Answer:
hola hi
La verdad no se Inglés y no te podría ayudar
f(x) = -x2 - 10x find f(-7)
Answer:
119
Step-by-step explanation:
f(x)= -x²-10x
f(-7)= -7²-10(-7)
7²= -7*-7 -10*-7
f(-7)=49+70
f(-7)=119
Two trains leave stations 204 miles apart at the same time and travel toward each other. One train travels at 90 miles per hour while the other travels at miles per hour. How long will it take for the two trains to meet?
Answer:
t = 1.23 hours
Step-by-step explanation:
Given that,
Distance between two stations is 204 miles
One train travels at 90 miles per hour while the other travels at 75 (let) miles per hour.
We need to find how long will it take for the two trains to meet.
As both cars travel toward each other, it means they approach with a speed of 90 mph + 75 mph = 165 mph.
Let t is the time when they meet. So,
[tex]t=\dfrac{d}{v}\\\\t=\dfrac{204}{165}\\\\t=1.23\ h[/tex]
It will take 1 hour 23 minutes for the trains to meet.
If you are trying to decide whether a system of equations has a solution, would you rather have the equations or the graphs? Why?
When determining if the set of equations has a solution, this is when graphing is the best method to be used.
What are linear equations in two variables?If an equation is written in the form axe + by + c=0, where a, b, and c are real integers and the coefficients of x and y, i.e., a and b, respectively, are not equal to zero, then it is said to be a linear equation in two variables.
When there is a system of equations, there are mainly three solutions for equations that are,
no solution, unique solution, and infinitely many solutions,
these solutions can be found by solving the equations or comparing their variables, hence the process takes more time,
but the same process for finding the solutions can be done by graphing method and it is easy as compared to the above method because,
As it offers the visual to record what they have actually looked for, it was seen to be the greatest way at the time it was taught to new students for solving the system of two equations in two variables.
Hence graph method is best to find the solution to equations.
Learn more about linear equations in two variables;
https://brainly.com/question/24085666
#SPJ2
Please help Graphing slope intercept
Answer:
i think it i the 2nd one.
Step-by-step explanation:
Determine whether or not the relationship represents a function.
Ay
A
Function
B
Not a function
can anyone help me? (:
Answer:
I think its b
Step-by-step explanation:
Answer:
this answer is b
Step-by-step explanation:
have a good day
Look at the image of the table of values below. Over which interval of x is the average rate of change the largest?
Between 5 & 8.
[tex]\displaystyle {21-15\over 8-5} = 6/3 = 2[/tex] is the largest rate of change, differentiating from [tex]5\over3[/tex] and [tex]11\over6[/tex]
Malia is out shopping and finds a drone originally valued
at $400.00. It is now on sale for 90% of the
original price.
What is the new cost of the item?
Answer:
$360.00
because to find a percent you multiply 400 by .9
2+2 :( i dont know this ;cc
Answer:
i think its either 22 or 4?
Step-by-step explanation:
Answer:
I believe it is 4
Step-by-step explanation:
hey siri play wap on living room speakers.
If m1=42, what must the measure of 7 be in order to prove a||b?
PS:Couldnt find the sign hopefully image helps
Rotate (4, -7) about the origin 180 degrees.
Where is the new point?
A. (7,4)
B. (7,-4)
C. (4,7)
D. (-4,7)
Alex is putting trim around the window below. 8 ft 6 ft If the trim costs $2.95 per foot, approximately how much did Alex spend on window trim? 0 A. $83 O B. $93 O C. $121 D. $142
Answer:
Step-by-step explanation:
Given: He needs 8ft and 6 ft
The trim costs 2.95 per foot
so if we do 8 times 2.95 we get 23.60
Next we do the same with 6 and we get 17.7
Add then together and we get $41.30
If this isn't right, i think you wrote either the answer choices wrong or the question itself wrong because it kinda confused me.
if L || M, find the value of each missing variable(s).
Answer:
13. x = 21; y = 15
14. x = 8; y = 11
15. x = 16; y = 23
Step-by-step explanation:
13. (3x - 16)° + (6x + 7)° = 180° (same side interior angles are supplementary)
Solve for x
3x - 16 + 6x + 7 = 180
Collect like terms
9x - 9 = 180
Add 9 to both sides
9x = 180 + 9
9x = 189
Divide both sides by 9
x = 189/9
x = 21
(6x + 7)° = (11y - 32)° (vertical angles are congruent)
Solve for y by substituting x = 21 into the equation
6(21) + 7 = 11y - 32.
126 + 7 = 11y - 32
133 = 11y - 32
Add 32 to both sides
133 + 32 = 11y
165 = 11y
Divide both sides by 11
165/11 = y
15 = y
y = 15
14. (11x - 25)° = (8x - 1)° (alternate exterior angles theorem and corresponding angles theorem)
Solve for x
11x - 25 = 8x - 1
Collect like terms
11x - 8x = 25 - 1
3x = 24
Divide both sides by 3
x = 24/3
x = 8
(8x - 1)° + (15y - 48)° = 180° (linear pair theorem)
Substitute x = 8 into the equation and solve for y
8(8) - 1 + 15y - 48 = 180
64 - 1 + 15y - 48 = 180
15 + 15y = 180
Subtract 15 from both sides
15y = 180 - 15
15y = 165
Divide both sides by 15
y = 165/15
y = 11
15. (7x - 44)° = (4x + 4)° (alternate exterior angles theorem)
Solve for x
7x - 44 = 4x + 4
Collect like terms
7x - 4x = 44 + 4
3x = 48
Divide both sides by 3
x = 48/3
x = 16
39° + (8y - 43)° = 180° (corresponding angles theorem and linear pair theorem)
Solve for y
39 + 8y - 43 = 180
Collect like terms
-4 + 8y = 180
Add 4 to both sides
8y = 180 + 4
8y = 184
Divide both sides by 8
y = 184/8
y = 23
Express the shaded area as a fraction a 5/10
Answer:
5/10
Step-by-step explanation:
do a square with 10 sides and color in 5 parts
Write the number in standard form.
Twelve million, six hundred thousand, eight
Answer:
12,600,008
Step-by-step explanation:
I hope this helps you! :)
A car initially moving at 4 m/s accelerates to a new velocity of 10 m/s in a time of 3
seconds. What was the acceleration of the car?
Step-by-step explanation:
Hey there!
Given;
Initial velocity (u) = 4m/s
Final velocity (v) = 10m/s.
Time(t) = 3s
Acceleration (a) = ?
We know;
[tex]a = \frac{v - u}{t} [/tex]
Keep all values.
[tex]a = \frac{10 - 4}{3} [/tex]
Simplify it.
[tex]a = \frac{6}{3} [/tex]
Therefore, acceleration is 2m/s^2.
Hope it helps....
Four different tables of x and y values are shown.
Table 1
у
Table 2
х у
-4 5
10
NOW
1
-4
8
5
2
5
5
26
2
8
Table 3
Table 4
у
2
х
-4
-1
y
-7
XNNIO lo
2
2
3
7
2
9
19
Which table(s) represent(s) a function?
Table 1 only
O Table 2 only
O Tables 1 and 3 only
Tables 1.3. and 4 only
Step-by-step explanation:
I believe it's table 2 only, but I apologize if I'm wrong. Haven't learned functions in about 3 years haha!
PLEASE HELPMEEEEEEEEEEEEEEEEEEEEE!!!!!
Answer:
The constant of proportionality in the equation y= 2X is 2.
Explain the difference between (-12) and -12
Answer:
0 or none
Step-by-step explanation:
jump the number line
Quadratic Funtions Mathematics
Answer:
No estoy seguro, intenta preguntarle a tu profesor
Step-by-step explanation:
No estoy seguro, intenta preguntarle a tu profesor
Answer:
Step-by-step explanation:
i want brainliest yeeeeeeeeeeeeeeeeeeeeeeeeeeet
Denver is planting strawberry seedlings in a new garden. He can plant 3 rows of a certain length with 2 seedlings left over or 4 rows of the same length with 3 seedling spots left empty. What is the length, x, of each row in meters?
Answer:
The length of each row is 5 m.
Step-by-step explanation:
It is given that,
Denver can plant 3 rows of a certain length with 2 seedlings left over and 4 rows of the same length with 3 seedling spots left empty.
Let the length of each row is x.
Case 1,
Total number of seeds = 3x+2
Case 2,
Total number of seeds = 4x-3
From both of the cases,
3x+2 = 4x-3
Taking like terms together,
3x-4x=-3-2
-x=-5
x=5
So, the length of each row is 5 m.
You recently started your own company. Your first year in business, your company reported a net loss of $1,250. The next year, your company made a $3,475 net profit. The year after that, your company reported a $2,478 net profit. What was your company's net loss or gain over the last 3 years?
Answer:
$4703
Step-by-step explanation:
Given that :
First year :
Net loss = $1250
2nd year:
Net profit = $3475
3rd year :
Net profit = 2478
Net loss or gain over the last 3 years :
Let Net loss be represented as negative and net profit as positive
Net loss + net profit + net profit
(-$1250 + $3475 + $2478)
$4703 net gain over the last 3 years
If u can guess my age I’ll mark brainliest :D
Answer:
I'm guessing that you're some age over the age of 1.
Edit: I honestly don't care about being marked Brainliest, because it's not even that important.
how many 1/8 can i find in 6/7
Answer:
Im pretty sure your answer is 3/28 if not 48/7
Step-by-step explanation:
When mutliplying exponents with the same base (ie 4 to the 3rd times 4 to the 5th) you do what to the exponents?
Answer:
que peh lass no llora la vcida una carnivasl
Step-by-step explanation:
Carpets Plus has five square carpet remnants. Two of the remnants measure 8 feet on a side, and three of the remnants
measure 10 feet on a side. Which expression represents the total square footage of the five carpet remnants?
O 12 * 102) + (382)
82 +10%
5(8 + 10)2
O (2*82) + (3 x 102
Answer:I don’t understand what you are asking so I am going to answer it my way sorry if it wrong oki think that it is 10 x 4 = 40 but I just did what I think sorry it most likely wrong but yea ..,
Step-by-step explanation:
Grace's mom gave her $15.00 to buy school supplies. Grace needs to buy 3 mechanical pencils and some notebooks. If each mechanical pencil costs $1.75 and each notebook costs $2.99, how many notebooks can Grace buy using only the money her mom gave her?
Answer:
3
Step-by-step explanation:
A bank records deposits as positive numbers and withdrawals as negative numbers. Mike withdrew $60 from his bank account 3 times. What is the change in Mike's account balance after all withdrawals? a) write the setup (the expression) b) answer as an integer c) answer in a sentence
Answer:
-$180
Step-by-step explanation:
Mike withdrew $60 from his bank account 3 times.
The bank record withdrawals as negative numbers
a) write the setup (the expression)
= -$60 * x
= -$60x
Where x = number of times Mike withdrew
b) answer as an integer
-$60 * 3
= -$180
c) answer in a sentence
$60 * 3
= -$180
= Negative $180 or minus $180
SOMEONE HELP PLEASE ?!
Answer:
3.5
Step-by-step explanation:
Change the decimal to a fraction.
Find the common denominator.
Rename the fraction.
Then, add.
0.25+ 1/8
Answer:
18.0.25 is the common decimal
but i dont noo the correcy answer