Answer:
29
Step-by-step explanation:
5^2=25
2^2=4
25+4=29
Answer: 29 is the final answer
Step-by-step explanation: Have a nice day - Lily ^_^
Find the area and perimeter of the shaded region. Stuck on this one can someone help me
Answer:
perimeter-
perimeter outer rectangle = 2 (l+b)
=2×8+9
= 2×17
2×17 =34 cm sq.
perimeter of inner rectangle = 2 (l+b)
= 2×5+3
=2× 8
= 16 cm sq.
perimeter of shaded portion= 34 - 16
= 18 cm sq.
area-
area of inner rectangle =l×b
l×b = 3×5
3×5=15
15 cm sq.
area of outer rectangle =l×b
l×b= 9×8
9×8= 72
72 cm sq.
area of shaded portion = 72 -15 =57 cm sq.
hey there! In second method i have done first area of inner rectangle but you have to do first area of outer rectangle...
hope it helps you....
Answer:
Let A1 = be the large rectangle and A2 the small rectangle
=> Area A1: S1 = a1.b1 => S1 = 8 x 9 = 72m2
=> Area A2: S2 = a2.b2 => S2 = 3 x 5 = 15 m2
=> Area of the remaining surrounding square: S1-S2 = 72-15 = 67m2
=> Perimeter A1: P1 = 2 (a1 + b1) = 2 (9 + 8) = 34m
=> Perimeter A2: P2 = 2 (a2 + b2) = 2 (3 + 5) = 16m
=> Perimeter of the surrounding square: P1-P2 = 34-16 = 18m
Step-by-step explanation:
Describe at least two events where the probability is 0.
Answer:
world peace, and ending world hunger. Human kind is far too cruel to fix these areas.
Step-by-step explanation:
Being in space without oxygen has a 0% probability of survival.
Cooking noodles is boiling water has a 0% chance of the noodles not cooking.
These may be odd examples but they are accurate.
-Northstar
Somebody help plz I need some help
Answer:
[C] 44°
Explanation:
That Is A Right Angle, So x° + 46° Needs To Equal 90°Equation: x + 46 = 90
Subtract 46 From Both Sides
x + 46 - 46 = 90 - 46
x = 44
B = 44°Jamal wants to install a rectangular 2025 cm² window in his garden shed. That area of window comes in several length/width combinations, and he wants to minimize the perimeter to prevent drafts. What is the least perimeter possible for the window?
Answer:
The ideal size will be a 45cmx45cm square, giving you a perimeter of 180cm.
Step-by-step explanation:
The shortcut answer here is that the square will always be the most efficient rectangle for border to area, so the sides should be the square root of 2025 cm, or 45 cm each, giving you a total of 180 minimum perimeter.
The full solution is to express the perimeter as a function of the length and width, define either length or width as a function of the other, take the entire expression's derivative and solve for zero. Let's do it:
So first the area:
2025 = wl
l = 2025 / w
Now the sides:
[tex]p = 2w + 2l\\p = 2w + 2(2025 / w)\\p = 2w + 4050 / w[/tex]
Then we can take its derivative with respect to w
[tex]p = 2w + 4050\frac{1}{w}\\\frac{dp}{dw} = 2 + 4050\frac{-1}{w^2}\\[/tex]
Now we can set the derivative to zero, and solve for w:
[tex]\frac{dp}{dw} = 2 + 4050\frac{-1}{w^2}\\0 = 2 + \frac{-4050}{w^2}\\-2 = \frac{-4050}{w^2}\\2w^2 = 4050\\w^2 = 2025\\w = \sqrt{2025}\\w = 45[/tex]
So the width being 45, we can get the length by dividing the area by that amount, which of course is also 45.
The path of a diver diving off a 10-foot platform can be represented by the function h(x) = - 0.5(x^2 - 4x - 21) where h is the diver's height above water and x is the horizontal distance from the platform (in feet).
What does the positive zero represent?
Answer:
x = -3 and 7
Step-by-step explanation:
Given the path of a diver expressed as;
h(x) = - 0.5(x^2 - 4x - 21)
The positive zero occur at when h(x) = 0
Substitue
0 = - 0.5(x^2 - 4x - 21)
-0.5x^2 + 2x + 10.5 = 0
Multiply through by -10
5x^2 - 20x - 105 = 0
x^2 - 4x - 21 = 0
x^2 - 7x+3x - 21 = 0
x(x-7)+3(x-7) = 0
(x+3)(x-7) = 0
x = -3 and 7
Hence the positive zero displacement occurs at x = -3 and 7
Which of these is not a method to solve systems of
equations?
-Substitution method
-Graphing method
-Addition method
-Difference of squares method
Answer:
Fourth option
Step-by-step explanation:
The answer is the fourth option "difference of squares method." It's not the first option because the substitution method is when you pick one of the equation in a system of equations, solve it for a variable and then plug the variable into the other equation to help solve. It's not the second option because the graphing method is used to solve a system of equations by graphing the equations on the same coordinate plane, it's not the third option because the addition method is also known as the elimination method which is the third method to solving a system of equations. Therefore your answer is the fourth option.
Hope this helps.
A cylinder has a radius of 3 in and a volume of approximately 136.78 in? What is the height of the cylinder?
Round to the nearest tenth.
Answer:
4.835(I don't know unit.(m/in/cm)
Step-by-step explanation:
volume=πr^2h
136.78=22÷7×3^2×h
h=136.78×7÷(22×9)=4.835
Which of the equations are true identities?
A. (9k – 8)(9k + 8) = 81k2 + 64
B.(3m +2n)(6m – 4n) = 18m²
18m2 – 8n?
Choose 1 answer:
Answer:
We have two expressions, let's see if they are true or not:
A: (9k - 8)*(9k + 8) = 81*k^2 + 64
To prove this, we only need to start in the left side and see if we can construct the right side:
(9k - 8)*(9k + 8) = (9k)*(9k) + (9*k)*8 - (9k)*8 + 8*(-8)
= (9k)^2 - 8^2
= 9^2*k^2 - 64 = 81*k^2 - 64
This is different than the thing in the original equation, then this one is not an identity.
B) (3m +2n)(6m – 4n) = 18m^2 – 8n
Same as before, we start at the left side and work it out.
(3m + 2n)*(6m - 4n) = (3m)*(6m) + (3m)*(-4n) + (2n)*(6m) + (2n)*(-4n)
= 18*m^2 -12*m*n + 12*m*n - 8*n^2
= 18*m^2 - 8*n^2
Notice that here we have an "n^2" while in the original equation we have only an "n".
This may be an error in the question and the exponent is missing, in that case, this equation would be an identity, but it is not as how is written in the question.
Then neither A nor B are correct.
Answer:
only b
Step-by-step explanation:
Find the area of the shape below. All measurements are in miles.
6
8
1
15.23
1
1
P and q are points on the line y=2-4X
Draw the line y= 2-4X for vales of x from -2 to 2
Answer:
`The answer is below
Step-by-step explanation:
P and q are points on the line y=2-4X. complete the coordinates of P and Q, P(0, ) Q( ,0)
Draw the line y= 2-4X for vales of x from -2 to 2
Solution:
The equation of a line is given by:
y = mx + b
Where y and x are variables, m is the slope of the line and b is the y intercept (that is value of y when x = 0).
The line of y = 2 - 4x is drawn by finding the corresponding values of y for x from -2 to 2 and plotting on a graph.
x: -2 -1 0 1 2
y: 10 6 2 -2 -6
The value P(0, ) Q( ,0)
The y coordinate of point P is gotten by substituting x = 0:
y = 2 - 4(0) = 2
P = (0, 2)
The x coordinate of point Q is gotten by substituting y = 0:
0 = 2 - 4x
4x = 2
x = 0.5
Q = (0.5, 0)
Substitute the value for the variable with the number given and solve.
11b - 65 =
Substitute 6 for b
Answer:
1
Step-by-step explanation:
11(6) - 65
66 - 65
1
Georgia buys 4 books online. Each book is the same price. She has a discount code
for $5 off the entire purchase. She pays a total of $60.
Alejandro makes donations in the amount of $100 every December to
5 of his favorite charities. He pays for the donations by check. What is the
change in his checking account balance after making these donations?
Answer:
the balance will decreases by 500
-500 represents his account balance
Step-by-step explanation:
B
C
A new car is purchased for $42,000 and over time its value depreciates by one half
every 7 years. How long, to the nearest tenth of a year, would it take for the value of
the car to be $5,800?
Answer:
t=20
Step-by-step explanation:
delta math blessed.
Answer:
t=20
Step-by-step explanation:
I do not have one, I apologise.
please help me with this
The distance traveled by a snowball thrown straight down from the top of a bluff can be calculated with the equation d=ut+12gt2, where d is the distance traveled in meters, u is the initial velocity in meters per second, t is the time in seconds, and g is the acceleration due to gravity, which is 9.8ms2. If the snowball traveled 200 meters in 5 seconds, what was its initial velocity?
Answer:
15.5 m/s
Step-by-step explanation:
Using the equation, d = ut+1/2gt² where all the variables have meaning as given above, making u subject of the formula, we have
d = ut+1/2gt²
d - 1/2gt² = ut
d/t - 1/2gt²/t = u
u = d/t - 1/2gt
Since d = 200 m, t = 5 s and g = 9.8m/s², substituting the values of the variables into the equation, we have
u = d/t - 1/2gt
u = 200 m/5 s - 1/2 × 9.8m/s² × 5 s
u = 40 m/s - 49 m/s ÷ 2
u = 40 m/s - 24.5 m/s
u = 15.5 m/s
So, the initial speed of the snowball is 15.5 m/s
TIMED URGENT! REALLY APPRECIATE SOME HELP! BRAINLIEST!
Calculate the slope of the line passing through the points (-1, -5) and (-9, -1)
a) undefined
b) 0
c) -0.5
d) -2
Answer:
C
Step-by-step explanation:
(y2-y1)/(x2-x1) = slope
y2-y1 = (-1)-(-5) = 4
x2-x1 = (-9)-(-1) = -8
slope = 4/(-8) = -0.5
what is 4.0 x 10 by the 2nd power
Help me plzzzz, thanks If you do
hope it's helpful ❤❤❤❤
THANK YOU.
In a survey of 800 people, 32% preferred cats and 27% preferred dogs. How many more people preferred cats than preferred dogs?
Calculate the amount of people on both sides.
32% preferred cats
32% of 800
0.32 × 800 = 256 people
27% preferred dogs
27% of 800
0.27 × 800 = 216 people
So 256 people preferred cats and 216 people preferred dogs.
256 - 216 = 40 people
40 more people preferred cats than preferred dogs
40 people preferred cats more than preferred dog.
What is percentage?Percentage is a measurement to find value of given number out of hundred.
Given that,
Total number of people participated in survey = 800.
Percentage of people who preferred cats = 32%,
And percentage of people who preferred dogs = 27%.
The percentage of people who preferred cats more than preferred dogs
= 32 - 27
= 5 %
The number of people preferred cats more than preferred dogs
= 800 x 5/100
= 40.
There are 40 more people preferred cats than dog.
To learn more on Percentage:
https://brainly.com/question/24120406
#SPJ2
how to find the domain of a function
Answer: For the numerator, we know we have to have a positive number in the expression for ln. Therefore, 0">x−2>0, which means 2">x>2. Combining these, we get the domain of the function is all positive values for x which are greater than 2. In interval notation, this is simply (2,∞).
Step-by-step explanation:
What is the measure of 1?
Answer:
1
Step-by-step explanation:
pls mark brainliest
answer:
attach a picture so that we can answer your question. we need to see 1.
Can someone please help me?
Answer:
The angle between the two sides of the right triangle is aproximately 31.003º.
Step-by-step explanation:
From image attached on question we infer that we need to find the angle between sides of lengths 6 (adjacent leg) and 7 (hypotenuse) in the right triangle. The angle can be found by means of this trigonometric ratio:
[tex]\cos \alpha = \frac{6}{7}[/tex]
[tex]\alpha = \cos^{-1} \frac{6}{7}[/tex]
[tex]\alpha \approx 31.003^{\circ}[/tex]
The angle between the two sides of the right triangle is aproximately 31.003º.
You buy 3 bags of sand and 5 bags of pea gravel for $26. In a second purchase (at the same prices), you buy 4 bags of sand for $8. Let z represent the price in dollars) per bag of sand
and let y represent the price in dollars) per bag of pea gravel Use a graph to find the price per bag of sand and the price per bag of pea gravel
Line
Undo
Redo
Reset
Answer:
2z and 4y
Step-by-step explanation:
We first have to use the second purchase to figure this out, if 4 bags of sand is $8. We have to divide 8 by 4, which we get $2. We use this to find the bags of pea gravel. Since you bought 3 bags, 3 times 2 is 6. We subtract 6 from 26 leading to 20 dollars. We also buy 5 bags of pea gravel so we have two numbers, 20 and 5. We divide 20 and 5 and we get 4 dollars for 1 bag of pea gravel. If this is not what you meant I apologise.
if one zero of the quadratic polynomial x²+3x+k is 2, then the value of k is. [ ]
a) 10
b)-10
c)5
d)-5
Answer:
b) -10
Step-by-step explanation:
x^2 + 3x + k = (x - 2)(x - a)
(x - 2)(x - a) = x^2 - 2x - ax + 2a = x^2 + [-2 - a)x] + 2a
-2 - a = 3
2a = k
a = -5
k = 2(-5) = -10
Answer: b) -10
Answer:
GET READY FOR FIGHT !!!!!
Step-by-step explanation:
*Intense music in background*
PLEASE HELP!!! THIS IS MY LAST QUESTION!!!! PLEASE!
Answer:
2, -2, 0
hope it's right :)
There are 3 “bumps” on the graph ( the u and upside down u shaped parts)
This degrees are the number of bumps + 1
So this graph has 4 degrees.
The arrows at the ends are pointing up so the sign is positive
+, 4th
Marcy wants to paint the sides of the wooden storage chest shown below gray except the white lid. What is the surface area?
Answer:
Surface area = 2,160 in²
Step-by-step explanation:
Given:
Length of box = 15 in
Width of box = 30 in
Height of box = 24 in
Find:
Surface area
Computation:
Surface area = 2h[l+b]
Surface area = 2(24)[30 + 15]
Surface area = 48 x 45
Surface area = 2,160 in²
what is the answer for y=__x+__
Answer:
y=1/-4x+4
Step-by-step explanation:
hey
Step-by-step explanation:
Slope (x) is rise/run. From one intersecting point to the next, we find it is moving 4 y down and 1 x over. Using this we conclude the slope is -4/1x (or -4x)
The second number in the system is b, or y-intercept. The line intercepts at 4y. If we combine these together, the outcome is y = -4x + 4
After riding the stationary bike for just 8 minutes, Betty had burned 50
calories. How long must she ride if she wants to burn 325 calories?
Answer:
She has to ride for 52 minutes!
Step-by-step explanation:
50/8=6.25
325/6.25=52
6.25*52=325
Answer:
52 minutes
Step-by-step explanation:
50/8=6.25
325/6.25=52
6.25*52=325
Can a triangle be formed using the side lengths of 8 ft, 6 ft, and 4ft? If so, classify the triangle.
Yes, a triangle can be formed using those side lengths. This is because when using Triangle Inequality Theorem, any two side lengths added together is greater than the third side. The triangle is also scalene since none of the sides have the same measure.