Answer:
C) The bars weigh 2.8oz on average.
Step-by-step explanation:
The fact that each sample's mean weight was within the 95% confidence interval suggests that the true mean weight of the chocolate bars is likely to be around 2.8 oz. The 95% confidence interval means that, in theory, if we repeated this sampling process many times, we would expect the true mean weight of the chocolate bars to fall within this interval 95% of the time. Since each sample's mean weight falls within this interval, it is reasonable to conclude that the company's claim that the bars weigh 2.8 oz on average is likely to be true.
The length of a rectangle is twice it width. The perimeter of the rectangle is 36cm. Calculate the area of the circle.
Answer:
72cm^2
Step-By-Step Explanation
36=2(y+2y)
36=2(3y)
36=6y
y=6cm
Width of rectangle= 6cm
Length of rectangle= 2y=2×6 = 12
Area of rectangle= L×W = 12×6 =72cm^2
In right triangle ABC, ∠C is a right angle, m∠A=52∘, AC=10.01, and AB=c.
sin52∘≈0.788
cos52∘≈0.616
tan52∘≈1.280
What is the measurement of AB?
In right triangle GHI, ∠H is a right angle, m∠I=42∘, and GH=11.
sin42∘≈0.67
cos42∘≈0.74
tan42∘≈0.90
What is the measurement of HI?
9514 1404 393
Answer:
AB = 16.25HI = 12.22Step-by-step explanation:
The mnemonic SOH CAH TOA reminds you of the relevant relationships.
__
1. Cos = Adjacent/Hypotenuse
cos(52°) = AC/AB
AB = AC/cos(52°) = 10.01/0.616
AB = 16.25
__
2. Tan = Opposite/Adjacent
tan(42°) = GH/HI = 11/HI
HI = 11/tan(42°) = 11/0.90
HI ≈ 12.22
Please answer this !
Answer:
50
Step-by-step explanation:
Using the experimental probability, first we have to find total amount paint then to find the amount of good quality forever paint we have to subtract the amounts of other paints from total amount.
Let x represents the amount of good quality forever paint sold.
Total amount of paint [tex]=48+45+35+39+33+x=200+x[/tex] ...(i)
Experimental probability of paint sold will be better quality durable paint is
[tex]P=\dfrac{\text{Amount of better quality durable paint}}{\text{Amount of total paint}}[/tex]
[tex]P=\dfrac{45}{\text{Amount of total paint}}[/tex]
It is given that experimental probability of paint sold will be better quality durable paint is [tex]\frac{9}{50}.[/tex]
[tex]\frac{9}{50}=\dfrac{45}{\text{Amount of total paint}}[/tex]
[tex]\text{Amount of total paint}=\dfrac{45\times 50}{9}[/tex]
[tex]\text{Amount of total paint}=250[/tex] ...(ii)
From (i) and (ii), we get
[tex]200+x=250[/tex]
[tex]x=250-200[/tex]
[tex]x=50[/tex]
Therefore, 50 gallons good quality forever paint is sold.
Which proportion can be used to find the value of y?
OS =
○ = 1
12
=
10 = 1
12
Answer: [tex]\dfrac{4}{8}=\dfrac{y}{14}[/tex]
Step-by-step explanation:
in the given figure, we can observe that both triangles are similar since they have two equal angles of 100° and 60° .[By AA similarity criteria]
Also, the corresponding sides of similar triangles are proportional.
As side with measure 8 in bigger triangle corresponds side with measure 4 on the smaller triangle. [shortest side]
Similarly, side with measure 14 in bigger triangle corresponds side with measure y on the smaller triangle. [longest side]
Using proportionality, we have
[tex]\dfrac{4}{8}=\dfrac{y}{14}[/tex]
Hence, the proportion can be used to find the value of y is [tex]\dfrac{4}{8}=\dfrac{y}{14}[/tex].
According to AA similarity criterion-, if any two angles of one triangle are equal to any two angles of the other, then the two triangles will be similar.hi whats the answer for this
Answer:
a) square pyramid
b)sphere
c)cube
d) pyramid
Step-by-step explanation:
Answer:
Step-by-step explanation:
A: square based pyramid
B: sphere
C: Cube
D: Tetrahedron
Find the value of y.
m∠1 = 2y + 8
Answer:
HERE IS YOUR ANSWER.
HOPE IT HELPS.
Which graph corresponds to y=1/2|x+2/3|+7
Answer:
Graph the absolute value using the vertex and a few selected points.
x y
-2 7.67
-1 7.17
0 [x+2 over 3] + 14
2
1 7.83
2 8.33
hopes this helps :)
If f(x)= 3x² – 2, find (-3)*f(x)
Answer:
-9x^2 +6
Step-by-step explanation:
f(x)= 3x² – 2
-3 f(x) = -3 * (3x² – 2)
Distribute
= -9x^2 +6
Check all of the ordered pairs that satisfy the equation below.
y= 6x
F.
Step-by-step explanation:
sorry i gusstn guesst it
Please help meeeeeeee
Answer:
the answer is Cccccccc
Answer: the answer is C
Step-by-step explanation:
Answer this question - Easy Question, Easy Points
Explanation please
Answer:
21
Step-by-step explanation:
Answer:
the answer is 21
Step-by-step explanation:
f(x)=-3(x-3)6(1/2)+6
Answer:
y=((−3(x−3))(6))( 1/2)+6
Step-by-step explanation:
4. A picnic table is 9 feet long and 3 feet
wide. Write and solve an equation to find
the area of the rectangular surface of
the table.
Answer:
Step-by-step explanation:
Area = L * B = 9 * 3 = 27 square feet
can 20 degrees 60 degrees and 100 degrees be a triangle
Answer: Yes
Step-by-step explanation: The area of a triangle equals 180°
100+60+20=180
Answer: Yes
Explanation: The sum of the measures of the angles is always 180°
This idea is known as the (Triangle Sum Theorem).
Since 20 + 60 + 100 is equal to 180, we know
that these measures can form a triangle.
PLS I NEED HELP...THE PICTURES ARE IN ORDER (13 POINTS ) Question 1 Solve the following equation. Explain or show your reasoning. ---------------------------------------------------------------------------------------- Question 2 Solve the following equation. Explain or show your reasoning. ------------------------------------------------------------------------------------------ Clare was solving an equation, but when she checked her answer she saw her solution was incorrect. She knows she made a mistake, but she can’t find it. Where is Clare's mistake and what is the solution to the equation?
Answer:
1 . x = 9,
2 . n = 4,
3 . Clare made an error in the 2nd step; Correct answer is y = - 65 / 11
Step-by-step explanation:
1 .
[tex]2 * ( x + 5 ) = 3x + 1 - Apply Distributive Property,\\\\2x + 10 = 3x + 1 - Subtract 2x from Either Side,\\10 = x + 1 - Subtract 1 from Either Side,\\\\x = 9,\\Conclusion; x = 9[/tex]
2 .
[tex]3 * ( n + 2 ) = 9 * ( 6 - n ) - Apply Distributive Property,\\\\3n + 6 = 54 - 9n - Add ( 9n ) on Either Side,\\12n + 6 = 54 - Subtract 6 from Either Side,\\\\12n = 48 - Divide Either Side by 12,\\n = 4,\\\\Conclusion; n = 4[/tex]
3 . Clare made an error in the second step ( 72 + 24y = 4y - 5 - 9y ) and to derive the correct solution, see the following steps below;
[tex]12 * ( 5 + 2y ) = 4y - ( 5 - 9y ),\\60 + 24y = 4y - 5 + 9y,\\65 + 24y = 4y + 9y,\\65 + 24y = 13y,\\\\65 = - 11y,\\y = - 65 / 11\\\\Conclusion; y = - 65 / 11[/tex]
What must be the factor of the polynomial function f(x) graphed on the coordinate plane below?
Answer:
D x+6 is the correct answer
BRAINLIEST round to one decimal place
Answer:
6 or 5.8 without rounding
Step-by-step explanation:
The other side of the triangle is 5.8 and they are the same length so Ab would be the same length as AC.
5.8 rounded is ^ because 8 is above the number 5 and not below the number 4 so you round up and doesnt stay the same
Hope this helps :3
Answer:
The answer is 5.4
Step-by-step explanation:
if you divide 5.8 by 3 you would get 1.9333 then you would multiply that by 2.8 to get 5.41
PLLZZZZZZZ HELP I WILLL GIVE BRAINLIEST TO THE FIRST ONE TO ANSWER
Answer:
5 is the highest/greatest common factor
Step-by-step explanation:
For this, we'll factor it out:
=> 10a-25+5b
Taking 5 common
=> 5(2a-5+b)
Since All are divisible by 5, So 5 is the highest common factor.
Answer:
5
Step-by-step explanation:
1/5X-3=4 solve the equation
Answer:
x=35
Step-by-step explanation:
Add 3 to both sides
x/5 = 7
Multiply by 5
x=35
Answer:
x = 25/3 = 8.333 I got that
Step-by-step explanation:
If x^2= 12x – 7 is solved by completing the square, one of the steps in the process is
Answer:
Just pick one step below I guess...
Step-by-step explanation:
I'll just solve it because I don't know which step you're looking for.
Move everything except for the 7 to one side:
[tex]x^2-12x=-7[/tex]
Now take the square of half of the coefficient for the x and add it to both sides.
[tex]x^2-12x+36=29[/tex]
You can see that the side can now be factored.
[tex](x-6)^2=29[/tex]
[tex]x-6=\sqrt{29}[/tex]
[tex]x=\sqrt{29}-6, x=-\sqrt{29} -6[/tex]
The solutions to the quadratic equation are:
[tex]x=6 -\sqrt{29}[/tex] or [tex]x=6 +\sqrt{29}[/tex]
The given equation is:
[tex]x^2=12x-7[/tex]
The equation can be re-written as:
[tex]x^2 - 12x = -7[/tex]
Add [tex]6^2[/tex] to both sides of the equation
[tex]x^2-12x+6^2=-7+6^2\\\\x^2-12x+6^2=-7+36\\\\[/tex]
The expression can be further simplified as:
[tex](x-6)^2=29[/tex]
Take the square root of both sides
[tex]x-6=\pm\sqrt{29} \\\\x=6 \pm\sqrt{29}[/tex]
The solutions to the quadratic equation are:
[tex]x=6 -\sqrt{29}[/tex] or [tex]x=6 +\sqrt{29}[/tex]
Learn more on completing the square here: https://brainly.com/question/10449635
1
For physics class, Jada wants to know how the surface of different ramps
affects the maximum speed of a marble being rolled down the ramp. To
study this, she compares the maximum speed of a marble rolled down
ramps with different surfaces. She rolls the same marble down each type
of ramp 10 times. What type of study is this? *
O Survey
Observational study
O Experimental study
Answer:
The correct option is;
Experimental study
Step-by-step explanation:
We note that an observational study is one where the person who carries out the study only puts together data or observes the effect of a factor, an intervention or a test and comes to conclusion based on what is observed without trying to control the variables while an experiment involves the application of an intervention to the group and taking down the effects.
The conditions of the study is directly under the influence of the researcher in an experiment such that the cause and effect relationship of an event can clearly be proved
Therefore, Jada is performing an experimental study.
The equation sin(25) = 9/C
can be used to find the length of
АВ what is the length of AB round to the nearest tenth
Answer:
21.3Step-by-step explanation:
The equation sin(25) = 9/C can be used to find the length of АВ means
C sin the length of side AB:
sin(25) = 9/C ⇒ C = 9÷sin(25) = 21.295814248372
→ C rounded to the nearest tenth is 21.3
The track team has a goal of running at least 21 miles per week during practice. The team meets for practice 4 days a week. Write and solve an inequality to show how many miles per practice they must run. Graph the solution. Please answer!
Answer:
5.25 miles per practice
Step-by-step explanation:
you have to divide 21 by 4 and you 5.25 you can also use a calculator to solve this problem out
six copies of the sum of nine fifths and three.
Answer:
9/5+3/1
24/5 24/5 24/5 24/5 24/5 24/5
i think copies is a multiplication and sum is to add together so
6x(9/5+3)
9/5 is 1 whole and 4/5. 1 whole plus 3 wholes is 4 Wholes so it is 4 wholes and 4/5 which is 24/5.
6x24/5 is (6x24 is 144) so its 144/5 so its 28 wholes and 4/5.
1a Find the greatest common factor ( GCF ) of 6 and 9
1b Use the greatest common factor ( GCF ) you found in 1a
to simplify the expression 6b - 9k
Answer:
the GCF is 3 so 2b - 3k
Step-by-step explanation:
Answer:
1a) the GCF of 6 and 9 is 3.
1b) -9
Step-by-step explanation:
1a) The greatest commons factor is the greatest number that divides two numbers. 3 is the largest number that goes into both 9 and 6 evenly. Therefore, 3 is the GCF.
1b) 6*3=18 and 9*3=27
18-27=-9
Is 4.32332333... a rational or irrational number?
It is an irrational number, as it is neither terminating nor non-terminating recurring.
Answer:
It is irrational
Step-by-step explanation:
It is not terminating and it doesnt repeat it self
which of the following are true statements about a 30-60-90 triangle? cheack all that apply
Answer:
C and F
Step-by-step explanation:
Using this those are the only two that make sense
Answer:
Step-by-step explanation:
Isabella solved the following equation: 4x − 2x + 8 = 6(x + 4) Step Work Justification 1 4x − 2x + 8 = 6x + 24 Distributive Property 2 2x + 8 = 6x + 24 Combine like terms 3 −4x + 8 = 24 Addition Property of Equality 4 −4x = 16 Subtraction Property of Equality 5 x = −4 Division Property of Equality Which step has an incorrect justification?
Answer:
step 3 has incorrect justification.
Step-by-step explanation:
because it was combine like terms but 8 is still in left hand side. So,combine like terms 3 has incorrect justification.
Answer:
Step 3
Step-by-step explanation: Combine like terms but 8 is still in the left side, so combine like terms 3 has incorrect justification.
A plan shows a length 3cm. If the scale is 2cm:5m-what is the actual length?
Answer:
7.5m
Step-by-step explanation:
1cm:2.5m
3cm:7.5m
Solve for x in the triangle. Round your answer to the nearest tenth.
Answer:
x = 6.9
Step-by-step explanation:
We're going to use SOH CAH TOA.
If we look at the angle (58°), and see what the relevant sides of the triangle are, we can see that the hypotenuse (our known side) is the H (hypotenuse), and the side labelled 'x' (our unknown side) is the A (adjacent).
According to SOH CAH TOA, we'll use cos (C), since we're working with the adjacent and the hypotenuse.
The equation for CAH is cos (Ф°) = A/H
In this case, Ф = 58°, A = x, and H = 13
So cos (58°) = x/13
Solve for x by multiplying both sides by 13 and using your calculator to evaluate.
13 cos (58°) = x
x = 6.88895
To the nearest tenth, x = 6.9
