All of the following expressions are equivalent, except ______.
x - 7
7 + (-x)
-x + 7
7 - x
Answer:
x - 7
Step-by-step explanation:
Let's let x = 4 and see which one would be different
x - 7 = 4 - 7 = -3
7 + (-x) = 7 + -4 = 3
-x + 7 = -4 + 7 = 3
7 - x = 7 - 4 =3
As you can see, the top answer would be negative while all the rest are positive. This is because, in that case, the negative sign was attached to the 7 instead of the x.
Answer:
x - 7
Step-by-step explanation:
Give the parallel slope of the given line. (PLEASE SHOW HOW YOU GOT THIS ANSWER)
3y = 4x - 9
Answer:
m=4/3
b=-3
Step-by-step explanation:
3y=4x-9
3÷3
4÷3
-9÷3
y=4/3x-3
Please help I’ll mark you as brainliest if correct!!
Answer:
2 handshakes
Step-by-step explanation:
10 divided by 5 is 2
Three small squares are drawn inside a larger square as shown. What is the length of the line marked with a question mark?
Answer:
19
Step-by-step explanation:
let the smallest square be A, medium square is B and the largest is C ;
as the length side of the main square is 28, we can find that,
A= 28-22 = 6
C= 28-15 = 13
So to find B,
A+B+C = 28
B = 28-A-C
B = 28-6-13 = 9
So the line with questioned mark is,
28-9 = 19
What is the function the matches the graph?
Between what integers is number 4.6?
Between what integers is number -2 1/3?
Answers please
Answer:
4.6 is between 4 and 5
-2 1/3 is between -2 and -3
Step-by-step explanation:
That is the numbers around them in a number line
22. What is the product of (8-37(3 + 21)
Answer:
I believe its -800, but i'm not sure.
What is the net force for this free body diagram below?
find the product of (5t-3) and (3t +7) when t = 6
Answer:
675
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightStep-by-step explanation:
Step 1: Define
(5t - 3) · (3t + 7)
t = 6
Step 2: Evaluate
Substitute in t: (5(6) - 3) · (3(6) + 7)(Parenthesis) Multiply: (30 - 3) · (18 + 7)(Parenthesis) Subtract: 27 · (18 + 7)(Parenthesis) Add: 27 · 25Multiply: 675Answer:
(5t -3)(3t+7) (im multiplying them together, if that's not what the questions asking lmk. but anyway, put them next to eachother and then plug in 6 for t)
(5(6) -3)(3(6)+7) (multiply where possible)
(30 -3)(18+7) (use the distributive property/foil to multiply the two)
540 +210 -54 -21 (add the positive numbers and subtract the negative )
750 - 75 (subtract)
675 (the answer)
Step-by-step explanation:
I hope this helps :)
Mr Jones has 160 animals on his farm of these animals 20% of cows 30% of gold 10% are horses and the rest are chickens how many chickens are there
Answer:
64
Step-by-step explanation:
32 cows . 48 gold? 16 horses
32+48+16 = 96
160-96 = 64
Answer:
There are 64 chickens
Step-by-step explanation:
20% of 160 is 32 30% of 160 is 48 and 10% of 160 is 16. So 32 + 48 + 16=96.
160-96 = 64
The SAT is standardized to be normally distributed with a mean µ = 500 and a standard deviation σ = 100. What percentage of SAT scores falls:_____.
a. Between 500 and 600? the answer says 34.13% <<< how do you get to that???
b. Between 400 and 600?
Answer:
34.134%
68.268%
Step-by-step explanation:
Given that:
Mean (m) = 500
Standard deviation (s) = 100
Percentage between 500 and 600
P(500 < x < 600)
P(x < 600) - P(x < 500)
Z = (x - m) / s
P(x < 600)
Z = (600 - 500) /100 = 1
P(x < 500)
Z = (500 - 500) / 500 = 0
P(Z< 1) - P(Z < 0)
0.84134 - 0.5
= 0.34134
= 0.34134 * 100%
= 34.134%
B.) Between 400 and 600
P(x < 400)
Z = (400 - 500) /100 = - 1
P(x < 600)
Z = (600 - 500) / 500 = 1
P(Z< 1 ) - P(Z < - 1)
0.84134 - 0.15866
= 0.68268
= 0.68268 * 100%
= 68.268%
pretty please help.
What is the area of the of the object above ?
A. 98 sq cm
B. 54 sq cm
C. 104 sq cm
D. 90 sq cm
Answer:
the answer is d
Step-by-step explanation:
basically dived that shape to 2 peices.
the big rectangle: 12 x 7 = 84
the small rectangle: 2 x 3 = 6
then add these 2 areas together to get the area of the object: 84 + 6 = 90
therfore, teh area of the object is 90 sq cm
mark brainliest plz :P
some one plzz help this is my third time asking this question
Answer:
everyone clickin cuz its a lot of points
Step-by-step explanation:
Answer:
I don't really know it but if you use socratic I will find the answer for you
Point T is the midpoint of A B If TB = 6, find the length of AB.
Answer:
12
Step-by-step explanation:
TB= TA
6= TA
TA+TB= AB
6+6=12
Put the following portions in order from least to greatest 30% 1/5 75% 5/6
Answer:
1/5,30%,75%,5/6
Step-by-step explanation:
first turn all of them in to decimals:
1/5=0.20
30%=0.30
75%=0.75
5/6=0.83
then put the decimals in order from least to greatest
done!
If a line bisects DF at E with the coordinates D (5.-10) and F(-1,0), what are the coordinates
of the midpoint, E?
[A] (-3,5)
[B] (2,-5)
[C] (3.-5)
[D] (4,-10)
[E] (6-10)
After dinner 2/3 of a pan of lasagna is left. The whole pan of lasagna was originally cut into pieces 1/6 of the pan. Which equation represents the number of pieces of lasagna that are left after dinner
Answer:
There are 4 pieces of lasagna left
work out the equation of the line which passes through the point (-1,2) and is parallel to the line y=x+4
Answer:
Y=x+3
Step-by-step explanation:
Substitute c=3 and m=1 in eqn 1
y=1x+3
y=x+3
Thus the required equation of the line is found
as an estimation we are told £3 is €4. Convert €52 to pounds.
Answer:
its £39
Step-by-step explanation:
Find the circumference and area of each circle. Use your calculator's value of t. Round your answer to the nearest tenth. Circumference 9m
Answer: Duno
Step-by-step explanation:
Deanne went bowling and hit 8/10 of the pins down. What percentage of pins were knocked down?
Answer:
80%
Step-by-step explanation:
Multiply 8 and 10 by 10 and it'll be 80/100 which is also known as 80%
a music store sells a used guitar for $120. This is $25 more than 1/2 the cost of a new guitar of the same brand. what is the cost of a new guitar?
Answer:
$190.
Step-by-step explanation:
We can write the equation 120=25+1/2n where n is the cost of a new guitar. First, we subtract 25 from both sides to get 95=1/2n. Then, we multiply both sides by 2 to get 190=n. Therefore, the cost of a new guitar is $190.
Which best describes the figure that is represented by the following coordinates
A(—3,4) B (3, 4) C (3, —2) and D (—3 —2)
Answer: Rectangle
Reasoning: 4 straight sides, 2 pairs of sides of equal length.
While Jackie was in Hawaii, she would dive for shells. One afternoon she dove −7.8 feet. Her next two dives were each 2 1/8 feet deeper than the dive before it. What were the depths of her second and third dives?
Dive 2: ? ft
Dive 3: ? ft
Answer:
Dive 2: -9 37/40 feet
Dive 3: -12 1/20 feet
Step-by-step explanation:
To solve this, we subtract 2 1/8 from -7.8 twice. First, convert -7.8 to a mixed number, that gets us -7 8/10. Now, we find the LCM of 8 and 10. That is 40. Now, we multiply 1/8 by 5/5 to get 5/40. Now, we multiply 8/10 by 4/4 to get 32/40. Now, we subtract 2 5/40 from -7 32/40. This gets us -9 37/40. That means Dive 2 was -9 37/40 feet. Now, we subtract 2 5/40 from -9 37/40. That gets us -12 2/40. We can simplify that to -12 1/20. That means Dive 3 was -12 1/20 feet.
I need help ASAP, marking brainliest!
what is an absolute value
Answer:
the magnitude of a real number without regard to its sign
Step-by-step explanation:
An example would be :
-16 =[16]
Tanya earns $12.25 per hour shoveling snow. Which of these represents how much she earns for 3 hours of shoveling?
Answer:
$36.75
Step-by-step explanation:
12.25×3=36.75
12.25 per hour to find 3 hours you multiply by 3 which is 36.75
((3+2)^2+2)-2^2=
A. 40
B. 23
C. 24
D. 50
Answer:
23
Step-by-step explanation:
((3+2)^2+2)-2^2
5^2
25+2=27-4=23
For a certain recipe, Ben takes a 5 1/2 -cup sack of sugar and uses all but 1 3/4 cups.
Which of these also describes the amount of sugar used in Ben's recipe?
I need the answer ASAP
Answer:
swedwedvads
Step-by-step explanation:
evEVevwq
Isaac invested $1,800 in an account paying an interest rate of 4.7%
compounded continuously. Assuming no deposits or withdrawals are
made, how much money, to the nearest hundred dollars, would be in
the account after 15 years?
Answer:
$3584.86 or 3600 if rounded to the nearest 100 dollars
Step-by-step explanation:
1800(1.047)^15= 3584.86
you can plug this into a calculator
Answer:
3600
Step-by-step explanation:
\text{Compounded Continuously:}
Compounded Continuously:
A=Pe^{rt}
A=Pe
rt
P=1800\hspace{35px}r=0.047\hspace{35px}t=15
P=1800r=0.047t=15
Given values
A=1800e^{0.047(15)}
A=1800e
0.047(15)
Plug in
A=1800e^{0.705}
A=1800e
0.705
Multiply
A=3642.92403286
A=3642.92403286
Use calculator (with e button)
A\approx 3600
A≈3600
Round to nearest hundred dollars