Answer:
4
Step-by-step explanation:
1, 4, 16,64,
1*4=4
4*4=16
16*4=64
The common ratio is what we are multiplying by
We are multiplying by 4 so the common ratio is 4
− 4 y − 3 + 3 y = 8 − 2 y − 15
Answer:
y= -4
Step-by-step explanation:
simplify both sides of the equasion
add 2y to both sides
add three to both sides
and your answer is y= -4
Solve the inequality.
-2(w+4) +9<-11
Answer:
w>6
Step-by-step explanation:
1.) you will distribute the -2 into the parentheses.
-2w-8+9<-11
2.) combine like terms
-2w+1<-11
3.) isolate the variable
-2w<-12
4.) continue to isolate the variable
w>6
(the sign will flip because if the negative devision)
Suppose that 12% of test scores for the unit 1 test were above 85 and 8% were below 70. Assuming a normal
distribution, what is the mean and standard deviation of the distribution of test scores?
Answer:
Mean = 78.2
Standard deviation = 5.8
Step-by-step explanation:
Mathematically z-score;
= (x-mean)/SD
From the question;
12% of test scores were above 85
Thus;
P( x > 85) = 12%
P(x > 85) = 0.12
Now let’s get the z-score that has a probability of 0.12
This can be obtained from the standard normal distribution table and it is = 1.175
Thus;
1.175 = (85 - mean)/SD
let’s call the mean a and the SD b
1.175 = (85-a)/b
1.175b = 85 - a
a = 85 - 1.175b ••••••••(i)
Secondly 8% of scores were below 70
Let’s find the z-score corresponding to this proportion;
We use the standard normal distribution table as usual;
P( x < 70) = 0.08
z-score = -1.405
Thus;
-1.405 =( 70-a)/b
-1.405b = 70-a
a = 70 + 1.405b ••••••(ii)
Equate the two a
70 + 1.405b = 85 - 1.175b
85 -70 = 1.405b + 1.175b
15 = 2.58b
b = 15/2.58
b = 5.81
a = 70 + 1.405b
a = 70 + 1.405(5.81)
a = 78.16
So mean = 78.2 and Standard deviation is 5.8
The mean temperature for the first 7 days in January was 1 °C.
The temperature on the 8th day was 7 °C.
What is the mean temperature for the first 8 days in January?
Find the unit rate. $7.96 for 4 pounds
Answer:
$1.99 per lb
Step-by-step explanation:
Take the dollar amount and divide by the number of pounds
$7.96 / 4 lbs
$1.99 per lb
Simplify.
√3(√6+√15)
a. √32+9√5
b. 3√7
c. 3√2+3√5
d. 2√3+3√5
Answer:
c
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
Help!!!!!!!!!!!!!!!!!!!!
In their last game, the New England Patriots scored 9 points in the first half. In the second half, they scored three less than two times the points in the first half. What is the ratio of the points scored in the second half to the total number of points scored? Give your ratio using a colon.
Answer:
In the first half, they scored 9 points.
in the second half, they scored:
-3 + 2*9 = 18 - 3 = 15 points.
The total number of points scored is 9 + 15 = 24 points.
Now we want to know:
"What is the ratio of the points scored in the second half to the total number of points scored?"
The ratio between two numbers a and b is written as:
a:b
In this case, the ratio will be:
15:24
But we should simplify this ratio, we can divide both sides by the same number and the ratio will remain unchanged.
As both numbers are multiples of 3, we can divide both sides by 3.
15/3 = 5.
24/3 = 8
Then:
15:24 = 5:8
The ratio is 5:8
Which is the most reasonable estimate for 30% of 72?
a. 7
b. 14
c. 21
d. 28
Answer:
Step-by-step explanation:
72 × 30/100 = 21.6
So the nearest answer is 21 (B)
Hello, just checking my work. First right answer will be brainiest
Irwin rode his bicycle from one end of a trail to another and back at a speed of 20 miles per hour. If the trail is 4 miles long, for how many hours was Irwin riding?
0.2 hours
0.4 hours
2.5 hours
5.0 hours
Answer:
0.4
Step-by-step explanation:
how many minutes are in 4 miles
Answer:
I believe it’s C. 2.5
Step-by-step explanation:
Can someone please help me with this one?:
The point C (-3, -1) is rotated 180° clockwise about the origin.
What are the coordinates of the resulting point, C'?
A (3, 1)
B (-3, 1)
0 (-1, -3)
D (3, -1)
A cab driver charges a flat fee of 10$ per ride. The driver also charges $2.50 per mile driven. Write an expression to represent the total cost of a cab that drives x number of miles
A: 2.50x-10
B: 10x-2.50
C: 2.50x+10
D: 10x +2.50
Answer:
C. 2.50x+10
Step-by-step explanation:
if x represents the miles driven and it is 2.50 per mile driven then 2.50x is the first part of the equation. If there is a fee of 10 then that adds to the miles driven
If the equation is solved, which is true? (Round to the nearest tenth as needed)
A.
If 3+ n = 13, then n = 16
B
If 3 + n = 13, then n = 10.0
=
С
If 3 - n = 13, then n = 16.0
D
If n+ 3 = 13, then n = 4.33333...
E
I don't know yet
Answer:
B
If 3+n=13,then n=10.0
The image shows parallel lines cut by a transversal. The expressions represent unknown angle measurements. What is the value of x?
a)5
b)7
c)9
d)11
What is the mass of a truck if it produces a force of 14,000N while accelerating at a rate Of 5 m/s?
Step-by-step explanation:
Correct Question:-What is the mass of a truck if it produces a force of 14,000N while accelerating at a rate Of 5 m/s²?
Answer:-Force = Mass × Acceleration
14000 = mass ×5
Mass = 14000/5
Mass = 2800 Kg.
Hope it helps ☃️
1
A snail travels
of an inch in an hour.
How long will it take to travel 5 inches?
Answer:
5 hours
Step-by-step explanation:
1in per hour ×5=5 hours
Answer: 5 inches
Step-by-step explanation:
If the snail travels an inch {1} an hour the five inches should be 5 hours
[tex]Please\;write\;an\;equation\;for\;the\;following...\\\\1...\;(2, 2), slope = 9/2\\2...\:(3, 2), slope = 2/3\\\\Any\;answers\;breaking\;guidelines\;will\;be\;deleted![/tex]
Answer:
y = 9/2x - 7y = 2/3xStep-by-step explanation:
Slope intercept form
y = mx + b1. Slope = 9/2, point (2,2)
2 = 9/2*2 + b ⇒ b = 2 - 9 ⇒ b = -7y = 9/2x - 72. Slope = 2/3, point (3,2)
2 = 2/3*3 + b ⇒ b = 2 - 2 = 0y = 2/3xAnswer:
y = 9/2x - 7
y = 2/3x
Step-by-step explanation:
Question 1:
y = mx + b
y = 9/2x + b
2 = 9/2(2) + b
2 = 9 + b
-7 = b
y = 9/2x - 7
Question 2:
y = mx + b
y = 2/3x b
2 = 2/3(3) + b
2 = 2 + b
0 = b
y = 2/3x
Best of Luck!
Simplify 16...please help
Awarding BRAINLIEST! Please help!!
What is the slope of the line that passes through the points (-2, 5) and (1, 4)?
A. -3
B. -1
C. -1/3
D. 1/3
C. -1/3 is the answer
-2x-10=15 please show your work
Answer:
x=-12.5
Step-by-step explanation:
-2x-10=15
-2x=25
2x=-25
x=-12.5
Complete the equation for the standard form of the line that has an x-intercept of –4 and a y-intercept of 3. I asked this before but I still didn't get the answer that I wanted. :(
Answer: 3x - 4y = -12
Step-by-step explanation:
Intercept form is x/a + y/b = 1, where a is the x-intercept and b is the y-intercept. From the question we have:
x-intercept = -4 (a = -4)
y-intercept = 3 (b = 3)
So we can plug this into the intercept form equation:
x/a + y/b = 1
x/-4 + y/3 = 1
(The LCM of -4 and 3 is -4x3 = -12, so we can multiply both sides of the equation by -12 to get rid of the denominators)
-12x/-4 + -12y/3 = -12 (Cancelling)
3x + (-4y) = -12
3x - 4y = -12
What is the lowest value of the range of the function shown on the graph?
Answer:
-2
Step-by-step explanation:
Jack rolls a fair six-sided dice. For each pair of
events below, decide whether the events are
mutually exclusive. If the events are not mutually
exclusive, give an example to show why.
Pair A:
Pair B:
Pair C:
Rolling an even number
Rolling a prime number
Rolling an even number
Rolling an odd number
Rolling an even number
Rolling a number smaller than 3
Answer:
Step-by-step explanation:
why no one doing this please filli in all the blanks!!!!!!!!????
Answer:
Step-by-step explanation:
first off he took the photo at -20 feet below sea level
expression colud be -11+8+-13
and the answer for the expression would be -20 i do hope this helps
Trevor is a car salesman.
He bought a car for £5000
Currently he is holding a sale with 35% off the price of all cars.
Trevor wants to sell the car so that he makes a 10% pro\it on the price he paid.
How much should Trevor advertise the car for?
Answer:
£3575
Step-by-step explanation:
If Trevor bought the car for £5000, he wants to make a 10% profit on it.
His profit will be 10% of £5000 which is (10/100) x 5000 = £500.
So, his total cost for the car and profit will be £5000 + £500 = £5500.
Since Trevor is holding a sale, he is offering a 35% discount on the car. Therefore, the discounted price of the car will be:
Discount = 35/100 x £5500 = £1925
The price at which Trevor should advertise the car is the original price minus the discount:
Advertised price = £5500 - £1925 = £3575
Therefore, Trevor should advertise the car for £3575.
Which of the following is/are true about the hyperbola z² - y² = 3? The intercepts of the hyperbola are (0, ±√/3). None of these options are correct. The intercepts of the hyperbola are (±√√3, 0). The foci (focus points) of the hyperbola are (0, +√/6). The oblique asymptotes are y = ±x. The foci (focus points) of the hyperbola are (±√6,0). 2 points Consider the graph Its parametric form is given by? r = (2 tan 0,4 sec 0) None of these options are correct. T = (4 sin 0, 2 cos 0) r = (2 sec 0, 4 tan 0) r = (4 tan 0,2 sec ) y² 16 sin W
For the hyperbola z² - y² = 3, the following statements are true: The intercepts of the hyperbola are (±√√3, 0). The foci (focus points) of the hyperbola are (±√6,0). The oblique asymptotes are y = ±x.
The given hyperbola equation z² - y² = 3 can be analyzed to determine its properties.
1. The intercepts of the hyperbola are the points where it intersects the coordinate axes. For this hyperbola, the x-intercepts are (±√√3, 0), where z = 0 and y = 0.
2. The foci (focus points) of a hyperbola are the fixed points inside the curve that determine its shape. For this hyperbola, the foci are located at (±√6,0).
3. Oblique asymptotes are lines that the hyperbola approaches as the distance from the origin increases. For this hyperbola, the oblique asymptotes are y = ±x.
Therefore, among the given options, the statements that are true for the hyperbola z² - y² = 3 are: The intercepts of the hyperbola are (±√√3, 0), the foci (focus points) are (±√6,0), and the oblique asymptotes are y = ±x.
Learn more about hyperbola here :
https://brainly.com/question/19989302
#SPJ11
Im thinking of a number 1-10. first one to get it right gets brainliest!
Answer:
2
Step-by-step explanation:
s(A)=4
What does “s” represent here?
Answer:
"s" is the name of the function.
Step-by-step explanation:
We are dealing with a function.
"s" is the name of the function. We typically use "f" to represent the function but using other letters is fine too.
(A) is the domain or input value for the function that we solve for. Since we are given A, that will be what a equals in the function.
4 is the range or output value of the value. Since we are given "4", the range is 4.
Best of Luck!
PLEASE HELP THIS IS URGENT I WILL MARK U THE BRAINLIEST PLS HELP!!!!!
In a sale, normal prices are reduced by 20%.
Andrew bought a saddle for his horse in the sale.
The sale price of the saddle was £220.
Calculate the normal price of the saddle.
Answer:
the normal rice of saddle is £275
Step-by-step explanation:
normal prices are reduced by 20% to get sale price
this can be shown that
normal price = 100%
and sale price is 80% of normal price (100%-20%)
therefore we can use cross multiplication
% amount( £)
80 : 220
100 : x
80x = 22000
x = 22000/80
x = 275
the normal rice of saddle is £275
hey, can someone answer this please?and if you're reading this, you matter, <3
Answer:
you matter too! i hope you and your fam are well, and happy! god bless
Step-by-step explanation:
Answer:
aaawwwwww
Step-by-step explanation:
um
