Answer:
5.07, 5.62, 5.8, 15.07, 15.36, 51.9
Answer:
answer is 5.7,5.8,5.62,15.07,15.36,51.9
30 points, high school geometry question.
Answer:
2.6
Step-by-step explanation:
4.6/6.8 = CD/3.8
CD = 2.6
Answer:
2.6
Step-by-step explanation:
it shoudl be 2.6 i think. since the ratios should be the same i think. so 3.8/6.8*4.6
correct me if i'm wrong please. looks like khan accademy. good luck!
1
If one serving contains 90 calories, how many calories are in 4ź servings?
O a. 202.5 calories
b. 20 calories
OC. 405 calories
O d. 810 calories
Answer:
Re-Write The Question
Step-by-step explanation:
(Unexplainable)
Sam has a collection of yellow and red cards. Yellow cards are worth 3 points and
red cards are worth 5 points. He has at most 15 cards, totaling at least 45 points.
This can be modeled by the following system.
y + r < 15
3y + 5r > 45
Graph the system. Then use the graph to determine which combination is a
solution.
1. 3 yellow and 9 red
2. 6 yellow and 4 red
3. 9 yellow and 3 red
4. 12 yellow and 8 red
Answer:1.
1. 3 yellow and 9 red
Step-by-step explanation:
r, the amount of red cards, is represented ox x-axisy, the amount of yellow cards, is represented ox y-axisIn the picture attached, the system is represented. The darker area shows all the points that are a solution to the system of inequalities.
The combinations can be rewritten as a coordinate pair, as follows:
1. 3 yellow and 9 red -> (9,3)
2. 6 yellow and 4 red -> (4,6)
3. 9 yellow and 3 red -> (3,9)
4. 12 yellow and 8 red -> (8,12)
As we can see in the picture, only the first option is a solution.
10 + 3² - 6 = 7 10 11 13
Answer:
13
Step-by-step explanation:
Evaluate 3² then add and subtract, that is
10 + 3² - 6
= 10 + 9 - 6
= 19 - 6
= 13
Can you help to solve this and explain how thanks in advance
Hey there! :)
Answer:
5.
Step-by-step explanation:
The pattern of this puzzle is to take the bottom two numbers of the triangle, find the sum, then divide by the top number. For example:
8 + 4 = 12 --> 12/3 = 4.
5 + 13 = 18 --> 18/6 = 3.
9 + 5 = 14 --> 14/2 = 7.
Therefore:
14 + 6 = 20 --> 20/4 = 5. The missing number is 5.
Answer: 5
Step-by-step explanation:
Use the indicated x-values on the graph of y = f(x) to find the following.
Find intervals over which the graph is concave down. (Consider only the interval (a,h). Enter your answer using only interval notation.)
Answer:
(a,c) ∪ (f, g)
Step-by-step explanation:
The function is:
concave down in the intervals: (a,c) and (f, g)concave up in the intervals: (c, f) and (h, g)Draw the slope of the tangent lines of several points on the curve,
if the slope increases, the segment is concave upif the slope decreases, the segment is concave down.I NEED HELP ASAP!!!! WILL MARK BRAINLIEST
Answer: 5x + 1
Step-by-step explanation:
f(x) - g(x)
(3x + 2) - (-2x + 1) Here you distribute the negative sign to (-2x + 1)
3x + 2 + 2x - 1 Here you combine like terms
5x + 1 This is the answer.
Find the volume of the prism shown. Use Cavalieri’s principle. ANSWERS: 336 cm3 2,696 cm3 1,084 cm3 164 cm3
Answer:
336 cm3
Step-by-step explanation:
Using Cavalieri’s principle, this volume is the same as for a right rectangular prism with these dimensions. Apply the formula for volume of a rectangular prism:
V = lwh
V = (6)(4)(14)
V = 336 cm3
Need help with trig problem in pic
Answer:
a) [tex]cos(\alpha)=-\frac{3}{5}\\[/tex]
b) [tex]\sin(\beta)= \frac{\sqrt{3} }{2}[/tex]
c) [tex]\frac{4+3\sqrt{3} }{10}\\[/tex]
d) [tex]\alpha\approx 53.1^o[/tex]
Step-by-step explanation:
a) The problem tells us that angle [tex]\alpha[/tex] is in the second quadrant. We know that in that quadrant the cosine is negative.
We can use the Pythagorean identity:
[tex]tan^2(\alpha)+1=sec^2(\alpha)\\(-\frac{4}{3})^2 +1=sec^2(\alpha)\\sec^2(\alpha)=\frac{16}{9} +1\\sec^2(\alpha)=\frac{25}{9} \\sec(\alpha) =+/- \frac{5}{3}\\cos(\alpha)=+/- \frac{3}{5}[/tex]
Where we have used that the secant of an angle is the reciprocal of the cos of the angle.
Since we know that the cosine must be negative because the angle is in the second quadrant, then we take the negative answer:
[tex]cos(\alpha)=-\frac{3}{5}[/tex]
b) This angle is in the first quadrant (where the sine function is positive. They give us the value of the cosine of the angle, so we can use the Pythagorean identity to find the value of the sine of that angle:
[tex]cos (\beta)=\frac{1}{2} \\\\sin^2(\beta)=1-cos^2(\beta)\\sin^2(\beta)=1-\frac{1}{4} \\\\sin^2(\beta)=\frac{3}{4} \\sin(\beta)=+/- \frac{\sqrt{3} }{2} \\sin(\beta)= \frac{\sqrt{3} }{2}[/tex]
where we took the positive value, since we know that the angle is in the first quadrant.
c) We can now find [tex]sin(\alpha -\beta)[/tex] by using the identity:
[tex]sin(\alpha -\beta)=sin(\alpha)\,cos(\beta)-cos(\alpha)\,sin(\beta)\\[/tex]
Notice that we need to find [tex]sin(\alpha)[/tex], which we do via the Pythagorean identity and knowing the value of the cosine found in part a) above:
[tex]sin(\alpha)=\sqrt{1-cos^2(\alpha)} \\sin(\alpha)=\sqrt{1-\frac{9}{25} )} \\sin(\alpha)=\sqrt{\frac{16}{25} )} \\sin(\alpha)=\frac{4}{5}[/tex]
Then:
[tex]sin(\alpha -\beta)=\frac{4}{5}\,\frac{1}{2} -(-\frac{3}{5}) \,\frac{\sqrt{3} }{2} \\sin(\alpha -\beta)=\frac{2}{5}+\frac{3\sqrt{3} }{10}=\frac{4+3\sqrt{3} }{10}[/tex]
d)
Since [tex]sin(\alpha)=\frac{4}{5}[/tex]
then [tex]\alpha=arcsin(\frac{4}{5} )\approx 53.1^o[/tex]
The trisectors of angles $B$ and $C$ of scalene triangle $ABC$ meet at points $P$ and $Q$, as shown. Angle $A$ measures 39 degrees and angle $QBP$ measures 14 degrees. What is the measure of angle $BPC$?
Answer:
BPC=52 degreees
Step-by-step explanation:
ROWAN IS CHEAT
Answer:
133 degrees
Step-by-step explanation:
I saw this answer in the comments and it is correct.
a group of 12 friends want to see a movie, only 7 seats are available for the current show, they draw straws to determine who will watch the movie and who will go to a leter show. how many different groups are posssible for the current showing of the movie? a 426 b 95,040 c 792 d 33, 264
5. Solve the inequality.
-4(3-X) > 8
a. -5
b. x < -5
c. 5< x
d. x < 5
Answer:
x >5
Step-by-step explanation:
-4(3-X) > 8
Divide by -4, remembering to flip the inequality
-4/-4(3-X) < 8/-4
3-x < -2
Subtract 3 from each side
3-x-3 < -2-3
-x <-5
Divide by -1, remembering to flip the inequality
x >5
Answer:
[tex]c.[/tex] [tex]5<x[/tex]
Step-by-step explanation:
[tex]-4(3-x)>8\\3-x>-2\\-x>-5\\x>5[/tex]
What is the solution to the equation √x^2+2x-25=√x+5 x = –6 x = 5 x = 6, x = –5 x = –6, x = 5
Answer:
x = 5, -6
Step-by-step explanation:
Step 1: Write out equation
x² + 2x - 25 = x + 5
Step 2: Move everything to one side
x² + x - 30 = 0
Step 3: Factor
(x - 5)(x + 6) = 0
Step 4: Find roots
x - 5 = 0
x = 5
x + 6 = 0
x = -6
Is the simplified form of 2 square root of 3 ⋅ square root of 12 rational? Yes or No?
Answer:
12 rational
Step-by-step explanation:
2√3×√12 =
= 2√3×√2²·3
= 2√3×2√3
= 2×2×√3×√3
= 4×3
= 12
please help i dont understand it
30 POINTS
Answer:
0.16 P(Yellow or Brown)=0.16
Answer: 0.44
Step-by-step explanation:
0.4 + 0.28 = 0.68
1.00 - 0.68 = 0.32
0.32 divided by 2.0 = 0.16
Total answer is 0.44
GLAD TO HELP:)
HAVE A NICE DAY!
BTW: I WAS DOING A TEST, BUT TOOK MY TIME TO HELP YOU! :)
PLEASE BRAINLEST ME!
Find the x-intercepts of the graph y = StartFraction 2 Over x squared EndFraction?
a.
(2, 0) and (-2,0)
c.
There are no x-intercepts
b.
(-1,0) and (1, 0)
d.
x-intercept is (3, 0)
Answer:
The answer is option c.
There are no x-intercepts
Hope this helps
the rectangle below has an area of x^2-6x-7, square meters and a width of x-7 meters.What expression represents the length of the rectangle?
Answer:
Length = (x^2-6x-7)m²/ (x-7)m
Step-by-step explanation:
let L =length
let W= width
let A = area of the rectangle.
if A = L × W
making L the subject, divide both side by W
A/W= L×W/W
therefore, L =A/W
L= (x²-6x-7)m²/(x-7)m
what is the square of 5.5?
Answer:
30.25
Step-by-step explanation:
Answer: 2.345
Step-by-step explanation:
The square root of 5.5 is 2.345.
The probability of a randomly selected adult in one country being infected with a certain virus is 0.003. In tests for the virus, blood samples
from 29 people are combined. What is the probability that the combined sample tests positive for the virus? Is it unlikely for such a combined
sample to test positive? Note that the combined sample tests positive if at least one person has the virus.
The probability that the combined sample will test positive is
(Round to three decimal places as needed.)
Answer:
The probability that the combined sample tests positive for the virus is 0.083
Since the probability that combined sample test positive for the virus is greater than 0.05, it is not likely for such a combined sample to test positive.
The probability that the combined sample will test positive is 0.083
Step-by-step explanation:
Given that:
The probability of a randomly selected adult in one country being infected with a certain virus is 0.003.
P = 0.003
number of blood sample size n = 29
The probability mass function of X is as follows;
[tex]P(X=x) = \left[\begin{array}{c}{29}&x\\\end{array}\right] (0.003)^x (1-0.003)^{29-x}[/tex]
Thus; the required probability is;
[tex]P(X \geq 1) = 1 - P ( X < 1)[/tex]
[tex]P(X \geq 1) = 1 - P ( X =0)[/tex]
[tex]P(X \geq 1) = 1 - \left[\begin{array}{c} \dfrac{29!}{0!(29-0)!} \ \ \times 0.003)^0 \times (1-0.003)^{29-0}}\end{array}\right][/tex]
[tex]P(X \geq 1) = 1 - \left[\begin{array}{c} 1 \times 1 \times ( 0.9166)\end{array}\right][/tex]
[tex]P(X \geq 1) = 1 - 0.9166[/tex]
[tex]P(X \geq 1) = 0.0834[/tex]
Therefore; the probability that the combined sample tests positive for the virus is 0.083
Is it unlikely for such a combined sample to test positive?
P(combined sample test positive for the virus ) = 0.0834
Since the probability that combined sample test positive for the virus is greater than 0.05, it is not likely for such a combined sample to test positive.
The probability of a randomly selected adult in one country being infected with a certain virus is 0.003.
P = 0.003
number of blood sample size n = 29
The probability mass function of X is as follows;
[tex]P(X=x) = \left[\begin{array}{c}{29}&x\\\end{array}\right] (0.003)^x (1-0.003)^{29-x}[/tex]
Thus; the required probability is;
[tex]P(X \geq 1) = 1 - P ( X < 1)[/tex]
[tex]P(X \geq 1) = 1 - P ( X =0)[/tex]
[tex]P(X \geq 1) = 1 - \left[\begin{array}{c} \dfrac{29!}{0!(29-0)!} \ \ \times 0.003)^0 \times (1-0.003)^{29-0}}\end{array}\right][/tex]
[tex]P(X \geq 1) = 1 - \left[\begin{array}{c} 1 \times 1 \times ( 0.9166)\end{array}\right][/tex]
[tex]P(X \geq 1) = 1 - 0.9166[/tex]
[tex]P(X \geq 1) = 0.0834[/tex]
The probability that the combined sample will test positive is 0.083
Which function represents g(x), a reflection of f(x) =
(10)^x across the x-axis?
g(x) = -2/5(10)^x
g(x) = -2/5(1/10)^x
g(x) =2/5(1/10)^-x
g(x) = 2/5(10)^-x
Answer:
Option A.
Step-by-step explanation:
Note: The given function should be [tex]f(x)=\dfrac{2}{5}(10)^x[/tex] instead of [tex]f(x)=(10)^x[/tex].
Consider the given function is
[tex]f(x)=\dfrac{2}{5}(10)^x[/tex]
We need to find the function which represents a reflection of f(x) across the x-axis.
If a function f(x) is reflected across the x-axis, then the new function is
[tex]g(x)=-f(x)[/tex]
Using this rule, we get
[tex]g(x)=-\dfrac{2}{5}(10)^x[/tex] [tex][\because f(x)=\dfrac{2}{5}(10)^x][/tex]
Therefore, the correct option is A.
Please answer fast ASAPPPP
Answer:
[tex]\frac{13}{3}[/tex] ÷ [tex](-\frac{5}{6})[/tex]
Step-by-step explanation:
[tex]4\frac{1}{3}/(-\frac{5}{6})=\\\\\frac{13}{3}/(-\frac{5}{6})[/tex]
Answer:
13/3 ÷ - 5/6
Step-by-step explanation:
4 1/3 ÷ - 5/6
Change the mixed number to an improper fraction
4 1/3 = (3*4 +1)/3 = 13/3
13/3 ÷ - 5/6
Create a table of values for the function f(x) = (1/3)^–x
Answer:
See the explanation
Step-by-step explanation:
The function given to us is:
f(x) = (1/3)⁻ˣ
We can convert the negative power into positive one by interchanging the numerator and denominator.
f(x) = (3/1)ˣ
f(x) = 3ˣ
Substitute value for x= -3 , -2, -1, 0, 1, 2, 3
f(-3) = 3⁻³ = 0.037
f(-2) = 3⁻² = 0.111
f(-1) = 3⁻¹ = 0.333
f(0) = 3⁰ = 1
f(1) = 3¹ = 3
f(2) = 3² = 9
f(3) = 3³ = 27
f(4) = 3⁴ = 81
and so on
The table of the found values of f(x) or y for the corresponding values of x, along with their graph is given below.
A tree casts a shadow 21m long. The angle of elevation of the sun is 55 degrees. What is the height of the tree?
Answer:
The height of the tree is about 30 feet.
Step-by-step explanation:
tan(55) = h/21
*21 *21
21*tan(55)=h
29.99=h
h=29.99=30 feet
The height of the tree will be 30 feet.
What is a right-angle triangle?It's a form of a triangle with one 90-degree angle that follows Pythagoras' theorem and can be solved using the trigonometry function.
Given; A tree casts a shadow 21 m long.
The angle of elevation of the sun is 55°.
Let h be the height of tree.
Then the height of the tree will be;
tan(55) = h/21
21*tan(55)=h
29.99=h
h = 29.99 = 30 feet
Therefore, The height of the tree will be 30 feet.
More about the right-angle triangle link is given below;
brainly.com/question/3770177
#SPJ2
Please help me match these formulas . :)
Answer:
1. equilateral triangle
2. rectangle
3. circle area
4. trapezoid
5. circle circumference
6. parallelogram
7. regular polygon
8. triangle
Hope that helps.
Why is the domain of this function?
Answer:
Step-by-step explanation:
The answer is A
Can someone help me solve this?
Answer:
(a) y = -3/5 x + 13/5
(b) y = 5/3 x + 1/3
Step-by-step explanation:
(a) The slope of the tangent line is dy/dx. Use implicit differentiation:
x² + y² + 4x + 6y − 21 = 0
2x + 2y dy/dx + 4 + 6 dy/x = 0
2x + 4 + (2y + 6) dy/dx = 0
x + 2 + (y + 3) dy/dx = 0
(y + 3) dy/dx = -(x + 2)
dy/dx = -(x + 2) / (y + 3)
At the point (1, 2), the slope is:
dy/dx = -(1 + 2) / (2 + 3)
dy/dx = -3/5
Using point-slope form of a line:
y − 2 = -3/5 (x − 1)
Simplifying to slope-intercept form:
y − 2 = -3/5 x + 3/5
y = -3/5 x + 13/5
(b) The normal line is perpendicular to the tangent line, so its slope is 5/3. It also passes through the point (1, 2), so point-slope form of the line is:
y − 2 = 5/3 (x − 1)
Simplifying to slope-intercept form:
y − 2 = 5/3 x − 5/3
y = 5/3 x + 1/3
erza is training for a track race. He starts by sprinting 100 yards. he gradually increases his distance, adding 5 yards a day for 21 days. Which explicit formula models this situation? A. an=100 + (n-1)21 B. an=100 + (n-1)5 C. an=5 + (n-1)100 D. an=21 + (n-1)5
Answer:
B. an=100 + (n-1)5
Step-by-step explanation:
Using the explicit formula
an = a1+ d(n-1)
we know a1 is 100, which is the staring amount
We know d is the amount added each time or the common difference which is 5
an = 100 + 5(n-1)
If we want to find a specific day, we can substitute in for n
HURRY I NEED HELP for 20 points
Beginning at the origin, how far do you travel along the y-axis when plotting the point below? (6, 12)
Answer:
the answer is 12
Step-by-step explanation:
because (6, 12) x axis is 6, and the 12 is the y axis. Meaning that you would go 12 along the y axis.
Answer:
I believe the answer is 12
Prove that 3(x+1)(x+7)-(2x+5) ^2 is never positive
Answer:
Step-by-step explanation:
It will never be positive becasue there is a negitive sign in the equation. negitives overule positives. Therefor it will never be positive.
Please help me with this problem
Answer:
A- 30,968 + 31,211
Step-by-step explanation:
Since 62,179 minus 31,211 is equal to 30968, 30968 plus 31,211 can be used to help check the answer for 62,179 minus 31,211.