Answer:
12
Step-by-step explanation:
All you need to do is add 3 4 different times it is a square they have the same number on all four sides.
(PLEASE HELP) (NO SPAM) Complete the special right tringale:
What is the length of (BD)?
What is the length of (BC)?
Answer:
Step-by-step explanation:
BD is opposite the 30° angle. The sine of 30° is 0.5. The sin of an angle in a right triangle is opposite/hypotenuse so BD = sin 30°x8.
Now you have two known lengths The third can be found by applying the Pythagorean theorem: BC²+BD²=CD², from which you can establish a numerical value for BC.
Can someone please help me?
Answer:
see below
Step-by-step explanation: 5 19 16 09
cos Θ = Adj side / hypotenuse
first we need to calculate the hypotenuse
a² + b² = c² leg1² + leg2² = hypotenuse²
6² + √7² = hypotenuse²
36 + 7 = hypotenuse²
√43 = hypotenuse
cos K = Adj side / hypotenuse
cos K = 6 / √43
cos K = (6 √43) / ((√43)(√43))
cos K = 6√43 / 43
------------------------------------------------------------
check
or tan Θ = opp /adj
K = inv tan (√7/6)
Θ = 23.795°
cos (23.795°) = 0.91499 6√43 / 43 = 0.91499
Make r the subject of x= e + r/d
Step-by-step explanation:
X=e+r/d
swap both sides
e+r/d=x
subtract e from both sides
e-e+r/d=x-e
r/d=x-e
multiply d to both sides
d×r/d=x-e×d
r=x-e×d
Hassan surveyed 120 of the students in his school about their favorite color. 114 students said their favorite color was purple. What percentage of the surveyed students said their favorite color was purple?
Answer:
95%
Step-by-step explanation:
Use the following function rule to find f(1).
f(x) = 5(8)x+ 4
f(1) =
Answer:
on the pic
Step-by-step explanation:
substitute the x with 1
Answer:
f(1)=44
Step-by-step explanation:
Wherever you see x, you will replace it with 1
so, 5(8)1+4
(40)1+4
40+4
=44
PLEASEE GIVE AN EXPLANATION TO THIS
Answer:
C.
Step-by-step explanation:
The numbers in the front will be the first number and the ones behind it will be the second number.
So the numbers are 79,82,82,83,86,90,91,93,94 and 97
Then you want to add the lowest number and the greatest number which is 79 and 97
equals to 176
Find the value of x.
43°
X
x = [?]°
3 m 3 m 3 m 3m 7 m Find the surface area of the object.
Answer:
123 m²
Step-by-step explanation:
Surface area of the object = surface area of the bigger rectangular prism + (surface area of the smaller rectangular prism - area of the smaller rectangular prism base)
Surface area of the bigger rectangular prism:
L = 7 m
W = 3 m
H = 3 m
S.A = 2(LW + WH + LH)
S.A = 2(7*3 + 3*3 + 7*3)
S.A = 102 m²
Surface area of the smaller rectangular prism:
L = 3 m
W = 3 m
H = 1 m
S.A = 2(LW + WH + LH)
S.A = 2(3*3 + 3*1 + 3*1)
S.A = 30 m²
Area of the base of the smaller rectangular prism = L*W
L = 3 m
W = 3 m
Area = 3*3 = 9 m²
Surface area of the object = 102 + (30 - 9)
= 102 + 21
= 123 m²
These dot plots show the heights (in feet) from a sample of two different types of elephants Asian Elephants . 5 10 11 12 14 15 16 17 18 19 20 Height at the shoulder ift) African Elephants Helghut the shoulder It) What are the differences between the centers and spreads of these distributions? Select two choices: one for the centers and one for the spreads. A. Spreads. The heights of the Asian elephants are more spread out ( B. Centers: The Asian elephants have a lower median height than the African elephants c. Centers. The Asian elephants have a greater median height than the African elephants 1 D. Spreads The heights of the African elephants are more spread will give brainliest just help
Answer:
B - Centers: The Asian elephants have a lower median height than the African elephants
D - Spreads: The heights of the African elephants are more spread out
Step-by-step explanation:
On analyzing the dot plots, we find that the heights of the African elephants are more spread out and the Asian elephants have a lower median height than African elephants.
What is median?
Median is a statistical measure that determines the middle value of a dataset listed in ascending order. The measure divides the lower half from the higher half of the dataset.
Median of height of Asian elephants = 8 ft
Median of height of African elephants = 11 ft
This implies that the Asian elephants have a lower median height than African elephants.
What is spread of data?Spread describes the variation of the data. One of the measures of spread is range.
Range of height of Asian elephants = 4ft
Range of height of African elephants = 10ft
This implies that the height of African elephants are more spread out.
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The Hershey Company has been receiving complaints that their chocolate almond bars contain fewer almonds than they've previously contained. Hershey's records show that over time each bar of candy contains a mean of 17 almonds. A sample of 30 of last month's chocolate bars has a mean of 14 almonds with a standard deviation of 8. Test the hypothesis (alpha
Temporary Help Answer
The answer is limited due to the lack of questions, so I'll give you some answers related.
State appropriate Hypothesis for performing a significance test. Be sure to define the parameter of interest. (u = mu)
[tex]H_{null}:u=17 \\H_{a}:u<17[/tex] Where mu = the true mean of almonds in each bar of candy.
Calculate the test statistic and the P-Value.
mu = 17
x-bar = 14
[tex]S_{x} = 8[/tex]
[tex]n = 30[/tex]
Use the T-Test (STAT) if you have a Graphing Calculator.
Interpret the P-Value in context.
Assuming the mean number of almonds in each candy bar is 17, there is a [P-Value] probability of getting a sample mean of 14 by chance alone.
What is the decision at the given significance level?
P-val of [P-Value] is (> or <?) to the alpha level [[tex]a[/tex]], so you must (fail to reject or reject?) the Null Hypothesis.
What do you conclude? (If P-val is smaller than the alpha level, reject the null hypothesis, meaning there is significant evidence.)
Because the P-Value of [P-Value] is (less/greater) than [tex]a = (?)[/tex], the observed result (is or is not?) statistically significant. There (is or is not?) significant evidence to conclude that the chocolate almond bars contain fewer almonds than they've previously contained.
Find any three rational numbers between 1/4 and 1/2
Answer:
12/40, 15/40, 18/40
Step-by-step explanation:
1/4, 1/2 = 1/4, 2/4
Since, Three rational numbers cannot come in between 1/4 and 2/4, we multiply them with 10.
∴ 1/4 × 10 = 10/40
∴ 2/4 × 10 = 20/40
∴ Three rational numbers between 10/40 and 20/40 = 12/40, 15/40, 18/40
(You can add more numbers from between 10/40 and 20/40 if you need)
Final question NO LINKS
Fake answers will be reported
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Good answers that are right and perfect will get brainly extra points five stars thanks and a blessing
This is final and FINAL.
6. 24
7. 40
8. 16
9. 10
10. 18
11. 36
12. 24
13. 22
I haven't done these kinds of problems in a while so sorry if any of them are wrong :(
Have a good day :)
n/3 = 13;n =39 how do you solve is it a solution or equation???
Answer:
n=9
Step-by-step explanation:
At the Dr. Kim's office, 4 out of
every 5 patients treated had the
flu. If Dr. Kim treated 25 patients,
how many of them had the flu?
Answer:
20 patients
Step-by-step explanation:
4/5 of 25 is 20
Consider the intersecting lines shown. Which of the following statements could you prove based on this?
A. ∠w ≅ ∠z
B. m∠x + m∠z = 180°
C. ∠x ≅ ∠z
D. m∠w + m∠y = 90°
Answer:
c
Step-by-step explanation:
trust
On a regional map, the scale shows that 2 cm on the map = 10 actual miles. The actual distance from Forest Hills to Plainville is 74 miles. How far apart are these cities on the map?
A.)5 cm
B.)7.4 cm
C.)8 cm
D).14.8 cm
Answer:
D
Step-by-step explanation:
if every 2 cm on the map=10 miles, I can use my basic knowledge to find out how many cm will equal 70, in this case I can multiply 7 on both sides to find out how many cm on the map will equal 70, so 2(7)cm=10(7)mi will result as 14cm=70mi. Even though the answer seems pretty clear I can round my answer closer to 2 or I can double check by dividing 74 by 10=7.4 times the 2 cm which gets me 14.8.
Find the error in the multiplication
Answer:
the answer is 9688
Step-by-step explanation:
this is because 346 × 28 is 9688
what is
1 1/4 + 2/14
Answer:
1.39285714286
Step-by-step explanation:
[tex]1\frac{1}{3} + 2\frac{1}{4} = \frac{3*1+1}{3} + \frac{4*2+1}{4} = \frac{4}{3} + \frac{9}{4} = \frac{4*4}{3*4} + \frac{9*3}{4*3} = \frac{16}{12} + \frac{27}{12} = \frac{16+27}{12}=\frac{23}{12} = 1\frac{11}{12}[/tex]
In ΔBCD, the measure of ∠D=90°, CB = 85, DC = 77, and BD = 36. What is the value of the cosine of ∠B to the nearest hundredth?
Answer:
cosB = 0.91
Step-by-step explanation:
Draw a picuture!
cosB = adj/hyp
cosB = DC / CB
cosB = 77 / 85
cosB = 0.91
In ΔBCD, the measure of ∠D=90°, CB = 85, DC = 77, and BD = 36. The value of the cosine of ∠B to the nearest hundredth, cos B = 0.91.
What are trigonometric identities?The trigonometric ratio can be defined in terms of ratios of perpendicular, bases, and hypotenuse.
These are defined only in right-angled triangles (triangles whose one angle is of 90 degree measure).
Trigonometric identities are the functions that include trigonometric functions such as sine, cosine, tangents, secant, and, cot.
In ΔBCD, the measure of ∠D=90°, CB = 85, DC = 77, and BD = 36.
We know that
cos B = adj/hyp
cos B = DC / CB
cos B = 77 / 85
cos B = 0.91
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A point (-20, 48 ) is on the terminal side of angle 8. Find the exact value of sin 0.
A. 5/13
B. -5/13
C. -12/13
D. 12/13
Answer:
D. 12/13
Step-by-step explanation:
Hyp = √( (-20)² + 48² )
Hyp = 52
Sin = opp/hyp
sin = 48/52 = 12/13
The value of trigonometric ratio Sinθ = 12/13.
Hence option D is correct.
According to the given point
The base of the triangle be = -20
Perpendicular of triangle = 48
We know that the Pythagoras theorem for a right-angled triangle:
(Hypotenuse)²= (Perpendicular)² + (Base)²
Therefore,
Hypotenuse = √( (-20)² + 48² )
Hypotenuse = 52
Since we know that,
Sinθ = opposite side of θ /hypotenuse
= 48/52
= 12/13
Hence,
Sinθ = 12/13
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The complete question is:
A point (-20, 48 ) is on the terminal side of angle θ .
Find the exact value of Sinθ.
A. 5/13
B. -5/13
C. -12/13
D. 12/13
Sierra walks her dog Pepper twice a day. Her evening walk is two and a half times as far as her morning walk. At the end of the week, she tells her mom, “I walked pepper for 30 miles this week! How long is her morning walk?
Answer:
(30*2)/49
Step-by-step explanation:
let her morning walk distance be x
her evening distance walk =2 1/2 x
= 5x/2
her daily walk distance =5x/2+x
= 5x/2+2x/2=7x/2
her weekly walk distace= 7x/2*7=49x/2=30miles
x= (30*2)/49
Use the parabola tool to graph the quadratic function f (x) = 2x2 - 4x + 6.
Graph the parabola by first plotting its vertex and then plotting a second point on the parabola.
The vertex of the parabola f(x) = 2x^2 - 4x + 6 is (1, 4)
How to graph the parabola?The function is given as:
f(x) = 2x^2 - 4x + 6
Differentiate the function
f'(x) = 4x - 4
Set to 0
4x -4 =0
So, we have:
4x = 4
Divide by 4
x = 1
Substitute x = 1 in f(x) = 2x^2 - 4x + 6
f(1) = 2(1)^2 - 4(1) + 6
This gives
f(1) = 4
This means that the vertex is (1, 4)
Next, we set x = 0.
So, we have:
f(0) = 2(0)^2 - 4(0) + 6
This gives
f(0) = 6
This means that the parabola passes through the point (0, 6)
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Evaluate m-+ (m + p) + 2t if m= 3,1 = 10, and p = 2.
(A) 3
(B) 48
(C) 12
(D) 6.693
Answer:
The answer is A.
Step-by-step explanation:
Put in all the numbers given to us:
m = 3
t = 10
p = 2
3-10^2/(3+2)+2*10 = 3
Harper is playing darts. She hit the bullseye on 3 out of her last 12 tosses. Considering this data, how many bullseyes would you expect Harper to get during her next 16 tosses?
Answer:
4
Step-by-step explanation:
I took the test and I got it right
Probability of Harper hitting a bullseye on any given toss is 1/4 then we would expect Harper to get 4 bullseyes during her next 16 tosses.
The probability of Harper hitting a bullseye on any given toss, based on the data provided, is:
P(bullseye) = 3/12 = 1/4
To find how many bullseyes we would expect Harper to get during her next 16 tosses, we can use the expected value formula:
Expected value = Number of trials x Probability of success
In this case, the number of trials is 16 and the probability of success (hitting a bullseye) is 1/4.
Expected value = 16 x 1/4 = 4
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Listed below are annual data for various years. The data are weights(metric tons) of imported lemons and car crash fatality rates per 100,000 population. Construct a scatterplot, find the value of the linear correlation coefficient r, and find the P-value using alpha (Ī±) =0.05 Is there sufficient evidence to conclude that there is a linear correlation between lemon imports and crash fatality rates? Select all TRUE statements for the above hypothesis test from those given below.
Lemon_Imports_(x) Crash_Fatality_Rate_(y)
230 15.8
264 15.6
359 15.5
482 15.3
531 14.9
Reqiured:
a. What are the null and alternative hypotheses?
b. Construct a scatterplot.
c. The linear correlation coefficient r is: ________
d. The test statistic t is :__________
e. The P-value is :___________
Answer:
R = - 0.9453
T = - 5.019
Pvalue = 0.212
Step-by-step explanation:
Given the data:
Lemon_Imports_(x)
230
264
359
482
531
Crash_Fatality_Rate_(y):
15.8
15.6
15.5
15.3
14.9
The Correlation Coefficient, R using a correlation Coefficient calculator is - 0.9453 ; this depicts a strong negative correlation between the dependent and independent variable.
The test statistic, T :
T = r / √(1 - r²) / (n - 2)
T = -0.9453/ √(1 - (-0.9453)²) / (5 - 2)
T = - 0.9453 / 0.1883329
T = - 5.019
The Pvalue using a Pearson Pvalue calculator ;
df = n - 1 = 5 - 2 = 3 ; r = - 0.9453
Pvalue = 0.212
Find the length of side x in simplest radical form with a rational denominator
60°
3
30
X
Answer: 5/2
Explanation:
According to 30-60-90 triangle rule:
The side opposite of 30 degree is equal to half of the hypotenuse and the hypotenuse here is 5 so therefore x = 5/2
Tan(43)=1347/x
Can someone help please
the answer is ssmsmsmsmsmememememeememekekeke
Answer:
Step-by-step explanation:
tan(43) = 1347/x
Multiply by x to bring it to the other side.
x*tan(43) = 1347
Divide by tan(43) to get x by itself.
x = 1347/tan(43)
Use the tan and cot relationship.
x = 1347 * cot(43)
Multiply.
x ≈ 1444.5
What is the slope of the following equation?
y = -5x -2
Someone help me with this pls ty :) Math. No Fake answers please!!!
Answer:
-1 , 5 for the original figure and 7, 2 for the final figure
Step-by-step explanation:
Self Explanatory
If you want explanation, comment on this answer and I will tell you
Given that ux=$6 calculate o x •round your answer to two decimal places
Answer:
[tex]\sigma_x = 0.57[/tex]
Step-by-step explanation:
Given
[tex]\mu_x = 6[/tex]
See attachment
Required
Calculate [tex]\sigma_x[/tex]
This is calculated as:
[tex]\sigma_x = \sqrt{Var(x)}[/tex]
Where
[tex]Var(x) =\sum (x - \mu_x)^2 * P(x)[/tex]
So, we have:
[tex]Var(x) =(0 - 0.4)^2 * 0.64 + (1 - 0.4)^2 * 0.32 + (2 - 0.4)^2 * 0.04[/tex]
Using a calculator
[tex]Var(x) =0.32[/tex]
[tex]\sigma_x = \sqrt{Var(x)[/tex]
[tex]\sigma_x = \sqrt{0.32[/tex]
[tex]\sigma_x = 0.57[/tex] --- approximated