Answer:
-5
Step-by-step explanation:
-7 +2 = -5
Answer:
-5
Step-by-step explanation:
Because when a number is a negative and you need to add, you subtract instead.
Hope this helps. Plz give brainliest.
In one region, the September energy consumption levels for single-family homes are normally distributed with a mean of 1050 kWh and a standard deviation of 218 kWh. For a randomly selected home, find the probability that the September energy consumption level is between 1100 kWh and 1225 kWh.
a. 0.1971
b. 0.3791
c. 0.2881
d. 0.0910
e. 0.8029
Answer:
a. 0.1971
Step-by-step explanation:
Z score is used to measure by how many standard deviations the raw score is above or below the mean. It is given by the formula:
[tex]z=\frac{x-\mu}{\sigma}\\ \\Where\ \mu=mean, x=raw\ score, \sigma=standard\ deviation[/tex]
Given that:
μ = 1050 kWh, σ = 218 kWh
For x = 1100 kWh
[tex]z=\frac{x-\mu}{\sigma}=\frac{1100-1050}{218} =0.23[/tex]
For x = 1225 kWh
[tex]z=\frac{x-\mu}{\sigma}=\frac{1225-1050}{218} =0.80[/tex]
From the normal distribution table, P(1100 < x < 1225) = P(0.23 < z < 0.8) = P(z < 0.8) - P(z < 0.23) = 0.7881 - 0.5910 = 0.1971
Expression equivalent to 96+60
Answer:
60+96
156
Step-by-step explanation:
Which statement is true regarding the graphed functions?
On a coordinate plane, a red curved line with an upward arc, labeled g of x, crosses the x-axis at (negative 2, 0), and the y-axis at (0, 4). A blue curved line with an upward arc, labeled f of x, crosses the y-axis at (0, 4) and the x-axis at (2, 0).
Answer:
B
Step-by-step explanation:
I take p a p algebra
Answer:
f(0)=g(0)
Step-by-step explanation:
2020 Edg.
Show all you work plzz
Answer:
[tex]-16+40k[/tex]
Step-by-step explanation:
[tex]8\left(-2+5k\right)[/tex]
Use the distributive law: [tex]a(b+c)=ab+ac[/tex]
[tex]8\times\left(-2\right)+8\times5k[/tex]
[tex]-16+40k[/tex]
The psychology club is having a self-proclaimed psychic come to their campus fund-raising event to demonstrate his abilities. He charges $200 for these events, and the club is charging $1.50 for tickets with a chance to have the psychic read the ticket holder’s mind. Let x represent the number of tickets sold and y represent money. Fill in the items below for the linear model.
g(x) =3x+5, h(x)=3x-4 find g(h(n))
What is the slope of the line on the graph?
Answer:
[tex]m=\frac{1}{2}[/tex]
Step-by-step explanation:
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
Step 1: Find 2 points
(0, 2) y-int
(-4, 0) x-int
Step 2: Plug into slope formula to find slope m
[tex]m=\frac{2-0}{0-(-4)}[/tex]
[tex]m=\frac{2}{0+4}[/tex]
[tex]m=\frac{2}{4}[/tex]
[tex]m=\frac{1}{2}[/tex]
Keshav write the multiples of 7 on his paper, but his sister accidentally erased some of them. Determine what multiple is missing. 1 , 14, 21 , 28, ____, 42
Answer:
35
Step-by-step explanation:
John's extremely generous mother gave him $150 to spend on new school clothes. Shirts cost $15 each and a pair of pants cost $25. If John spent all $150 and bought 5 shirts, how many pairs of pants did he buy?
Answer: 3 pairs of pants
Step-by-step explanation:
Answer: he can still buy 3 pairs of pants
Step-by-step explanation: 15x5=75
75 + 75 = 150
he can buy 5 shirts
and 3 pairs of pants
PLEASE HELP!
What percent of the circle is shaded?
Can you also explain to me please?
Answer:
75%
Step-by-step explanation:
Look at it this way since there is 8 what u could do is 1/4 so 2 of them are 25% 4 of them are 50% 6 of them are 75% and all 8 are 100%
Answer:
75%
Step-by-step explanation:
The circle is divided into 8 parts and 6 of those are shaded.
so as a fraction it would be 6/8
simplified it would be 3/4
percent is out of 100 so you have to make the denominator as 100
25 x 4 (the denominator of 3/4) is 100
25 x 3 ( the numerator of 3/4) is 75 you have to multiply both the numerator and denominator by the same number.
now you have 75/100
which is 75 percent
Hope this helps :)
Explain your steps to solve 3x +4/+2 = 29.
Answer:
X=18
Step-by-step explanation:
3x+4/2 = 29
Multiply both sides by 2 :
2(3x+4)/2 = 29*2
Simplify :
3x+4= 58
Subtract 4 from both sides :
3x + 4 - 4 = 58 - 4
Simplify :
3x = 54
Divide both sides by 3:
3x / 3 = 54 /3
Simplify :
X = 18
Hope it Helps :) !!!!
Ela
2
A lake covers a surface area of about 30,000 square miles.
How can you show the estimated area of the lake as a whole number multiplied by a power of ten?
Part 1 out of 4
What are you asked to find?
You need to show
as a whole number multiplied by a power of ten.
✓ Check
Next
Loop
Answer: 3 × 10⁴ miles²
Step-by-step explanation:
Given that:
Estimated Surface area of Lake = 30,000 square miles
Expressing the estimated area as a whole number multiplied by a power of ten
Hence, we are required to express the surface area in standard form:
30,000 miles ² in standard format:
30,000 is equivalent to (3 × 10,000)
3 is a whole number
10,000 = (10 * 10 * 10 * 10)= 4 th power of 10
10,000 = (10 * 10 * 10 * 10) = 10⁴
Hence,
3 × (10 * 10 * 10 * 10) = 3 × 10⁴ miles²
PLSSS HELP , ILL MARK BRAINLIST !!! HAVE TO GET IT RIGHT
Answer:
[tex]23[/tex]
Step-by-step explanation:
[tex]2m+n=2*m+n[/tex]
Plug in the values accordingly:
[tex]2*7+9=14+9=23[/tex]
Molly took part in a math quiz and scored 55 points on 30 questions. Of the questions, there were 3-point word problems, 2-point calculation questions, and 1-point multiple-choice questions. She answered 5 more 2-point questions than 1-point questions correctly. Find how many of each type of question she answered correctly.
Answer:
[tex]3\ point\ word = 5[/tex]
[tex]2\ point\ word = 15[/tex]
[tex]1\ point\ word = 10[/tex]
Step-by-step explanation:
Given
Represent
3-point word with T;
2-point with U and
1-point with V
[tex]U = 5 + V[/tex] --- (1)
If total questions is 30, then
[tex]T + U + V = 30[/tex] --- (2)
If total points is 55, then
[tex]3T + 2U + V = 55[/tex] --- (3)
Substitute 5 + V for U in (2) and (3)
[tex]T + U + V = 30[/tex] --- (2)
[tex]T + 5 + V + V = 30[/tex]
[tex]T + 5 + 2V = 30[/tex]
[tex]T + 2V = 25[/tex] ---- (4)
[tex]3T + 2U + V = 55[/tex] --- (3)
[tex]3T + 2(5 + V) + V = 55[/tex]
[tex]3T + 10 + 2V + V = 55[/tex]
[tex]3T + 10 + 3V = 55[/tex]
[tex]3T + 3V = 55 - 10[/tex]
[tex]3T + 3V = 45[/tex]
Divide through by 3
[tex]T + V = 15[/tex] ---- (5)
Subtract (5) from (4)
[tex](T + 2V = 25 )- (T + V = 15)[/tex]
[tex]T - T + 2V - V = 25 - 15[/tex]
[tex]V = 10[/tex]
Recall that:
[tex]U = 5 + V[/tex]
[tex]U = 5 + 10[/tex]
[tex]U = 15[/tex]
Substitute 10 for V in (5)
[tex]T + V = 15[/tex]
[tex]T + 10 = 15[/tex]
[tex]T = 5[/tex]
Endpoint: (0, 0), midpoint: (1,7)
Answer:
Step-by-step explanation:
(x + 0)/2 = 1
x + 0 = 2
x = 2
(y + 0)/2= 7
y + 0 = 14
y = 14
(2, 14)
1. Write and solve an expression
for the following situation.
"9 less than the
product of 5 and 7"
Answer:
9<(5+7). the answer is 12
Step-by-step explanation:
hope it helps : )
I need help with this
Steven Starr has an idea for a desert he is preparing to sell via food truck for restaurant week- grilled bananas with Belgian chocolate ganache. The bananas go through a 4-step process consisting of pealing, filling, grilling, and the last 2 steps are performed simultaneously- splashing and wrapping. Pealing takes 1 minute, filling takes 2 minutes and grilling takes 5 minutes. Splashing takes 3 minute and wrapping takes 3 minutes. a. The bottleneck of the process is _____, with an hourly capacity of _____.
Answer:
a) grilling
b) 12 grilling process per hour
Step-by-step explanation:
the bottleneck in this process is grilling, which slows down production by taking a considerable amount of time.
Grilling takes 5 minutes, which is the longest of any other stage of process
In one hour there are 60 minutes
The hourly rate of grilling is therefore 60/5 = 12 grilling process per hour
COEFFICIENT IN THE TERM 20 IS ?
Felipe made sand art bottles to sell at his school's craft fair. He wanted to use 9 different colors of sand. So, he bought 1 pound of each color. Then, he filled as many 6-ounce bottles as he could. How many sand art bottles did Felipe make?
Answer: Felipe made 24 sand art bottles.
Step-by-step explanation:
Given: Total different colors of sand = 9
Weight of each color sand = 1 pound
Then, the weight of all 9 colors would be 9 × 1 = 9 pounds
Since 1 pound = 16 ounces
Then, 9 pounds = 9 × 16 = 144 ounces
capacity of each bottle = 6 ounce
Then, the number of bottles required = ( 144 ounces) ÷ 6
= 24
Hence, Felipe made 24 sand art bottles.
Answer:
24 art bottles
Step-by-step explanation:
Find the period of the function y = 2∕3 cos(4∕7x) + 2
Answer:
7π/2
Step-by-step explanation:
The period is the value of x that makes the cosine argument be 2π:
4/7x = 2π
x = (7/4)(2π) = 7π/2 . . . the period
Which of the following is correct? Multiple Choice When the sample size increases, both α and β may decrease. Type II error can only occur when you reject H0. Type I error can only occur if you fail to reject H0. The level of significance is the probability of Type II error.
Answer:
(A) When the sample size increases, both α and β may decrease.
Step-by-step explanation:
Which of the following is correct?
(A) This option is right.
When a sample's size increases, the values for alpha and beta may decrease; if and only if sample size is the denominator in the slope equation (in each case) and the numerator stays the same (that is, ceteris paribus; all other things being equal). The larger the denominator, the smaller the slope value for alpha and beta.
(B) This option is wrong
Type 2 error can only occur when you fail to reject a true H0
(C) This option is wrong
Type 1 error can only occur if or when you don't reject a false H0
(D) This option is wrong
The level of significance is the probability of a Type 1 error, not the probability of a Type 2 error.
use words to describe what a variable is
Answer: :) If u in college I have to know this already
Step-by-step explanation: :)
Survey of Ages of Participants + 5 15 25 35 45 55 65 75 85 What is the median?
In the diagram what is the measure of angle WRS
Answer:it’s 25
Step-by-step explanation:
Why not
A 2-column table with 5 rows titled Length Conversion. Column 1 is labeled Inches, x with entries 2, 4, 7, 10, 13. Column 2 is labeled Centimeters, y with entries 5.08, 10.16, 17.78, 25.4, 33.02. What is the range of the relation of centimeters as a function of inches? {5.08, 10.16, 17.78, 25.4, 33.02} all positive integers x greater-than-or-equal-to 0 y greater-than-or-equal-to 0
Answer:
d
Step-by-step explanation:
The range of the relation of centimeters as a function of inches y ≥0.
What is Range of Function?A function's range includes all conceivable values for y. Y = f(x) is the formula to determine a function's range. It is only a function in a relation if each x value has exactly one y value.
Given:
Column 1 Column 2
2 5.08
4 10.16
7 17.78
10 25.4
13 33.02
As, we know the range is the output values.
So, range is {5.08, 10.16, 17.78, 25.4, 33.02}
Thus, the range is ≥ 0.
Hence, the range of the y ≥0.
Learn more about Range of the function here:
https://brainly.com/question/21027387
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A jacket is on sale for $52 after a 35% discount. What is the original price?
Answer:
The final price is $33.80.You saved $18.20.
Step-by-step explanation:
Answer:
The original price was $80.
Step-by-step explanation:
The original price is x.
x is the full original price, so it is 100% of the original price.
The sale is 35%, so we subtract 35% from 100%.
100% - 35% = 65%
Since the discount was 35%, then the sale price is only 65% of the original price.
65% of the original price is $52
65% * x = 52
0.65x = 52
x = 52/0.65
x = 80
Answer: The original price was $80.
robert has a piece of rope 12 1/2 feet long. he cut rope into pieces that are 1 1/4 feet long. How many of the shorter pieces will he have?
Answer:
divide 25.5 by 6
or change them to fractions
51/2 divided by 6 = 51/2 x 1/6 = 51/12 = 4 3/12 = 4 1/2 feet each
Step-by-step explanation:
Answer:
He will have 10 shorter pieces
To find this, divide 12.5 from 1.25
To check your answer, multiply the answer, 10, by 1.25 and you should get 12.5.
Hope this helped
How many degrees in 2/3 of a circle
Answer:
240 degrees
Step-by-step explanation:
What is the answer to 54<45+3
Answer:
54<48
Step-by-step explanation:
If you add 45+3, you get 45.
Hope this helped.
