https://socratic.org/questions/what-is-the-difference-between-ratios-and-rates#:~:text=Both%20rates%20and%20ratios%20are%20a%20comparison%20of%20two%20numbers.&text=The%20difference%20is%20that%20a,10%20boys%20and%205%20girls.
f(x)=x^2−10x+21 in factored form
Answer:
(x-7)(x-3)
Step-by-step explanation:
The factored form of f(x)=x^2-10x+21 is (x-7)(x-3). In order to find the factored form, you have to find what values add to -10, yet multiply to 21. So, the values that add to -10 and multiply to 21 are -7 and -3. x and x multiply to x^2.
In conclusion, the factored form of f(x)=x^2-10x+21 is (x-7)(x-3).
A 256- gallon barrel of radioactive Urikium is spilled at a factory. The entire area is evacuated. Experts say that the area can be deemed safe after only 2 gallons remain. Unfortunately, it is to toxic for any clean-up efforts, so residents will just have to wait for the Urikium to evaporate. Fortunately, Urikium has a half-life of only three hours. That means that half of the Urikium will evaporate every three hours
Answer:
21 hours
Step-by-step explanation:
Since 2^8 = 256, that means it will take 7 half-lives to become two gallons
7 half-lives * 3 hours = 21 hours
256, 128, 64, 32, 16, 8, 4, 2
Answer:
Experts say that the area can be deemed safe after only 2 gallons remain. Unfortunately, it is too toxic for any clean-up efforts. She residents will
Step-by-step explanation:
To solve half-life problems, you use the equations:
f(t) = T0 (1/2)^(t/t1/2). where T0 is the initial mass and T1/2 is the half-life.
So we get f(20)= 5 = T0•(1/2) ^ 20/11
T0 = 17.63 mg
For the second part of the question, we plug 0.5 mg into the equation:
0.5 = 17.63 • (1/2)^ t/11
t = 56.5 days
1+1=
5
2
3
1
help me plz
Answer:
2 haha
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
what is the following product? 3sqrt4 times sqrt3
Answer:
[tex]\sqrt[6]{432}[/tex]
Step-by-step explanation:
[tex]\sqrt[3]{4}\cdot\sqrt{3}=4^{\frac{1}{3}}\cdot3^\frac{1}{2}=(2^2)^\frac{1}{3}\cdot3^\frac{1}{2}=(2^\frac{4}{3})^\frac{1}{2}\cdot3^\frac{1}{2}=(2^\frac{4}{3}\cdot3)^\frac{1}{2}=(2^4\cdot27)^\frac{1}{6}=432^\frac{1}{6}=\sqrt[6]{432}[/tex]
HELP giving brainlest
Answer:
It should be "there ARE 254 counties in texas..."
Step-by-step explanation:
is the wrong one it should be are
Step-by-step explanation:
ILL MARK BRAINLIEST
What is the distance between the points (-9,4) and (3, -12)?
Answer:
-9 and 3 are x
4 and -12 are y
x are 12 points away
y is 16 points away
Is this helpful?
Answer:20
Step-by-step explanation:
Describe fully the single
transformation that takes
shape A to shape B.
Answer:
enlarge by scale factor -1/2, centre 6,5
can someone please help
find slope/rate of change
a. 1/3
b. 3
c. 30
d. 10
Answer:
3
Step-by-step explanation:
Pick two points on the line
(0,0) and (10,30)
Using the slope formula
m = (y2-y1)/(x2-x1)
= (30-0)/(10-0)
= 30/10
= 3
Please help.. not really understanding this
Answer:
(-4,5)
Step-by-step explanation:
use elimination method to solve
x+2y=6
3x+4y=32
make the x coefficient to be equal by multiplying the x by 3
3x+6y=18
-3x+4y=32
since the signs for the z coefficient are different than you add 3x+-3x=0
6y+4y=10y
18+32=50
10y=50
y=5
if y is equal to 5 then substitute
x+(2*5)=6
x+10=6
x=-4
(-4,5)
A store offers a discount of $43 when you buy a painting for $100. What is the percent discount?
PLS HELP
In ΔIJK, i = 340 cm, ∠I=120° and ∠J=59°. Find the area of ΔIJK, to the nearest 10th of a square centimeter.
The area of triangle IJK is 999.8 square centimeters
The given parameters are:
[tex]\angle I = 120^o[/tex]
[tex]\angle J = 59^o[/tex]
[tex]i = 340cm[/tex]
Start by calculating the length of side j using the following sine ratio
[tex]\frac{i}{\sin(I)} = \frac{j}{\sin(J)}[/tex]
Make j the subject of the formula
[tex]j = \sin(J) \times \frac{i}{\sin(I)}[/tex]
Substitute known values
[tex]j = \sin(59) \times \frac{340}{\sin(120)}[/tex]
Evaluate the expression
[tex]j = 337[/tex]
Next, calculate angle K using the following sum of angles formula
[tex]\angle I + \angle J + \angle K =180[/tex]
Substitute known values
[tex]120 + 59 + \angle K =180[/tex]
[tex]179 + \angle K =180[/tex]
Subtract 179 from both sides
[tex]\angle K =1[/tex]
The area of the triangle is:
[tex]Area = \frac{1}{2} ij \times \sin(K)[/tex]
So, we have:
[tex]Area = \frac{1}{2} \times 340 \times 337 \times \sin(1)[/tex]
Evaluate
[tex]Area = 999.8[/tex]
Hence, the area of triangle IJK is 999.8 square centimeters
Read more about areas at:
https://brainly.com/question/2391510
the square below is being reduced by a scale factor of one-third. what is the perimeter of the new drawing
Answer:
one side = 3cm
Step-by-step explanation:
S.f=1/3
1 side=9÷3 = 3
hey cutie pls help me !!
A circle has a radius of 8.25 feet. To the nearest square foot, what is the area of the circle?
Use the on-screen keyboard to type the correct response in the box below.
Answer: 214 ft^2
Step-by-step explanation:
A=πr^2
3.14(8.25)^2
3.14(68.0625)
213.71625
rounded to the nearest square foot: 214
which expression is equivalent to (x+2)(x+6)?
1.x^2+12x+32
2.2x^2+10x+12
3.2^2+12x+16
x^2+8x+12
PLS FAST, WILL GIVE BRANLIEST IF ANSWER
Answer:
V=πr^2h=π·8^2·6≈1206.37158
Step-by-step explanation:
pls help ill give brainlist
Answer:
2
Step-by-step explanation:
$24 equals 7 pencils, each x dollars worth, and the $10 left over: 24=7x+10.
Solve for x, 24-10=7x
14=7x
$2=x
The cost of each pencil is $2
Answer:
$2
Step-by-step explanation:
→ Work out how much she spent
24 - 10 = 14
→ Divide it by the amount of pencils
14 ÷ 7 = 2
Find S7of the sum of the geometric series.a1=−4374,a7=−6,r=1/3
Group of answer choices
A. −6568
B. −6583
C. −6563
D. −6534
Answer:
The sum of the first 7 terms in the geometric sequence is -6558
Step-by-step explanation:
s7 refers to the sum of the first 7 terms of the geometric sequence
To calculate the sum of terms, we use the sum of terms formula
We have this generally given as;
Sn = a(1-r^n)/(1-r)
a refers to the first term, given as a1 which is -4374
r is the common ratio which is 1/3
n is the number of terms, which is 7
substituting these values;
s7 = -4374(1-(1/3)^7)/(1-1/3)
s7 = -4374(1-(1/3)^7)/2/3
s7 = (3 * -4374)/2 * (1- (1/3)^7
s7 = -6561 * (1-1/2187)
s7 = -6561 * (2187-1)/2187
= -6561 * 2186/2187
= -6558
help help help pleaseee
Answer:
f is the answer
Step-by-step explanation:
pls help me plss im so STUCK AHhH
please help i’ll give brainliest
Answer:
Matter in living things may pass into nonliving things.
Step-by-step explanation:
Write the number in 2 equivalent forms as a fraction, decimal, or percent.
10/10
What is the equivalent fraction?
A sphere has a radius of 12 inches. What is its volume
Answer:
26899 in³
Step-by-step explanation:
The volume of a sphere of radius r is V = (4/3)πr³.
If the radius is 12 in, then the volume is V = (4π/3)(12 in)³, or approximately 26899 in³
Malik, who is 5 feet tall, stands 15 feet from a mirror. In the mirror, he can see the reflection of the top of a tree, which he measures to be 92 feet away from the mirror.
Answer:
Huh????
Step-by-step explanation:
i need help no links
Answer:
Hello!
Angle z = 137
Hope this helps.
Answer:
z = 90
Step-by-step explanation:
simple really this also might come in handy later.
Joey sells mangoes. Jimmy sells oranges. For every 16 mangoes Joey sells, Jimmy sells 6 oranges. How many mangoes were sold at the end of the week if Jimmy sold 144 oranges?
The answer is 384 mangoes I hope it is helpful.
Find two numbers that multiply to 16 and also add to -8
Answer:
-4,-4
Step-by-step explanation:
let the numbers be x and y.
x+y=-8
y=-x-8
xy=16
x(-x-8)=16
-x²-8x=16
x²+8x+16=0
x²+4x+4x+16=0
x(x+4)+4(x+4)=0
(x+4)(x+4)=0
x=-4,-4
Please help ASAP. No links for an answer please or I will report you'8th grade
Answer:
2.389 × 10^5
Step-by-step explanation:
the coefficient must be between 1 to 10
PLZZZ HELPPPP, How many 2 inch cubes will fit into the box below if it is filled completely full?
Answer:
30 cubes
Step-by-step explanation:
10 x 4 x 6 = 240 in³
2 x 2 x 2 = 8 in³
240/8 = 30 cubes
Answer:
I believe 240
Step-by-step explanation:
Since ur multtiplying
10 times 4 times 6 you get 240
A stew recipe calls for 3.75 pounds of meat. Jack wants to make 5 batches of stew. How many pounds of meat does he need? Show your work.
PLZ TELLL ME HOW YOU GOT THE ANSWER WITHOUT A CALCULATOR