Answer:
its b i took the test
Step-by-step explanation:
its b
expand and simplify a(a+2)
Answer:
a²+2a
Step-by-step explanation:
multiple a with a and 2
a. For y = 5+ 80 when x = 4, what does y equal?
b. For a = 3 - 5c when c = -0.5, what does a equal?
c. For n = 2d2 – 5 when d = -2, what does n equal?
n
d. For v = -3(1 – 3) when r = -1, what does v equal?
a. y = 5x + 80 = 5*4 + 80 = 20 + 80 = 100
b. a = 3-5c = 3 - 5*(-0.5) = 3 - (-2.5) = 3 + 2.5 + 5.5
c. n = 2d² - 5 = 2*(-2)² - 5 = 2* 4 - 5 = 8 - 5 = 3
d. v = -3(1-3r) = -3(1-3(-1)) = -3(1+3) = -3*4=-12
Compare the fractions.
10\14,3\7
Enter the correct inequality in the box.
Answer:
10/14 > 3/7
Step-by-step explanation:
L.C.D of these two fractions is 14:
10/14 = 10/14
3/7 = 6/14
10 is bigger than 6.
1) Order the numbers from least to greatest.
=2
3
3.5
2.5
2
NI
PLEASE HELP
Answer:
2, 2, 2.5, 3, 3.5
Step-by-step explanation:
Answer:
2, 2.5, 3, 3.5
Even thought there are two "2's", you only list one making it 2,2.5,3,3.5 instead of 2,2,2.5,3,3.5
The sum of first four terms is a G.P. is 30 and that of the last four terms is 960. if its first term is 2 find the common ratio .
If the sum of first four terms in a G.P. is 30 and that of the last four terms is 960, then the sum of the first 8 terms is 990
We also know that a = 2
sum of first 4 terms
= 2(r^4 - 1)(r-1) = 30
r^4 - 1 = 15r - 15
r^4 - 15r + 14 = 0
r = 1 works for the equation , but r = 1 would make all the terms of the
GP the same, so clearly not a solution
r^4 - 15r + 14 = 0 , a bit of trial and error ....
(r-1)(r - 2)(r^2 + 3r + 7) = 0
so r = 2 or r = not real
check: sum(4) = 2(2^4 - 1)/(2-1) = 30 , as needed
so r = 2 , BUT it does not work for sum(8)
sum(8) = 2(2^8 - 1)(2-1) = 510 , not 990 as necessary according to your second part of the question.
check your question.
Can someone please help me with this
Answer:
f(x) = 3x +4f(x) = 5x +2f(x) = -4x +11f(x) = -4x +11 (same table as problem 3)Step-by-step explanation:
To write the equation for f(x) in slope-intercept form, you need to know the slope and the y-intercept. The y-intercept is the value of f(x) when x=0. You can read this directly from the table.
The slope is the ratio of the change in f(x) to the change in x. It can be computed using the formula ...
m = (y2 -y2)/(x2 -x1)
where (x1, y1) and (x2, y2) are any two pairs of numbers from the table. You can use the first two table rows, for example.
__
1. m = (10 -4)/(3 -0) = 6/3 = 2; y-intercept = 4 (from ordered pair (0, 4))
y = mx +b . . . . line with slope m and y-intercept b
f(x) = 2x +4
__
2. m = (2 -(-3))/(0 -(-1)) = 5/1 = 5
f(x) = 5x +2
__
3. m = (11 -19)/(0 -(-2)) = -8/2 = -4
f(x) = -4x +11
__
4. same as 3.
I need help finding this answer
y = -2x - 4
--> Swap sides so that all variable terms are on the left hand side
-2x - 4 = y
--> Add 4 to both sides
-2x = y + 4
--> Divide both sides by -2
-2x/-2 = y+4/-2
--> Dividing by -2 undoes the multiplication by -2.
x = y+4/-2
--> Divide y+4 by -2
x = -y /2 -2
-------------------------------------------------------------
y = 1/4x + 5
--> Swap sides so that all variable terms are on the left hand side.
1/4x + 5 = y
--> Subtract 5 from both sides.
1/4x = y - 5
--> Multiply both sides by 4.
1/4x 1/4 = y - 5/ 1/4
--> Dividing by 1/4 undoes the multiplication by 1/4.
x = y - 5/ 1/4
--> Divide y - 5 by 1/4 by multiplying y - 5 by the reciprocal of 1/4.
x = 4y - 20
Hope this helps you!
Help me on this, please?
Answer:
angle 6 is 117
angle 7 is 63
Step-by-step explanation:
Owen is driving to a concert and needs to pay for parking. There is an
automatic fee of $12 just to enter the parking lot, and when he leaves the lot,
he will have to pay an additional $3 for every hour he had his car in the lot.
How much total money would Owen have to pay for parking if he left his car
in the lot for 5 hours? How much would Owen have to pay if he left his car in
the lot for t hours?
Cost of parking for 5 hours:
Cost of parking for t hours:
Answer:
$39
Step-by-step explanation:
because 12 enter and leave is 24 then 3 per he that is 39$
SOLVE FOR f
3/5 · f = 1 5/7
Answer:
f = 2 6/7
Step-by-step explanation:
[tex]\dfrac 35 \cdot f = 1 \dfrac 57 \\\\\\\implies \dfrac{3f}5 = 1 + \dfrac 57 = \dfrac{12}7\\\\\\\implies 21f = 60\\\\\implies f = \dfrac{60}{21} = \dfrac{20}7 = 2 \dfrac 67[/tex]
What multiple of five is also a factor of five
Hello, hope you are having a remarkable day. :)
These are the multiples of 5:
5, 10, 15, 20, 25, 30, 35...
These are the factors of 5:
1, 5
As we can see, the number 5 is both a multiple of 5 and a factor of 5.
Hope it helps. Ask me if you have any queries.
~An emotional teen who helps others with joy
Good luck.
What is slope ? Help me please
Answer:
Step-by-step explanation:
The slope of a line is a measure of its steepness. Mathematically, slope is calculated as "rise over run" (change in y divided by change in x). there you go.
8 less than 4 times a number is 76. Find the number.
Answer:
the answer is twenty one
I need help please !
Answer:
y column: 1st = -7 , 2nd = -5 , 3rd = -3 , 4th = -1 , 5th = 1
volume of a cube is 343 cm cube . find the edge
Answer:
Edge: 7 cm
Step-by-step explanation:
Cubic root of 343 = 7
Harper is knitting a scarf for her cousin's birthday. She plans to knit every night, making the scarf 5 centimeters longer each night. Write an equation that shows the relationship between the number of nights Harper spends knitting, x, and the length of the scarf in centimeters, y.
The equation that shows the relationship between x and y is:
y = 5x
A linear equation is in the form:
y = mx + b
where m is the rate of change and b is the initial value of y, y, x are variables.
Let x represent the number of nights knitting and y represent the length of the scarf.
The equation that shows the relationship between x and y is:
y = 5x
Find out more at: https://brainly.com/question/13911928
hurry please im dead meat if i cant do this picture below
Answer:
4 divided by 1/8
hope it helps
Step-by-step explanation:
A bag contains 12 identical marbles consisting of an equal number of red, green and yel low marbles. A marble is picked at random from the bag. a) Are all the outcomes equally likely? Give a reason for your answer?
Answer:
yes the outcomes are equally likely
Step-by-step explanation:
12 = red yellow green
12 = 3
12/3
4
red balls are 4
yellow balls are 4
green balls are 4
so the outcome is equal for all the colour of the balls
Work out
(
7
×
10
−
3
)
−
(
4
×
10
−
5
)
Give your answer in standard form.
Answer:
32
let me know if its correct!
Write 5×100+9×1+3×1/100+7×1/1000 in standard form
Answer:
512.017
Step-by-step explanation:
Just multiply all the numbers and add them as you go along to make one number.
Please help im in a hurry
Answer:
I can't explain this discrepancy other than to suggest that they are talking about 2 different groups. The boss has included his salary in the average, but the employee is only concerned about the wage of the average worker.
Step-by-step explanation:
what is the value of a in a/5 + 3= 8
Answer:
Step-by-step explanation:
what is the value of a in a/5 + 3= 8
a/5 + 3= 8
a/5 = 8 - 3
a/5 = 5
a = 5 * 5
a = 25
Answer: a= 25
Step-by-step explanation:
first, you'll have to write the opposite of the + symbol which is - and then you'll have to lose the 3 by substracting it with, so the equation will look like this: a/5= 8-3 not 8+3
a/5=5
after that step you'll have to multiply 5 from the equal sgin with the 5 that is divided by a, so the final equation looks like this:
a=5x5
a=25
now let's make a verification:
25/5+3=8
5+3=8
a=25
hope I helped you :)
May I please get help i really dont understand, and would like some help
Please and thank you!
Answer:
8 days
Step-by-step explanation:
Every day, 1.26 stock is returned. You want to find the number of days until it reaches 10.08, so create an equation. x represents days.
1.26 * x = 10.08
x = 8
Nadine received the same score on each turn in an online game. Her score on each turn was −24. She had 4 turns.
What was Nadine's final score?
Answer:
Step-by-step explanation:
-24 x 4 = -96
2315 x 584 / 591 x 841
Answer:
About 2.72 rounded
Step-by-step explanation:
PEMDAS
:))
write a recursive formula for this sequence
2.3, 2.8, 3.3, 3.8, ...
Answer: 2.3
Step-by-step explanation: 3.8-3.3 =3.3-2.8=2.8-2.3=0.5 (common difference)of arithmetic sequence
a recursive formula for the sequence is : An+1=An +0.5
Write the following phrase as an algebraic expression. Use k for the unknown.
"The product of 20 and a number"
Answer: 20k
Step-by-step explanation: product means to multiply. Use k for the unknown number. 20 times k can be written as 20k.
here are 8 cardsthere is a number on each of these 6 cards
Answer:
I don't knowStep-by-step explanation:
sorry I apologize
A number is 5 less than 2 times another number. Their sum is 25. What are the 2 numbers ?
Answer:
I don't understand the question but I think the answer is either 10 or 30
I lowered the points because people were stealing them.
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
Domain ~
[tex] - 6 \leqslant x \leqslant - 1[/tex]Range ~
[tex] - 5 \leqslant x \leqslant - 3[/tex]