1.A.43 (I actually got 41)
2.?.
Natalie bought a three pack of erasers $1.47. At the same rate how much would a 10 pack of erasers cost?
Answer:
The price for a 10 pack of erasers would cost $4.09
Step-by-step explanation:
1.47 ÷ 3 = 0.49
0.49 × 10 = 4.9
Answer:
$4.9
Step-by-step explanation:
[ Unitary method]
3 pack of erasers = $1.47
1 pack = $1.47 / 3 = $ 0.49
10 pack = $ 0.49 x 10 = $4.9
(I hope im right!)
The ratio of boys to girls Ms. Garcia’s class is 4:5.
a. If there are 12 boys in the class, how many girls are there?
Answer:
15 girls
4x3=12 so u multiply 3 on both sides and 5 x 3=15
Suppose you asked 100 commuters how much they spend each year and obtained a mean of $167 spent on transportation and a standard deviation of $40. Using the 2 SE rule of thumb, calculate a 95% confidence interval for the mean and select the values that come closest to those that would fill the spaces in the following interpretation: we can be 95% confident that the mean amount of money spent on transportation lies between _____ and _____ .
Answer:
The correct answer is "$159 and $175".
Step-by-step explanation:
The give values are:
Mean,
= $167
Standard deviation,
[tex]\sigma[/tex] = $40
Number of commuters,
n = 100
Now,
⇒ [tex]SE=\frac{\sigma}{\sqrt{n} }[/tex]
On putting the given values, we get
⇒ [tex]=\frac{40}{\sqrt{100} }[/tex]
⇒ [tex]=\frac{40}{10}[/tex]
⇒ [tex]=4[/tex]
By using the 2 SE rule of thumb, we get
= [tex]$(167 - 2\times 4)[/tex]
= [tex]167-8[/tex]
= [tex]159[/tex] ($)
Or,
= [tex](167 + 2\times 4)[/tex]
= [tex]167+8[/tex]
= [tex]175[/tex] ($)
i.e,
$159 and $175
1. A pond has 85 frogs, 20% of the frogs are green the rest are orange, brown, and yellow. How many frogs are green?
Answer:
17 green frogs
Step-by-step explanation:
You need to multiply the decimal form of 20% by 85.
To find the decimal form of a percent you take the decimal (20.00) and move it twice to the left (20.00 ---> .2000)
Now, multiply by .2 by 85
(.2)(85) = 17
Therefore, 17 frogs in the pond of 85 frogs are green
Hope this helps!!
- Kay :)
Please help! Marking brainliest if correct.
Answer:
110 degrees
Step-by-step explanation:
Because these angles are vertical, 5x+15=8x-42. thus, 15=3x-42, 3x=57, and x=19. 5x+15=5(19) +15=110. So, m<CDE=110 degrees.
Answer:
110°
Step-by-step explanation:
Since CDE and FDG are vertical, they are congruent, so:
5x + 15 = 8x - 42
Solve the equation for x
57 = 3x
19 = x
Then solve for one of the angles (I chose CDE but FDG would also work)
5(19)+15
95 + 15
110
Jonathan was riding his bike at 6 miles per hour and went 24 miles How long was Jonathan riding?
2x-7y=14
Solve for x
solve each formula for the specified variable
Answer:
[tex]\frac{A-2wh}{2(w+h)}=l[/tex]
Step-by-step explanation:
We have to find the formula for the value of 'l'.
So, we will isolate 'l' on one side of the formula.
A = 2lw + 2lh + 2wh
A = 2l(w + h) + 2wh
A - 2wh = 2l(w + h) + 2wh - 2wh
A - 2wh = 2l(w + h)
[tex]\frac{A-2wh}{2(w+h)}=\frac{2l(w+h)}{2(w+h)}[/tex]
[tex]\frac{A-2wh}{2(w+h)}=l[/tex]
Therefore, formula for 'l' will be,
[tex]\frac{A-2wh}{2(w+h)}=l[/tex]
5x + 9y, when x=8, y=11
a 3 –c + b, when a=3, b=6, c=8
4(g –h) +10,when g=12, h=7
4(g –h) +10,when g=12, h=7
k 3 –4j +12, when k=8, j=2
help plssss
Answer:
Please check the explanation.
Step-by-step explanation:
Part 1)
5x + 9y, when x=8, y=11
substituting x=8, y=11 in 5x + 9
5x + 9y = 5(8) + 9(11)
= 40 + 99
= 139
Part 2)
a³ –c + b, when a=3, b=6, c=8
substituting a=3, b=6, c=8 in a³ –c + b
a³ –c + b = (3)³ - 8 + 6
= 27 - 2
= 25
Part 3)
4(g –h) +10, when g=12, h=7
substituting g=12, h=7 in 4(g –h) +10
4(g –h) +10 = 4(12 - 7) + 10
= 4(5) + 10
= 20 + 10
= 30
Part 4)
k³ –4j +12, when k=8, j=2
substituting k=8, j=2 in k³ –4j +12
k³ –4j +12 = (8)³ - 4(2) + 12
= 512 - 8 + 12
= 516
Summary:
Write inequalities to represent the situations below.
Ryan exercises no less than 35 minutes per day. Use t to represent Ryan's amount of exercise (in minutes per day).
( ≤ < > ≥ )
Answer:
T<45
Step-by-step explanation:
More than is a greater than symbol
Inequalities help us to compare two unequal expressions. The inequality that can be used to represent the time for which Ryan exercise is t≥35.
What are inequalities?Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed.
It is mostly denoted by the symbol <, >, ≤, and ≥.
Given Ryan exercises no less than 35 minutes per day. The inequality that can be used to represent the time for which Ryan exercise is t≥35.
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Please can someone solve x and I need it as an improper fraction please
Answer:
x=26/7
Step-by-step explanation:
Add 5/7 to both sides. Multiply 3 and the denominator being 7 to get 21. Add the numerator of 5 to 21 to get 26. The denominator stays the same and the numerator becomes 26.
Express 9 as a ratio of 27
Answer:
9/27 or 9 to 27
Step-by-step explanation:
What is the Inverse of function ?
f() = 1 + 11
OA 1-1(x) = 105 - 11
OB. 5-1(x) =
1-1(1) =
OD. 1-1(x) = fot + 11
110
91 + 11
10
91 - 99
10
Answer:
36
Step-by-step explanation:
.A taxi service charges AED 10 plus AED 250 per kilometer for a trip to the airport. The total
charge is AED 135
How far, in kilometers, is the trip to the airport?
Given:
A taxi service charges AED 10 plus AED 250 per kilometer for a trip to the airport.
The total charge is AED 135.
To find:
How far, in kilometers, is the trip to the airport?
Solution:
Let x km be the trip to the airport.
A taxi service charges AED 10 plus AED 250 per kilometer for a trip to the airport. So, total changes for x km trip is
[tex]T=10+250x[/tex]
The total charge is AED 135.
[tex]10+250x=135[/tex]
[tex]250x=135-10[/tex]
[tex]250x=125[/tex]
Divide both sides by 250.
[tex]x=\dfrac{125}{250}[/tex]
[tex]x=\dfrac{1}{2}[/tex]
[tex]x=0.5[/tex]
Therefore, the trip to the airport is 0.5 km.
A, B, C and D are points on a circle, centre O.
AOBE and DCE are straight lines.
CO = CE.
Angle AOD = 69º
Angle CEO = xº
Calculate the value of x.
Show your working clearly.
Answer:
X=0,2
Step-by-step explanation:
Będzie x dla e polecam źle jest xdd
The ∠DCO will be 2·x, 69° is the sum of ∠DCO and x° is x = 23°
What is a circle?A curving line makes up the form of a circle. It is spherical, and every point along the curving line is equally spaced first from the center. Due to its multiple nature, this form is flat.
Points on the circle is A, B, C, and D
Straight lines present are AOBE and DCE
Segment CO = Segment CE
∠AOD = 69°
∠CEO = x°
∠OCD = ∠ODC as this is an isosceles triangle
an exterior angle of a triangle can be determined as
69° = ∠x° + ∠ODC
Because of the Angle sum property of a triangle
∠DOC = 180 - 2×∠ODC
Angles added together on a linear fashion are supplementary.
180 - 2×∠ODC + x° + 69° = 180°
x° + 69° - 2×∠ODC = 0
A triangle's exterior angle is equal to the product of its diagonal internal angles
∠ODC = 2·x°
69° = x° + ∠ODC = x° + 2·x° = 3·x°
69° = 3·x°
x = 69° ÷ 3
x = 23°
Learn more about circle, here:
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Hello and it would be very helpful if you know these answers!
1. 15 decreased by the product of a number x and 4.
2. Your uncle is 2 years older than 3 times your age.
Answer:
1) 15-4x
2) 3x+2
Step-by-step explanation:
1) product of x and 4 is 4x then subtract that from 15
2) use x as your age in this situation so your age times 3 is 3x and since he's 2 years older than that u add 2 more
3. Simplify 3 x g x 5 x h
Answer:
3 into g into 5 into h
in this we will group the term 3 and 5 together and then the g and h
so the answer will be 3 into 5 into g into h = 15gh
The expression 3 × g × 5 × h is in the simplified form of 15gh.
What is Algebra?The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
PEMDAS rule means for the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.
It is also known as the product. If the object n is given to m times then we just simply multiply them.
The expression is given below.
⇒ 3 × g × 5 × h
Simplify the expression, then we have
⇒ 3 × g × 5 × h
⇒ 15gh
More about the Algebra link is given below.
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The radius of a circle is 5 ft. Find its area to the nearest tenth.
Asap
Answer:
A≈78.54
Step-by-step explanation:
Answer:
78.5
Step-by-step explanation:
because i said so
help me plz due today
Answer:
4x , 2y , 5
Step-by-step explanation:
Answer:
The answer is B
Step-by-step explanation:
The terms are
4x, 2y, 5
Hope that helps
A college bookstore marks up the price that it pays the publisher for a book by 35%. If the selling price of a book is $70.00, how much did the bookstore pay for this book?
Answer:
24.5
Step-by-step explanation:
70 • 0.35
24.5
Anyone know how to do this?
Answer:
third option
Step-by-step explanation:
The equation of quantities in direct variation is
y = kx ← k is the constant of variation
y = 3x ← is in this form with k = 3
Thus the function represents direct variation → I
The graph of the equation of direct variation passes through the origin II
When x = 2, then
y = 3 × 2 = 6 → IV
Find the value of x.
132
(5x + 7)
O A. 15
B. 45
O C. 35
O D. 25
Answer: 25
Step-by-step explanation:
I just took the test on a p e x
Austin builds a mound 6 inches high in his yard. The height of the surface of the yard is represented by 0. What integer represents the top of the mound?
what is the other angel? help
Answer:
59.7 degrees
Step-by-step explanation:
see attached
cual es el resultado de la siguiente operacion
Rahul visited Taj Mahal. He found that the fountains near
the entry gate are sprinkling in circles. If the area covered
by the sprinkler of two circles is in the ratio 25:36. Find the
ratio of their circumference.
Answer:
5:6.
Step-by-step explanation:
The areas are 2 dimensional and the circumference is one dimensional.
So the ratio of the circumferences is √25:√36
= 5:6.
There are 20 students in Ms. Tamer’s class. 15 of those students are girls. What percent of Ms. Tamer’s class are girls?
Answer:
75% ? Im not sure if this is right or not!
Step-by-step explanation:
Hopefully this helps!
Answer:
75%
Step-by-step explanation:
15 divided by 20
someone help...anyone
Answer:
A.Step-by-step explanation:
When you graph the equation, it hits every point as seen below.
If 4a-3 = 2a then 12a=?
Answer:
18
Step-by-step explanation:
4a-3=2a
2a=3
a=1.5
12a=1.5*12
12a=18
In Isaiah’s class, 18/24 of the students like swimming better than they like running. What is 18/24 in simplest form?
Answer:
3/4
Step-by-step explanation: