Answer:
true
Step-by-step explanation:
For a Valentine's Day party at his school, Kenneth is cutting ribbons to tie around boxes of candy. Each box of candy needs 1 2 of a foot of ribbon. Kenneth has 15 feet of ribbon in all. How many boxes of candy can Kenneth tie with a ribbon? Write your answer as a fraction or a whole number. pls i need help
Answer:
30 boxes
Step-by-step explanation:
if that is a 1/2,
then he needs half for each box
he has 15 feet's of ribbon
for every two boxes he needs 1 foot of ribbon
2×15=30
An IQ test is known to have an approximate normal distribution with mean 100 and standard deviation 15. Using the Empirical Rule, about what percentage of test takers will have an IQ score between 85 and 115?
Answer: 68%
Step-by-step explanation:
Empirical rule is basically using a bell curve along with mean and SD to find the center percentage. So take the mean right. 100 if you add 15 which is the SD you get 115 or 34.1% from 100 to 115. If you do the same thing but subtract this time 100-15=85 34.1% again from 85 to 100. So 85 to 115 is 34.1%+34.1%=68%
whats the area of this figure
Answer:
341km2
Step-by-step explanation:
7km*25km=175km2
8km*(11km+6km)=136km2
5km*6km=30km2
175km2+136km2+30km2=341km2
What is the slope of the line that passes through the points (25, 50) and (80, 110)?
PLs HELP I WILL DO ANYTHING
Answer:
12/11
Step-by-step explanation:
the formula to find the slope of a line is:
where is the slope and and are the points where the line passes.
in this case we have that the first point is: (25,50) thus⇒ and
and the second point: (80,110) thus ⇒ and
substituting this values into the formula for the slope:
the slope of the line is 12/11
solve for the right triangle
Answer:
its a little blurry
Step-by-step explanation:
does anyone know how to solove for 2^-2b=8 im super confused and could you please show work(will mark brainlist if you show work) thank you
Answer:
32
since 2^-2 is equal to 0.25, you divide 8 by 0.25 which is 32
Answer b=-2
Step-by-step explanation: Simplify 2^2 to 4 so 4−2b=8 then -2b=4 b=-4/2= b-2
Hope this helped :)
10. Tim bought two copies of the same hardcover book and three
copies of the same paperback book cost $118. Sally bought three of
the hardcover books and two of the paperback books for $137. Find
the cost for each type of book.
Answer:
Let hardcover book be x
Let paperback book be y
2x+3y=$118....Equation 1
3x+2y=$137.... Equation 2
Solve for x and y using simultaneous equation
Using elimination method
2x+3y=118......×3
3x+2y=137......×2
6x+9y=354
6x+4y=274
9y-4y=80
5y=80
y=80÷5=16
substituting y=16 into equation 1
2x+3(16)=118
2x+48=118
2x=70
x=70÷2=35
Therefore hardcover costs $35 each
paperback cover costs $16 each
By selling an article for rs 660 pradeep loses 60 rs at what price he must sell the article to gain 15%
Answer:
828 rs
Step- -step explanation:
pradeep sold the item for 60 rs less than the cost price
The cost price = amount lost + amount it was sold
60 + 660 = 720 rs
To determine the selling price that would yield a gain of 15%,
calculate 15% of 720. Add the amount derived in the above step to 72015/100 x 720 = 108
108 + 720 = 828 rs
what attendance at a basketball game will produce about 125 containers to be recycled
Answer:
About 250 attendance
Step-by-step explanation:
Answer:
The attendance of 250
Step-by-step explanation:
You would see where the 125 containers is on the left is and then you would just go right from there until you hit a meeting point on the straight line which would be at 250
What is y=23x*45-7x+678 equal SHOW YOUR WORK (ONLY ANSWER IF UR AN ACE OR SYDNEETEAL) IF U DON'T KNOW DON'T ANSWER
i am marking brainliest for RIGHT answer
Answer:
x= [tex]\frac{1}{1028} y[/tex]+[tex]\frac{-339}{514}[/tex]
Step-by-step explanation:
let's solve for x.
y=23x(45)−7x+678
step 1: flip the equation.
1028x+678=y
step 2: add -678 to both sides.
1028x+678+−678=y+−678
1028x=y−678
step 3: divide both sides by 1028.
1028x/1028=y-678/1028
x=1/028 y+-339/514
answer- x= [tex]\frac{1}{1028} y[/tex]+[tex]\frac{-339}{514}[/tex]
good luck :)
have a great day !!
please help with this vocab will mark brainliest
Answer:
1. Semicircle
2. Arc Length
3. Minor arc
4. Arc Measure
5. Circumference
6. Diameter
7. Radius
Start time: 11:38 A.M.
Elapsed time: 3 hr 10 min
End time:
An ice cream shop sells 700 cones per day at a price of $4.50. A survey lets the owner know
that for every decrease in price of $0.50, they will be able to sell 100 extra cones. Write an
equation for the Revenue, R, which can be used to determine how much the owners should
charge in order to maximize their revenue.
Answer:
R(x) = (4.50 – 0.50x)(700 + 100x)
___________________________
R(x) is in factored form
Where x is each decrease in the price.
____________________________
Explanation:
R(x) is in the form ax² + bx + c.
This is where the equation is distributed and simplified [Standard form]
The maximum revenue is represented by
R(-b/2a), where the vertex of this relationship is, at x = -b/2a.
Revenue = (Price)(Quantity)
____________________________
R(x) = (4.50 – 0.50x)(700 + 100x) →
-50x² + 100x + 3150 [ax² + bx + c].
x = -b/2a
x = -(100)/2(-50)
x = -100 / -100
x = 100 / 100
x = 1
Therefore R(1) or where the price is decreased by a factor of 1 is the maximum revenue.
R(2) = -50(1)² + 100(1) + 3150
R(2) = -50(1) + 100 + 3150
R(2) = -50 + 100 + 3150
R(2) = 3200.
_______________________________
Thus the best revenue ($3,200) is obtained by decreasing the price once (Price of 4$), with 800 cones.
Without using a calculator, order the following numbers from least to greatest
10, Square root 78 ,9
what is the gcf (greatest common factor) of 9/45
Answer:
9: 1,3,9
45: 1, 3, 5, 9, 15, and 45
Step-by-step explanation:
So the gcf is 9
Answer:
9GCF of 9 and 45 is 9Step-by-step explanation:
The greatest common factor of two numbers x and y is the greatest number that divides x and y leaving the remainder as 0
We can find the GCF of 9 and 45 by the following methods.
GCF of 9 and 45 by Listing the Common Factors Method
GCF of 9 and 45 by Prime Factorization Method
Please answer the following:
Answer:
Conner's work is correct
Jana's work is incorrect
Step-by-step explanation:
Explanation: While Multiplying, exponents of the same bases gets added and not multiplied.
Here, CONNOR HAS ADDED THE EXPONENTS WHEREAS JANA HAS MULTIPLIED THE EXPONENTS.
I would appreciate if you helped
Answer:
A -7
Step-by-step explanation:
the x intercept of a line means where it cross the x coordinate, which is -7
Answer:
a) -7
Step-by-step explanation:
(calculate the dots in the graph)
What is the quotient of 786 divided by 7 show work
Answer:
112.2857143 Or 112 with a remainder of 2
Step-by-step explanation:
1 1 2
7 7 8 6
− 7
0 8
− 7
1 6
− 1 4
2
Need the answer asap !
Note: This question needs practical measurements so I am going to use my clock at home. Otherwise, you can measure the clock at your house and work out.
the diameter of the clock= 30 cm
the radius of the clock= 15 cm
(a) the area of the clock is
[tex]\pi r^{2} = 3.14 \times 15^{2} = 706.5 \: cm^{2} [/tex]
(b) The length of the minute hand covered in one hour is equal to the circumference of the clock.
The circumference of the clock is
[tex]2\pi \times radius = 2 \times 3.14 \times 15 = 94.2 \: cm[/tex]
what valie of x makes the equation true
Answer:
x = 1.25
Step-by-step explanation:
-3x+10 = 5x-8
+3x +3x
10 = 8x - 8
+8 +8
18 = 8x
x = 18/8
x = 1 1/4 = 1.25
[AB] is a diameter of center C(O, 3cm). M is a point on (C) such that MA=MB. D is the symmetric of A with respect to M.
What is the nature of triangle AMB? Justify.
Answer:
Isosceles right triangle.
Step-by-step explanation:
From the given triangle ABM,
AM ≅ MB [Given]
∠AMB is an angle subtended by the diameter AB.
By theorem, angle subtended by a diameter is always 90°.
m∠AMB = 90°
So the given triangle is a right triangle with two equal sides AM and MB.
Therefore, ΔAMB is an isosceles right triangle.
Which box and whisker plot represents this data: 6,7,8,10,18,20,22,25,28,28,30,30?
Answer:
its the last one D
Step-by-step explanation:
The median is 22 and the rest dont have that as the median
Need a bit of help, please. :D
Answer:
c.
Step-by-step explanation:
Please note that the angle A and B are somewhat close to 45deg, so we expect AC and BC to be close in length.
We can drop answer a on that basis.
We can also drop abswer d on the basis that AC is longer than AB there and that cannot be the case in a right triangle.
We can verify that for both b and c the Pythagoras theorem holds, so we need to choose the answer that fits the angles A and B. Te can check the tan of the angle to get the ratio between BC and AC.
tan(48.8deg) ~= 1.1423
1.6/1.4 ~= 1.1429; close enough.
So we choose answer c.
Apply the distributive property to create an equivalent expression. 1/2 ( 10 x + 20 y + 10 z )=
Answer:
5x+10y+5z
Step-by-step explanation:
Distributive Property means you multiply each component by the value you are distributing in this case: (1/2)(10x) + (1/2)(20y) + (1/2)(10z) which will yield 5x+10y+5z
What are the answers to all the questions? Make sure to show your work and the check.
1. 34c = 68
Divide both sides by 34
C = 68/34
C = 2
2. D - 1/2 = 3/4
Add 1/2 to both sides
D = 3/4 + 1/2
D = 1 1/4
3. E + 52.5 = 81
Subtract 52.5 from both sides
E =81-52.5
E = 28.5
4. 18 = f/0.3
Multiply both sides by 0.3
F = 18 x 0.3
F = 5.4
Find the measure of the angle
Answer:
27
Step-by-step explanation:
The triangle shown is an isoceles triangle. This means that there are two congruent base angles and a vertex angle. In this case, angle X and angle Y are the base angles, so we can set up an equation to first find the value of t.
5t - 13 = 3t + 3
2t - 13 = 3 (Subtract 3t from both sides)
2t = 16 (Add 13 to both sides)
t = 8 (Divide both sides by 2)
Now that we have the value of t, we can plug it back in to the expression for angle X to find its measure.
5(8) - 13
40 - 13
27
So, the measure of angle X is 27
Students took a poll that asked whether or not they watch television in the evenings and whether or not they have homework on those same evenings. The two-way table below shows the results of the poll.
Homework No Homework Total
TV 6 12 18
No TV 9 3 12
Total 15 15 30
Calculate the relative frequency of the data to determine which association the two-way table suggests.
A.
Students who watch television in the evenings tend to have homework.
B.
None of the associations listed are correct.
C.
Students who watch television in the evenings tend not to have any homework.
D.
Students who do not watch television in the evenings tend not to have any homework.
Answer:
Students who watch television in the evenings tend not to have any homework is the association suggested by the two-way table.
Step-by-step explanation:
Of the students who watch television, 33% have homework, and 67% do not have homework.
So, students who watch television in the evening tend not to have homework.
Of the students who do not watch television, 75% have homework, and 25% do not have homework.
So, students who do not watch television in the evenings tend to have homework.
I just had the question on Study Island!
Answer:
Students who watch television in the evenings tend not to have any homework.
Step-by-step explanation:
Have a good day :)
What is the length of the missing leg?
Answer:
15 ft
Step-by-step explanation:
Tom spent half of his allowance going to the movies. He washed the family car and earned 7 dollars. What is his weekly allowance if he ended with 15 dollars?
Answer:
Tom's weekly allowance is $16.
Step-by-step explanation:
With the information provided, first you have to subtract the amount he earned washing the family car from the total amount he had to determine the amount he had left from his allowance after going to the movies:
$15-$7=$8
Now, since the statement indicates that tom spent half of his allowance going to the movies, this means that the $8 represents the amount left after going to the movies and it is half of his allowance. So, you have to multiply this amount by 2 to find his weekly allowance:
$8*2=$16
According to this,the answer is that Tom's weekly allowance is $16.
The combined area of a square and a rectangle is 33 square meters. The width of the rectangle is 1 meter more than the length of one side of the square and the length of the rectangle is 3 meters more
than its width.
a) Calculate the dimensions of the rectangle and its perimeter
b) Calculate the dimensions of the square.
Answer:
Step-by-step explanation:
Square is x meters on each side.
Area of square = x²
Width of rectangle = x+1
Length of rectangle = x+4
Area of rectangle = (x+1)(x+4) = x²+5x+4
Combined area = 2x²+5x+4 = 33
2x²+5x-29 = 0
x = [-5+√(5²-4(2)(-29))]/[2(2)] = [-5 +√257]/4