Answer:
s>885 (km/h)
Step-by-step explanation:
Since 885 is not a part of the inequality and the new aircrafts' speeds are greater than 885, speed s>885.
Evaluate the polynomial 6x - y, for x = -3 and y = 2.
a) -20
b) 4
c) -16
d) 15
please help me quick :(
Triangle PQR is transformed to triangle P'Q'R'. Triangle PQR has vertices P(4, 0), Q(0, −4), and R(−8, −4). Triangle P'Q'R' has vertices P'(1, 0), Q'(0, −1), and R'(−2, −1).
Plot triangles PQR and P'Q'R' on your own coordinate grid.
Part A: What is the scale factor of the dilation that transforms triangle PQR to triangle P'Q'R'? Explain your answer. (4 points)
Part B: Write the coordinates of triangle P"Q"R" obtained after P'Q'R' is reflected about the y-axis. (4 points)
Part C: Are the two triangles PQR and P''Q''R'' congruent? Explain your answer. (2 points)
NO LINKS PLEASE :)
Answer:
I don't know how helpful I'll be, sorry :(
Step-by-step explanation:
So the scale factor is 1/4 reduction because the triangle P'Q'R' is smaller than the original. When reflecting the triangle P'Q'R' over the Y axis, you'll have P"Q"R". The graphing might be a little confusing but it's just a vertical reflection.
P" = (-1,0)
Q"= (0,-1)
R"= (2,-1)
Triangles PQR and P"Q"R" are not congruent because P"Q"R" has had a 1/4 reduction and a vertical reflection.
jane loves animals. She has an equal number of beetles, birds and spiders as pets. Apart from human legs, there is a total of 270 legs in the house. How many spiders does Jane have if a spider has 8 legs and a beetle has 6 legs?
Answer:
16.875 spiders
Step-by-step explanation:
Given
Let
[tex]B = Beetles[/tex]
[tex]C = Birds[/tex]
[tex]S = Spiders[/tex]
So, we have:
[tex]B = C = S[/tex] --- equal amounts
[tex]6B + 2C + 8S = 270[/tex] --- the legs
Required
The number of spider
Since she has an equal amount of B, C and S;
The expression can be written as:
[tex]6B + 2C + 8S = 270[/tex]
[tex]6S + 2S + 8S = 270[/tex]
[tex]16S = 270[/tex]
Solve for S
[tex]S = \frac{270}{16}[/tex]
[tex]S = 16.875[/tex]
The result of the solution does not represent real life situation because it it is not possible to have a fraction number of spider
The Unit Circle
In a unit circle, the sine of the angle is represented by the vertical leg of the triangle. What is represented by the horizontal leg of the triangle?
a. cosecant of the angle
b. tangent of the angle
c. cosine of the angle
d. cotangent of the angle
Please select the best answer from the choices provided
Answer:
c. cosine of the angle
Step-by-step explanation:
Cos = adj/hyp
in unit circle
cos = x/1
cos = x
x is the horizontal leg
Answer:
C. Cosine of the angle
Step-by-step explanation:
I calculated it logically
HELP ME PLEASEEEEEEEEEE
I hope this helps- i need to write words so here this lol yep yep have a nice day- :)
539,904 nearest 10 for my homwork
Answer:
539,900 if thats what you're looking for.
Step-by-step explanation:
Answer:
539900
Step-by-step explanation:
You come across a box of perfume what should you do Amazon
I need help ASAP do at 7:30
Answer:
it would be 2294 if its 31 x 74 or 105 if its 31 + 74
Step-by-step explanation:
Neeta is a fourth grader. She is 4 feet 7 inches tall. When she was bom she was 17 inches long. How much has Neeta grown since she was born?
Answer:
A
Step-by-step explanation:
First, find Neeta's total height in inches:
4 feet in inches is 4*12, which equals 48
Add the other 7 inches of her height to get 55 inches.
Then, subtract her initial height from her current height.
55 - 17 = 38. That is how many inches she has grown. Convert that to feet by dividing 38 by 12.
You get about 3.16, which is over 3 feet. So A is the correct answer.
To compute the necessary sample size for an interval estimate of a population proportion, all of the following procedures are recommended when p is unknown except :____________
a. use the sample proportion from a previous study.
b. use the sample proportion from a preliminary sample.
c. use 1.0 as an estimate.
d. use judgment or a best guess.
Answer:
c- use 1.0 as an estimate
Step-by-step explanation:
Solve the equation. I just want an answer that is correct. I'm don't understand how to solve this.
Answer:
2222333344445555666677778888
Step-by-step explanation:
I don't see the thing
solve for c 2(3-2c)=30
Answer:
6-4c
Step-by-step explanation:
2(3-2c)
2×3+2×-2c
6+2×-2c
6-4c
Answer:
-6
Step-by-step explanation:
1 Find the measure of angle B
Answer:
The measure of angle B is 50
Step-by-step explanation:
Find the measure of x.
SOMEONE PLEASE HELP
Of 36 chemical elements, 2 are named for women scientist and 25 are named for palces. What fraction of these 36 elements are named for women or place? Show your work
Answer:
27/36
Step-by-step explanation:
25 + 2 = 27
total = 36
MATH MATH MATH MATHHHHHHHHHHHHHH
Answer:
1. Obtuse angle
2. 5
3. 117
Step-by-step explanation:
1. Any angle that is wider than 90 degrees is obtuse.
2. 180 = straight angle so, 180-140=40 8x5=40 so x=5
3. Supplementary angles are one angle that is 180 so, 180-63= 117
A graphic designer creates a logo in the shape of an ellipse. The equation x^2/64 + y^2/14.44 = 1, with units in centimeters,
represents the outer edge of the logo. How tall is the logo?
a. 3.8 cm
b. 7.6 cm
c. 8 cm
d. 16 cm
Using the equation of ellipse, the height of the logo is 7.6cm
What is equation for ellipse?The equation of ellipse having a center (h, k) is given as;
[tex]\frac{(x - h)^2}{a^2} + \frac{(y - k)^2}{b^2} = 1[/tex]
where a is the semi-major axis and b is the semi-minor axis. The major axis is the longer of the two axes, and the minor axis is the shorter of the two axes. The center of the ellipse is the point (h, k).
The graph of an ellipse is a closed curve that is similar to a circle, but it is not a circle. The ellipse is wider than it is tall if a > b, and it is taller than it is wide if a < b.
In the given problem;
The equation for an ellipse is
[tex]\frac{x^2}{a^2} + \frac{y^2}{b^2} = 1,[/tex] where a is the semi-major axis and b is the semi-minor axis. In this case, a = √64 = 8 and b = √14.44 = 3.8
Since b = 3.8, the height of the logo = 2b = 2 * 3.8 = 7.6cm
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Answers ASAP please I really need it
Answer:
x = 50
Step-by-step explanation:
Answer:
x = 50
Step-by-step explanation:
180 - 75 = 105
2x + 5 = 105
now I subtracted both sides by 5
2x = 100
divide both sides by 2:
x = 100/2
x = 50
Have a nice day!
Please answer fast and correctly :)
Answer:
Graph A is correct
Step-by-step explanation:
The line intersects 45 x and 3 y
Answer:
Graph A! :-)
Step-by-step explanation:
At Sally's Hair Salon there are three hair stylists. 22% of the haircuts are done by Chris, 30% are done by Karine, and 48% are done by Amy. Chris finds that when he does haircuts, 5% of the customers are not satisfied. Karine finds that when she does haircuts, 3% of the customers are not satisfied. Amy finds that when she does haircuts, 7% of the customers are not satisfied. Suppose that a customer leaving the salon is selected at random. If the customer is not satisfied, what is the probability that their hair was done by Chris
Answer:
0.2052 = 20.52% probability that their hair was done by Chris
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]
In which
P(B|A) is the probability of event B happening, given that A happened.
[tex]P(A \cap B)[/tex] is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Customer not satisfied
Event B: Hair done by Chris.
Probability of a customer not being satisfied.
5% of 22%(Chris)
3% of 30%(Karine)
7% of 48%(Amy)
This means that:
[tex]P(A) = 0.05*0.22 + 0.03*0.3 + 0.07*0.48 = 0.0536[/tex]
Probaility of a customer not being satisfied and hair done by Chris:
5% of 22%. So
[tex]P(A \cap B) = 0.05*0.22 = 0.011[/tex]
What is the probability that their hair was done by Chris?
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.011}{0.0536} = 0.2052[/tex]
0.2052 = 20.52% probability that their hair was done by Chris
1. Alex was solving an equation with the variable x. Upon simplifying the equation, he
concluded that the equation has no solution. Which equation could be Alex's equation
after he simplified it?
B.
A X0
X2
C3=3
D4=5
Answer:did you get the answer yet cause I really need it
Step-by-step explanation: please y’all help this person answer the question
can someone help me pls
Answer:
[tex]x = 55°[/tex]
Step-by-step explanation:
L1 and L2 are parallel, so that the 2 interior angles are equal to 180°.
[tex](2x + 10) + (x + 5) = 180° \\ 2x + x + 10 + 5 = 180° \\ 3x = 165° \\ x = 55°[/tex]
the parent cosine function is transformed to create the function m(x) =-2cos(x+π). which graphed function has the same amplitude as function m
Answer: Graph D
Step-by-step explanation: Got it right on plato
The graph of a function with the same amplitude as m(x) is graph D.
Which graphed function has the same amplitude as m(x)?
The general cosine function is written as:
f(x) = A*cos(kx) + M
Where A is the amplitude, k is the angular frequency, and M is the midline.
In our case:
m(x) = -2*cos(x+π).
The amplitude is -2, which means that the distance between a peak and a trough must be twice the absolute value of the amplitude:
2*|-2| = 4
With this in mind, the only graph that meets this requirement is the graph D.
If you want to learn more about cosine functions, you can read:
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Sara was thinking of a number. Sara divides by 2, then adds 10 to get an answer of 6. What was the original number?
Answer:
The original number was -8
Step-by-step explanation:
You can find this out because -8 divided by 2 is -4 and then plus 10 would become 6
Answer:
-8
Step-by-step explanation:
We know that Sara has a number by which she divides by 2, added 10 and ended up with 6. We are then asked to find the original number she had in mind.
To solve, we need to go backwards, starting with the original number, and applying all the steps she did but with the opposite operation.
6 is her ended number, we know before she added 10, so subtract 10 from 6:
[tex]6-10=-4[/tex]
Now we know that she divided by 2, therefore multiply -4 by 2:
[tex]-4*2=-8[/tex]
-8 was Sara's first number.
What are the first three terms of a geometric sequence in which as = 25 and the common ratio is 5?
1 1
1
25'5
25,125,625
1 1 1
25'125 '625
O 125, 25, 5
Mark this and return
Save and Exit
Next
Submit
Answer:
The first three terms are: 25, 125 and 625
Step-by-step explanation:
Given
[tex]a =25; r = 5[/tex]
Required
The first three terms
The nth term of a geometry progression is:
[tex]T_n =ar^{n-1[/tex]
So, we have:
First term: [tex]n = 1[/tex]
[tex]T_n =ar^{n-1[/tex]
[tex]T_1 =25 * 5^{1-1[/tex]
[tex]T_1 =25 * 5^0[/tex]
[tex]T_1 =25 * 1[/tex]
[tex]T_1 =25[/tex]
Second term: [tex]n = 2[/tex]
[tex]T_n =ar^{n-1[/tex]
[tex]T_2 =25 * 5^{2-1[/tex]
[tex]T_2 =25 * 5^{1[/tex]
[tex]T_2 =25 * 5[/tex]
[tex]T_2 =125[/tex]
Third term: [tex]n = 3[/tex]
[tex]T_n =ar^{n-1[/tex]
[tex]T_3 =25 * 5^{3-1[/tex]
[tex]T_3 =25 * 5^{2[/tex]
[tex]T_3 =25 * 25[/tex]
[tex]T_3 =625[/tex]
Answer: 25,125,625
Step-by-step explanation:
edg 2
The concession stand is selling hot dogs and hamburgers during a game. At
halftime, they sold a total of 74 hot dogs and hamburgers and brought in $100.
How many of each item did they sell if hamburgers sold for $1.50 and hot dogs
sold for $1.25?
Answer:
44 hotdogs
30 hamburgers
Step-by-step explanation:
b r a i n and p a p e r
Determine the radius of a cone that has a volume of 230 ft' and a height of 15 ft.
Round the answer to the nearest tenth.
Answer:
the formula for finding cone volume is V=πr²× 1/3
Step-by-step explanation:
230=3.14×x²×1/3
we have to solve for X that is our radius
14.8
What is the value of the expression 1/7 divided by 5 ?
Answer:
It would be 1/35.
Step-by-step explanation:
You turn 5 into 1/5 and then multiply 1/7 with 1/5, which is 1/35.
The value of the expression 1/7 divided by 5 is,
⇒ 1 / 35
What is Division method?Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications.
For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.
We have to given that;
The expression is,
⇒ 1/7 divided by 5
Now, We can simplify as;
⇒ 1/7 divided by 5
⇒ 1 / 7 ÷ 5
⇒ 1 / 7×5
⇒ 1 / 35
Thus, The value of the expression 1/7 divided by 5 is,
⇒ 1 / 35
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There are eight black balls and two white balls in a bag. What is the probability of picking one black ball without looking?
Answer:
8/10 or simplified will be 4/5
Step-by-step explanation:
Since there are 8 black balls and 10 balls in total, this is the probability
The probability of picking one black ball without looking is, 4/5.
What is probability?Probability is the chance of occurrence of a certain event out of the total no. of events that can occur in a given context.
Given, There are eight black balls and two white balls in a bag.
So, N(B) = 8 and N(W) = 2.
The sample space N(S) = 8 + 2 10.
Therefore, The likelihood of randomly selecting one black ball is,
P(B) = N(B)/N(S).
P(B) = 8/10.
P(B) = 4/5.
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Gavin deposited money into his savings account that is compounded annually at an interest rate of 9%. Gavin thought the equivalent quarterly interest rate would be 2.25%. Is Gavin correct? If he is, explain why. If he is not correct, state what the equivalent quarterly interest rate is and show how you got your answer.
Answer:
The equivalent rate is of 0.093 = 9.3% a year. Gavin is wrong, because he applied the wrong formula, its not just dividing the interest rate r by the number of compoundings n, it is [tex]E = (1 + \frac{r}{n})^{n} - 1[/tex]
Step-by-step explanation:
Equivalent interest rate:
The equivalent interest rate for an amount compounded n times during a year is given by:
[tex]E = (1 + \frac{r}{n})^{n} - 1[/tex]
In which r is the interest rate and n is the number of compoundings during an year.
Compounded annually at an interest rate of 9%
This means that [tex]r = 0.09[/tex]
Compounded quarterly:
This means that [tex]n = 4[/tex]
Equivalent rate:
[tex]E = (1 + \frac{0.09}{4})^{4} - 1 = 0.093[/tex]
The equivalent rate is of 0.093 = 9.3% a year. Gavin is wrong, because he applied the wrong formula, its not just dividing the interest rate r by the number of compoundings n, it is [tex]E = (1 + \frac{r}{n})^{n} - 1[/tex]