Answer:
90:60
Step-by-step explanation:
3x30= 90
2x30= 60
Use a proportion to estimate each population. (Please solve both questions, thank you) (I’ll reward you with brainliest :)
20.
total counted: 102
tagged counted: 38
total tagged: 56
21.
total counted: 958
tagged counted: 210
total tagged: 305
Answer:
Step-by-step explanation:
Step 1. (The capture) Capture a sample total counted =958, and them back tagged counted=38,total tagged=56
The idea is to estimate the proportion p = m/N of tagged =102.
Step 2. (The recapture) After everything has settled down, capture a new sample of n fish. Count the number of tagged fish. Suppose that k of them are tagged.
It is reasonable that, k/n would be a good estimante for p = m/N.
Accordingly, for an estimate N of N, se solve the equation m/N= k/n.
2x + 2 = -14
What’s the value of x
Answer:
x=-8
Step-by-step explanation:
2x+2=-14
2x=-16
x=-8
Answer: x = -8
Step-by-step explanation:
Help me please an thanks
Answer:
4.6
Step-by-step explanation:
2^2+x^2=5^2
4+x^2=25
x^2=25-4
x^2=21
x=square root 21
x=4.58=4.6
Erik transformed the equation y = 2(x − 2)2 + 5 from vertex form to standard form. His steps are shown below. Is Erik's work correct? If not, identify and correct his error.
y = 2(x − 2)2 + 5
y = 2(x2 − 4x + 4) + 5
y = 2x2 − 8x + 8 + 5
y = 2x2 − 8x + 13
answer choices
No. The error is in the second line: the expanded form of (x − 2)2 is x2 − 4.
No. The error is in the third line: the product of 2 and x2 − 4x + 4 is 2x2 − 4x + 4.
No. The error is in the fourth line: the sum of 8 and 5 is 12.
Yes. Erik is correct in his transformation from vertex form to standard form.
8. Does the equation show a proportional relationship?
y = x + 9
O Yes
O No
6,10,14 ... Find the 30th term.
Answer:
a₃₀ = 120Step-by-step explanation:
[tex]a_n=a_1+d(n-1)\\\\\\10-6=4 \ \ and\ \ 14-10=4\quad\implies\qquad d=4\\\\a_1=6\\\\\\a_{30}=6+4(30-1)=122[/tex]
Can someone please help me with this math problem:):)
Answer:
i dont understand
Step-by-step explanation:
Jackie weeded the neighbors' gardens all summer. The 6 neighbors paid:
$4.00 $6.00 $6.00 $5.00$ 8.00 7.00
What was the mean amount paid?
Answer:
7.2
Step-by-step explanation:
(4+6+6+5+8+7)/6=
=7.2$
Which number is located between 19 and 20 on a number line?
A. √298
B. √340
C.√ 391
D. √ 402
Answer:
C. 391
Step-by-step explanation:
The number located between 19 and 20 is, C.√ 391
What are surds and indices?We know there are two types of radicals one is surds when the number has been raised by such power that it is greater than zero and less than one,
The other type of radicals are indices where a number is raised to such power that is greater than one.
We know, √400 is 20.
Given, We have to find an irrational number between 19 and 20.
Now, From the given options the closest number to √400 is √402 but it is not between 19 and 20.
Therefore, The number whose square root is between 19 and 20 is,
√ 391.
learn more about surds and indices here :
https://brainly.com/question/1369233
#SPJ3
Pat is three times as old as she was 14 years ago. In seven years, she will be four times as old as she was 14 years ago. How old is she now?
I have 0.0254 it and they say approximately to 2 decimal place will I include the 0 after the decimal point
Yes. You have to include 0.
If we round off this value to 2 decimal places then it is
0.03
Reason: after decimal point or before decimal point if you have to drop some digits and if the digit to be droped are 5 followed by non zero digit then previous digit is increased by 1.
Here, the digits to be droped are 5 and 4 after 0.02 so we increase 2 by 1 that is 3.
The density of water is 1000 kilograms per cubic meter, and the density of ice is about 916 kilograms per cubic meter. If 575 kilograms of water and 275 kilograms of ice is combined in a container, about how much volume would the mixture take up?
A)5.0 m^3
B)2.3 m^3
C)0.9 m^3
D)0.4 m^3
Answer:
Step-by-step explanation:
Its c
How would I solve 8n-5=139?
Answer:
18
Step-by-step explanation:
8n=144
divide the both side of the equation by 8
and you will get
n=18
Answer:
8n-5=139
Add 5 to each side.
8n=144
Divide each side by 8.
n=18
Taylah buys clothes from a supplier in the USA. The total cost of the clothes is $250 US dollars. Shipping the clothes costs an extra $30 US dollars.On arrival in Canadian customs add an extra 10% GST to the cost of the clothes. Calculate how much Taylah has to pay in total.
If u know the answer plz answer if u don't know the answer,don't answer! -Warning
Expresa en unidades las siguientes cantidades: cinco decenas cuarenta decenas de mil siete centenas de mil veintitrés unidades de mil ayúdenme plis :3
Plz help me it’s my last question giving brainliest
Answer:
1) A
This is your last one?
Hope this Helps!Hope this Helps!:)Miss Gonzales opened an account with a deposit of $2,000,
The account earned annual simple interest.
She did not make any additional deposits or withdrawals.
At the end of 6 years, the balance of the account was $2,696.
What is the annual interest rate on this account?
Answer:
i think its 18%
PLEASE HELP!!! I WILL GIVE 30 POINTS!
Write a verbal statement that represents the expression h ÷ 8.
My teacher told me to write out the words for the symbols and numbers.
Please help.
Answer:
If I have "h" amount of cookies and I have 8 friends with me, How much would each friend get?
Step-by-step explanation:
The scatter plot shows the number of hours worked and money soent on etnertainment by each of 25 students . Also shown is tbe ljne of best fit for the data fill in the blanks below
Answer:
Follows are the responses to the given question:
Step-by-step explanation:
Please find the attached file for the complete question:
For point A:
The amount of money being spent appears to rise for those 25 students as the number of hours increases. This is evident from the plot of scattering as well as the best line.
For point B:
Its number of hours spent as well as the amount of money spent were also positive for such 25 students.
For point C:
Also with a line that fits best, we will indeed predict that only an 8-hour student would spend about $22.
All these are seen in a direct line drawn from the x-axis where x=8 fits this same best line and a horizontal line is drawn between that axis and the Y-axis is drawn.
Please explain and answer quickly, links will be reported
Answer:
Adults = 325
Students = 612
Step-by-step explanation:
2(325) + 0.75(612) = $1,109
612 + 325 = 937
. 3m = 16.8. what does m equal to?
Answer:
m = 56
Step-by-step explanation:
.3m = 16.8
3m = 168
m = 168/3
m = 56
Which expressions are equivalent to 4/7x + 4?
A. 1 + 3/7x +3
B. 5/7x - 1/7x + 4
C. 3/7x + 4 1/7x
D. 1 + 4/7x + 3
E. 1 + x/7 + 3
F. 3/7x + 4 4/7x - 1
Answer:
4+28x
_____
7x
i think...
You invest $500 in an account that pays 6% interest compounded continuously. How
much will be in the account after 6 years?
=====================================================
Explanation:
We'll apply this formula
A = P*e^(r*t)
where,
A = account balance after t yearsP = initial deposit, aka principale = special constant roughly equal to 2.718 but it goes on forever without a pattern; it's better to let the calculator handle this value rather than type the decimal digits in.r = annual interest rate in decimal formt = number of yearsIn this case, we have
P = 500r = 0.06t = 6Again we won't type "2.718..." for 'e', and we'll just type it into the calculator as shown below. That way the calculator can handle the digits instead.
So...
A = P*e^(r*t)
A = 500*e^(0.06*6)
A = 716.66470728026
A = 716.66 dollars is the final answer
6 x 10 5 is how many times the value of 3 x 10 (Hint: Write your answer in standard form.)
Answer:
0.000036
Explanation:
When multiplying a number by 10 to the power of a positive exponent (e.g.
10
3
), move the decimal in the number that many spaces to the right (e.g.
4.5
⋅
10
3
=
4500
).
When multiplying a number by 10 to the power of a negative exponent (e.g.
10
−
4
), move the decimal in the number (the absolute value of) that many spaces to the left (e.g.
4.5
⋅
10
−
4
=
0.00045
).
For
3.6
⋅
10
−
5
, move the decimal five spaces to the left:
0.000036
Step-by-step explanation:
What is the equation of the line that passes through the point (2,-4) and has a
slope of 2?
Answer:
y = 2x - 8
Step-by-step explanation:
Point(2 , -4) ; slope = 2
Point- slope form:
y - y1 = m(x - x1)
y - [-4] = 2(x - 2)
y + 4 = 2x - 2*2
y + 4 = 2x - 4
y= 2x - 4 - 4
y = 2x - 8
What can be concluded about the sphere? Check all that apply. The sphere has a radius of 10 cm. The diameter measure is substituted into the formula to find the volume. The radius is half the diameter. The formula to apply is V = four-thirds B h The volume of the sphere is two-thirds the volume of a cylinder with the same radius and height.
Answer: Its C and E on engenuity
Step-by-step explanation:
The radius is half the diameter.
The volume of the sphere is two-thirds the volume of a cylinder with the same radius and height.
Answer: C, E
Step-by-step explanation: Got it right on edge
The length of Side C D is 11 inches and the length of Side C F is 11 StartRoot 3 EndRoot inches. What is the length of Side D F? Round to the nearest tenth.
11 inches
15.6 inches
19.1 inches
22 inches
Answer:
b
Step-by-step explanation:
The diameter of a hula hoop is 36 inches. Find the area enclosed by the hoop in sq. inches.
PLS HELPP!! thank you
Answer:
$20.71/[tex]ft^{2}[/tex]
Step-by-step explanation:
290 ÷ 14 = 20.71 (rounded)
Which is greater, 4 miles or 7,000 yards ? How much greater? Explain.
Answer:
4 miles is greater.
Step-by-step explanation:
When we convert 4 miles to yards, we get 7,040. Therefore, when we look at the amount, we can see that 7,040 is greater than 7,000.