = D.16 (2 + 3) = Question 4 if 0.587 g of nickel metal reacts with 1.065 g of chlorine gas, what is the empirical formula of the nickel chloride product? ni2cl3 ni3cl2 nicl3 nicl nicl2 Which statement about the narrator of Homesick is correct? The narrator's perspective on America is shaped by her background, and her perspective causes her to expect a challenging future. The narrator's perspective on America is shaped by her grandmother's views, and her perspective causes her to expect a difficult life. The narrator's perspective on America is shaped by her previous experiences there, and her perspective causes her to expect an enjoyable life. The narrator's perspective on America is shaped by her education, and her perspective causes her to expect an exciting future. Irma needs to rent a car for a business trip from phoenix to san jose (720 miles one way). she will drive round trip and will be gone a total of 8 days. the car rental company charges $65.00 per day and allows for 1,600 miles for irmas's trip. there will be an additional charge of $0.24 per mile over the 1,600 miles allowed. how many total miles can she drive without exceeding her budget of $600.00? hey can you please help me posted picture of question Explain the moral hazard problems inherent in responding to a crisis A computer screen has a diagonal length of 17 in. and a height of 9 in. To the nearest tenth of an inch, what is the area of the screen? On the 4th of July, the probability of a person having a car accident is 0.08. What is the probability of a person driving while intoxicated or having a car accident if the probability of a person driving while intoxicated is 0.25 and the probability of a person having a car accident while intoxicated is 0.13? In Mr. Diaz's classroom, the desks are arranged in 4 rows with 7 desks in each row. Each desk has 2 pencils on it. How many total pencils are there on all the desks? What are some religious holy places for Jews , Christians, and Muslims in this subregion? a 4 kilogram cat is resting on top of a bookshelf that is 3 meters high what is the cats gravitational potential energy relative to the floor if the acceleration due to gravity is 9.8m/s A.7j B. 29j C.12j D.118j divide 660 g in the ratio 4 : 7 What is the equivalent decimal?Drag the answer into the box to match the fraction. 5/45