Answer:
y=1/2x+2
Step-by-step explanation:
4m 2+ m - 17 = 0 how to solve step by step
Answer:
The solutions for this quadratic equation are [tex]m_1 = 1.94, m_2 = -2.19[/tex]. Bhaskara was used to solve.
Step-by-step explanation:
Solving a quadratic equation:
Given a second order polynomial expressed by the following equation:
[tex]ax^{2} + bx + c, a\neq0[/tex].
This polynomial has roots [tex]x_{1}, x_{2}[/tex] such that [tex]ax^{2} + bx + c = a(x - x_{1})*(x - x_{2})[/tex], given by the following formulas:
[tex]x_{1} = \frac{-b + \sqrt{\Delta}}{2*a}[/tex]
[tex]x_{2} = \frac{-b - \sqrt{\Delta}}{2*a}[/tex]
[tex]\Delta = b^{2} - 4ac[/tex]
In this question:
We have the quadratic equation:
[tex]4m^2 + m - 17 = 0[/tex], which has [tex]a = 4, b = 1, c = -17[/tex].
Then
[tex]\Delta = (1)^{2} - 4(4)(-17) = 273[/tex]
[tex]m_{1} = \frac{-1 + \sqrt{273}}{8} = 1.94[/tex]
[tex]m_{2} = \frac{-1 - \sqrt{273}}{8} = -2.19[/tex]
The solutions for this quadratic equation are [tex]m_1 = 1.94, m_2 = -2.19[/tex]. Bhaskara was used to solve.
Consider a system with one component that is subject to failure, and suppose that we have 115 copies of the component. Suppose further that the lifespan of each copy is an independent exponential random variable with mean 20 days, and that we replace the component with a new copy immediately when it fails.
(a) Approximate the probability that the system is still working after 3500 days.
(b) Now, suppose that the time to replace the component is a random variable that is uniformly distributed over (0, 0.5). Approximate the probability that the system is still working after 4125 days.
Answer:
Step-by-step explanation:
From the given information:
the mean [tex](\mu) = 115 \times 20[/tex]
= 2300
Standard deviation = [tex]20 \times \sqrt{115}[/tex]
Standard deviation (SD) = 214.4761
TO find:
a) [tex]P(x > 3500)= P(Z > \dfrac{3500-\mu}{214.4761})[/tex]
[tex]P(x > 3500)= P(Z > \dfrac{3500-2300}{214.4761})[/tex]
[tex]P(x > 3500)= P(Z > \dfrac{1200}{214.4761})[/tex]
[tex]P(x > 3500)= P(Z >5.595)[/tex]
From the Z-table, since 5.595 is > 3.999
[tex]P(x > 3500)=1-0.9999[/tex]
P(x > 3500) = 0.0001
b)
Here, the replacement time for the mean [tex](\mu) = \dfrac{0+0.5}{2}[/tex]
= 0.25
Replacement time for the Standard deviation [tex]\sigma = \dfrac{0.5-0}{\sqrt{12}}[/tex]
[tex]\sigma = 0.1443[/tex]
For 115 component, the mean time = (115 × 20)+(114×0.25)
= 2300 + 28.5
= 2328.5
Standard deviation = [tex]\sqrt{(115\times 20^2) +(114\times (0.1443)^2)}[/tex]
= [tex]\sqrt{(115\times 400) +(114\times 0.02082249}[/tex]
= [tex]\sqrt{(46000) +2.37376386}[/tex]
= [tex]\sqrt{(46000) +(2.37376386)}[/tex]
= [tex]\sqrt{46002.374}[/tex]
= 214.482
Now; the required probability:
[tex]P(x > 4125) = P(Z > \dfrac{4125- 2328.5}{214.482})[/tex]
[tex]P(x > 4125) = P(Z > \dfrac{1796.5}{214.482})[/tex]
[tex]P(x > 4125) = P(Z >8.376)[/tex]
[tex]P(x > 4125) =1- P(Z <8.376)[/tex]
From the Z-table, since 8.376 is > 3.999
P(x > 4125) = 1 - 0.9999
P(x > 4125) = 0.0001
Are all cones similar?
Answer: all cones with the same height are always similar. False... radii could differ. ... Doubling the radius of a sphere doubles its surface area.
Step-by-step explanation:
· At Jefferson High School, 30% of students drive to school, 60% of students ride the bus to
school, and 10% of students walk to school. There are 375 students who drive to school.
How many more students drite to school than walk to school?
Answer:
Difference = 250 students
Step-by-step explanation:
Let the total number of students be x.
Given the following data;
% driving = 30%
% riding = 60%
% walking = 10%
Number of students driving = 375
First of all, we would determine the total number of students.
Total = 30/100 * x = 375
0.3x = 375
Total, x = 375/0.3
Total, x = 1250 students.
Next, we determine the number of students walking;
Walking = 10/100 * 1250
Walking = 12500/100
Walking = 125 students
Finally, we would determine many more students drive to school than walk to school;
Difference = 375 - 125
Difference = 250 students
Alonzo, Enio, and George bought a watercolor paint box for $15.35 and 3 brushes for $2.25 each. They had a coupon for $2.00 off their purchase. They split the remaining cost equally. Which expression could be used to find the amount each person paid?
Answer:C. [12.35+(2.25x3)-2]÷3
Find the measure of the arc indicated.
pls help 10 pts
no links
Answer:
a
Step-by-step explanation:
the answer is A I hope that helps you for school
Solve
W times 4 - 10=42
Please help quick thank you
Answer:
13
Step-by-step explanation:
4w-10=42
4w=52
w=52/4
w=13
PLEASE HELP! (100 points)
Jose simplified an expression as shown below:
Given: x+3+7(x-5)
Step 1: x+3+7x-5
Step 2: 8x+3-5
Step 3: 8x-2
In which step did Jose make a mistake? What should he have done instead?
Answer:
8x-32
Step-by-step explanation:
Distribute 7 through the parenthesis
x+3+7(x-5)
=x+3+7x-35
Collect the like terms
x+3+7x-35
=8x+3-35
Calculator the difference
8x+3-35
=8x-32
He didn't followed the parentheses method from the beginning itself.
Hope it helps.
х
The table of values below represent an exponential function. Write an exponential equation that models the data.
у
-2 23
-1 16.1
0 11.27
1 7.889
2 5.5223
a.
y = 23(0.7)
y = 16.1(1.7)
C. y = 11.27(0.7)
d.
y = 11.27(1.3)
b.
9514 1404 393
Answer:
C. y = 11.27(0.7^x)
Step-by-step explanation:
The table value (x, y) = (0, 11.27) tells you the multiplier of the exponential term will be 11.27. The decreasing values tell you the base of the exponential term is less than 1. Only answer choice C matches these requirements.
Identify the local minimum for the function shown.
pls pls help i realy need help
Answer:
a <= 3
Step-by-step explanation:
PLZ HURRY I GOT A TIME LIMIT
Answer:
pretty sure it's B
Step-by-step explanation:
origin - (0,0)
right 4x - (4,0)
up5x-(4,5)
A quadratic function f whose zeros are -3,-8
Answer:
[tex]x^2+11x+24=0[/tex]
Step-by-step explanation:
Given that,
The zeros of a quadratic function are -3 and -8
It means,
(x+3) = 0 and (x+8)=0
Now multiply them together,
[tex](x+3)(x+8)=0\\\\x^2+8x+3x+24=0\\\\x^2+11x+24=0[/tex]
Hence, the required equation is equal to [tex]x^2+11x+24=0[/tex].
please solve for 50 points!!!
Step-by-step explanation:
I am assuming you want x? if so :
5x+12=6x-10
-x = -22
x =22
if u wanted angle J :
plug x back in
5(22)+12 = 122
subtract 180-122
J = 58°
Answer: person above me is correct
Step-by-step explanation:
PLEASE ANSWER ASAP WILL MARK BRAINLIEST!!
Select the favorable outcomes for rolling a sum of seven.
O (5-1) (5-2) (5-3) (5-4) (5-5) (5-6)
O (1-6) (2-5) (3-4) (4-3) (5-2) (6-1)
O (1-1) (1-2) (1-3) (2-1) (2-2)(3-1)
O (1-1) (2-2) (3-3) (4-4) (5-5) (6-6)
Answer:
The second one
O (1-6) (2-5) (3-4) (4-3) (5-2) (6-1)
Step-by-step explanation:
Favorable outcome is the outcome that we are looking for
The outcome that we are looking for when rolling two = die is a sum of 7
The set (1-6) (2-5) (3-4) (4-3) (5-2) (6-1) all add up to equal 7
( 1 , 6 ) 1 + 6 = 7
( 2 , 5 ) 2 + 5 = 7
( 3 , 4 ) 3 + 4 = 7
etc.
Which means that they are the favorable outcomes for rolling a seven
The vertices of a triangle are A(2, a), B(-3, 1) and C(-8, -2) right-angled at A. Find the possible values of a.
Answer:
[tex]BC = \sqrt{(-3+8)^2 +(1+2)^2} = \sqrt{34}\\\\AB =\sqrt{(-3-2)^2+(1-a)^2} = \sqrt{25+(1-a)^2} \\\\AC = \sqrt{(2+8)^2+(a+2)^2} = \sqrt{100+(a+2)^2} \\\\AB^2 + AC^2 = BC^2\\\\ (\sqrt{25+(1-a)^2})^2+ (\sqrt{100+(a+2)^2})^2= (\sqrt{34})^2 \\\\25+(1-a)^2+100+(a+2)^2=34\\\\125+1+a^2-2a+a^2+4+2a=34\\\\130+2a^2 =34\\\\2a^2+96=0\\\\a^2+48=0\\\\a = \sqrt{-48}[/tex]
What is the radius of a hemisphere with a volume of 83838 in, to the nearest tenth
of an inch?
Answer:34.2
Step-by-step explanation: I just did it in delta math
A clock lost 2 minutes and 36 seconds in 78 days. How many seconds did it lose per day?
the clock lost 2 seconds per day
John's parents deposited $1000 into a savings account as a college fund when
he was born. How much will John have in this account after 18 years at a yearly
simple interest rate of 3.25%?
Answer: 15850
Step-by-step explanation:
if johns account has 10000 dollars then each year he'll be making at 3.25% interest that's a total of $325 each year therefore in 18 years he'll have made 325 X the 18 years which you turn hall to 5850 as interest but now the question is it asking how much will John have in his account after 18 years at the yearly simple interest of the 3.25 there for the total will be 15850 dollars
Raw scores on a certain standardized test one year were normally distributed, with a mean of 156 and a standard deviation of 23. If
48,592 students took the test, about how many of the students scored less than 96?
Answer:
About 220 of the students scored less than 96
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
Mean of 156 and a standard deviation of 23.
This means that [tex]\mu = 156, \sigma = 23[/tex]
Proportion that scored less than 96:
p-value of Z when X = 96. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{96 - 156}{23}[/tex]
[tex]Z = -2.61[/tex]
[tex]Z = -2.61[/tex] has a p-value of 0.00453.
About how many of the students scored less than 96?
0.00453 out of 48592.
0.00453*48592 = 220.1.
Rounding to the closest integer:
About 220 of the students scored less than 96
Answer:
220
Step-by-step explanation:
#platolivesmatter
X/4 < 1.5 show steps please
Step-by-step explanation:
x/4<1.5x<1.5×4x<6stay safe healthy and happy...Find the lenght of c using the Pythagorean theorem
Answer:
the Pythagorean theorem states:
a^2 + b^2 = c^2
in your case a=14 and b=48
Step-by-step explanation:
14^2 + 48^2 = c^2
14x14 + 48x48 = c^2
(196 + 2304 = 2500)
2500 = c^2
√2500 = c
50 = c
Final answer: 50
Subject: Pre-algebra
Questions:
1.If two angles are congruent, then their measures are equal.
True or False
2.If two angles are supplementary, then the sum of their measures are 90 degrees.
True or False
I NEED HELP ASAP ! ! !
Answer:
1: true
2: false
Step-by-step explanation:
1: congruent = equal while supplementary = 180-degrees
2: congruent angles= vertical angles, corresponding angles, alternate interior angles, & alternate exterior angles
A force of 350 pounds is resolved into component forces. If it makes an angle of 67° with the horizontal, find the larger component. 322 lb 235 lb 137 lb 380 lb
Answer: [tex]322\ lb[/tex]
Step-by-step explanation:
Given
The magnitude of the force [tex]F=350\ \text{Pounds}[/tex]
The force makes an angle of [tex]67^{\circ}[/tex] with the horizontal
So, the components of the force are
[tex]\Rightarrow F\cos 67^{\circ}, F\sin 67^{\circ}\\\Rightarrow F\cos 67^{\circ}=350\cos 67^{\circ}\\\quad \quad =136.75\ lb\\\text{Similarly, }\\\Rightarrow F\sin 67^{\circ}=350\sin 67^{\circ}\\=322.17\ lb[/tex]
The larger among the two is [tex]F\sin 67^{\circ}[/tex] i.e. [tex]322\ lb[/tex]
If students can major either in Humanities or Sciences, which fact establishes that the observation "a student is male" is independent from the observation "a student is a Science major"?
A. As many males major in Humanities as in Sciences.
B. As many males as females major in Sciences.
C. Males constitute the same fraction of students majoring in Humanities as in Sciences.
D. The fraction of males among the students majoring in Humanities is equal to the fraction of females among the students majoring in Sciences.
If 10x =5 what is x
X=1/2
X=log10 5
X=5/log10 10
X=in 5
If the measure of <4 = 105 degrees, what is the measure of <5?
IF U GET IT RIGHT ILL MARK BRAINLIEST
Please this a really easy question. Does this mean I got an A on this test?! Please answer!!!!!!!!!!!!!!!
Answer:
yes it does. good job on your A.
Step-by-step explanation:
Answer:
Yes
Step-by-step explanation:
no fke answers only real ones