Answer:
Xavier did not get an A for the year.
Step-by-step explanation:
We solve this question using z score formula
= z = (x-μ)/σ, where
x is the raw score = ?
μ is the population mean = 85
σ is the population standard deviation = 5
z = 1.8
Hence
1.8 = x - 85/5
Cross Multiply
1.8 × 5 = x - .5
9 = x - 85
Collect like terms
9 + 85 = x
x = 94
Xavier scored 94.
He needs at least 95 to get an A.
Therefore, we can conclude that Xavier did not get an A for the year.
Please help me its an easy question and please show steps (will give brainiest)
Which function is best represented by this graph?
A. y = 1/2x + 6
B. y = −2x + 3
C. y = 2x + 6
D. y = −1/2x + 3
Answer:
d
Step-by-step explanation:
not a bc it has to be negative
not c bc its has to be negative
not b bc the slope is -1/2
IT'S D
Answer:
D
Step-by-step explanation:
from the picture, we know that the slope is negative to begin, since the line is going on a downward direction from left to right. this eliminated A and C instantly.
Now we also can see the graph crossed at 3 for the y intercept, which is another reason to eliminate A and C.
we must then find the show of the line.
let us use to point (0,3) since this is the y intercept and (6,0) since this is the x intercept. to find the slope, m, at must use the equation
[tex]m = \frac{y2 - y1}{x2 - x1} [/tex]
so, let's label (0,3) as point 1 and (6,0) as point two. then,
x1 = 0
y1= 3
and
x2= 6
y2=0
Now we just plug in and simplify.
[tex] m = \frac{0 - 3}{6 - 0} = \frac{ - 3}{6} = - \frac{1}{2} [/tex]
we now have our slope and y intercept, so we can plug them into our equation
[tex]y = mx + b[/tex]
where m is the slope and b is the y intercept.
our equation is thus
[tex]y = - \frac{1}{2} x + 3[/tex]
so, the answer is D
Determine the slope
Answer:
1/3
Step-by-step explanation:
We use the formula y2-y1/x2-x1. The two points that I would use are (3,-1) and (-3,-3). This means that the equation will be -3--1/-3-3. This is equal to -2/-6. This is also equal to 1/3. Therefore, the slope is 1/3.
If this helps please mark as brainleist
HELPPPPP FAST!!!
Find the volume, round your answer to the nearest tenth.
9 yd
7 yd
Answer:16
Step-by-step explanation:
PLEAAAAAAASEE HEEEEELP
Answer:
x=6
Step-by-step explanation:
x+54+5x=90
6x+54=90
6x=36
x=6
Answer:
x=6
Step-by-step explanation:
So, lets go over what we know.
Angle 5x and angle x+54 make up 90 degrees.
We know its 90 degrees since there is a square like symbol on the side of the line.
To sovle for x, we must add the two angles together. This will make them equivelent to 90 degrees.
So:
5x+x+54=90
=
6x+54
Now that we combined our two angles, we can solve it like a normal equation:
6x+54=90
subtract 54 from both sides to get 6x alone:
6x=36
Now divide both sides by 6 so x is alone:
x=6
So now we know that x=6.
If you wan to check your answer, just look at the orginal graph, plug in 8 for x, and see if the two angles add up to 90:
Angle 5x:
5*6
=
30
Angle x+54
6+54
=
60
Add the two angles together:
30+60
=
90
So we have checked and the answer is still correct!
Hope this helps! :D
Six consecutive odd numbers sum up to
36, find the numbers
Answer:
1+3+5+7+9+11
Step-by-step explanation:
True or False: 56 students go to see a play in a theater. The theater has 7 seats in each row. 7 rows of seats are needed to fit all of the students. Group of answer choices True False
Answer:
False
8 rows of seats are needed to fit all students
Step-by-step explanation:
Total students at the theater = 56
Number of seats per row = 7
Number of rows = 7
Total seats in the theater = Number of seats per row * Number of rows
= 7 * 7
= 49 seats
Rows of seats needed to fit all of the students is not 7 because the students are more than the number of seats in the theater.
Therefore,
8 rows of seats are needed to fit all students
Total seats in the theater = Number of seats per row * Number of rows
= 7 * 8
= 56 seats
Un túnel se construye de manera que el claro sea un rectángulo de ancho X largo 2X. El concreto para sostenerlo en la parte de arriba tiene un espesor de 2M y a los lados un espesor de 1M. La superficie de la sección transversal del concreto es de 62 M2
Answer:
bfghfghhghsgssfhfgggggggggggStep-by-step explanation:
hghgsrhgtgthtrh
What are the coordinates of A' B' and C' after the dilation?
Answer:
this is the answer to the question, its 5.6 for sure
Answer:
Hello!
A' is (-4, 0)
B' is (-1, 4)
C' is (-1, -3)
Step-by-step explanation:
Here are the points and a graph showing the dilation in purple
a^-6 = I have no idea please help
Answer: [tex]\frac{1}{a^6}[/tex]
Step-by-step explanation:
When you want to solve something that has a negative exponent, turn it into a fraction.
a^-6
= [tex]\frac{1}{a^6}[/tex]
If you knew the value of a, you would solve it completely.
What is the value of X?
Answer:
30
Step-by-step explanation:
(75 points)
Find the frequency for each of these graphs. Write it in the form of
Frequency = 1 / period
Answer:
1st one: 1/12
2nd one: 1/14
3rd one: 1/7
Step-by-step explanation:
Find period (Just count how much it takes for the graph to repeat again)
1st one: 12
2nd one: 14
3rd one: 7
Frequency = 1/period
1st one: 1/12
2nd one: 1/14
3rd one: 1/7
PLZ mark brainliest if you find this helpful
Represent 300 as an exact value in lowest form
0912
o 11/4
O
1073
0 65
Answer:
10√3
Step-by-step explanation:
Square the first number
100*3 is 300
100 is square root of 10
.Write Hindu- Arabic number in roman number
126= .....
Answer:
CXXVI is in roman number
Someone please please help me with those 2
Answer:
29, 7
Step-by-step explanation:
Range is largest num - smallest num
33-26 = 7
Mode is most common number:
29
A cake has circumference of 2517 25 1 7 inches. What is the area of the cake? Use 227 22 7 for π π . Round to the nearest hundredth. AWNSER
Answer:
22in²
Step-by-step explanation:
According to the scenario, computation of the given data are as follows,
Circumference = 25 (1/7)
As we know,
Circumference of a circle = 2πr
By solving this we get
Radius (r) = 4in
Now. we can calculate the area by using following formula,
Area = πr²
By putting the value, we get
Area = (22/7) × 4²
= 22/7 × 16
= 352÷16
Area = 22in²
PLEASE HELP!! WILL GIVE BRAINLIEST FOR FIRST TO SHOW STEPS!
Julie started with 20 pieces of gum and gave away x pieces. Conrad started with 35 pieces of gum and gave away twice as many pieces as Julie did.
How many pieces of gum did Julie give away if they had the same number of pieces of gum left?
A. 18
B. 5
C. 15
D. 8
Answer:
c. 15
Step-by-step explanation:
20 - 15 + 5
35 - 15(2)
35 - 30 = 5
Greg uses a triangular area of his back yard as a garden.If the area if his garden 1.248 square feet,whats the area of the garden?
Answer:
192 ft²
Step-by-step explanation:
Area of rectangular backyard = 1248 ft²
Width of backyard = 52 ft
Length = x
Area of rectangular backyard = Length * width
1248 = x * 52
x = 1248 / 52
x = 24 feets
Hence, x = height of triangular garden
Area of triangle = 1/2 base * height
Area = 1/2 * 16 * 24
Area = 192 ft²
find dy/dx using first principle
x+1/x
Answer:
The derivative of the function is:
[tex]f'(x)=1-\frac{1}{x^{2}}[/tex]
Step-by-step explanation:
The first principle is given by:
[tex]f'(x)=\frac{dy}{dx}=lim_{h\rightarrow 0}\frac{f(x+h)-f(x)}{h}[/tex]
The function here is:
[tex]f(x)=x+\frac{1}{x}[/tex]
Now, using the first principle we have:
[tex]f'(x)=lim_{h\rightarrow 0}\frac{(x+h)+\frac{1}{(x+h)}-x-\frac{1}{x}}{h}[/tex]
[tex]=lim_{h\rightarrow 0}\frac{h+\frac{1}{(x+h)}-\frac{1}{x}}{h}[/tex]
[tex]=lim_{h\rightarrow 0}\frac{h-\frac{h}{x(x+h)}}{h}[/tex]
[tex]=lim_{h\rightarrow 0}\frac{h(1-\frac{1}{x(x+h)})}{h}[/tex]
[tex]=lim_{h\rightarrow 0}1-\frac{1}{x(x+h)}[/tex]
[tex]=1-\frac{1}{x^{2}}[/tex]
Therefore, the derivative of the function is:
[tex]f'(x)=1-\frac{1}{x^{2}}[/tex]
I hope it helps you!
A fitness club charges members an initial fee and a separate monthly membership fee. The equation of the function given models the total fee, f(x), in dollars, that a person pays for x months of membership.
f(x)=30x+25
What does the number 30 represent in this situation?
The number 30 represents that the fitness club charges members a separate monthly membership fee of $30.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables
Let f(x) represent the total fee that a person pays for x months of membership. Hence:
f(x) = 30x + 25
The number 30 represents that the fitness club charges members a separate monthly membership fee of $30.
Find out more on equation at: https://brainly.com/question/2972832
HELP!!!!! PLEASE AND THANK YOU
Answer:
The 3rd one is correct
(7.5 + 3) x 6 - 4)
HELP HELP FIRST PERSON TO ANSWER GETS BRAINLIEST
Answer: you have to divide each side by 8, not 4. If you divide by 4, you get 2x = 1
The correct answer would be 1/2
Brainliest to fastest and correct answer
11. Salt costs 40 cents for every 100 grams. How many grams of salt can be bought with $2?
12. Purple paint is made by mixing 3 parts red paint with 2 parts of blue. How much blue paint is needed when you have 600ml of red?
13. To make 8 pancakes, you need 160 grams of flour. How many grams of flour are needed to make 12 pancakes?
14. In a class there are 5 boys for every 3 girls. There are 15 girls. How many boys are there?
15. Sally and her sister take a walk in the park. For every 5 strides Sally makes, her sister makes 4. When Sally has made 50 strides, how many strides has her sister made?
16. Dave picked some mangoes. He gave his friend 3 for every 5 he kept for himself. If he kept 70 mangoes, how many did he give to his friend?
17. Dana and her sister were on the beach collecting shells. For every 8 shells collected, her sister collected 5. If her sister collected 65, how many did Dana collect?
18. In a factory, for every 12 shirts made. 8 trousers are made. If 200 trousers were made today, how many shirts were made?
19. A music shop advertised for a sale on CD’s. Sam bought 20 CD’s.
a) How many CD’s did he get altogether?
b) If Sam paid $100, what was the cost of 1 CD?
c) Sam’s friend spent $95. How many CD’s did he get in all?
answer:
explanation:
hope it will helps!
PLEASE HELP QUICK
Which of the following equations has a slope of 4 and passes through point (2, 5)?
y = 4x + 2
y = 4x + 5
y = 4x – 3
y = 4x – 8
Answer:
y = 4x – 3
Step-by-step explanation:
West ridge highschool is holding an honor roll banquet. It costs $95 to rent the cafeteria plus $13 for each person attending the banquet. If C
Answer: C(x) = 13x +95
Step-by-step explanation:
Here's the remainder of the question:
If C(x) represents the total cost and x represents the number of people attending the banquet, which equation shows the total cost? A C(x)=95x – 13 B C(x)=13x – 95 C C(x)=95x +13 D C(x)=13x +95
Based on the information given in the question, the total cost will be:
= 95 + 13(x)
= 95 + 13x
Therefore, the correct answer will be C(x)=13x +95
Help
Question 11 of 40
Suppose a normal distribution has a mean of 50 and a standard deviation of
3. What is P(x<_47)?
A. 0.84
B. 0.975
C. 0.025
D. 0.16
SUBMIT
Answer:D
Step-by-step explanation: got it right
In the following equation, what number retresents the y-intercept",
y = - 3x + 8
Someone please help will mark as brainliest
Answer:
A) [tex]\frac{3}{5}[/tex]
Step-by-step explanation:
The graph goes up 3, to the right 5 between the two points, making the slope [tex]\frac{3}{5}[/tex].
5. Evaluate the following problem if x=10
2x - 8
Answer:
14
Step-by-step explanation:
ACQ, (According to the question)
x=10
2x - 8
What we have to do is, we have to substitute the value of x with the equation's x, so,
=> 2* 10 - 8
=> 20 - 8
=> 14
Hope it helps :)
A rectangle has a width, w, equal to 6 less than the length, l. Which expressions represent ways to find the perimeter of the rectangle?
Select ALL that apply.
4 L plus 12
4L−12
2(L−6)+2l
2(6−L)+2l
12+2L+2L
Answer:
4L-12
Step-by-step explanation:
let's assume the length = L
then the width of the rectangle is L - 6
perimeter = 2× (a+b)
where "a" and "b" are the length and the width of the rectangle.
so perimeter = 2× (L + L - 6)
2 × ( 2L - 6)
4L - 12
You roll a six-sided number cube and flip a coin what is the probability of rolling a number greater than 3 and flipping heads? Write your answer as a fraction in simplest form.
Answer:
1/4
Step-by-step explanation:
Possible outcomes from rolling the cube that satisfy the "greater than 3" criterion are {4, 5, 6} out of a total of six possibilities {1, 2, 3, 4, 5, 6}. Thus, the probability of rolling a number greater than 3 is 3/6, or 1/2.
Probability of flipping heads is 1/2.
These are entirely independent events. Thus, the joint probability is (1/2)(1/2), or 1/4.