Answer: 9.3
Step-by-step explanation:
For males in a certain town, the systolic blood pressure is normally distributed with a mean of 120 and a standard deviation of 9. Using the empirical rule, determine the interval of systolic blood pressures that represent the middle 95% of males.
Answer:21
Step-by-step explanation:9+10=12
4n^2-22=27 please show work
Answer:
n = 7/2
Step-by-step explanation:
4n^2-22=27
4n^2 = 27 + 22
4n^2/4 = 49/4
sqrtn^2 = sqrt(49/4)
n = 7/2
PLEASE HELP ME PLEASE WITH THIS ALGEBRA QUESTION!! THANK YOU
I Need help asap!!!!!
Explain whether you think the relationship is proportional or not.
The weight of a stack of standard 8.5x11 copier paper vs. number of sheets of paper.
Answer:
I think the relationship between the weight of a stack of standard 8.5x11 copier paper vs number of sheets of paper is proportional because :
Step-by-step explanation:
Let us assume here, in this situation that each page has the same weight so if i want to find the weight of the complete stack, i will multiply the number of sheets of paper by the weight of a single sheet of paper.
Caleb has filled his 20” x 12” x 9” fish tank 2/3 full before adding his fish. How many cubic inches of water was used to fill the tank?
Answer:
1,440
Step-by-step explanation:
So you find the volume (length times width times height) which would be 2,160 then you multiply by 2/3 which will get you to the amount of water they use to fill the tank which is 1,440 cubic inches. I hope this helps! :)
2. Solve for b in the linear equation
6b - 24 = 3(5b - 2)
Answer: b = −2
Step-by-step explanation:
what are the basics of linear equation
Answer:
The definition of a linear equation is an algebraic equation in which each term has an exponent of one and the graphing of the equation results in a straight line. An example of linear equation is y=mx + b.
Step-by-step explanation:
Answer:
Linear equations are a combination of constants and variables. The standard form of a linear equation in one variable is represented as ax + b = 0 where, a ≠ 0 and x is the variable. ax + by + c = 0, where, a ≠ 0, b ≠ 0 , x and y are the variables.
The polygons are similar. Find the value of x.
Answer:
x = 19.5
Step-by-step explanation:
Given that Polygon HIJK is similar to Polygon PQRS, their corresponding lengths are congruent, also, the the ratio of the sides of HIJK to the corresponding sides of PQRS would be the same.
Thus:
[tex] \frac{HI}{PQ} = \frac{IJ}{QR} [/tex]
HI = 15
PQ = 5
IJ = x
QR = 6.5
Plug in the values
[tex] \frac{15}{5} = \frac{x}{6.5} [/tex]
[tex] 3 = \frac{x}{6.5} [/tex]
Multiply both sides by 6.5
[tex] 3*6.5 = x [/tex]
[tex] 19.5 = x [/tex]
x = 19.5
Can someone help me?
Answer:
$44
Step-by-step explanation:
Answer:
I would say 60$
Step-by-step explanation:
Because if Lin got 100% of her goal which was 40$ that means she got her 40$ dollars and each one is 10$ than Andre probably got 60$ dollars more but I am in 4th Grade so...
a figure that has a vertex at (2,3) has the y-axis as a line of symmetry. Tell the coordinates of another vertex of the figure
Answer:
-2, 3
Step-by-step explanation:
That would mean that the other side (the y axis splitting it) would be the same numbers but different signs. The figure's vertex (2,3) is from the 1 quadrant and the one across the y axis is (-2,3) which is in the second quadrant.
hope this helps!!
Kim's furniture store is offering a 40% discount on all its armchairs. Using a proportion, find the discount of the price of an armchair that originally cost $363.00.
Answer:
217.8 U.S. dollars
Step-by-step explanation:
10+(8-4)~2 DIvied by 2
10
9
1
18
Answer:
18
Step-by-step explanation:
please please help me! all you smart math people please give me a hand
Answer:
Step-by-step explanation:
...;3
A copy machine is set to enlarge an image 160%. If the original image is 3 inches tall, how tall will the enlarged image be?
Answer:
4.8 inches.
Step-by-step explanation:
Given that,
The original image is 3 inches tall.
A copy machine is set to enlarge an image 160%.
We need to find the enlarged image. It can be calculated by taking 160% of 3 as follows :
[tex]x=\dfrac{160}{100}\times 3\\\\=4.8\ \text{inches}[/tex]
So, the enlarged size of the image is 4.8 inches.
Which describes the first step in solving the equation 4x - 7 = -15?
Answer:
Add 7 to both sides
Step-by-step explanation:
You would need to add 7 to both sides to cancel out the 7 on the right side of the equation to get x one step closer to being by itself.
Then you would get 4x = -8.
Next divide by 4 on both sides to get x by itself so do the inverse operation of what 4 was doing to x.
x = -2
In one week, each cat at a cat shelter eats 7 cans of cat food. How many cans of cat food are needed for 7 cats eat in one week? *
the amount of water in a barrel decreased is 9 5/8 pints in 7 weeks
5.51 ÷ 0.20 Find the quotient
Answer:
27.55
Step-by-step explanation:
Answer:
The answer is 27.55.
Identify the slope of y=-4x-5
Answer:
m=-4
Step-by-step explanation:
The formula that you're using is called slope intercept form, (y=mx+b). m equals the slope so the slope would be -4.
Find the distance, in meters, a particle travels in its first 10 seconds of travel, if it moves according to the velocity equation v(t)= 49 - 9.8t (in meters/sec).
Answer:
245
Step-by-step explanation:
Answer: 245 meters
Step-by-step explanation:
Use definite integral to find the position value. Since the derivative of a position function gives you the velocity function, the antiderivative (the integral) should get you the position function from a velocity function. The absolute value is there to prevent any negative values from coming, as can't be a negative distance.
[tex]\int\ {|49-9.8x|} \, dx[/tex] gives you
[tex]4.9*(x-5)*|x-5|[/tex]
Evaluate the function at the limits.
doing so gives 245 meters
5- -5 please someone I can use the help thank you!
Answer:
-10 i think
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
Two negative equal a positive. 5--5 =10
the interest rate for paul's bank account is 1.5% how much simple interest will he earn after 5 years
Answer:
7.5%
Step-by-step explanation:
Maybeeeeee?↖(^ω^)↗
Write the quadratic equation whose roots are -2 and 5, and whose leading coefficient is 1.
(Use the letter x to represent the variable.)
| [= 0
Answer:
[tex]x^2 - 3x -10 = 0[/tex]
Step-by-step explanation:
Given
Roots = -2 and 5
Required
Write the equation
We have that:
x = -2 and x = 5
Simplify further
x + 2 = 0 or x - 5 = 0
Multiply the results of the above
[tex](x + 2)(x - 5) = 0[/tex]
Open brackets
[tex]x^2 + 2x - 5x -10 = 0[/tex]
[tex]x^2 - 3x -10 = 0[/tex]
using the slope formula, find the slope of the line through the points (0,0) and (2,8)
Answer:
Should be 4.
Step-by-step explanation: Here's why.
First off, use the given formula for determining the slope: m=[tex]\frac{y2-y1}{x2-x1}[/tex] . You will need this formula.
Second, label all your points with the right variable. For example,
0 = x1 / 0 = y1 / 2 = x2 / 8 = y2
Once completed, you've set up your problem and now you're ready to solve. Replace the formula with all the numbers. Make sure they're in the right place.
Here's how it should look:
m = [tex]\frac{8-0}{2-0}[/tex]
From here, you will subtract the numerator and the denominator.
m = [tex]\frac{8-0}{2-0}[/tex] = [tex]\frac{8}{2}[/tex]
Be sure to simplify it. When simplified, it goes down to 4.
Good luck! I have attached my work for you so that it's easier to understand.
A 7-by-7 foot rug is shown.
A coin is tossed onto the rug randomly.
Which of these describes the probability
that the coin will land on an area that is
white?
A between 0 and 1/2
B around 1/2 C:between 1/2 and 1 D:greater than 1
Answer:
A Between 0-1/2
Step-by-step explanation:
Because you don't know if the rug is solid white or a checkard rug. But I could be wrong with insufficient evidence of the rug
Help please help please
Answer:
her kids are gonna get diabetes
Step-by-step explanation:
after 1 min 5 cupcakes
after 2 min 10 cupcakes
after 5 min 25 cupcakes
after 17 min 85 cupcakes
your x intercept is gonna be minutes
your y is the amount of cupcakes they eat in those different stretches of time
I'm Stressed Please Help Me Get Unstressed (If That's A Word) :(
Answer whats wrong
Step-by-step explanation:
Please look at the image and help me please
oh shi sorry I wish I could help but I'm stupid
Answer:
hope this helps, I could answer any other question you have :)
The weather outside was very abnormal. The temperature started out at 22°C in the morning and went to -3°C at noon. It stayed at that temperature for six hours and then dropped 4°C. How far below the freezing point (0°C) was the temperature at 6 p.m.? *
Answer:
your answr would be 16c
Step-by-step explanation:
