Answer:
21+8x
Step-by-step explanation:
7(3 – X) + 15x
21-7x+15x
21(-7x+15x)
21+8x
Answer:
-7x+15x+21
Step-by-step explanation:
Is three fourths more than three eights
Answer:
yes
Step-by-step explanation:
not sure how to explain it's kinda hard sorry
Answer:
Yes
Step-by-step explanation:
A bank's loan officer rates applicants for credit. the ratings are normally distributed with a mean of 200 and a standard deviation of 50. if an applicant is randomly selected, find the probability of a rating that is between 200 and 275.
Answer:
0.4332 = 43.32% probability of a rating that is between 200 and 275.
Step-by-step explanation:
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 zscore 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 pvalue, we get the probability that the value of the measure is greater than X.
A bank's loan officer rates applicants for credit. the ratings are normally distributed with a mean of 200 and a standard deviation of 50
This means that [tex]\mu = 200, \sigma = 50[/tex].
Find the probability of a rating that is between 200 and 275.
This is the pvalue of Z when X = 275 subtracted by the pvalue of Z when X = 200. So
X = 275
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{275 - 200}{50}[/tex]
[tex]Z = 1.5[/tex]
[tex]Z = 1.5[/tex] has a pvalue of 0.9332
X = 200
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{200 - 200}{50}[/tex]
[tex]Z = 0[/tex]
[tex]Z = 0[/tex] has a pvalue of 0.5
0.9332 - 0.5 = 0.4332
0.4332 = 43.32% probability of a rating that is between 200 and 275.
What is the remainder of 96÷7
Answer:
13 reminder 7.
Step-by-step explanation:
Multiply (3a+2)(3a-2)
Plz help (x+10)(x+3) expand and simplify
What two numbers multiply together to give you -36 and add together to give you -9
Answer:
-12 and 3
Step-by-step explanation:
-12x3= -36
-12+3= -9
Answer:
-18
Step-by-step explanation:
the ratio of 8 melons to 36 fruits
8/36
= 2/9 after dividing by 4
Please mark as brainliest.
Answer:
Step-by-step explanation:
8:36
4:18:
2:9
What is the area of the triangle shown?
Answer:
you need to show the triangle shown on your math question or we can't answer it
Step-by-step explanation:
If the quadratic parent function is reflected in the y-axis and vertically compressed by a factor of 1⁄2, write an equation to represent the new function.
Answer:
h(x) = 1/2f(-x)Step-by-step explanation:
Let the parent function be:
f(x)Reflection over y-axis:
g(x) → f(-x)Vertical compression by a factor of 1/2:
h(x) → 1/2g(x)Final function in terms of parent function:
h(x) = 1/2f(-x)what is x+ 7 - (x+1)
Answer:
6 bc it is
Step-by-step explanation:
For this exponential function what is the output value (y) when the input value (x) is 0?
Answer:
12
Step-by-step explanation:
[tex]y^0=1\\5^0=1\\12*1=12[/tex]
Find the values of the trigonometric functions of from the information given.
tan() = −5, sin() > 0
sin =
cos() =
csc() =
sec() =
cot() =
Why are you cheating... I will report this to your teacher
School lunches cost PHP 135.50 per week. About how much would 15.5 weeks of lunches cost?
Answer: $2,100.25
Step-by-step explanation:
$135.50 x 15.5 = $2,100.25
Please solve, will mark brainliest
Answer: I'm late but do you still need the answer
Step-by-step explanation:
la suma de las areas de dos cuadrados es 218
218 = 49 + 169 = 7² + 13² 218 = 7² + 13²
You roll two dice 44 times how many times do you expect to roll at least one even die?
Answer:
2
Step-by-step explanation:
6, because there's 3 types of even die and you're rolling it 44 times, or 6 times per number
D
simplity
x3 + y 3
x+y
[tex]\displaystyle\bf\\\frac{x^3+y^3}{x+y}=?\\\\ ~~~~~~~~~~~We~use~the~formula:~~~~x^3+y^3=(x+y)(x^2-xy+y^2)\\\\\frac{x^3+y^3}{x+y}=\frac{(x+y)(x^2-xy+y^2)}{x+y}=\boxed{\bf x^2-xy+y^2}\\\\We~simplified~the~fraction~with~(x + y)[/tex]
Can someone help me pls!!
Answer:
1/1
Step-by-step explanation:
you go up 1 and over 1
Answer:
Answer vary :
-3
Step-by-step explanation:
honestly in my opinion it that. i got it by looking at the middle of the slope wich hits -3.
Given the function: f ( x ) = { 7 x + 9 x < 0 7 x + 18 x ≥ 0 Calculate the values f
(
−
1
)
=
f
(
0
)
=
f
(
2
)
=
Answer:
Step-by-step exjwnfjaW ejgnewjkgn rngjwrgnrwjg
Hayyy im back Yall give me good luck
Answer:
20
Step-by-step explanation:
Answer:
20
Step-by-step explanation:
Substitute the x's for multiplication signs
[tex]5^{2} x(7-3)/5=25x(7-3)/5=25x(4)/5=100/5=20[/tex]
help help pls answer asap
Answer:
Step-by-step explanation:
V-0.12V (first option) if we factor it it becomes
V(1-0.12)=0.88V (last option)
Give an example of a rate that is not a unit rate. Explain your choice
Answer:
A unit rate is a rate that has a denominator of 1. For example the Rate could be 48 kids per 4 classrooms. The unit rate for this would be 12 kids per 1 classroom. The denominator should always be one.
or another examples would be 150 miles/ 6 hours
what is the square root of 64
Answer:
8
Step-by-step explanation:
Answer:
8
Step-by-step explanation:
8x8=64 so √64=8. hope this helps!
Ariel has $181 saved towards the purchase price of a laptop. The laptop she wants to purchase cost $599. Ariel earns $9.50 an hour as a lifeguard. (I have to write an in…
¿*=£×**€×¿¿==£÷€=4÷54
if 1/5 of the length of a pole is 12 feet, what is height of the pole?
Answer:
60 feet
Step-by-step explanation:
if 1/5 is 12 feet of the length of the pole then that means you would have to multiply 12 by 5 to get 60. 1/5 + 1/5 + 1/5 + 1/5 + 1/5 is the height of the pole so you would have to multiply 1/5 (12) by 5 to get the full length of the pole.
Answer:
60ft
Step-by-step explanation:
if 1/5 of the pole is equal to 12ft then to find the total height (length) of the pole you need to multiply by the denominator (base of the fraction) so...
5 x 12 = 60ft
A calf gains weight proportional to the difference between 1200 and its weight, w in pounds and t in years.
a)Assuming the calf weight 75 pounds at birth and doubled its weight in 10 days, solve the differential equation for w, as a function of t
b)If the animal sold when its weight reaches 800 pounds, find the number of days to wait to sell.
c)What is the maximum weight of the animal? Show work that leads to your answer
Josh is downloading a file. The size
of the file is 3,200 KB. It takes 3
minutes to download the first
1,200 KB of the file. If the file
continues downloading at the same
rate, how many more minutes will it
take to finish downloading?
Answer:
5 minutes
Step-by-step explanation:
1200 ÷ 3 = 400 kb per minute
3200 ÷ 400 = 8 kb per minute
8 - 3 = 5 more minutes
The scale on a map is 1 inch = 14 miles. The measurement between two cities on the map is 7 inches. What is the distance between the two cities?
Given:
The scale on a map is 1 inch = 14 miles.
The measurement between two cities on the map is 7 inches.
To find:
The actual distance between the two cities.
Solution:
We have,
1 inch = 14 miles
Multiply both sides by 7.
7×1 inch = 7×14 miles
7 inch = 98 miles
The measurement between two cities on the map is 7 inches and using the given scale, we get 7 inch = 98 miles.
Therefore, actual distance between the two cities is 98 miles.
Use the Distributive Property to determine which of the following statements is equivalent to 5(6 – 2).
In one round of a board game, Chrissy scored 43 points. In the next round, she lost 103 point
How many points did Chrissy have in total after two rounds?
Answer:
-60
Step-by-step explanation:
43 - 103