Olivia wants to know the proportion of students at her school who use a
certain social media app. She interviews a random sample of students at
her school. She finds that 30% of the students in the sample use the app.
What conclusion can she draw from the sample?
А
It is likely that about 30% of the students at her school use the app.
B Exactly 30% of the students at her school use the app.
Every random sample would find that 30% of the students use
the app
It is likely that 30% of the students at her school were selected for
the sample.
Answer:
A
Step-by-step explanation:
Random sampling is a sampling method where each sample has an equal chance of being chosen. The random sample chosen is meant to be an unbiased representation of the population.
If 30% of the sample uses the app, it means that 30% of the population are likely to use the app
find ordered pairs: choose two of the answers below
y=2/3x+5
thank you v much//.
a.(-5,-10)
b.(-3,3)
c.(6,9)
d.(2,8)
Answer:
b -3,3 c 6,9 hope this helps
Which equation could be used for the situation below?
Jenna earns $8 each week by completing chores. She already has $12 in her savings. How much will she have after 4 weeks?
y = 8x + 4
y = 8x
y = 8x + 12
Answer:
Option C is the correct answer.
Step-by-step explanation:
Per week earning = $8
Amount in savings = $12
y = Total amount
x = Number of weeks
y = 8x + 12
Where we can put x=4 to calculate earning of 4 weeks.
y = 8(4) + 12
y = 32 + 12 = $44
Therefore,
Option C is the correct answer.
Parker's dog will be having four puppies. Parker performs a
simulation by tossing a coin to model whether these
puppies will be male or female.
• Let heads (H) = female puppy
• Let tails (T) = male puppy
Answer:
7/10 70%
Step-by-step explanation:
based on the coin flips, 7 out of 10 of the results have at least 2 female puppies. I hope this is correct :)
Answer: A
Step-by-step explanation: took the quiz and got it right
Can anyone give me the awnser?
Answer:
Step-by-step explanation:
You want to reverse the algebra and solve for y. First you want to subtract the 'a' to both sides.
x - a = -2by^2
Divide by -1 on both sides
-x + a = 2by^2
Divide by 2b on both sides
(-x + a)/2b = y^2
Take the square root of both sides
[tex]\sqrt{(-x+a)/2b}=y[/tex]
Which picture shows a rotation of the flag?
Answer:
it has no pic
Step-by-step explanation:
please helpp pleasee!!!
Answer:
The second choice. Because the x-coordinate in the second choice is constant unlike the others, which is a property of a function.
$2500, 4.5%, 2 years
Answer:
si=part
=2500×0.045×2
=225...
the answer is C
A dog barks 30 times in 2 minutes. How many times does the dog bark per minute?
barks per minute
Answer:
15 times per minute
Step-by-step explanation:
just divide 30 by 2
I’m still getting this thing up to 100%. NO MATTER WHAT THE COST IS.
Answer:
8 is the answer.
Step-by-step explanation:
Think of 7 positive things and 8 negative things.
O O O O O O O
P P P P P P P P
7 of the positive things will cancel out 7 of the 8 negative things, leaving behind 1 negative things.
#teamtrees #WAP (Water And Plant)
Rewrite the fraction in the sentence below as a percentage.
19
At a certain wedding,
of the guests were under 65 years old.
20
Answer: 95%
Step-by-step explanation:
19/20 divide
=0.95 turn into fraction form
= 95/100
=95%
ik you want the points
plzz
Answer:
Line 1: Undefined
Line 2: -4/3
Line 3: 4/3
Line 4: Undefined
Line 5: 7/3
Line 6: -7/3
Line 7: 0
Line 8: 0
Line 9: Undefined
Line 11: 0
Line 10 & 12: Undefined
Step-by-step explanation:
Use the slope formula (you can just search up the slope formula)
Also, always remember that a vertical line's slope will be undefined and a horizontal line's slope will be 0 (zero).
I hope this helps!
Find the least common denominator of the fractions. 4/7 and 2/3 A. 21 B. 7 C. 3 D. 10
Answer:
4/7 has least common denominator
= 0.5( approx.)
Answer:
21 is the answers for the question
Step-by-step explanation:
please mark me as brainlest
hi can you explain base numbers?
A number base is the number of digits or combination of digits that a system of counting uses to represent numbers. A base can be any whole number greater than 0. The most commonly used number system is the decimal system, commonly known as base 10. ... Binary is the most commonly used non-base 10 system.
Step-by-step explanation:
hope it helps ☺️
The graph of a linear system is shown. What is the solution to this linear system? Enter a value in each box to create an ordered pair.
Answer:
(1,2)
Step-by-step explanation:
The solution would be where both lines intersect.
In this case, the intersected point is (1,2)
if x^3 = 125 what does x equal?
and 3 other questions use >,<, or = to complete the next 3 problems
Step-by-step explanation:
5×5×5=125
so 7. x=5
8. =
9. >
10. <
Answer:
x^3 = 125
x = 5
Step-by-step explanation:
8) =
9) >
10) <
Neeeeddddd helllppp nowwwwww!!!!
Answer:
the area is 670.32 but it's not in there
3x^(2)+5x-2=0
solve step by step using quadratic formula.
Answer:
x=1/3,-2
Step-by-step explanation:
help i am almost done
Sid made 60% of the free throws that he attempted. If he attempted 40 free throws at basketball practice, how many did he make?
Answer:
iON know
Step-by-step explanation:
find the cube root of 27a
Answer:
3a
Step-by-step explanation:
27a ÷ 3 (number of cube root) = 3a
Answer:
3 a
Step-by-step explanation:
is the right answer you welcome
a number, X, rounded to 1 significant figure is 40. Write the error interval for x
Answer:
40
Step-by-step explanation:
Dennis recently purchased an old car for $1000, and he knows that each year, the car’s value will increase by 2% each year. What is the value of the car after 20 years?
Lupita bought 7 pounds of pretzels at a local wholesaler for $16.80. Her friend Charles bought 5 pounds of pretzels at the supermarket for $12.75. Charles thinks he got the better deal because $12.75 is less than $16.80. Is Charles’s reasoning correct? Explain why or why not.
Answer:
Charles's reasoning is wrong.
Step-by-step explanation:
Lupita has 7 pounds for 16.8 and Charles has 5 pounds for 16.8.
Let's set up ratios.
So Lupita got the best deal, not Charles. Poor him.
George spent 1 ½ hours studying on Monday, and 1 ⅔ hours studying on Tuesday. If he spent ¼ of the total time studying math, what fraction of an hour did George spend studying math?
Find the measure of each angle
Answer: x=36°
Step-by-step explanation:
The four interior angles of a quadrilateral always equal 360°, so:
(x+16)+(4x-8)+(4x-8)+x=360
Combine like terms:
360=10x+0
360=10x
36=x
Answer:
In image below
Step-by-step explanation:
Solve the simultaneous equations
y = 4x + 1
y = 2x^2+ 7x - 1
Answer:
[tex]Given,\\y = 4x+1......(1)\\y = 2x^2+7x-1.............(2)\\Equating~equation (1)~and~(2),\\4x+1 = 2x^{2} +7x-1\\or, 2x^{2}+7x-4x-1-1=0\\or, 2x^{2} + 3x-2=0\\or, 2x^{2} +4x-x-2=0\\or, 2x(x+2)-1(x+2)=0\\or, (x+2)(2x-1)=0\\i.e. x=-2 ~or~ \frac{1}{2} \\When~x=2,~equation(1)~becomes ~y=4(-2) +1=-7\\When~x=-\frac{1}{2},~equation (1)~becomes~y=4(\frac{1}{2}) +1 = 2+1=3[/tex]
So, the required values of x are -2 and 1/2 and that of y are -7 and 3.
What is 5+2 x 1-3+8 and 2+5 x 1
Answer:
Step-by-step explanation:
1) 5+2*1-3+8 = 5+2-3+8 = 7-3+8 = 4+8 = 12
2) 2+5*1 = 2+5 = 7
Answer:
a) 5+2 x 1-3+8
5+2-3+8
=12
b) 2+5 x 1
2+5
=7
Step-by-step explanation:
Is it possible for the measure of an exterior angle of a triangle to be equal to the measure of a remote interior angle? Explain
Answer:
The measure of an exterior angle of a triangle is equal to the sum of the measures of the two non-adjacent interior angles. (Non-adjacent interior angles may also be referred to as remote interior angles.) FACTS: An exterior ∠ is equal to the addition of the two Δ angles not right next to it.
Solve
x2 + 2x – 15 = 0
Answer:
x = - 5, x = 3
Step-by-step explanation:
Given
x² + 2x - 15 = 0
Consider the factors of the constant term (- 15) which sum to give the coefficient of the x- term (+ 2)
The factors are + 5 and - 3 , since
5 × - 3 = - 15 and 5 - 3 = + 2, so
x² + 2x - 15 = 0
(x + 5)(x - 3) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 5 = 0 ⇒ x = - 5
x - 3 = 0 ⇒ x = 3
