Answer:
17.5
Step-by-step explanation:
First you need to put those numbers in order from least to greatest
second go from each side and count till you get to the middle 17 and 18
third add 17 + 18 = 35
fourth divid by 2 35/2 = 17.5
Hope this helps
I have a test to do today and I need help with it, i don't understand any of it. I will copy and paste it here: IQ scores are normally distributed with a mean of 100 and standard deviation of 15. 1) About what percent of people would have IQ between 85 and 115? 2) About what percent of people would have IQ between 70 and 130? 3) About what percent of people would have IQ above 130? 4) If a school had 255 students, about how many would you expect to have an IQ less than 70? 5) If a school had 1531 students, about how many would you expect to have an IQ greater than 145? 6) If a school has 354 students with an IQ between 100 and 130, about how many students does the whole school have?
Answer:
68%
Step-by-step explanation:
IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. About 68% of individuals have IQ scores in the interval 100 ± 1 ( 15 ) = [ 85 , 115 ] .
70miles in 2 hours unit rate??
Answer:
The answer is 35
Step-by-step explanation:
70 divided by 2 is 35 which would be 35 miles per hour which would be your unit rate.
Find the number, if...
3/8 of it is 24.
What is 4 1/5 multiplied by 3/10
Answer:
1 13/50
Step-by-step explanation:
4 1/5 * 3/10
Change the mixed number to an improper fraction
4 1/5 = (5*4+1)/5 = 21/5
21/5 *3/10
63/50
Changing back to a mixed number
1 13/50
Answer:
1 13/50
Step-by-step explanation:
4⅕ × 3/10
21/5 × 3/10
63/50
1 13/50
PLS HELP WITH THIS QUESTION, ASAP!!
BRAINLIEST AND POINTS
It is 3.15 x 10^-7. You find what 1.05 x 10^-10 is in scientific notation (0.00000000105), times that by 3000, and you end up with 0.000000315 (3.15 x 10^-7 is the answer) :)
Carlos has 4/5 of a tank of fuel in his car. He uses 1/10 of a tank per day.
How many days will his fuel last.
Answer:
8 days.
Step-by-step explanation:
To solve this, we will need to divide fractions to find the amount of days his fuel will last. Remember that when dividing fractions, you need to multiply by the reciprocal of the fraction.
We can do this by:
[tex]\frac{4}{5} * \frac{10}{1} = \frac{40}{5} = 8[/tex]
Therefore, his gas will last 8 days.
Answer:
8
Step-by-step explanation:
number of days=total fuel÷consumption per day
=(4/5)÷(1/10)
=4/5 ×10/1
=8 days
Andre’s father is 8 years more than twice Andre’s age, a. The sum of their ages is 53, how old Andre?
Answer:
15 years old
Step-by-step explanation:
The equation would be
8x + 2x + x = 53
3x = 45
x = 15
Find the volume of the figure
Answer:
You would do length x width x hight so it would be and don’t forget to add the inches
14x17.5x6.4= 1641.5in
what is the solution of this equation? -9+7b=8b-7
Answer:
[tex]b=-2[/tex]
Step-by-step explanation:
[tex]-9+7b=8b-7\\-9+9+7b=8b-7+9 \leftarrow \text {Addition Property of Equality} \\7b+8b=2\\7b-8b+8b-8b=2\leftarrow \text {Subtraction Property of Equality} \\-b=2\\\frac{-b}{-1}=\frac{2}{-1} \leftarrow \text {Division Property of Equality}\\\boxed {b=-2}\\\\\huge\text {The value of 'b' should be -2}[/tex]
Which are ways to decompose the composite figure into simpler shapes that you have area formulas for? Check all that apply.
Answer:
1st and second, unless you have already learned area of trapezoids. If you have, add third
Step-by-step explanation:
Answer: this is ez its
first
second
third
Step-by-step explanation:
You are part of a football team there are three possible outcomes for each match: win, lose or draw. What is the probability of winning the next two matches in a row? □ in □
Answer:
Probabilty of winning the next two matches in a row = 1/9
Step-by-step explanation:
The total number of possible outcome = 3
(Win, lose, draw)
The probability of obtaining a win in a single match = 1/3
The probability of winning in two rows is 1/3² = 1/9
Work out the area of this circle take (pi) to be 3.142 and give your answers to 2 decimal places
Answer:
A = 63.63 m^2
Step-by-step explanation:
The area of a circle is given by
A = pi r^2 where r is the radius
r = d/2 = 9/2 = 4.5
A = 3.142 * (4.5)^2
A =63.6255 m^2
Rounding to 2 decimal places
A = 63.63 m^2
the lines below are parallel. If the green line has a slope of 5, what is the slope of the red line? Enter your answer as an integer or fraction in lowest terms
Answer: 5
Step-by-step explanation: As a rule, parallel lines will always have the same slope. What that means is that if you're told that 2 lines are parallel, the slopes will be exactly the same for both of them.
So if the green line has a slope of 5, the red
line also has a slope of 5.
Please find the surface area of the sphere. Round your answer to the nearest hundredth.
Surface area = [tex]\frac{4}{3} \pi r^{3}[/tex] = [tex]\frac{4}{3}[/tex] x 3.14 x 3 x 3 x 3 = 3.14 x 4 x 3 x 3 = 113.04 yd^2 = approx. 113.1 yd^2
How much tomato juice is needed for a group of 4 people if each person gets ⅓ cup of juice? How much tomato juice is needed if they each get ⅔ cup of juice?
Answer:
1. At 1/3 cup per person, the amount of tomato juice needed is [tex]1\tfrac{1}{3} \ cups[/tex] of tomato juice
2. At 2/3 cup per person, the amount of tomato juice needed is [tex]2\tfrac{2}{3} \ cups[/tex] of tomato juice
Step-by-step explanation:
1. Here we have that each person gets 1/3 cup of juice
Number of people in the group = 4
Amount of tomato juice each person gets = 1/3 cup
Total amount of tomato juice required = 4 × 1/3 = 4/3 cups of tomato juice
In proper fractions, we have;
Total amount of tomato juice required = [tex]1\tfrac{1}{3} \ cups[/tex] of tomato juice.
2. Where we have that;
Amount of tomato juice each person gets = 2/3 cup
Number of people in the group = 4
∴ Total amount of tomato juice required = 4 × 2/3 = 8/3 cups of tomato juice
In proper fractions, we have;
Total amount of tomato juice required = [tex]2\tfrac{2}{3} \ cups[/tex] of tomato juice.
y=3x−5 and y=x−1 Is (2,1) a solution of the system?
Answer:
Yes (2,1) is a solution to the equation
Step-by-step explanation:
Multiple choice please please answer
Answer:
[tex] \purple { \boxed{x = 25 \times \sin \: 39 \degree}}[/tex]
Step-by-step explanation:
[tex] \sin \: 39 \degree = \frac{x}{25} \\ 25 \times \sin \: 39 \degree = x \\ \huge \red{ \boxed{x = 25 \times \sin \: 39 \degree}}[/tex]
what is the solution of this equqtion? -7y -3=11
Answer:
y = -2
Step-by-step explanation:
-7y -3=11
Add 3 to each side
-7y -3+3=11+3
-7y = 14
Divide by -7
-7y/-7 = 14/-7
y = -2
Answer:
Hello,
y = -2
Step-by-step explanation:
-7 y - 3 = 11 ⇔ -7 y - 3 + 3 = 11 + 3 ⇔ -7 y = 14 ⇔ y = 14 / -7 ⇔ y = -2
can you please help me out
Answer:
fwefwfwfewfwefwefwfew
Step-by-step fweexplanation:
erwrwerw
The areas of the squares adjacent to two sides of a right triangle are 32 units^2 2 squared and 32 units^2 Find the length, xxx, of the third side of the triangle.
Answer:
8 units
Step-by-step explanation:
If the area of the squares are 32 units^2, we have that:
Area = Side * Side
Side^2 = 32
Side = sqrt(32) = 5.657 units
So as the squares are adjacent to two sides of the triangle, we have that the triangle has two sides of 5.657 units
As it is a right triangle, we can use the Pythagoras' theorem:
c^2 = a^2 + b^2
c^2 = 5.657^2 + 5.657^2
c^2 = 64
c = 8 units
Answer:
its 8
Step-by-step explanation:
easy geometric shapes question!
Answer:
Cylinder
Step-by-step explanation:
The given geometric shape is of a cylinder.
Answer:
Cylinder
Step-by-step explanation:
The shape will make a cylinder if put together.
Laura has set out 60 m of a kite string which makes an angle of 68° with the ground what is the height of the kite
please help
what’s the sum of 0.25 and 0.6
the answer is 0.85
because 25 plus 60
is 85
the front side of a doghouse is shown in this scale drawing The height of the door in the drawing is 2 inches and the width is 3.5 inches. ... Using the scale given, enter the actual height, in feet, of the doghouse door.
Answer:
So, every one inch in the real dog house would be equal to .4 on the scale drawing.
So,
8/.4= 20
10/.4= 25
So, the dog house is 20 by 25 inches.
The question asked for the area.
20*25= 500
The real dog house has an area of 500 in^2.
I hope this helps!
Step-by-step explanation:
A student is deriving the quadratic formula. Her first two steps are shown.
Step 1: –c = ax2 + bx
Step 2:
Which best explains or justifies Step 2?
Please consider the complete question.
A student is deriving the quadratic formula. Her first two steps are shown. Step 1: [tex]-c = ax^2 + bx[/tex]
Step 2: [tex]-c = a[x^2+\frac{b}{a}x][/tex]
Which best explains or justifies Step 2?
A. division property of equality
B. factoring the binomial
C. completing the square
D. subtraction property of equality
We can see that in step 2 student has factored the right side of equation.
The student factored our a from the right side of equation. To factor our a from right side, student has divide the bx term by a.
We can multiply and divide by same quantity in an equation.
[tex]-c = ax^2+a\cdot \frac{b}{a}x[/tex]
Now we can factor out a as:
[tex]-c = a(x^2+\frac{b}{a}x)[/tex]
Therefore, the 2nd step is known as factoring of binomial and option B is the correct choice.
Answer:
it b factoring a binomial on
Step-by-step explanation:
thats on edge
Michael and Levin ran laps after school to train for the football team. The ratio of the number of laps Michael ran to the number of laps Levin ran was three to four. If Michael ran 12 laps, how many laps did Levin run?
Answer:
Levin ran 16 laps
Step-by-step explanation:
3 to 40
12 to 16
Answer:hi
Step-by-step explanation:
The drop that riders experience on Dr. Doom’s Free Fall can be modeled by the quadratic function, h(t) = −9.8t2−5t + 39
where h is height in meters and t is time in seconds.
Determine the actual solution to the questions below. Use the previous question to assist you.
(a) What is the starting height of the riders?
The starting height of the riders is meters.
(b) According to the function, when will the height of the riders equal 0? Round to the nearest tenths place. *hint: find the solution(s).
The height of the riders will equal 0 at seconds.
Answer:
a) 39 meters
b) t = 1.8 seconds
Step-by-step explanation:
a)
To find the starting height of the riders, we just need to use the value of t = 0 in the equation of h(t):
h(0) = -9.8*0^2 - 5*0 + 39
h(0) = 39 meters
b)
To find when the height will be equal 0, we just need to use the value of h(t) = 0 and then find the value of t:
0 = -9.8*t^2 - 5*t + 39
Delta = b^2 - 4ac = 25 + 4*39*9.8 = 1553.8
sqrt(Delta) = 39.418
t1 = (5 + 39.418)/(-2*9.8) = -2.2662 s (A negative value for the time is not suitable for the problem)
t2 = (5 - 39.418)/(-2*9.8) = 1.756 s
Rounding to nearest tenth, we have t = 1.8 s
A candle maker adds lemon oil to wax to make the lemon-scented candle shown. How many ounces of oil will he need for the candle to have 0.0025 ounces of oil per cubic centimeter of wax.
Answer:
The ounces of oil needed is 5 ounces of oil
Step-by-step explanation:
The first thing to do here is to calculate the volume of the lemon-scented candle given.
Looking at shape the volume can be calculated using the formula L * B * H
where L(length) = 10cm , B(breadth) = 8cm and Height(h) = 25cm
The volume V is thus = 10 * 8 * 25 = 2,000 cm^3
The ounces of oil needed for the candle to have 0.0025 ounces of oil per cm^3 of wax will be = The volume of the lemon-scented candle * 0.0025 ounces of oil per cm^3 of wax
That will be = 0.0025 * 2,000 = 5 ounces
Answer:
5 ounces
Step-by-step explanation:
Did Julio verify the solution?
O No. He substituted 4 and -2 for the wrong
variables.
O No. He did not check the point in the second
equation
O No. He simplified the equation incorrectly.
Yes. He verified that (4, -2) is a solution to the
system of equations.
ASAP
Answer:
No. He did not check the point in the second equation.
Step-by-step explanation:
Took the assignment
Answer:
no he did not check his second equation
Step-by-step explanation:
Just took it hope this helps.
Simply the expression. (7x^2y^3)^4
Answer:
2401x^8y^12
Step-by-step explanation:
You raise 7 to the 4th power which means you multiply 7 four times. Then you multiply the exponents of 2 variables by 4.
