Answer: 3x^2+2x-8
Step-by-step explanation:
Answer:
3xto the power of 2+2x -8
1. Hannah bought a package of 12 pens.
She took of the pens to school. How
many pens did Hannah take to school?
Answer:
12
Step-by-step explanation:
If Hannah bought 12 pens and brought them to school, then she would have brought 12 pens to use during school.
Find the area. Show your work.
Pls, help!! I will give Brainliest to the first answer that is correct!
Answer:
1. 1/3 pi r^2 h
2. pi r^2 h
3. 1/3 B h
4. lwh
5. Bh
Match the shape with the correct formula for finding the volume :-
SHAPES :-
ConeCylinder Triangular PrismRectangular Prism PyramidFORMULAE :-
[tex] \sf lwh[/tex] [tex] \sf Bh[/tex] [tex] \sf \frac{1}{3} \pi {r}^{2} h[/tex] [tex] \sf \pi {r}^{2} h[/tex] [tex] \sf \frac{1}{3} Bh[/tex] ____________________Solution :-Given Information :- Shapes Formulae to calculate Volume To Do :-Match the shape with the correct formula for finding the volume. Calculation :-Cone = [tex] \sf \frac{1}{3} \pi {r}^{2} h[/tex] Cylinder = [tex] \sf \pi {r}^{2} h[/tex] Triangular Prism = [tex] \sf Bh[/tex] Rectangular Prism = [tex] \sf lwh[/tex] Pyramid = [tex] \sf \frac{1}{3} Bh[/tex] ____________________Final Answers :- Cone = [tex] \sf \frac{1}{3} \pi {r}^{2} h[/tex] Cylinder = [tex] \sf \pi {r}^{2} h[/tex] Triangular Prism = [tex] \sf Bh[/tex] Rectangular Prism = [tex] \sf lwh[/tex] Pyramid = [tex] \sf \frac{1}{3} Bh[/tex] ____________________it takes 7 Carpenter 7 hours to make 7 chairs. How long would it take 100 Carpenters to make 100 chairs?
15 hours
100 hours
10 hours
7 hours
Answer:
100 hours
Step-by-step explanation:
it's very simple just reduce it to 1 carpenter 1 hour and 1 chair
Activity 2 Compute for the following: Speed; Distance, Time
1. A car travels 300 kom in 6 hours. What is the average speed of the car in km/h?
Given
Solution
Car travels in 300 kom ( distance) in
6 hours (time)
2. What is the speed of a jet plane that flies 8100 kon in 9 hours? (in km/h)
Given:
Solution
Jet travels 8100 km (distance)in
9 hours (time)
3. A storm is moving toward your house at a speed of 20 kmh.it is now 60 km away from your house. In what time will the storm reach your house?
Given:
Solution:
Storm moving at 20 km/h (speed) at
60 kun (distance)
Speed and direction
In describing the motion of an object, we do not just describe
Answer:
1. 50 km/h
2. 900 km/h
3. 3 hours
Step-by-step explanation:
1. The distance the car travels, Δd = 300 km
For how long it takes the car to travel the 300 km, Δt = 6 hours
Average speed, [tex]\overline v[/tex], is given as follows;
[tex]\overline v = \dfrac{The \ total \ distance }{The \ total \ time \ it \ takes } = \dfrac{\Delta d}{\Delta t}[/tex],
[tex]\therefore \overline v = \dfrac{300 \ km}{6 \ hours} = 50 \ \dfrac{km}{hour}[/tex]
The average speed of the car, [tex]\overline v[/tex] = 50 km/h
2. The distance the jet plane flies, d = 8,100 km
For how long it takes the the jet plane to fly the 8,100 km, t = 9 hours
The speed, v, of the jet plane is given as follows;
[tex]Speed, \ v = \dfrac{Distance}{Time} = \dfrac{d}{t}[/tex]
[tex]v = \dfrac{The\ distance \ the \ jet plane \ flies}{The \ time \ it \ takes \ to \ fly \ thart \ distance } = \dfrac{d}{t }[/tex],
[tex]\therefore v = \dfrac{8,100 \ km}{9 \ hours} = 900 \ \dfrac{km}{hour}[/tex]
The speed of the jet plane, v = 900 km/h
3. The speed of the storm, v = 20 km/h
The distance of the storm from the house, d = 60 km
The time 't' it takes the storm to reach the house is given as follows;
[tex]Speed, \ v = \dfrac{d}{t}[/tex]
Therefore, by cross multiplying and dividing by 'v', we get;
[tex]Time, \ t = \dfrac{d}{v}[/tex]
Plugging in the known values of 'd' and 'v' gives;
[tex]Time, \ t = \dfrac{60 \ km}{20 \ \dfrac{km}{hour} } = 3 \ km \times \dfrac{hour}{km} = 3 \ hours[/tex]
The time it takes the storm to reach the house, t = 3 hours.
6x + 2(5x -6) how do i get the answer?
Simplify. (Use the form a + bi.)
3 − 6i
−7i
Answer:
3 - 13i
Step-by-step explanation:
3 - 6i - 7i
3 - 13i
Meagan has a bag with 8 red cubes, 3 yellow cubes, and 5 green cubes. What is the probability of
hat she will pick a red cube, keep it, and then pick another red cube?
A.8/17
B.7/30
C.7/32
D.8/18
Answer:
B. 7/30
Step-by-step explanation:
1st time to pick red is 8/16 8 red cubes out of 16 are red
2nd time to pick red is 7/15 7 red cubes out of 15 are red,
*if one red is picked already
8/16 x 7/15 = 7/30
Thank you so much :)
Answer:
13
Step-by-step explanation:
The mode is just the number that appears the most often in a set of data. The table states that 13 appears 5 times in the data, therefore 13 is the mode.
A shopper at a clearance store is pleased to discover some microscopes on sale for $24 dollars each. The original price tags read $40. What percent is the discount?
Tamir bought 2 1/2 pounds of fish at $5.50 per pound, and two bananas at the price shown.
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer: 2.5 x 5.5 = 13.75
Explanation:
I hope this helped!
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Tamara earned an a on 5/8 of her spelling test of those spelling says she earned a perfect score on 1/5 of them find what fraction of cameras total spelling test did she on a perfect score show your work
Answer:
she had a perfect score in 1/8 of all tests
she had a perfect score in 4 tests
Step-by-step explanation:
Tamara earned an A in 5/8 of all the tests she took.
In 1/5 of the those tests she got an A, she had a perfect score.
1/5 of 5/8 is 1/5 * 5/8 which equals 5/40 which can be reduced to 1/8.
That means that in 1/8 of all tests she took she got a perfect score.
She took a total of 32 spelling tests.
1/8 of 32 = 1/8 * 32 = 32/8 = 4
Answer:
she had a perfect score in 1/8 of all tests
she had a perfect score in 4 tests
Name the polygon. Then tell whether it is a regular polygon or not a regular polygon.
The polygons name is an octagon and is not a regular polygon
How many yards are equal to 144 inches? (15 points)
Select one:
a. 4 yards
b. 12 yards
c. 36 yards
d. 5,184 yards
Answer:
A- 4 yards
Step-by-step explanation:
Hope this helps!
Have a nice day <3
After changing the unit of 144 inches into yards the number equivalent to 144 inches is 4 yards. Hence option (a) is true.
Given that,
Change the number 144 inches into yards.
Used the concept of measurement unit which stated that,
A measurement unit is a standard quality used to express a physical quantity. Also, it refers to the comparison between the unknown quantity with the known quantity.
Since we know that,
1 yards = 36 inches
1 inch = 1/36 yards
So, we can change the number 144 inches into yards,
1 inch = 1/36 yards
144 inches = 144/36 yards
= 4 yards
Therefore, 144 inches is equivalent to 4 inches.
Option (a) is true.
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HEY YALL CAN U HELP PLZ THANK U
Answer: D. 2
Step-by-step explanation:
Given
y-1=2(x--2)
Change signs
y-1=2(x+2)
Expand parenthesis
y-1=2x+4
Add 1 on both sides to isolate "y"
y-1+1=2x+4+1
y=2x+4
So the slope is 2
Hope this helps!! :)
Please let me know if you have any questions
help me with this problem please
Brainliest and 15 points
The work of a student to solve a set of equations is shown below:
Equation 1: x + 2y = 10
Equation 2: 2x + 5y = 15
Step 1: −2(x + 2y) = −2(10)
2x + 5y = 15
Step 2: −2x − 4y = −10
2x + 5y = 15
Step 3: 1y = 5
Step 4: x + 2(1) = 10
Step 5: x = 8
In which step did the student first make an error?
Step 1
Step 2
Step 3
Step 4
Answer:
Step 2 has error and step 4 has error.
Step-by-step explanation:
Here we can see that elimination method is applied to solve the system of equations for which -2 is multiplied both sides of equation first
-2(x+2y)=-2(10 which is correct
but in step 2
left side is -2x-4y and the right side is -10 which has to be -20 which makes this step wrong and this is the error made by student.
in Step 4 also ,value of the y has to be 5 but student plugged y =1 which is also error by student.
Correct solution is
-2x-4y= -20
2x+ 5y= 15
on adding ,we get
y = -5
plugging y =5 in equation x+2y= 10 ,we get x+2(-5) =10 ,we get x = 20
therefore (20,-5) is the solution
Answer:
step 2
Step-by-step explanation:
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LP is a radius of the circle. Is KL tangent to the circle? Note the figure may not be drawn to scale.
12-ounce can of cola for 60 cent
Answer:
1/5
Step-by-step explanation:
What's the question being asked here?
Have an amazing day :)
-yO mAmA
Write an
equation in slope-intercept form of the line that
passes through the given points: (-2, 4) & (3,-1).
Step-by-step explanation:
So our m = (4+1)/(3+2) = 1
4 = -2 + b
b = 6
y = x + 6
2) 4x - y = 7
-4x + y = -7
I need helpppp
Answer:
(0,-7)
Step-by-step explanation:
4x - y = 7
-y = -4x + 7
y = 4x - 7
-4x + (4x - 7) = -7
-4x + 4x - 7 = -7
x = 0
4(0) - y = 7
-y = 7
y = -7
Can some on please explain
Answer:
ORange =1 -2
Step-by-step explanation:
Step-by-step explanation:
From the given figure , we can see that there are two angles whose measures are x and 2x - 30°. If we notice they are the angles on the same segment . ( Draw a line through the end points of the two lines , and they will be on the same chord) . And we know that angles of the same segment are equal . Therefore ,
[tex]\tt\to x = 2x - 30^o \\\\\tt\to 2x - x = 30^o \\\\\tt\to\boxed{\orange{\tt x = 30^o }}[/tex]
This is our required answer.
Write an equation for each problem. Then solve.
Round to the nearest tenth if necessary.
What percent of 90 is 126?
Answer: 71.43 i think
Step-by-step explanation:
What is the surface area of the solid?
Answer:
120
Step-by-step explanation:
An angle measure 8 less than the measure of its supplementary angle what is the measure of each angle
Answer:
94° and 86°
Step-by-step explanation:
'x-8' = smaller angle
'x' = larger angle
x - 8 + x = 180
2x = 188
x = 94
94 - 8 = 86
PLEASE HELP I NEED QUALITY ANSWERS AS WELL WILL MARK BRAINLIEST!!!
True or False: The area of a circle with diameter d = 2r = 10 is greater than the area of an ellipse with major axis 2a = 10. Explain your answer. Note: the area of an ellipse is calculated with the formula = (with ‘a’ the length of the semi-major axis and ‘b’ the length of the semiminor axis). Explain why as well.
Answer:
True
Step-by-step explanation:
So the radius would be 5 (as you times it by 2 to get 10)
Therefore
2a=10 is the same as what the circle with diameter d=2r=10
If 15% of a number is 30 and 40% of the same number is 80, find 25% of that number.
Answer:
50
Step-by-step explanation:
let the number be x
15% of x= 0.15x
0.15x=30
(divide both sides by 0.15)
x= 200
25% of 200 = 25/100 *200
= 50
What is an approximate average rate of change of the graph from x = 2 to x = 5, and what does this rate represent? (4 points)
Answer:
12
Step-by-step explanation:
About 80% of the precipitation that enters Crater Lake falls directly on the surface of the lake. Write this percent as a decimal.
80% =
Answer: 0.80
Step-by-step explanation:
Given
80% of the precipitation falls on the lake surface
The percentage can be written as
[tex]x\%=\dfrac{x}{100}[/tex]
[tex]\therefore 80\%=\dfrac{80}{100}=0.80[/tex]
Miranda and Cyndi start hiking from the same point. Miranda hikes at a heading of 270° or due west, and Cyndi hikes at a heading of 30°. or
N 30°E. If they both hike 4 miles/hour, approximately how far apart are they after one hour?
N
Cyndi
?
4 miles
120
WE
>E
Miranda 4 miles
S
ОА
4.3 miles
OB. .
6.9 miles
OC. 8.0 miles
OD 5.7 miles
Answer:
6.9 Miles
Step-by-step explanation:
I took the test and got it right,
They are both 6.9 miles apart after one hour if they both hike 4 miles/hour option (B) 6.9 miles is correct.
What is the triangle?In terms of geometry, the triangle is a three-sided polygon with three edges and three vertices. The triangle's interior angles add up to 180°.
The question is incomplete.
The complete question is in the picture, please refer to the attached picture.
We have:
Miranda and Cyndi start hiking from the same point. Miranda hikes at a heading of 270° or due west, and Cyndi hikes at a heading of 30°
From the isosceles triangle:
h = 4sin30
h = 4(1/2)
h = 2 miles
From Pythagoras theorem:
x² = 4² - h² = 4² - 2²
x = √12
x = 3.46 miles
Total distance = 2×3.46 = 6.9 miles
Thus, they are both 6.9 miles apart after one hour if they both hike 4 miles/hour option (B) 6.9 miles is correct.
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