Answer:
k = 0 or 8
Step-by-step explanation:
First, get the variables and constants on their side.
-4k^2 + 5k^2 - 8k = -3 + 3 Now simplify
k^2 - 8k = 0 Factor
k(k - 8) = 0 Solve
k = [0, 8]
If you want you can double check your answer by plugging in the values you got. First, 0.
0 - 0 - 3 = -3 - 0
-3 = -3. That works, so we know 0 is correct. Now 8
-4(64) - 8(8) - 3 = -3 - 5(64)
-256 - 64 - 3 = -3 - 320
-320 - 3 = -323
-323 = -323 That also works, so we know 8 is correct.
This angle cuts out
4
9
of the circle. Find the measure of the angle
One calculator is discounted by 30% and now costs $42
another is discounted by 25% and now costs $42 dollars as well
which calculator had the cheaper original price? How much cheaper?
Fill in the blanks for the formula used
to find the percent change between
an old value and a new value.
Old Value
New Value
Answer:
[tex]\text{\% change}=\dfrac{(\text{New value})-(\text{Old value})}{\text{Old value}}[/tex]
Step-by-step explanation:
A percentage change is quotient of the difference between the new value and old value, and the old value. That fraction is expressed as a percentage in the usual way.
__
Here, the problem statement tells you to fill in the blanks with "NOO."
[tex]\text{\% change}=\dfrac{(\textbf{N}\text{ew value})-(\textbf{O}\text{ld value})}{\textbf{O}\text{ld value}}\times100\%[/tex]
What is the answer
5 3/5 - 3 14/16
Answer:
138/80
Step-by-step explanation:
5×5+3/5-3×16+14/16
28/5-62/16
28×16/5×16-62×5/16×5
448/80-310/80
448-310/80
138/80
Volume of cones
A cone has a height of 15 meters and a diameter of 12 meters. What is its volume?
Use = 3.14 and round your answer to the nearest hundredth.
Answer:
150.72
Step-by-step explanation:
Answer:
it will 3.14.
Step-by-step explanation:
there is no number after 4
Can someone please explain 3 and 4 to me? I don’t understand how to solve them
Answer:
see explanation
Step-by-step explanation:
3) line l and m are perpendicular so they intersect at 90 degrees
I labelled the angles that are the same measure.
2x + 23 = 90 subtract 23
2x = 67 divide by 2
x = 23.5 degrees
4) 2m + 66 = 120 subtract 66
2m = 54 divide by 2
m = 27 degrees
Some of the dimensions of a square pyramid are shown in the diagram. The height of the square pyramid is 5.1 meters.
What is the volume of the square pyramid in cubic meters?
60 m3
40 m3
360 m3
120 m3
Answer:
27.2 m³
Step-by-step explanation:
Given:
Base edge = 4 mHeight = 5.1 metersFormula:
[tex](\text{Base edge})^{2} \times \dfrac{\text{Height}}{3}[/tex]
Replace the base edge and the height in the formula:
[tex]\implies (\text{4})^{2} \times \dfrac{\text{5.1}}{3}[/tex]
Evaluate the volume of the prism:
[tex]\implies (\text{4})(4) \times 1.7[/tex]
[tex]\implies 16 \times 1.7[/tex]
[tex]\implies 27.2 \ \text{m}^{3}[/tex]
Answer:
27.2 cm³
Step-by-step explanation:
Volume of a square pyramid
[tex]\sf V=\dfrac13a^2h[/tex]
where:
a is the base edgeh is the heightGiven:
a = 4 mh = 5.1 m[tex]\sf \implies Volume=\dfrac13\cdot 4^2\cdot5.1=27.2\;cm^3[/tex]
What two equivalent fractions for 8/8?
Answer:
2/2. and 4/4
Step-by-step explanation:
because 8/8 is 1 and 2/2 and 4/4 are both 1 .
do u mind giving me brainlest im trying to level up.
thank u
PLEASE HELP (easy points)
Answer:
the first one i think
Step-by-step explanation:
HELP HELPPP WITH THIS NOWW
Answer:
1. ≈301.6
2.≈10210.18
Step-by-step explanation:
1. A=2πrh+2πr2=2·π·4·8+2·π·42≈301.59289
A=2πrh+2πr2=2·π·25·40+2·π·252≈10210.17612
What life cycle adaptation allows a seahorse to make lots of babies in a short amount of time? (2 points)
a seahorse
Group of answer choices
The female hatches the eggs in the sand while the male gets rid of predators.
The female hatches the eggs in the sand while the male protects them.
The male carries the babies while the female makes more eggs.
The male makes more eggs while the female carries the babies
The seahorse make a lot of babies because the male carries the babies while the female makes more eggs.
What is mating?Mating is the process in which opposite or hermaphroditic organisms pair for reproduction.
During mating between the male and female seahorse mates, the female seahorse puts her eggs in the male pouch and the male fertilises the egg in his pouch. The eggs develop into baby seahorse in the father pouch.
Find out more on mating at: https://brainly.com/question/922533
A train traveled 1/5 of the distance between two cities and 3/4 of an hour at this rate how many hours will it take the train to travel the entire distance between these 230
Answer:
15/4 or 3 3/4
Step-by-step explanation:
since 1/5 has 1 as a numerator,
5 x 3/4=
15/4
it will take about 3 hours and 45 minutes
Using the tools from before, what is the theoretical probabilty of spinning an even number and rolling an odd number?
What is the axis of symmetry for y=8x² + 2x - 6?
What is the total amount Mrs. Harrison will pay back
Answer:
You have to give a reference or a picture or a number or something.
Step-by-step explanation:
We can't guess what the numbers are you have to state them.
Answer:
$654
No explanation! sorry!
20/3=x/6 what does X equal
Answer:
x equals 40 since 3 × 2 is 6 you do 20 × 2 which is 40
Please help this is due in the morning
Step-by-step explanation:
Using the Theorem,
LN*NL = KN*NJ
(7x-11)*14 = 16*(3x+6)
98x - 154 = 48x + 96
98x-48x = 96+154
50x = 250
x= 250/50
x= 5 MARK ME AS BRAINLISTWhich statement is the correct interepration of the inequality -3>-4?
Answer:
-3>-4 is correct
Step-by-step explanation:
Tyrone wants to know how much wrapping paper is
needed to cover a box with the dimensions shown,
1 in
6 in
1 in
3 in 1 in 11n
3 in
1 in
3 in
What is the surface area of the box?
A. 48 square inches
B. 27 square inches
O C. 18 square inches
D. 54 square inches
Please help quick! :)
Answer:18
Step-by-step explanation:
A school collects data to determine the favorite sport among seventh graders at middle school. Which sampling method produces an unbiased representative sample of the population?
Answer:
A random sample is meant to be an unbiased representation of the larger population.
A ladder 15 feet long leans against a house and makes an angle
of 60° with the ground. Find the distance from the house to the
foot of the ladder.
A 13 feet
)
B 7.5 feet
C 10 feet
D
8.2 feet
Answer:
B
Step-by-step explanation:
assume a right angle between the house and the ground.
then the ladder is the hypotenuse and distance from ladder to house is d
using the cosine ratio in the right triangle and the exact value
cos60° = [tex]\frac{1}{2}[/tex] , then
cos60° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{d}{15}[/tex] = [tex]\frac{1}{2}[/tex] ( cross- multiply )
2x = 15 ( divide both sides by 2 )
x = 7.5
distance from house to foot of ladder is 7.5 feet
A bag contains green and black counters.
1
-
4
of the counters are black
Write the ratio of green to black counters.
Answer:
3:1
Step-by-step explanation:
if 1/4 of the counters are black then it means the total counters are 4 and so there are 3 remaining and those become the green counters
The ratio of green to black counters is 3:1
What is the Ratio?The ratio is defined as the comparison of two quantities of the same units that indicates how much of one quantity is present in the other quantity.
Given that A bag contains green and black counters, 1/4 of the counters are black.
Since, 1/4 is black counters therefore, 1 - 1/4 are green counters
So, there are 3/4 green counters
Ratio = (3/4)/(1/4) = 3/1 3:1
Hence, The ratio of green to black counters is 3:1
For more references on Ratio, click;
https://brainly.com/question/13419413
#SPJ2
6-8x=7x-9x-36 i really need help
Answer:
Simplifying
6 + -8x = 7x + -9x + -36
Reorder the terms:
6 + -8x = -36 + 7x + -9x
Combine like terms: 7x + -9x = -2x
6 + -8x = -36 + -2x
Solving
6 + -8x = -36 + -2x
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '2x' to each side of the equation.
6 + -8x + 2x = -36 + -2x + 2x
Combine like terms: -8x + 2x = -6x
6 + -6x = -36 + -2x + 2x
Combine like terms: -2x + 2x = 0
6 + -6x = -36 + 0
6 + -6x = -36
Add '-6' to each side of the equation.
6 + -6 + -6x = -36 + -6
Combine like terms: 6 + -6 = 0
0 + -6x = -36 + -6
-6x = -36 + -6
Combine like terms: -36 + -6 = -42
-6x = -42
Divide each side by '-6'.
x = 7
Simplifying
x = 7
Answer:
x = 7
Hope This Helps! :) Please Give brainliest if you can!
99 like Sorbet
94 like Rocky Road and Berry
96 like Rocky Road
96 like Sorbet and Berry
99 like Berry
93 like all three
95 like Sorbet and Rocky Road
How many people prefer:
(a) none of the three?
(b) Sorbet, but not Rocky Road?
(c) Anything but Berry?
(d) only Rocky Road?
(e) Exactly two kinds of ice cream?
WILL GIVE BRAINLIEST PLLSSSS!!!!!
Answer:
b
Step-by-step explanation:
Is it possible that a packet of candies does not divide into 9 equal parts, but rather divides into 3 equal parts? Give an example with your answer.
Answer:
Yes, if there are 6 candies it can be divided equally by 3 and not 9.
Step-by-step explanation:
Find the volume of the sphere, round your answer to the nearest tenth
Answer:
904.8 units^3
Step-by-step explanation:
The formula for the area of a circle is [tex]4/3 \pi r^3[/tex]
By the picture we know r = 6
Thus our answer is 4/3 * π * [tex]6^3[/tex]
This is the same as 4/3 * 216 * π = 904.778684234
Rounding to the nearest tenth yields 904.8 units^3
12 people are waiting at a subway stop to get on the train. However, the train only has space for 9 people to board. How many different combinations of people can get on the train?
220
220
1,320
1,320
13,305,600
13,305,600
79,833,600
79,833,600
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Sam Martin makes $7 per hour and works 40 hours per week. What would be the amount of his bi-weekly gross paycheck? _______________________________
Answer:
13,440 per year.
Step-by-step explanation:
His pay check would be deducted over 93% which is 12,406 spent on bills, and about $90 left to spend on whatever he wants. (LoL)
Tuesday he used 3/5 as many of 1/8
Answer:
19/40 = 0.475 You can use either the fraction or the decimal
Step-by-step explanation:
3/5 - 1/8 = 3 · 8/5 · 8 - 1 · 5/8 · 5 = 24/40 - 5/40 = 24 - 5/40 = 19/40
Answer:
[tex] \frac{3}{5} - \frac{1}{8} = \frac{19}{40} [/tex]
TOTAL:
=0.475
Step-by-step explanation:
3/5 - 1/8 = 3.8/5.8 - 1.5/8.5 = 24/40
- 5/40 = 24-5/40 - 24-6/40 =19/40
✿For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of both denominators - LCM(5, 8) = 40. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 5 × 8 = 40. In the following intermediate step, it cannot further simplify the fraction result by canceling.
The circumference of the circle is 87.92 cm. What is the diameter? (Use 3.14 for .)
Answer: The diameter is 28cm
Step-by-step explanation:
Circumference is [tex]2\pi r[/tex] where r is the radius or just [tex]\pi d[/tex] where d is the diameter. For this, we'll use the one with the diameter.
[tex]87.92=3.14d\\\frac{87.92}{3.14} =\frac{3.14d}{3.14} \\28=d[/tex]