Answer:
a(7) = -32.
Step-by-step explanation:
if a(x) = -5x+8
then a(7) = -5(7) + 8.
-5(7) +8
-40+8
-32.
I hope this helps!
Amanda has four boards that are each 64 inches long. She needs to cut each board into multiple pieces that are each 12 4/5
inches long. How many pieces will she have after she cuts all four boards?
What’s the equation in point slope form of the line that passes through the point (-1,1) and has a slope of 4 ?
9514 1404 393
Answer:
y -1 = 4(x +1)
Step-by-step explanation:
The point-slope form of the equation of a line with slope m through point (h, k) is ...
y -k = m(x -h)
For m=4 and (h, k) =(-1, 1), the equation is ...
y -1 = 4(x +1)
NEED HELP ASAP WILL GIVE BRAINLIEST 100pts
Use the right trig notes to complete the following questions. upload your completed task at the bottom of the assignment for extra credit.
Answer:
What type of math is this?
Step-by-step explanation:
question can u put a picture that looks more clear is blury
Kim has a bag with 4 blue marble, 4 black marble, 7 orange marbles, 2 red marbles, 6 yellow marbles, and 1 pink marble. If she chooses a marble twice at random and replaces the marble. P(blue and then black)?
A. 7 20/21
B. 3.75
C. 1/36
D. 2.57
E. 66
Answer:
Step-by-step explanation:
E
In ΔKLM, k = 890 inches, ∠M=143° and ∠K=34°. Find the length of m, to the nearest 10th of an inch.
Answer: 957.8
Step-by-step explanation:
The ratio of boys to girls in 9th grade is 4 boys to 5 girls. There are 350 girls.
How many boys are there?
250
300
200
280
Step-by-step explanation:
The ratio of boys :girls=4:5 so you have 4 boys and 5 girls
Now , you can ,
4/5×350
= 280
280 is the correct answer hope it helps u
Really expense 22.00 sales tax on 2 jerseys and three pairs of socks and jerseys or cost 6.75 each and the total sales tax was $1.03 in three cents fill in the table with the correct prices
Answer:
Step-by-step explanation:
eally expense 22.00 sales tax on 2 jerseys and three pairs of socks and jerseys or cost 6.75 each and the total sales tax was $1.03 in three cents fill in the table with the correct prices
The area of a circle is increasing at a constant rate of 79 square centimeters per second. At the instant when the radius of the circle is 77 centimeters, what is the rate of change of the radius
Answer:
0.51cm/s
Step-by-step explanation:
Area of a circle A = πr²
r is the radius
Rate of change of area is expressed as;
dA/dt = dA/dr • dr/dt
dA/dr = 2πr
radius r = 77cm
dA/dt = 79cm²
Get dr/dt
Substitute the given values into the formula
79 = 2π(77)•dr/dt
79 = 154dr/dt
dr/dt = 79/154
dr/dt = 0.51cm/s
Hence the rate of change of the radius is 0.51cm/s
Please help! I will give branliest to whoever answers first!
Find the equation of the exponential function represented by the table below:
Answer:
It is halfing each, here is my proof.
Step-by-step explanation:
Half of 0.02 is 0.01 half of that is 0.005 and half of that is 0.0025. This is the cycle, hope it helps! :D
Answer:
y=0.02(5)^x
Step-by-step explanation:
3. Katie Ledecky swims the length of a 50m Olympic size pool in 25 seconds and swims the return trip to the starting position in 26 seconds. What are her average velocities during:
This question is incomplete, the complete question is;
Katie Ledecky swims the length of a 50m Olympic size pool in 25 seconds and swims the return trip to the starting position in 26 seconds. What are her average velocities during:
a) The first half of the swim?
b) The second half of the swim?
Answer:
a) her average velocities during the first half = 2 m/s
b) her average velocities during the second half = 1.923 m/s
Step-by-step explanation:
Given that;
displacement = 50 m
time taken t = 25 secs
a)
average velocity = displacement / time taken = 50 / 25 = 2 m/s
Therefore her average velocities during the first half = 2 m/s
b)
In the second half;
displacement = 50 m
time taken t = 26 secs
average velocity = displacement / time taken = 50 / 26 = 1.923 m/s
Therefore her average velocities during the second half = 1.923 m/s
Which expression is equivalent to 5(x + 7)?
1)The average teacher's salary in a certain state is $37,764. Assume a normal distribution with a standard deviation of $5100. Assume that the sample is taken from a large population and the correction factor can be ignored. Use a TI-83 Plus/TI-84 Plus calculator and round the answers at least four decimal places.
(a) What is the probability that a randomly selected teacher's salary is greater than $42,000?
p (X > 42,000)=?
(b) For a sample of 75 teachers, what is the probability that the sample mean is greater than $39,500?
P (ꭓ > 39,500)=?
Answer:
A. 0.2033
B. 0.0016
Step-by-step explanation:
Help? Please even 100 Point split
Answer: [tex]m - 5.25 = 4.75[/tex]
Step-by-step explanation:
We know Austin and his family go to the Carver Country Fair each year.
We also know Austin spends $5.25 trying to win a giant snake plushie.
He won the plushie, so we deduct $5.25. Our current equation is [tex]m - 5.25[/tex].
After spending $5.25 on a plushie, Austin still has 4.75.
We will now have our equation as [tex]m - 5.25 = 4.75[/tex]
The answer is Option B.
Answer:
[tex]\Large \boxed{\sf m-5.25=4.75}[/tex]
Step-by-step explanation:
Money received from Austin's dad - Money spent in Ring Toss = Money left after win at Ring Toss
Let 'Money received from Austin's dad' be m
please help me with this will give thanks and brainliest.
Answer:
1.394x10^-9
move the decimal point 9 to the left.
0.000000001394
Click on the point that best represents the location of −√5 on the number line.
Answer:
The dot all the way on the left. The one between 2 and 3 I believe.
Step-by-step explanation:
Answer:
The dot all the way to the left on the negative side.
Step-by-step explanation:
Use the equation below to find y if m =4 x=5 and b=12 I need help
Answer:
im sorry but what is the equation. It will have an equation listed below for you to plug in the numbers
Step-by-step explanation:
maria and her friends went for a bike ride the start and the end times are shown below
Answer:
c
Step-by-step explanation:
Answer:
the answers is 1 hour 23 minutes
Step-by-step explanation:
Line segment EF had endpoints E(5,-1) and F(-3,8). What are the coordinates of the midpoint of EF?
Answer:
(1, 7/2)
Step-by-step explanation:
the formula for midpoint is [tex](\frac{X1 + X2}{2}[/tex], [tex]\frac{Y1 + Y2}{2})[/tex]
A teacher uses $40.00 to pay for s students to ride the bus and receives $1.60 in change. If it cost $1.20 for each student to ride the bus, which statement is true?
Answer:
She helped 32 students
Step-by-step explanation:
1.20s+1.60=40
If -xy – 5+ y^2+ x^2= 0 and it is known that dy/dx= y-2x/-x+2y, find all
coordinate points on the curve where x = -1 and the line tangent to the
curve is horizontal, or state that no such points exist.
Answer:
There is no point of the form (-1, y) on the curve where the tangent is horizontal
Step-by-step explanation:
Notice that when x = - 1. then dy/dx becomes:
dy/dx= (y+2) / (2y+1)
therefore, to request that the tangent is horizontal we ask for the y values that make dy/dx equal to ZERO:
0 = ( y + 2) / (2 y + 1)
And we obtain y = -2 as the answer.
But if we try the point (-1, -2) in the original equation, we find that it DOESN'T belong to the curve because it doesn't satisfy the equation as shown below:
(-1)^2 + (-2)^2 - (-1)*(-2) - 5 = 1 + 4 + 2 - 5 = 2 (instead of zero)
Then, we conclude that there is no horizontal tangent to the curve for x = -1.
Assuming that the heights of college women are normally distributed with mean 65 inches and standard deviation 3.5 inches, what percentage of women are shorter than 68.5 inches
Answer: the percentage of women that are shorter than 68.5 inches is 84.1%
Step-by-step explanation:
Given that;
mean μ = 65
standard deviation σ = 3.5
percentage of women are shorter than 68.5 inches = ?
P( x < 68.5 ) = P(( x-μ)/σ)
we substitute
⇒ ( 68.5-65)/3.5)
⇒ P(z < 1)
form standard normal table
P( x < 68.5 ) = P(z < 1) = 0.84134 ≈ 84.1%
Therefore, the percentage of women that are shorter than 68.5 inches is 84.1%
Pls help urgently extra points and mark brainlist
If a+b=20 and ab=50
Then find the value of a^2+b^2
Here,
a+b=20
ab=50
we know that,
[tex]\tt{ (a+b)^2=a^2+b^2+2ab }[/tex] ⠀
According to the question,
[tex]\tt{(20)^2=a^2+b^2+2×50 }[/tex] ⠀
[tex]\tt{ 400=a^2+b^2+100 }[/tex] ⠀
[tex]\tt{ a^2+b^2=400-100 }[/tex] ⠀
[tex]\tt{a^2+b^2=300 }[/tex] ⠀
Answer:
a² + b² = 300
Step-by-step explanation:
a + b = 20 ; ab = 50
(a +b)² = a²+ b² + 2ab
a² + b² + 2ab = (a + b)²
a² + b² + 2*50 = (20)²
a² + b² + 100 = 400
a² + b² = 400 - 100
a² + b² = 300
Substituting the equation x = 2y + 3 into the equation y=-3x - 4 will produce what equation?substituting the equation x equals 2y + 3 into the equation y equals negative 3x - 4 will produce what equation
Substituting the equation x = 2y + 3 into the equation y=-3x - 4 will produce the equation y = -3(2y + 3) - 4
What are linear equations?Linear equations are equations that have constant average rates of change, slope or gradient
How to determine the solution to the system?A system of linear equations is a collection of at least two linear equations.
In this case, the system of equations is given as
x = 2y + 3
y = -3x - 4
Considering the first equation
x = 2y + 3
Considering the second equation
y = -3x - 4
Substitute the first equation in the second equation
y = -3(2y + 3) - 4
Hence, substituting the equation x = 2y + 3 into the equation y=-3x - 4 will produce the equation y = -3(2y + 3) - 4
Read more about system of linear equations at
https://brainly.com/question/14323743
#SPJ1
Complete the table below for the function y= 3x
Answer:
the first one equals 3 the second one is 6 and the third one is 9
Step-by-step explanation:
Answer:
:D
Step-by-step explanation:
thx i needed this answer
to decrease an amount by 28% , multiply by ????
3x 1/3 brainliest if answer
Answer:
what is the question
Step-by-step explanation:
simplified Answer: 10/3
Non simplified :3 1/3
Step-by-step explanation:
WILL GIVE BRIANLEST IM WATCHING
Answer:
negative
Step-by-step explanation:
♪＼(*＾▽＾*)／＼(*＾▽＾*)／
Given the equation of a regression line is y = 4x-6, what is the best predicted value for y given x=9?
Answer:
y=30
Step-by-step explanation:
Answer:
y=30
Step-by-step explanation:
y=4x-6
y=4(9)-6
y=36-6
y=30
Test - Par Parallel Lines & Transversals
Answer:
N central and Malzahn St are parrallel while the transversal is Brockway Rd
Step-by-step explanation:
Im not a nerd.