Answer:
-114
Step-by-step explanation:
f(6) it means f(x=6) so substituting x=6 in your equation gives us
f(6)= -4*(6)²+5*(6)
= -4*36+30
= -144+30
= -114
Which set of line segments can be used to construct a triangle?
A) 6cm, 3cm, and 2cm
B) 7cm, 4cm, and 1cm
C) 8cm, 3cm, and 6cm
D) 9cm, 2cm, and 6cm
What is
y
+
3
=
7
(
x
−
2
)
y+3=7(x−2)y, plus, 3, equals, 7, left parenthesis, x, minus, 2, right parenthesis written in standard form?
Choose 1 answer:
The standard form of the given expression is 7x - y = 17
Equation of a line in standard formThe equation of line in standard form is expressed as Ax + By = C
Given the equation
y + 3 = 7(x - 2)
Expand
y + 3 = 7x - 14
y -7x = -14 - 3
-7x + y = - 17
7x - y = 17
Hence the standard form of the given expression is 7x - y = 17
Learn more on standard form of equation here: https://brainly.com/question/187506
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The variables x and y very directly. Use the values to find the constant of proportionality K then write equation that relates to x and y. Write any fraction in simplest form. Y equals 20 and X equals 12
Answer:
k=5/3
Step-by-step explanation:
The variables x and y vary directly. Given that, y = 20 and x = 12
We can write it as :
y=kx
Where k is constant of proportionality
Put the values of x and y
20=12k
k = 20/12
k = 5/3
So, the value of the constant of proportionality is 5/3.
!!!!PLEASE I NEED HELP PLEASE ANSWER 1 AND 2! PLEASE ANSWER CORRECTLY ASAP!!!!
Use the substitution method to solve the system of equations. Choose the correct ordered pair. x+y=12 and -x=-y-10
A (9, 3)
B (10, 2)
C (11, 1)
D (8, 4)
Could anyone help me with 4 questions about inequalities?
I will give points and brainiest.
Answer:
Put a shaded dot in 9 and an arrow pointing left
Step-by-step explanation:
Audrey bought a refrigerator for $266 that was originally priced at $665. What percentage is the discount?
Answer:
40.6%
Step-by-step explanation:
discount percentage:
x/y*100
266/655 *100 which is 40.6%
Hope this helps plz hit the crown :D
I NEED HELP!! WILL GIVE BRAINLIEST
40 POINTS
1. For safety, a ladder should make a 75 degree angle with the ground, as shown here. Use a trigonometric ratio to determine how far up the wall a 16-foot ladder will reach. (Find x.) Round to four decimal places. (PICTURE IS INSERTED)
A. 4.1411 ft
B. 15.3802 ft
C. 15.4548 ft
D. 59.7128 ft
2. Use Pythagorean Theorem to find the length of segment AC (the distance the base of the ladder will be from the base of the house). Round to two decimal places.
A. 4.14 ft
B. 4.42 ft
C. 15. 45 ft
D. 73.27 ft
Answer:
I think it's A and C
Step-by-step explanation:
I could be wrong though
Answer:
c
Step-by-step explanation:
if not sorry
I can’t understand what the question is asking me pls help
Answer: 3/4
Step-by-step explanation:
28 members in all - 12 boys = 16 girls
12/16 = 3/4
Identify the domain of the function.
Answer:
Step-by-step explanation:
domain represents the numbers at the x endpoints of a graph.
on the graph we see that on the left, the line ends when x is -4
on the right, the line ends when x is 4
the domain is
-4, 4
but notice how on the left there is an open circle
this will be written with a parentheses
( -4, 4
and notice how on the right there is a closed circle
this will be written with a bracket
(-4, 4]
so the answer is C
Katie can buy 2 lb of apples for $7. What is the unit rate for the apples?
Answer:
$3.50 per lb of apples
Step-by-step explanation:
7/2 = 3.5
tell weather each equation has one solution , zero solution or infinte solutions really easy : )
Answer:
several different solutions,
Determine if (1, 3) is a solution to the given system of linear equations. 5x+y=8 x+2y=5 (1 point)
No, because substituting the given ordered pair yields two true expressions.
No, because substituting the given ordered pair doesn't yields two true expressions.
Yes, because substituting the given ordered pair doesn't yield two true expressions.
Yes, because substituting the given ordered pair yields two true expressions.
5x+y=8 equation 1
x+2y=5 equation 2
Subsitute (1,3) in bothe equations if the right side is equal to.the left side of the equation then (1,3) is a solution
5(1)+3=8
1+2(3)=7
7 isn't equal to 5 so 1,3 is NOT a solution for this system of equations
Answer:
No, because substituting the given ordered pair doesn't yield two true expressions
Step-by-step explanation:
:)
PLEASE HELP I WILL MARK BRAINLIEST
Answer:
a: y= -5x
b: y= 2x +3
c: y= -3
d: undefined or x=6
In order to join gymnastics after school, there is $75 on-time fee and $30 monthly fee. Which slope-intercept from equation models this situation
A. Y=30x + 20
B. Y=75x + 30
C. Y=30x + 75
D. Y= 30x
Mr. Wilson wants a new version of Animal Crossing for Christmas. Mrs. Tilson-Wilson finds it for $64.50. If she waits until Cyber Monday, the game will be on sale for 20% off. How much will she pay for the game if she waits?
HURRRY PLSSSSSSSS
Need help ASAP!! Will mark brainliest
Answer:
The answer is D-16
Step-by-step explanation:
Since we have x on one side, and 49 degrees on the other, both angles are the same, so we subtract 1 from 49 to get 48, so that 3x has to equal 48. So we just divide 48 by 3 to get 16, so x = 16.
Find the radius of a circle that has a circumference of 16
Answer:
r≈2.55
hope this helps!
PLEASE HELP Consider the rectangle reduction.
A larger rectangle has a length of StartFraction 17 over 8 EndFraction inches and width of StartFraction 11 over 6 EndFraction inches. A smaller rectangle has a length of StartFraction 17 over 10 EndFraction inches and width of x inches.
What is the missing dimension of the reduced rectangle?
Answer:
Sorry if this is late but it's 11/15
Step-by-step explanation:
I did it on edg 2020 so ye
Answer:
the first one 11/15
Step-by-step explanation:
6n + 9 = -3n-21-6 for n
Please help I am very confused
Answer:
n=-4
Step-by-step explanation:
[tex]6n+9=-3n-21-6\\6n+9=-3n-27\\9n=-36\\n=-4\\[/tex]
Hope this helps plz hit the crown :D
A boat leaves a pier and travels 15 miles due east, then turns and travels 15 miles in the direction N 20 E. Which diagram represents the boats current distance x from the pier?
Answer:
I chose B
Step-by-step explanation:
Because it goes north and east, and i got an 84
Answer:
The answer is A
Step-by-step explanation:
because the green arrow represents the 15 miles East, then the blue arrow is 20degrees east of a line straight up and down, so its N 20 E
Step-by-step explanation:
find da slope!!!!! help!!!!!!!!!!
Answer:
This is graph right
Step-by-step explanation:
is this maths or economics
What is the equation of the line that has a slope of 1/2 and contains the points 0,3?show work please
Answer:
Step-by-step explanation:
y - 3 = 1/2(x - 0)
y - 3 = 1/2x - 0
y = 1/2x + 3
please help asap pre alg
Answer:
the answer is c there bud
Answer:
d
Step-by-step explanation:
a^2 + b^2 = c^2
5^2 + 3^2 = c^2
25 + 9 = c^2
34 = c^2
√34 = √c^2
√34 = c
√34 = x
Consider the function f(x) = (x+ 1)2 - 1. Which of the following functions stretches
fo) vertically by a factor of 4?
O A) f0 - (/ax+ 1)2 +3
O B) f9 = 1/ax+ 1)2 -4
Oo fo-4(x+ 1)2 - 1
OD) fo = 4(4x+ 1)2- 1
Answer:
C
Step-by-step explanation:
A coefficient of 4 would have to be added in front of (x+1)^2 in order to vertically stretch the function by a factor of 4.
The answer that demonstrates this is choice C: [tex]f(x) = 4(x+1)^2-1[/tex]
The functions stretches vertically by a factor of 4 will be f(x) = 4(x+ 1)² - 1. Then the correct option is C.
What is the equation of the parabola?Let the point (h, k) is the vertex of the parabola and a is the leading coefficient.
Then the equation of the parabola will be given as,
y = a(x - h)² + k
The quadratic function is given below.
f(x) = a(x+ 1)² - 1
If the value of the leading coefficient lies between 0 to 1. Then the parabola is stretched horizontally.
And if the value of the leading coefficient is greater than one. Then the parabola is stretched vertically.
The functions stretches vertically by a factor of 4. Then the value of the leading coefficient is 4. Then the equation will be
f(x) = 4(x+ 1)² - 1
Then the correct option is C.
More about the equation of parabola link is given below.
https://brainly.com/question/20333425
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PLEASE HELP IM BEING TIMED
When 0.5(20x – 50y + 36) – 0.25(–100x + 40y – 12) is simplified, what is the resulting expression?
Answer:
35x-35y+21
Step-by-step explanation:
.5(20x-50y+36)-.25(-100x+40y-12)
10x-25y+18+25x-10y+3
35x-25y+18-10y+3
35x-35y+18+3
35x-35y+21
35x-35y+21
Step-by-step explanation:
Which ordered pair represents a reflection of the point (-3,5) across the y-axis?
Answer:
-5,6
Step-by-step explanation:
YO MOM ZZZZZZZZZZZZZZZZP
Someone plssss help me I’m in the middle of a test and imma fail this class if I don’t get an a or b
Answer:
It's A. 4 units
Step-by-step explanation:
Literally, you just have to count the number of units (those gaps) between W and Z
A javelin thrower knows that the angle from the ground their javelin sits when landing is 140° What is the second angle formed with the javelin and the ground? Assume the ground is a straight line. Show all work in solving for the angle measure.
Answer:
40°
Step-by-step explanation:
the ground is a straight line, which is 180°
its just 180°-140°=40°
Which of the following statements is true? *
On a number line, -|55| an |-55| are the same point.
On a number line, -|55| is farther from 0 than |-55| is.
On a number line, -|55| an |-55| are the same distance from 0.