Answers
refer to steps for answer!
Step-by-step explanation:
you just have to put the given values in place of the variable names and then simply calculate.
(-2² + 2²) - 2(-2² - 2²) = (4 + 4) - 2(4 - 4) = 8 - 2×0 = 8
so, B is the right answer.
please remember the correct sequence of operations :
first are brackets.
then exponents.
then multiplications and divisions.
and then (at last) additions and subtractions.
and also please remember : multiplying a negative number with a negative number creates a positive result.
that is of course also true for squaring a negative number, as ² just means that the negative number is multiplied with itself.
now you also know the result of -2³, right ?
as this means -2 is multiplied 3 times by itself. what does that do to the sign ?
-2 × -2 = 4 (positive).
but now we have to multiply a third time
4 × -2 = -8 (because multiplying a positive number with a negative number creates a negative result).
Related Questions
Sasha wants to know her average grade on her math tests. She earned a score of 70 on two tests, an 80 on one test, and a 90 on two tests. What is Sasha’s mean score?
A.70
B.75
C.80
D.90
Answers
Answer: c. 80
Step-by-step explanation:
Answer:
80
Step-by-step explanation:
First add all of the the test results 70+70+80+90+90=400 then you divided by how many test their were so 400/5=80
I need help with this pls
Answers
Answer:
b. y =2x
Step-by-step explanation:
Answer:
b. y =2x
Step-by-step explanation:
this is the last question for the day I promise!!!!
Answers
Answer:
I think the answer is 13
Step-by-step explanation:
extra point brainllyest plz answer asap 4 2/5 + 5 2/6
Answers
explanation:
4+5 is 9 so leave that aside for now
since both 2/5 and 2/6 have a different denomination you have to find the common denomination. the common denomination is 30 because it’s the LCM for both 5 and 6.
Since you multiplied the 5 by 6 you now have to multiply your numerator by 6 which will give you 12/30 and do the same with the 2/6 but instead multiply it by 5 which is 10/30 and then add them together 22/30 after you can simplify them to 11/15 by dividing the numeration and denominator by 2
After that you can convert the fraction into a decimal which would be 0.7333 but since you can round it off and make a shorter answer you have 0.73
Lastly,Don’t forget to add your 9 that we had in the begging which is not 9.73 :)
Hellppp meeeeeeee PLEASEEEEE:c.
Answers
You can give the unknown value as x to make things easier
( x + 1.75 ) / 2 = -5.1
Find the value of x:
x + 1.75 = –5.1 x 2
x + 1.75 = -10.2
x = -10.2 – 1.75
x = -11.95
Not sure abt the simplified mixed number sorry tho -11.95 gives an answer of -239/20 on a calc
Answer: Answer is -11.95
You can give the unknown value as x to make things easier
( x + 1.75 ) / 2 = -5.1
Find the value of x:
x + 1.75 = –5.1 x 2
x + 1.75 = -10.2
x = -10.2 – 1.75
x = -11.95
:)
Step-by-step explanation:
Which comparisons are true? Select all that apply.
A.
7
.
34
>
7
.
304
B.
1
.
628
>
1
.
63
C.
4
.
05
<
4
.
055
D.
9
.
103
<
9
.
13
E.
2
.
29
<
2
.
129
Answers
Answer:
A is true. C is true. D is true
Step by-step explanation:
Chicago, Illinois, has an elevation of 600 feet above sea level (zero feet). The elevation of Desert Shores, California, is 800 feet less than the elevation of Chicago.
Which statement is true about Desert Shores?
the elevation is -200 feet
the elevation is 200 feet
the elevation is at 1400 feet
the elevation is at -1400 feet
Answers
Answer:
The elevation is -200 feet.
Step-by-step explanation:
600 - 800 = -200
HELP HELP HELP HELP!!!!
Answers
Answer:
99 x 29 = 2871
Step-by-step explanation:
he could multiply 29 by 99
In pea plants, the gene for the color of the seed has two alleles. In the following Punnett square shown below, the dominant allele (Y) represents yellow and the recessive allele (y) represents green.
Based on the Punnett square, what percentage of offspring would be expected to have green seeds?
Screenshot below if u don't understand and the diagram :)
Answers
Drag each bar to the correct location on the graph. Each bar can be used more than once. Not all bars will be used.
Ella surveyed a group of boys in her grade to find their heights in inches. The heights are below.
have a grate day and thx for helping
67, 63, 69, 72, 77, 74, 62, 73, 64, 71, 78, 67, 61, 74, 79, 57, 66, 63, 62, 71 ,73, 68, 64, 67, 56, 76, 62, 74
Create a histogram that correctly represents the data.
Reset Next
Answers
Answer:
Here is what I got...
Step-by-step explanation:
HELP PLEASE I CAN'T UNDERSTAND I WILL GIVE YOU BRAINLIEST PLEASE HELP
Answers
Answer:
a. 1/27 b.3 1/2
Step-by-step explanation:
a.1/3*1/3*1/3=1/(3^3)=1/27
b.2 1/3*1 1/2*1= 3 1/2
Answer:
a.1/3*1/3*1/3=1/(3^3)=1/27b.2 1/3*1 1/2*1= 3 1/2Step-by-step explanation:
what is 55x63x95x34 help mee
Answers
Answer:
11191950
Step-by-step explanation:
Multiple 55 by 63 which gets you 3456 then you multiplay it again with 95 giving you 329175 and now finally you multiply 34 to it to get 11191950.
Jessica purchased a book that was on sale for 12%. The sales tax is 3% key y represent original price of the book write an expression that can be used to determine the final cost of the book.
How do I do this, I don’t need a answer just how to do I it lol
Answers
Answer:
What is a sales tax decalculator?
Step 1: take the total price and divide it by one plus the tax rate.
Step 2: multiply the result from step one by the tax rate to get the dollars of tax.
Step 3: subtract the dollars of tax from step 2 from the total price.
Pre-Tax Price = TP – [(TP / (1 + r) x r]
TP = Total Price.
Step-by-step explanation:
ANSWER THIS YOU GET 10 POINTS
Answers
Remember PEMDAS (Order of Operations)
first you take the (1+2) and add them together
then remove the brackets and since the 3 is infront of the 2 they will multiply
the equation looks like this
6/2x3 now answer it from left to right.
the answer becomes 9
A dugout needs to reach at least 72 feet below ground level. This means it needs to be more than 4 1/2 times its current depth. This depth is represented by the inequality 4 1/2 d < -72, where d is the current depth of the dugout.
The current depth of the dugout is ________ area feet below ground level.
Greater than 16
Fewer than 16
Greater than -16
Fewer than -16
Answers
Answer:
The answer i got is this -16 2/3, which i think is greater than -16
The ongoing profundity of the hole is less than the negative region feet subterranean level. Then the right choice is D.
What is inequality?Inequality is defined as an equation that does not contain an equal sign. Inequality is a term that describes a statement's relative size and can be used to compare these two claims.
A hole needs to arrive at no less than 72 feet subterranean level. This implies it should be multiple 1/2 times its ongoing profundity. This profundity is addressed by the imbalance 4 ¹/₂ d < - 72, where d is the ongoing profundity of the burrow.
4 ¹/₂ d < - 72
Simplify the inequality, then we have
4 ¹/₂ d < - 72
4.5d < - 72
d < - 72 / 4.5
d < - 16
The ongoing profundity of the hole is less than the negative region feet subterranean level. Then the right choice is D.
More about the inequality link is given below.
https://brainly.com/question/19491153
#SPJ2
..........................................................
Answers
Answer:
6/10
Step-by-step explanation:
60% of 100 is equal to 6/10
Two school groups go to a roller skating rink. One group pays $243 for 36 admissions and 21 skate rentals. The other group pays $81 for 12 admissions and 7 skate rentals. Let x represent the cost of admission and let y represent the cost of a skate rental. Is there enough information to find values for x and y? Explain.
thxs
Answers
Answer:
No
There are infinitely many solutions to the system.
{36x+21y=24312x+7y=81
Multiply the second equation by 3.
3(12x+7y36x+21y=81)=243
Subtract this new equation from the first equation.
36x+21y−(36x+21y0+0=243=243)=0 true
There are infinitely many values of x and y are possible.
What is the system of equations?One or many equations having the same number of unknowns that can be solved simultaneously called as simultaneous equation. And simultaneous equation is the system of equation.
Given:
Two school groups go to a roller skating rink.
One group pays $243 for 36 admissions and 21 skate rentals.
The other group pays $81 for 12 admissions and 7 skate rentals.
Let x represent the cost of admission and let y represent the cost of a skate rental.
We have a system of equations,
36x + 21y = 243 {equation 1}
12x + 7y = 81 {equation 2}
Simplifying equation 1 we get,
36x + 21y = 243
Divide by 3,
12x + 7y = 81
That means, there are infinitely many solutions possible.
Therefore, there are infinitely many solutions possible.
To learn more about the system of equation;
brainly.com/question/13729904
#SPJ2
what is the slope on an equation
Answers
Answer:
Formula
Slope of a line
Once your equation is in slope-intercept form: "y = mx+b", the coefficient of "x" (the "m") is the slope. The constant (the "b") is the y-intercept at (0, b).
Step-by-step explanation:
slope= dy/dx
=y2-y1/x2-x1
Pls help me with some questions, so please answer 1 2 and 14 thank you!! Also this is due in 8 mins
Answers
Answer:
Answer B
Step-by-step explanation:
Answer: C (I think) and the slope is 2/5, the points on the graph are (0,0) (5,2) (10,4) (15,6)
Step-by-step explanation: Nothing is being multiplied in the equation like in the other two answers, and slope is always change in y/change in x
Look at the question, please orginize it in a good manner. NO LINKS!
Answers
Answer:
for the first one its right 2 down 5
for the second one its right 5 down 2
for the third one its left 2 up 5
i hope this helps pls tell me if im wrong
1) right 2 down 5
2) right 5 down 2
3) left 2 up 5
Miguel and his family are driving to a family resort. This trip is 822 miles long. They will stop every 205 miles for gas. About how many times will they stop?
Answers
Answer:
4 times
Step-by-step explanation:
822/205= 4 R2
Select the locations on the number line to plot the points 2, 1, and −4 .
Answers
Answer:
-5-4-3-2-1 0 1 2 3 4 5
Step-by-step explanation:
Step-by-step explanation:
look at the picture
hope it helps you.
Find 3y+x if 2x-3y=12 and 8x+3y=14
Answers
Answer:
check the photos.
but if you substitute your x and y into the equation, your answer will be = -6/7
8x+3y=14 8x+3y=14
-15y=34
- 1/3 (4+z)=-5/6
plz will mark as brainlest
Answers
Answer: = − 3 /2
Precalculus, Matrix
Rearrange terms, Combine multiplied terms into a single fraction, distribute, Multiply all terms by the same value to eliminate fraction denominators, Multiply all terms by the same value to eliminate fraction denominators . Cancel multiplied terms that are in the denominator . Multiply the numbers . Add 4 to both sides of the equation . Simplify.
Divide both sides of the equation by the same term . Simplify
Answer:
z = -3/2
Step-by-step explanation:
Our goal here is to solve -1/3 (4+z)=-5/6 for z.
Begin by multiplying both sides by 6, to eliminate the fractions:
-2(4 + z) = -5
Isolate (4 + z) by dividing both sides by -2: 4 + z = 5/2
Finally, determine z by subtracting 4 from both sides: z = 5/2 - 8/2 = -3/2
z = -3/2
I need help question istheimage attached
Answers
Answer:
length= 35 feet and width= 10 feet
Step-by-step explanation:
You are given the perimeter of the rectangular deck is
90 feet.
2 x length + 2 x width = 90 You are also given that the deck's length is 5 feet less than 4 times it's width. That is length = 4 x width - 5
Those two equations are your system of linear equations. The second equation can be plugged into the first equation. This gives us an equation entirely in terms of width.
2x (4 x width - 5) + 2 x width =90
Distribute the 2 though
8 x width - 10 + 2 x width = 90
Combine like terms with width.
10 x width - 10 = 90
Add 10 to both sides.
10 x width = 100
Divide both sides by 10 width = 100
Now you can plug width into your original equation for length above. Recall: length = 4 x width - 5
Length = 4 x 10 - 5
Length = 40 - 5
Length = 35
Ski tour sales at an agency went from $12,500 in January to $8,700 in February. Enter the value to make a true statement. Round to the nearest whole percentage.
Answers
Answer:
70%
Step-by-step explanation:
8,700/12,500= 0.696
0.696 x 100 = 69.6%
69.6 estimated = 70%
An account with an initial balance of $4000 earns 6.5% interest for 5 years.
What is the ending balance?
Enter your answer in the box.
$
Answers
The ending balance is $5,480.
What is 10.5625 as a fraction? Show all steps and reason why.
Answers
Answer:
[tex]10\frac{9}{16}[/tex]
Step-by-step explanation:
Step 1 of 2- Convert decimal to fraction
10.5625 = [tex]\frac{105625}{10000}[/tex]
Step 2 of 2: Simplify
[tex]\frac{105625}{10000}[/tex] = [tex]\frac{169}{16}[/tex] = [tex]10\frac{9}{16}[/tex]
Thank you pls don’t send any links
Answers
Answer:
Option 4: 10d + 5
Step-by-step explanation:
Given the algebraic expression, 5(2d + 1), which represents the fines per day, d, for overdue books.
In order to determine the equivalent algebraic expression of 5(2d + 1), we must distribute 5 into the terms inside the parenthesis:
5(2d + 1)
= 5(2d) + 5(1)
[tex]\fbox{\textsf{= 10d + 5 }}[/tex]
Therefore, the equivalent expression is: 10d + 5.
Yessssssss
What is the solution to the equation?
−24x=−4
Enter your answer in the box.
Answers
You simplify it