PLS HELP WILL GIVE YOU BRAINLIEST!!!!!!!!!!!!
A contractor determined the average amount of time needed to build a house. * When 5 workers are used, it takes 52 days to build the house. * When 20 workers are used, it takes 13 days to build the house. if W represents the number of workers and D represents the number of days required to build the house, which statement is true about this relationship?
A) The time required to build a house varies directly with the number of workers because d=260w.
B) The time required to build a house varies directly with the number of workers because wd= 260.
C) The time required to build a house varies inversely with the number of workers because d=260w.
D) The time required to build a house varies inversely with the number of workers because wd= 260.
the number of workers because d=260w.
D) The time required to build a house varies inversely with the number of workers because wd= 260.
Answer:
BAKAAHAKAKAKAKAKAKAKAKAKAKKAKA
Step-by-step explanation:
NSJLLLLLLLLLLLLLLLLLL
cKASN.ANV.ANV,.ADNV,.ANDA,.NV.ANANV
WILL GIVE BRAINLIEST: What is the local minimum value of the function g(x)=x^4-5x^2+4? (Round answer to the nearest hundredth)
Answer:
Step-by-step explanation:
you can find where the first derivative is 0 to find the critical points
g'(x) = ( x^4 -5x^2 +4)' = 4x³-10x
g'(x) =0, make y =0 to find find where g'(x) is 0
4x³-10x =0 , factor 2x
2x(2x²-5)= 0 , each factor must be 0
2x= 0, so x= 0
2x²-5 =0, so x = ±√5/2
we now have 3 critical points -√5/2, 0, and √5/2
make intervals (-∞, -√5/2), (-√5/2, 0) , (0, √5/2) and (√5/2, +∞)
pick a point to test on each interval: -2, -1, 1 and 2 for example, and
calculate g'(x) = 4x³-10x at those points
for x= -2 we have 4(-2)³-10(-2) = -12 , negative number, decrease
for x= -1 we have 4(-1)³-10(-1) =6, positive number, increase
for x= 1 we have 4(1)³-10(1) = -6, negative number, decrease
for x= 2 we have 4(2)³-10(2) = 12, positive number, increase
we went from a decrease to an increase on intervals (-∞, -√5/2), (-√5/2, 0) so x= - √5/2 ≈ -1.58 is a minimum
we went from a decrease to an increase on intervals (0, √5/2), (√5/2, +∞) so
x= √5/2 ≈ 1.58 is a minimum as well
The sum of the measures of the interior angles of a
convex quadrilateral is
a. 180°
b. 270°
c. 540°
d. 360°
Answer:
d. 360°
Hope this help!
The value
Pi /2
is a solution for the equation 2 sin^2 x- sin x-1=0.
O A. True
B. False
Answer:
A
Step-by-step explanation:
Check the solution by substituting x = [tex]\frac{\pi }{2}[/tex] into the left side of the equation
2sin²x - sinx - 1
= 2sin²([tex]\frac{\pi }{2}[/tex] ) - sin ([tex]\frac{\pi }{2}[/tex] ) - 1
= 2(1)² - 1 - 1
= 2 - 1 - 1
= 0
= right side
[tex]\frac{\pi }{2}[/tex] is therefore a solution to the equation
5x - y = -1 - -5x + 3y = 25
Answer:
x = 101/20, y = 1/4
Step-by-step explanation:
Solve the following system:
{-y + 5 x = 25 | (equation 1)
3 y + 5 x - 1 = 25 | (equation 2)
Express the system in standard form:
{5 x - y = 25 | (equation 1)
5 x + 3 y = 26 | (equation 2)
Subtract equation 1 from equation 2:
{5 x - y = 25 | (equation 1)
0 x+4 y = 1 | (equation 2)
Divide equation 2 by 4:
{5 x - y = 25 | (equation 1)
0 x+y = 1/4 | (equation 2)
Add equation 2 to equation 1:
{5 x+0 y = 101/4 | (equation 1)
0 x+y = 1/4 | (equation 2)
Divide equation 1 by 5:
{x+0 y = 101/20 | (equation 1)
0 x+y = 1/4 | (equation 2)
Collect results:
Answer: {x = 101/20, y = 1/4
There's a piece of a pyramid is a rectangle with a width of 4.6 cm and the length of the 9 cm. What is the height in centimeters of the pyramid if it's volume is 82.8 cm^3
Answer:
6cm
Step-by-step explanation:
Given data
Width= 4.6cm
Length= 9cm
Volume= 82.8cm^3
The expression for the volume is given as
V= lwh/3
82.8= 9*4.6*h/3
cross multiply
82.8*3= 9*4.6*h
248.4= 41.4h
h= 248.4/41.4
h= 6cm
I’m so lost guys lol send help
Answer:
(x−10)(x^2+10x+100)
Explanation:
I talked to my partner, you can call them "G00gle"
[tex] \large{ \tt{❃ \: EXPLANATION}} : [/tex]
Firstly , You'll have to know the formula of a³ - b³ i.e a³ - b³ = ( a - b ) ( a² + ab + b² )What's the cube root of 1000 ? - It's 10 ! How ? [tex] \sqrt[3]{1000} = \sqrt[3]{ \underline{10} \times \underline{ 1 0} \times \underline{ 10} } = \boxed{10}[/tex][tex] \large{ \tt{❁ \: LET'S\: START}} : [/tex]
[tex] \large{ \bf{ ❀ \: \ {x}^{3 } - 1000}}[/tex]
- Write the number into the exponential form with the exponent 3 :
[tex] \large{ \bf{↦ {x}^{3} - {10}^{3} }}[/tex]
- Here , Suppose ' x ' as ' a ' & ' 10 ' as ' b '. Use the formula of a³ - b³ :
[tex]↦{ \large{ \bf{(x - 10)( {x}^{2} + x \times 10 + {10}^{2} }}})[/tex]
[tex]↦ \boxed{\large{ \bf{(x - 10)( {x}^{2} + 10x + 100) }}}[/tex]
Hence , Second option is the correct choice ! ☪ Educate Yourself. Make Yourself Smart. Grades And Knowledge Do Matter. Work On Your Subjects. Fill your brain. Move Ahead And Keep On Moving Ahead! ♪ツ Hope I helped! ۵
☼ Have a wonderful day / evening ! ☃
# StayInAndExplore ! ☂
▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
SOMEONE HELP ME PLEASE!
Step-by-step explanation:
please see the attachment
How many times would the cricket mostly likely chirp per minute if the temperature outside were 76^{\circ} ∘ F?
Answer:
834 chirps
Step-by-step explanation:
Given the data:
Chirps in 1 min Temperature (°F)
781 74
1039 85.9
1156 87.2
1218 87.8
1131 91.4
888 75.5
Using technology, the regression model obtained will be in the form :
y = bx + c
b = slope ; c = intercept
y = temperature ; x = chirps per minute
The regression model is :
ŷ= 43.28 + 0.0390x
If outside temperature, y = 76 ; x will be ;
76 = 43.28 + 0.0390x
76 - 43.28 = 0.0390x
32.72 = 0.0390x
x = 32.72 / 0.0390
x = 838.97435
x = 834 chirps per minute
Sides of the rectangle are in the ratio 14:3. If the perimeter of the rectangle is 170cm. Find the length and breadth of the rectangle.
Answer:
length:70cm
breadth:15cm
Step-by-step explanation:
170cm÷2=85cm
85cm=14:3
14+3=17
85cm÷17=5cm
5cm×14=70cm
5cm×3=15cm
a man in a boat rowing from light house whose height is 200 meter.he takes 2minutes to change the angle of elevation top of light house from 60⁰ and 45⁰ find speed of boat
Answer:
The speed of the boat is approximately 0.704 m/s
Step-by-step explanation:
The time it takes the man in the boat to change the angle of elevation from 60° to 45°, t = 2 minutes = 120 seconds
The height of the light house = 200 m
Given that the angle of elevation is reducing, the direction of the man is away from the lighthouse
The initial distance of the man in the boat from the lighthouse = 200 m/(tan(60°)) = (200/√3) m
The final distance of the man in the boat from the lighthouse = 200 m/(tan(45°)) = 200 m
The distance traveled in 2 minutes, d = 200 m - (200/√3) m ≈ 84.53 m
The speed of the boat, v = d/t
∴ v = 84.53 m/(2 min × 60 s/min) ≈ 0.704 m/s
The speed of the boat, v ≈ 0.704 m/s.
If you buy stocks for $20 per share and then sell it for $2 per share, what be the amount of the capital lost?
which inequality is represented by the graph
A. 7/10x-2y > or equal 5
B. 10/7x -2y< or equal 5
C. 7x+10y > or equal 5
D. 2x-7y> or equal 3
Answer:
i would be a be i solve 15 minutes
B
Need help with this………
Answer:
(-4,2)
Step-by-step explanation:
It's the coordinates that the two lines cross at.
Two runners are participating on a 720-metre circular track. They run in opposite directions, each at a constant speed. The first runner needs four minutes to complete the full loop and the second runner needs five minutes. How many metres does the second runner travel between two consecutive meetings of the two runners?
Happy Pride Month!
Answer:
320m
Step-by-step explanation:
let the two runners be A and B
with Va and Vb as their velocities
velocity=distance/time
Va=720/4*60
=3m/s
Vb=720/5*60
=2.4m/s
Let the 2 runners start from a common position X and meet at Y
so the 2 consecutive meetings happen at X and Y
so we have to find time of meeting at Y as we know that of X (which is t=0)
720=Va*t+Vb*t
t(5.4)=720
t=133.33 or t=720/5.4
therefore distance travelled by B =Vb*t
=2.4*720/5.4
=319.99m
=320m
Rachel has two coupons for a bicycle.
Coupon A:
15% off of a $95 bicycle
$18 rebate on a $95 bicycle
Coupon B:
Choose the coupon that gives the lower price.
Then fill in the blank with the correct value.
Coupon A gives the lower price.
Х
The price with coupon A is $(less than the price with coupon B.
Coupon B gives the lower price.
The price with coupon B is $ less than the price with coupon A.
$
Answer: Coupon B gives the lower price
The price of coupon B is 3.75 dollars less than the price of coupon A.
======================================================
Explanation:
15% off means she saves 15% of the original price.
15% of 95 = 0.15*95 = 14.25
Rachel saves $14.25 if she goes with coupon A.
We can see that coupon B gives the lower price because we have more in savings (since 18 is larger than 14.25).
If she goes with option A, then she spends 95-14.25 = 80.75 dollars. If she goes with option B, then she spends 95-18 = 77 dollars. Going with option B means she saves 80.75-77 = 3.75 dollars
Or you could note that 18-14.25 = 3.75 is another way to find out how much is saved when comparing the two coupons.
Help! For solving the compound inequality
Click on the second choice, the 3x one
ill give brainliest.. help plss!! look at the picture.
Answer:
b°+90°=180°(sum of angle in straight line)
b°=180°-90°
b°=90°
a°=30°(vertically opposite angle)
Answer:
A: 30 degrees
B: 60 degrees
C:105 degrees
Step-by-step explanation:
A: vertical angles are congruent
B: solve for the missing angle -- 90+30+?=180
C: Use exterior angle to find the supplementary angle
please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!
Answer:
[tex]Volume~of~cylinder=\pi r^2h[/tex]
[tex]\pi *(10)^2*5[/tex][tex]500\pi[/tex][tex]1570.8~m^3[/tex]-------------------------
hope it helps..
have a great day!!
Answer:
I believe it would be 1570.
Step-by-step explanation:
The formula to find the volume of a cylinder is:
V = pi • r² • h
The diameter is usually 2x the radius:
20m ÷ 2 = 10
The radius would be 10m.
3.14 • 10² • 5 = 1570 cubic m
In Texas, the distance from Austin to Brownwood is 141 miles. It is 171 miles from Brownwood to Corsicana and 157 miles from Corsicana to Austin.
Determine the angle between the routes from Brownwood. Show your work
Answer: acute angles
Step-by-step explanation:
The angle between the routes from Brownwood is Acute angle.
What is Acute angle?Acute angle is an" angle that measures less than 90 degree".
According to the question,
Distance from Austin to Brownwood is 141 miles and distance from Brownwood to Corsicana to Austin 171miles and distance from Corsicana to Austin is 157 miles.
In order to find an angle between routes from Brownwood is Acute angle.
Hence, the angle between the routes from Brownwood is Acute angle.
Learn more about Acute angle here
https://brainly.com/question/2237497
#SPJ2
=) Asif deposits $650 into a bank paying a simple interest. He leaves the money there
for 5 years. At the end of the 5 years, the amount in the bank is $763.75.
Calculate the percentage rate of interest the bank paid per year.
Answer:
interest he got per year is 22.75
Step-by-step explanation:
deposited money = 650
after 5 years = 763.75
interest he got = 763.75 - 650
= 113.75
interest he got each year = 113.75 / 5
= 22.75
Which of the following choices shows another way to write the ratio 7:13?
A. 7 out of 13
b. 13 to 7
c. 52.84%
d. All of these choices are correct.
A sequence is defined recursively by the formula f(n + 1) = –2f(n). The first term of the sequence is –1.5. What is the next term in the sequence?
–3.5
–3
0.5
3
Answer:
The answer is 3
Step-by-step explanation:
It's just wisdom I mean think about it it
1.5 then 3
⭐ Initially, we have to find the reason why it was -1.5:
[tex]\large {\text {$ \sf f (n+1) = -2 f(n) $}}[/tex]
➡️ Having n, then we'll find the value of n, then we'll replace it with the found result.
[tex]\large {\text {$ \sf f (x+1) = -2.x = -1,5 $}}[/tex]
⌛ So, we will have to find what x is worth in this case:
[tex]\large {\text {$ \sf f ( 0,75 +1 ) = -2 \cdot 0,75 $}}[/tex]
[tex]\large {\text {$ \sf f ( 0,75) = -1,5 $}}[/tex]
→ Knowing this...
[tex]\large {\text {$ \sf f ( 1,5 + 1 ) = -2 \cdot 1,5 $}}[/tex]
[tex]\large {\boxed {\boxed {\sf f ( 2,5 ) = -3 }}}[/tex] [tex]\checkmark[/tex]
_____________________________
The ratio of boys who play soccer, hockey and
rugby at a high school is 6:4:5 respectively.
If there are 72 boys playing hockey, how many
boys are there altogether at this high school?
Answer:
270
Step-by-step explanation:
72 ÷ 4 = 18
6 + 5 = 11
18 × 11 = 198
198 + 72 = 270
There are 16 girls and 18 boys in a class. The teacher chooses a student's name at random to answer a question.
What is the probability that the teacher chooses a girl to answer the question?
ОА. и
O B. 1 /
8
17
OD
Answer:
8/17
Step-by-step explanation:
total students = 34
no of girls = 16
no of boys = 18
probability to choose a girl to answer the question = no of girls/total students
=16/34
=8/17
I need help again... please and thank you very much you are helping
Answer:
$3.15
Step-by-step explanation:
Method 1:
4 oranges = 1.40
9 oranges = x
1.40 / 4 = 0.35
This is 0.35 per orange
0.35 x 9 = 3.15
$3.15
Method 2:
1.40/4 = x/9
12.6 = 4x (cross multiply 9 and 1.4 and cross multiply 4 and x)
x = 12.6 / 4
x = 3.15
$3.15
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
Which number could not be a value of x?
Answer:
21
Step-by-step explanation:
The values for the third side of a triangle must be greater than the difference of the two other sides and less than the sum of the two other sides
12 -8 < x < 12+8
4 < x < 20
The third side cannot be 21
Answer:
21
Step-by-step explanation:
The sum of two sides of a triangle must be greater than the third side
Which algebraic expression would NOT be equivalent if the number and the variable were reversed? A. N+8 B. M−5 C. K×8 D. 4+x
Answer:
B) M-5
Step-by-step explanation:
the commutative property does not apply to subtraction or division, only addition and multiplication
Given a circle in the complex plane with a diameter that has endpoints at:
-12 − i and 18 + 15i
Find the center of the circle.
Answer:
the second part to the question is 17
Step-by-step explanation:
edge 2021 :)
have a lovely day!
What is the same as writing that “Angles 5 and 6 are supplementary adjacent angles”?
Angles 5 and 6 are not next to each other and sum up to 180°.
Angles 5 and 6 are not next to each other and sum up to 90°.
Angles 5 and 6 are next to each other and sum up to 180°.
Angles 5 and 6 are next to each other and sum up to 90°.
Answer:
Angles 5 and 6 are next to each other and sum up to 180°.
Step-by-step explanation:
supplement means adding up to 180
Angles 5 and 6 are next to each other and sum up to 180°.
Step-by-step explanation:
supplement means adding up to 180