Answer:
53
Step-by-step explanation:
38+15 ?
Answer:
53
Step-by-step explanation:
This is very easy -
Mom's cookies + Eleni's cookies = total number of cookies
38 + 15 = total
38
+ 15
53 cookies total
Good Luck!
Hope this helps!
:)
Suppose we want to choose for letters without replacement from 18 distant lovers how many ways can this be done if the order of the choices does not matter
Answer:
This can be done in 3,060 ways.
Step-by-step explanation:
Letters are chosen without replacement, and the order does not matter, which means that the combinations formula is used.
Combinations formula:
[tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.
[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]
In this question:
Four letters from a set of 18. So
[tex]C_{18,4} = \frac{18!}{4!14!} = 3060[/tex]
This can be done in 3,060 ways.
A restaurant with 25 tables has 4 tables by the window. Parties are seated randomly at the tables as they come in.
What is the probability that the first 3 parties of the night are all seated at window seats?
The probability that the first 3 parties are selected from the window seats is 0.0041
What is Probability?Probability is a measure of the likelihood of an event to occur. Many events cannot be predicted with total certainty.
Probability can range from 0 to 1, where 0 means the event to be an impossible one and 1 indicates a certain event. The probability of all the events in a sample space adds up to 1.
The probability that a party will be chosen from the window seat is 4/25
Therefore the probability of 3 chosen from the window seat is 4/25×4/25×4/25
= 64/15625= 0.0041
learn more about probability from
https://brainly.com/question/24756209
#SPJ1
Solve for x.
3x/6 + 1 = 7
x = 12
x = 4
x = 16
What is the answer to
24 + y = 41
Answer:
y=17
Step-by-step explanation:
move the constant to the right hand side and change it's sign
y=41-24
then subtract the numbers y= 41-24
which = 17
Answer: i believe it is 24 + 17 = 41 ^^ can you give me brainly when you get the chance
Step-by-step explanation:
Question: An expression is shown below: f(x) = x^2 – 6x + 5
Part A: What are the x-intercepts of the graph of f(x)? Show your work.
Part B: Is the vertex of the graph of f(x) going to be a maximum or minimum? What are the coordinates of the vertex? Justify your answers and show your work.
Part C: What are the steps you would use to graph f(x)? Justify that you can use the answers obtained in Part A and Part B to draw the graph.
given a parabola in standard form
y
=
a
x
2
+
b
x
+
c
then the x-coordinate of the vertex can be found using
∙
x
x
vertex
=
−
b
2
a
y
=
x
2
−
6
x
+
5
is in standard form
with
a
=
1
,
b
=
−
6
,
c
=
5
⇒
x
vertex
=
−
−
6
2
=
3
substitute this value into equation for y-coordinate
y
vertex
=
3
2
−
6
(
3
)
+
5
=
−
4
⇒
vertex
=
(
3
,
−
4
)
the axis of symmetry is vertical and passes through the
vertex with equation
x
=
3
to find x-intercepts let y = 0
⇒
x
2
−
6
x
+
5
=
0
the factors of + 5 which sum to - 6 are - 1 and - 5
⇒
(
x
−
1
)
(
x
−
5
)
=
0
equate each factor to zero and solve for x
x
−
1
=
0
⇒
x
=
1
x
−
5
=
0
⇒
x
=
5
⇒
x
=
1
and
x
=
5
←
x-intercepts
graph{(y-x^2+6x-5)(y-1000x+3000)=0 [-10, 10, -5, 5]}
In a study of reaction times to a specific stimulus, a psychologist recorded these data (in seconds). Find the variance and standard deviation. Use a TI-83 Plus/TI-84 Plus calculator and round the answers to at least two decimal places.
Answer:
s² = 0.7965
s = 0.8925
Step-by-step explanation:
Given the data :
Class limit __ midpoint(x) ___ Frequency
2.1 - 2.7 ______2.4 ________13
2.8 - 3.4 ______3.2 _______ 14
3.5 - 4.1 ______ 3.8 _______ 10
4.2 - 4.8 ______4.5 _______ 6
4.9 - 5.5______ 5.2 ________2
5.6 - 6.2______ 5.9 ________ 1
The midpoint was calculated thus :
(Upper limit + lower limit) / 2
Using a graphing calculator :
The sample variance, s² = 0.7965
The sample standard deviation, s = 0.8925
Select the correct answer.
On the curve y = x/3
point P has coordinates (2.0.667). What is the slope of the curve at point P?
A.0.033
B.0.067
C.0.333
D.0.667
Answer:
c and d
Step-by-step explanation:
List the intergers below
Answer:
All integers that are below 0 is -1, -4, -2, -8, and -7.
Which expression is equivalent to 1/2 (6x + 1/2)
Answer:
3x + 1/4
Step-by-step explanation:
1/2 (6x + 1/2)
Distribute
1/2 * 6x + 1/2 * 1/2
3x + 1/4
Find the surface area of a square pyramid with side length 4 and slant height 5.
Answer:
56
Step-by-step explanation:
the surface area = (4×4) + (4×½×4×5)
= 16 + 40
= 56
Will give BRAINLIEST
Answer:
38 (cm.)
Step-by-step explanation:
1) to calculate the values of 'x' and 'y' (see the picture):
x=10-3-3-2=2 cm.
y=3 cm.
2) to calculate the required perimeter:
10+3+3+6+3+3+2+3+2+3=38 cm.
Determinar a posição da reta r, de equação 2x-3y+5=0, em relação à reta s, de equação 4x-6y-1=0
Answer:
[tex]2x - 3y = - 5 - - - (a) \\ 4x - 6y = 1 - - - (b) \\ no \: answers[/tex]
how do i solve this ?
Answer:
[tex]2\sqrt{2}[/tex]
Step-by-step explanation:
The given triangle is an isosceles triangle. However, one can see that it has a right angle (indicated by the box around the angle). Thus the triangle is a (45 - 45 - 90) triangle. A (45- 45 - 90) triangle is the only right isosceles triangle. One of the properties of a right isosceles triangle is that its sides follow the following ratio,
[tex]a;a;a\sqrt{2}[/tex]
Where (a) represents the legs of the right triangle, the sides that are adjacent to the right angle, in this case, the congruent sides. ([tex]a\sqrt{2}[/tex]) is the hypotenuse, the side opposite the right angle.
It is given that the hypotenuse is equal to (4), one is asked to find the length of the legs. To do so, divide the hypotenuse by ([tex]\sqrt{2}[/tex]) to find the legs. One can do this because the triangle is a (45 - 45 - 90) triangle, thus it must follow the ratio of the sides.
[tex]=\frac{4}{\sqrt{2}}[/tex]
Rationalize the denominator,
[tex]\frac{4}{\sqrt{2}}\\\\=\frac{4\sqrt{2}}{2}\\\\=2\sqrt{2}[/tex]
help please lol soon
Answer:
d.
D: {-7, 0, 2, 6}
R: {-13, 0, 5, 13}
Step-by-step explanation:
Domain of a relation is the set of all input values (x-values) while the range is the set of all corresponding output values (y-values) in a given relation.
Given the relation represented by the table above,
Domain would be: {-7, 0, 2, 6}
Range: {-13, 0, 5, 13}
What is the value of “a” in the function equation?
Answer: the value of A is 2
Step-by-step explanation:
PLS HELP
Which is a solution for the inequality -6x – 5 <-23 ?
(1) O
(2) 2
(3) -2
(4) 5
If the original quantity is 14 and new quantity is 35 what is the percent change
Answer:
150%
Step-by-step explanation:
given:
original quantity = 14
new quantity = 35
increased quantity = 35 - 14
=21
percent change = increased quantity /original quentity * 100%
=21/14 *100%
=21100/14 %
=150 %
If a rectangle has a length of 8 centimeters and a width of 5 centimeters, then what is the area of the rectangle in square centimeters?
Answer:
40 centimeters square.
Step-by-step explanation:
Area= length × width
8×5=40
Have a nice day
A certain group of test subjects had pulse rates with a mean of 75.2 beats per minute and a standard deviation of 11.2 beats per minute. Use the range rule of thumb to identify the limits separating values that are significantly low or significantly high. Is a pulse rate of 147.6 beats per minute significantly low or significantly high?
Answer:
The z-score for a pulse rate of 147.6 beats per minute is 6.46 > 2, which means that this pulse rate is significantly high.
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the z-score of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.
By the Range Rule of Thumb, if Z < -2, the measure X is significantly low, and if Z > 2, the measure X is significantly high.
Mean of 75.2 beats per minute and a standard deviation of 11.2 beats per minute.
This means that [tex]\mu = 75.2, \sigma = 11.2[/tex]
Is a pulse rate of 147.6 beats per minute significantly low or significantly high?
We have to find Z when X = 147.6. So
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{147.6 - 75.2}{11.2}[/tex]
[tex]Z = 6.46[/tex]
The z-score for a pulse rate of 147.6 beats per minute is 6.46 > 2, which means that this pulse rate is significantly high.
this................................................................................................
Answer:
5
Step-by-step explanation:
3-(-2)
the two negative signs cancel out and it turns into
3 + 2
3 + 2 = 5
Answer:
5
Step-by-step explanation:
minus * minus = plus
3-(-2) = 3 + 2 = 5
Write an augmented matrix of each system. Then, solve each system using matrix notation. Describe the solution set in vector notation.
Answer:
The answer is below
Step-by-step explanation:
Given the system of equations:
x + y + 2z = 9
2x + 4y - 3z = 1
3x + 6y - 5z = 0
This system of equation can be solved using matrix. This done by first representing the equations as matrix and then solving:
The matrix form is:
[tex]\left[\begin{array}{ccc}1&1&2\\2&4&-3\\3&6&-5\end{array}\right] \left[\begin{array}{c}x\\y\\z\end{array}\right] = \left[\begin{array}{c}9\\1\\0\end{array}\right] \\\\\\ \left[\begin{array}{c}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}1&1&2\\2&4&-3\\3&6&-5\end{array}\right] ^{-1} \left[\begin{array}{c}9\\1\\0\end{array}\right] \\\\\\[/tex]
[tex]\left[\begin{array}{c}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}2&-17&11\\-1&11&-7\\0&3&-2\end{array}\right] \left[\begin{array}{c}9\\1\\0\end{array}\right] \\\\\\ \left[\begin{array}{c}x\\y\\z\end{array}\right] =\left[\begin{array}{c}1\\2\\3\end{array}\right][/tex]
Matthew collected data on what types of pets sixth grade students owned.
He asked 200 students and then created this graph.
Based on the circle graph, how many students own a dog?
can anyone someone please help me:((
What is the correct standard form of the equation of the parabola?
Enter your answer below. Be sure to show each step of your work.
Answer:
Therefore, the standard for will be:
[tex]y=\frac{1}{4}x^{2}-x-4[/tex]
Step-by-step explanation:
The equation of a parabola written as vertical axes is given by:
[tex](x-h)^{2}=4p(y-k)[/tex] (1)
The vertex of the parabola (h,k) is (2,-5).
The focus (h,k+p) is (2,-4)
Then we can find p knowing that:
h = 2
k = -5
k + p = -4 then p = -4+5 = 1
Putting all these values in equation (1) we will find the equation of the parabola:
[tex](x-2)^{2}=4(1)(y-(-5))[/tex]
[tex](x-2)^{2}=4(y+5)[/tex] (2)
Now, we need to find the standard form of the equation of the parabola.
Let's recall that standard form is:
[tex]y=ax^{2}+bx+c[/tex]
We just need to work out equation (2) to convert it to the standard form.
[tex](x-2)^{2}=4(y+5)[/tex]
[tex]x^{2}-4x+4=4(y+5)[/tex]
[tex]\frac{1}{4}x^{2}-x+1=y+5[/tex]
Therefore, the standard for will be:
[tex]y=\frac{1}{4}x^{2}-x-4[/tex]
I hope it helps you!
Simplify each expression by writing the expression without absolute value bars
Answer:
-1
Step-by-step explanation:
When b<4
|b-4| is negative
|b-4| = - ( b-4)
- (b-4) / ( b-4) =
Factoring out (b-4)
-1
helpppppppppppppppppppppppppp
Calculate the volume of space between the two cylinders in the diagram . Use 3.14 for pi! Show work !
Answer:
116933.6
Step-by-step explanation:
[tex]A_1 = \pi r^2 = 3.14 * 34^2 = 3.14 * 1156 = 3629.84[/tex]
[tex]V_1 = A_1 * h = 3629.84 * 40 = 145193.6[/tex]
[tex]A_2 = \pi r^2 = 3.14 * 15^2 = 3.14 * 225 = 706.5[/tex]
[tex]V_2 = A_2 *h = 706.5 * 40 = 28260[/tex]
[tex]V = V_1 - V_2 = 145193.6 - 28260 = 116933.6[/tex]
f(x) = x + 2 when x = 10
Answer:
f(10) = 12
Step-by-step explanation:
f(x) = x + 2
Substitute x for 10.
f(10) = 10 + 2
f(10) = 12
Answer:
12
Step-by-step explanation:
Substitute 10 into x -> 10+2=12
I need help please :)
At a sale this week, a suit is being sold for $235.60. This is a 62% discount from the original price.
What is the original price?
Answer:
$620
Step-by-step explanation:
（1-62%）X=235.6
X=235.6/38%
X=620
The original price is $620
40 oz < 3lb
Is it true or false ?
Answer:
True
Step-by-step explanation:
40oz = 2.5 lb
10 = 0.625
