15.) Use square ABCD. If BC = 21, find AC. Round your answer to the
nearest tenth if needed.
*PLEASE HELP, ILL GIVE GOOD REVIEWS SND EXTRA POINTS, I NEED HELP ASSAP*
Answers
Answer:
Hope this helps you!
AC= 29.7
Related Questions
Please help me with this.
Answers
9514 1404 393
Answer:
45 or 155
Step-by-step explanation:
At a speed of 11 units per minute, in 5 minutes the bug will run 5×11 = 55 units.
If the bug is running in the positive direction, it will end at location ...
100 +55 = 155
If the bug is running in the negative direction, it will end at location ...
100 -55 = 45
At 7:20 pm, the bug will be on the point 45 or 155.
4w2 + 3w - 1
5w - 2
Area
Answers
Answer:
<math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
<mrow>
<mi>w</mi>
</mrow>
<mrow>
<mn>2</mn>
</mrow>
<mo>=</mo>
<mo>−</mo>
<mrow>
<mn>5</mn>
</mrow>
<mfrac>
<mrow>
<mi>w</mi>
</mrow>
<mrow>
<mn>4</mn>
</mrow>
</mfrac>
<mo>+</mo>
<mfrac>
<mrow>
<mn>1</mn>
</mrow>
<mrow>
<mn>2</mn>
</mrow>
</mfrac>
</math>
Step-by-step explanation:
Can someone plz help me with this asap I would really appreciate it
Answers
That should be correct
please help find the values of a,b,c
Answers
9514 1404 393
Answer:
a = 3b = 4c = 2d = 1Step-by-step explanation:
There are zeros at x=-1 and x=4, so numerator factors of (x +1) and (x -4).
There are vertical asymptotes at x=1 and x = -2, so denominator factors of (x-1) and (x+2).
There is a hole at x=-3, so another numerator factor of (x+3) to cancel the one in the denominator.
Comparing the above to the given expression for f(x) we see that ...
a = 3b = 4c = 2d = 1Fill in the blanks: for a and b
Answers
Answer: b for a sorry that’s all I Could understand
Step-by-step explanation:
A cylinder has a height of 5 feet and a radius of 2 ft.
If a scale model of the cylinder is scaled up by a factor of 3, what is the surface area of the model?
756.20 ft.
791.68 ft.
832.05 ft.
865.28 ft.2
Answers
Answer:791.68
Step-by-step explanation:
2*pi*6^2 + 15 *pi * 12 = 791.68
want to learn symmetry?
Answers
Answer:
yes
Step-by-step explanation:
Answer:
i dont know maybe
Step-by-step explanation:
idc
NEED AN ANSWER ASAP!!! WILL REWARD HANDSOMELY!!!
Felicia has a ladder that is 11 ft long. She wants to lean the ladder against a vertical wall so that the top of the ladder is 9.5 ft above the ground. For safety reasons, she wants the angle the ladder makes with the ground to be no greater than 75°. Will the ladder be safe at this height? Show all your work and draw a diagram to support your answer.
Answers
Answer:
See attached diagram
We have
GT = 9.5 ftBT = 11 ftLet's find angle x and compare with the safety requirement
GT/BT = sin x9.5/11 = sin xx = arcsin (9.5/11)x = 59.7° < 75°The angle we got is less than 75° so it is safe to use
find the zero of the polynomial p(x)=5x-10?
Answers
Answer:
x=2
Step-by-step explanation:
hope this helps i haven't done math like this in forever
There are 12 members of a basketball team. In how many ways can they choose 2 captains.
Answers
Answer:
66
Step-by-step explanation:
hope this help an i will not ask if anyone a boy or girl.
Can you help me with this question I am stuck it would be nice if u helped me! <3
Answers
Answer:
You did it correctly that's the right answer
Great Job!
How many solutions does the system have?Explain
Y=2x+3
-4x+2y=8
Please anyone help !?
Answers
Substitute the first equation for y in the second equation. You can see it does not work. 6 does not equal 8. Therefore there are no solutions.
Rose went to the craft store to buy beads to make bracelets. Each bag of beads cost $4.59. Which equation can be used to find the y, rose's total purchase price when she buys x bags of beads?
Answers
Answer:
pp
Step-by-step explanation:
lol
lol
Find the following rates. Round your answer to the nearest hundredth. a. ? % of 75 = 5 b. ? % of 28 = 140 c. ? % of 100 = 40 d. ? % of 200 = 15
Answers
Answer:
a. ? % of 75 = 5 = 15
b. ? % of 28 = 140 = 500
c.? % of 100 = 40 = 40
d.? % of 200 = 15 = 7.5
Hope it helped...
Have a great day : )
y=-3(x + 5)2 - 4
Convert the equation from vertex form to standard form.
Answers
Answer: pink one
Step-by-step explanation:
The convert form of vertex equation y = -3(x+5)² - 4 in standard equation is y = -3x² - 30x - 79.
What is vertex form of equation?The standard form of the equation is ax²+bx+c=y and the vertex form of the equation is y= a(x-h)²+k,
Where k is a constant.
The given equation is,
y = -3(x+5)² - 4
To convert this vertex form of equation is standard form,
Simplify,
y = -3(x²+ 25 + 10x) - 4
y = -3x² -75 - 30x - 4
y = -3x² - 30x - 79
The required standard form of equation is y = -3x² - 30x - 79.
To learn more about Vertex form of equation on:
https://brainly.com/question/19173306
#SPJ2
A house blueprint has a scale of 1in : 10ft the length and width of each room in the actual house are shown in the table complete the table by finding the length and width of each room on the blueprint
Help me with this one
Answers
Answer:
30x40=3inx4in
50x50=5inx5in
40x20=4inx2in
30x40=3inx4in
30x30=3inx3in
35x40=3.5inx4in
Step-by-step explanation:
a right cone has a radius 3 and slant height 5. the radius and slant height are both multiplied by 3/2. describe the effect on the surface area
Answers
Answer:
The surface area is multiplied by 4/9.
Step-by-step explanation:
you welcomeeeeeeeeeeeeeeeeeeeeeeeee
First lets find the surface area of cone without effect
Given:
Radius of cone = 3 units
Slant height of cone = 5 units
To find:
Surface area of cone
Steps:
Surface area of a cone = πr (r + l)
= π × 3(3 + 5)
= π × 3 (8)
= π × 24
= 24π unit²
Now lets find the surface area of cone with effect
Given:
Radius of cone = 3 × 3/2 = 9/2 = 4.5 units
Slant height of cone = 5 × 3/2 = 15/2 = 7.5 units
To find:
Surface area of cone
Steps:
surface area of cone = πr(r + l)
= π × 4.5( 4.5 + 7.5 )
= π × 4.5( 12 )
= π × 54.0
= 54π
Since we know the surface area of the cones before and after affect now lets find effect
Given:
Surface area of cone before affect = 24π
Surface area of cone after affect = 54π
To find:
Effect on the surface area of cone before and after change
Steps:
By dividing the surface area of cone after and before affect will give us the effect on the cone
54π / 24π
= 54/24 (pi gets canceled out)
= 27/12
= 2.25
Therefore the area of cone is multiplied by 2.25 after effect.
Happy to help :)
If you need any help, please feel free to ask.
Find the area of the triangle.
The area is = yd
(simplify your answer)
Answers
a = 30 x 31.5 x 1/2
a = 15 x 31.5
a = 472.5
Answer:
472.5
Hope this helps
Which of the following explains the role of Pi (1) in finding the circumference of a circle?
А
Pi is the ratio of the radius of a circle to the diameter of a circle.
B
Pi is the ratio of the radius of a circle to the circumference of a circle.
С
Pi is the ratio of the diameter of a circle to the circumference of a circle.
D
Pi is the ratio of the circumference of a circle to the area of a circle.
Answers
Answer:
The answer is C, The use of Pi can be used to find the ratio of the diameter and circumference of a circle
Step-by-step explanation:
Write an expression that represents 20.5 (Algebra)
Answers
f(x)=[tex]\sqrt{x^2-4}[/tex], x[tex]\leq \}[/tex]0
find [tex](f^-^1)'(1)[/tex]
I keep getting the wrong answer. The correct answer is[tex]\frac{1}{\sqrt{5} }[/tex]
Answers
Solve for x when √(x ² - 4) = 1 :
√(x ² - 4) = 1
x ² - 4 = 1
x ² = 5
x = ±√5
We're looking at x ≤ 0, so we take the negative square root, x = -√5.
This means f (-√5) = 1, or in terms of the inverse of f, we have f ⁻¹(1) = -√5.
Now apply the inverse function theorem:
If f(a) = b, then (f ⁻¹)'(b) = 1 / f '(a).
We have
f(x) = √(x ² - 4) → f '(x) = x / √(x ² - 4)
So if a = -√5 and b = 1, we get
(f ⁻¹)'(1) = 1 / f ' (-√5)
(f ⁻¹)'(1) = √((-√5)² - 4) / (-√5) = -1/√5
The sign must be negative; see the attached plot, and take note of the negatively-sloped tangent line to the inverse of f at x = 1.
What is the equation of the line that has a slope of 4 and passes through the point (4,1)
Answers
Answer:
B
Step-by-step explanation:
y-y1=m(x-x1)
y-1=4(x-4)
what is 3/4 years converted into months.
Answers
Step-by-step explanation:
9 months
answer:
9 months
step-by-step explanation:
honestly this problem isnt super super complicated as we need to do is use some multiply tables! :)
since we know that
4*3
= 12
and in this problem
1/4
just means
= 3 months
so
3*3
= 9 months
hope this helps you! :)
Rewrite each subtraction equation as an addition equation.
p - 20 = - 30
Answers
Answer:
p + 30 = 20
Step-by-step explanation:
we can add 30 to both sides to make this an addition equation:
p - 20 = -30 (now add 30 to both sides)
p - 20 + 30 = 0 (then, add 20 to both sides)
p + 30 = 20 (this would be the addition equation)
1) 70% of what number is 28?
Answers
Answer: 40
Step-by-step explanation: 40*.7 is 28 so that's the answer. How I got the answer was I did 28/.7 to get 40
Hope this helps and brainliest would be appreciated
Someone answer and explain ILL MARK BRAINLIEST!!!!!!!!!!!!!
Answers
Answer:
Step-by-step explanation:
Answer:
Just explained a while ago
Step-by-step explanation:
An electronics store is having a 15% off sale. Suppose the sale price(p) of a laptop is $495. Which statement are true for this stuation
A. P+ 0.15p represents the sales price
B. P- 0.15p represent the sales price
C. 0.85p represents the sales price
D. The sale price is 420.75
E. The sale price is 569.25
Answers
Answer:
Step-by-step explanation:
None of the choices is correct. Are you sure that the question was written accurately?
If p is the REGULAR price, not the same price, then there are three correct answers:
sale price = p-0.15p = 0.85p = $420.75
Answer:
b, c, d
Step-by-step explanation:
i took the quiz and these were the correct answers. ur welcome in advance
A witness identified a suspect as having blond hair. However, when tested under lighting conditions similar to those on the night of the incident, it was concluded that the probability of correctly identifying blond hair was 0.90 and the probability of being incorrect about non-blond hair was 0.2. Suppose that 0.4 is the proportion of persons with blond hair that live in the area. Let two events A and B be defined as A = [ Identified as blond and B = [ Person is blond] 1. Fill in the four probabilities, and the marginal totals, in the two-way table. using... (A, B, Not A, Not B) 2. Given that this person was identified as blond, find the probability of being blond 3. Make a Venn diagram to display the relations among these two events.
Answers
Answer:
To get the table we have to find the following probabilities
p(A), p(B), p(not A), p(not B)
A = suspect has blond hair
B = suspect is blond
p(B) = 0.4
probability of identifying correctly = AIB = 0.90
prob of wrongful identification = AlB' = 0.2
Probability of A = p(AIB) *p(B) + p(AIB')*p(B')
= 0.9 * 0.4 + 0.2 *(1-0.4)
= 0.48
p( not A) = 1-0.48 = 0.52
p(not b) = 1-0.40 = 0.6
the table has been added as an attachment
2. probability of being blond = 0.9 * 0.4 / 0.48 = 0.75
3. p(A∩B) = 0 .90 * 0.4 = 0.36
the venn diagrams an attachment also
Is Figure B a scale copy of Figure A?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~A: Yes
B: No
Answers
Answer:
A
Step-by-step explanation:
A research scientist wants to know how many times per hour a certain strand of bacteria reproduces. He believes that the mean is 12.6. Assume the variance is known to be 3.61. How large of a sample would be required in order to estimate the mean number of reproductions per hour at the 95% confidence level with an error of at most 0.19 reproductions
Answers
Answer:
A sample of 385 is needed.
Step-by-step explanation:
We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:
[tex]\alpha = \frac{1 - 0.95}{2} = 0.025[/tex]
Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].
That is z with a pvalue of [tex]1 - 0.025 = 0.975[/tex], so Z = 1.96.
Now, find the margin of error M as such
[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]
In which [tex]\sigma[/tex] is the standard deviation of the population, which is the square root of the variance, and n is the size of the sample.
Assume the variance is known to be 3.61.
This means that [tex]\sigma = \sqrt{3.61}[/tex]
How large of a sample would be required in order to estimate the mean number of reproductions per hour at the 95% confidence level with an error of at most 0.19 reproductions?
A sample of n is needed.
n is found when [tex]M = 0.19[/tex]. So
[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]
[tex]0.19 = 1.96\frac{\sqrt{3.61}}{\sqrt{n}}[/tex]
[tex]0.19\sqrt{n} = 1.96\sqrt{3.61}[/tex]
[tex]\sqrt{n} = \frac{1.96\sqrt{3.61}}{0.19}[/tex]
[tex](\sqrt{n})^2 = (\frac{1.96\sqrt{3.61}}{0.19})^2[/tex]
[tex]n = 384.16[/tex]
Rounding up
A sample of 385 is needed.