Answers
Related Questions
Find the area of a circle whose area equals the half of the sum of the areas of two circles with radil 2 and 3.
13
5
6.5
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Step-by-step explanation:
step 1. a circle with r = 2 has area of (pi)r^2 = (pi)(4) = 4pi
step 2. a circle with r = 3 has area of (pi)r^2 = (pi)(9) = 9pi
step 3. the area, A, of a circle is half the sum of the area of the circles with r = 2 and r = 3
step 4. A = (4pi + 9pi)/2 = 13pi/2 = 6.5(pi).
step 5. the answer is not 6.5 but is 6.5(pi) or 6.5 times pi.
There are many cylinders with a height of 9 inches. Let R represent the radius in inches and V represent the volume in cubic inches.
R V
1
2
3
Complete the table relating the radius and volume of cylinders with height 9 inches. Write each volume as a multiple of pi or round to the nearest cubic inch.
Is there a linear relationship between the radius and the volume of these cylinders? Explain how you know.
If a cylinder with height 9 inches and radius (R) s filled with water, it can fill a certain pitcher. How many of these pitchers can a cylinder with height 9 inches and radius 2r fill? Explain how you know.
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Answer:
R V
1 9π in³
2 36π in³
3 81π in³
Step-by-step explanation:
For, r = 1
V = π(1)²9 = 9π in³
For, r = 2
V = π(2)²9 = 4*9π in³ = 36π in³
For r = 3
V = π(3)²9 = 9*9π in³ = 81π in
R V
1 9π in³
2 36π in³
3 81π in³
Factor completely.
x^4-11x^2+28
Answers
Answer:
x⁴ - 11x² + 28
= x⁴ - 4x² - 7x² + 28
= x²(x² - 4) - 7(x² - 4)
= (x² - 7)(x² - 4)
[tex] = (x - \sqrt{7} )(x + \sqrt{7} )(x - 2)(x + 2)[/tex]
x^4 - 11x^2 + 28
Write - 11x^2 as a difference
x^4 - 4x^2 - 7x^2 + 28
Factor out x^2 from the expression
x^2 x (x^2 - 4) - 7x^2 + 28
Factor out - 7 from the expression
x^2 x (x^2 - 4) - 7 (x^2 - 4)
Factor out x^2 - 4 from the expression
(x^2 - 4) x (x^2 - 7)
Use a^2 - b^2= (a-b)(a+b) to factor the expression
(x-2) x (x + 2) x (x^2 - 7)
And that’s how it’s (x-2) x (x + 2) x (x^2 - 7) ..... yea and .-.
PLEASE HELP ASAP IF YOU RIGHT YOU GET BRAINLLEST
The following parallelogram is reflected over the x-axis and then reflected over the y-axis. What are the coordinates of the vertices of the image?
(2, 1), (1, -1), (-2, -1), (-1, 1)
(1, 2), (-1, 1), (-1, -2), (1, -1)
(1,1), (2, -1), (-2, 1), (-1, -1)
(1, 1), (-1, 2), (1, -2), (-1, -1)
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Answer:
its number 3
Step-by-step explanation:
Answer:
answer
Step-by-step explanation:
(-4, 0)
(-9, 0)
(-9, 5)
(1, 5)
36472 is a __% increase compared to 14921
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Answer:
= 144.434% increase
Step-by-step explanation:
i think so but i could be wrong?
The sum of two integers is 20 and the sum of their square is less than 362. Find all pair of integers that satisfy the given condition
Answers
Answer:
19 and 1
Step-by-step explanation:
19+1=20
19²+1²=361
361<362
Prism A is similar to Prism B. The volume of Prism A is 2790 cm3. What is the volume of Prism B?
21, 760 cm3
1360 cm3
680 cm3
340 cm4
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Answer:
D
Step-by-step explanation:
I will give a brainliest to the person who has gets the correct answer with an explanation of how you solved it.
I need answer ASAP!
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Answer: [tex]V = 24,416.64m^{3}[/tex]
Step-by-step explanation:
Solve for v by simplifying both sides of the equation, then isolating the variable.
Formula: [tex]v = \frac{4}{3} \pi r^{3}[/tex]
Plugin the variable: [tex]v = \frac{3}{4}\pi (18^{3})[/tex]
Solve:
[tex]v = \frac{4}{3} 3.14 (5,832)[/tex]
[tex]v = 4.18666666(5,832)[/tex]
[tex]V = 24,416.64m^{3}[/tex]
A local boys club sold 156 bags of mulch and made a total of $596. It sold two types of mulch: hardwood for $4.00 a bag and pine bark for $3.75 a bag. How many bags of each kind of mulch did it sell?
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we have two equations. I’ll call hardwood h, and pine bark p.
The number of bags: h + p = 156
The cost of the bags: 4h + 3.75p = 596
Start by solving the first equation for h in terms of p
h = 156 - p
Then substitute that in the other equation for h, and solve for a numerical value of p
4(156-p) + 3.75p = 596
624 -4p + 3.75p = 596
28 = 0.25p
p = 112
Now plug that in to the first equation to get the numerical value of h
h + p = 156
h + 112 = 156
h = 44
Check the math:
4(44) + 3.75(112)
176 + 420 = 596
The points (6,6) and (8,h) fall on a line with a slope of
–
3. What is the value of h?
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Answer:
h=3
Step-by-step explanation:
(12-6)/(h--5)=3/4 ~ basic slope equation
6/(h+5)=3/4 ~ simplification
24=3(h+5) ~ multiply both sides by (h+5) and 4 to clear the fractions
24=3h+15 ~ distribute the 3
9=3h ~ subtract 15
h=3 ~ divide by 3
Answer:
Step-by-step explanation:
slope = -3
slope = (h-6)/(8-6) = (h-6)/2 = -3
h-6 = -6
h = 0
the cost of cereal is 35rand for 1 kg , calculate the cost of 25g
Answers
Answer:
7.14*10^-4rand
Step-by-step explanation:
If the cost of cereal is 35rand for 1 kg, this can be expressed as;
35 and = 1kg
To get the cost of 25grams, we can write
25g = x
0.025 kg = x
Divide both expressions
35/0.025 = 1/x
35x = 0.025
x = 0.025/35
x = 7.14*10^-4rand
Hence the cost of 25g is 7.14*10^-4rand
Skdhauajbsshjzmxjakxjxdj I’m confused
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Answer:
60% i think
Step-by-step explanation:
Maggie made 3kg of fudge. She and her friends ate some and now there are 1 3/4 kg left. How many kg of fudge did maggie and her friends eat?
Answers
Answer:
1 1/4 kg
Step-by-step explanation:
Maggie made 3kg of fudge. She and her friends ate some and now there are 1 3/4 kg left. How many kg of fudge did maggie and her friends eat?
The kg of fudge thay maggie and her friends ate is calculated as:
Initial kg of fudge - kg of fudge left
= 3 kg - 1 3/4 kg
3/1 kg - 7/4 kg
Lowest common denominator = 4
= 12 - 7/4 kg
= 5/4 kg
= 1 1/4 kg
Multiply.
[x- (3+4i)][x-(3-4)]
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Answer:
(x−3−4)(x+1)
Step-by-step explanation:
y = x + 2
y = -5/2x-5
Answers
{ y = -5/2x - 5
x + 2 = -5/2x-5
x = -2
y = -2 + 2
y = 0
(x,y) = (-2,0)
——
Check for solution
{ 0 = -2 + 2
{ 0 = -5/2 (-2) - 5
{ 0=0
{ 0=0
I need help! pls help me
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Answer:
1. DC
2. BC
3. EA
4. ABC
5. BAC, DCA, DAC (i think any of these options work)
6. BAD
7. CDA, ABC
8. 360
Step-by-step explanation:
Find the area of the future. Round to the nearest tenth if necessary.
use the formulas
for a circle
[tex]a = \pi r ^{2} [/tex]
for a semi circle
[tex]a = \frac{1}{2} \pi r ^{2} [/tex]
for a triangle
[tex]a = \frac{1} {2} bh[/tex]
for a trapezoid
[tex]a = \frac{1}{2} (b _{1} + b_ {2})h[/tex]
for a parallelogram
[tex]a = bh[/tex]
Answers
WILL GIVE BRAINLIEST!
True or False.
A plumber who earns $12 per hour and works 13½ hours has a total earnings of $162.
True
False
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Answer:
True
Step-by-step explanation:
12*13=156
12*0.5=6
156+6=162
Then we put a money sign in front and a . point after the 2 and two 0's and we get $162.00
pick the number that will make the following expression true.
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Answer:
78 i believe
Step-by-step explanation:
Answer:
78
Step-by-step explanation:
Divide 27 by 100 and you will see it equals 0.27
knowing this made me realize that the unknown number must be the fraction form of 0.78
Um I’m so confused , help ?
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Can somebody please help??
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Answer:
-31104
Step-by-step explanation:
They are each Multiplying by 6 so 5184 which also multiply and add the negative sign so you get -31104
Mr. Doyle washed 1 4 of his laundry. His son washed 3 7 of it. Who washed most of the laundry? How much of the laundry still needs to be washed?
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His son washed more laundry, and 9/28 still needs to be done.
Answer:
his son washed the most
Step-by-step explanation:
3/7 is greater than 1/4
Can anyone explain how to do this?
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9514 1404 393
Answer:
see attached
Step-by-step explanation:
The mnemonic SOH CAH TOA reminds you of the relationships between sides and trig functions. The relevant relations here are ...
Sin = Opposite/Hypotenuse
Cos = Adjacent/Hypotenuse
In your diagram, leg 'a' is opposite angle α and adjacent to angle β. Similarly, leg 'b' is opposite angle β and adjacent to angle α. The hypotenuse is 'c' in all cases.
So, filling the table is a matter of identifying adjacent and opposite legs. You will notice that the sine of α is the cosine of β and vice versa.
If x>0 and y=0, Where is the poiny (x,y) located?
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Answer:
x-axis
Step-by-step explanation:
y = 0==> x-axis
Answer:
the answer would be x-axis
Drag each angle measure to the correct location on the image. Not all angle measures will be used.
Determine the measures of the angles.
35°
70°
75°
100°
105°
110°
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Answer:
i believe this is the question you asked added picture of correct answer on graded test
Step-by-step explanation:
One-third of a number decreased by six equals eight. What is the number?
6
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Answer:
The number is 42.
Lydia is playing Galaxy 8RX. After three misses, the game is over. Last week, Lydia kept track of how long her games lasted. Hse msde a line plot of her data. Lydia said,"My best time is 2 3/4 minutes longer than my worst time because 4 1/4-1 1/2=2 3/4. Is subtraction the correct operation to compare Lydia's best and worst times?Explain. Are Lydia's calculations accurate?Show how you know. In the line plot, what do the numbers Lydia subtracted represent? Does Lydia's conclusion make sense? How did you decide? If not, what can you do to improve her reasoning?
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Answer:
Yes ; Yes ; Yes it makes sense
Step-by-step explanation:
1.) Lydia used subtraction operator to define and establish a relationship between her best and worst game times ; Hence we could conclude that Lydia is correct as this gives the range between both times.
From the numbers given in the question as their is no graph attached :
4 1/4 - 1 1/2
17/4 - 3/2
(17 - 6) / 4
11 /4
= 2 3/4
The subtracted numbers represent the duration of each of the three times game was played ; Hence the numbers represents the game times.
Yes ; Her conclusion makes sense ; as she was able to deduce the range between her best and worst game time
Please help! (Find the area of the shaded region)
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Answer:
9.43 ft
Step-by-step explanation:
First, we need to find the area of the entire circle(shaded & unshaded), which is 12.57, with a radius of 2 ft. Next, we find the area of the white area, and NOT the shaded area, which is 3.14, with a radius of 1 ft. Now, we need to subtract the white area(3.14) from the total area(12.57), which is 9.43.
Hope this helps!
Mike installed the window shown. How many square feet is the window? Use 3.14 for pi. Round to the nearest tenth.
Answers
Answer: 3.9ft²
Step-by-step explanation:
Find the area of the rectangle first:
= Length * Width
= 2 * 1.5
= 3 ft²
Find the area of the semi-circle by finding the area of a circle and dividing it by 2:
= πr²
= 3.14 * 1.5/2 * 1.5/2
= 1.76625ft²
Divide by 2:
= 1.76625/ 2
= 0.88 ft²
Add the area of the rectangle to the semi-circle:
= 3 + 0.88
= 3.9ft²
Kayla's recipe needs 4 cups of milk and 6 cups of grated cheese. What is the ratio of the number of cups of milk to the number of cups of grated cheese in the recipe?
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Answer:
4:6 or 2:3
Step-by-step explanation:
Let me know if this is correct!