Hello.
First, "twice a number" means we multiply 2 times that number.
Let the number be s.
Now, the sum of 2 times s and 5 is 21.
The product of 2 and s can be written like so:
[tex]\sf{2s[/tex]
Now, the sum of 2s and 5 is 21:
[tex]\sf{2s+5=21[/tex]
Subtract 5 from both sides:
[tex]\sf{2s=21-5[/tex]
[tex]\sf{2s=16}[/tex]
Now, divide both sides by 2:
[tex]\Large\boxed{\sf{s=8}}[/tex]
I hope it helps.
Have a nice day.
[tex]\boxed{imperturbability}[/tex]
x = 8
Step-by-step explanation:
Let the required number be x.
According to the given question,
=> 2x + 5 = 21
=> 2x = 21 - 5
=> 2x = 16
=> x = 16/2
=> x = 8
Hope it helps you!!An artist wants to create a painting on a semicircle canvas with a radius of 13 feet. He wants to surround the canvas with a piece of string. The string costs $1.05 per foot. How much will the piece of string that he needs cost? Round your answer to the nearest dollar.
A. $43
B. $82
C. $14
D. $41
PLS HELP!
solve by completing the square
x²+4x=8
Step-by-step explanation:
x²+4x=8
rearrange
x² + 4x - 8 = 0
half of 4 is 2
so
x² + 4x + 2² - 2² - 8 = 0
do x² + 4x + 2²
multiplies to give 4 adds to give 4
2+ 2
(x + 2)²
(x + 2)² - 2² - 8
(x + 2)² - 4 - 8
(x + 2)² - 12
(x + 2 + √12) (x + 2 - √12)
√12 = √4 * √3 = 2 √3
(x + 2 + 2√3) (x + 2 - 2√3)
I'm gonna cry someone please help.
Answer:
Median for a: 50 because it is in the middle of the points
Median for b: 35 because it is in the middle of the points.
Step-by-step explanation:
What i do is i write all the numbers out as shown in graph and cross one out on both sides untill there is one left.
IQR A: 15
IQR B: 15
Find the 25 percentile the. the 75 pecentile then subtract the numbers off from eachother.
Have an amazing day!
PLEASE RATE!
How to find the area and circumference
Answer:
area 7²pi in²
circumference 14pi
Step-by-step explanation:
area of circle = r²pi
circumference of circle = d pi
What is the area of a sector with a central angle of 2π9 radians and a diameter of 20. 6 mm? Use 3. 14 for πand round your answer to the nearest hundredth. Enter your answer as a decimal in the box. Mm².
The area of a sector with a central angle of 2π/9 radians and a diameter of 20.6 mm is 37.01 mm²
It is given that
Central angle α= 2π/9
Diameter d= 20.6mm
So, radius r= 10.3mm
What is the formula for the area of the sector?The area of a sector with central angle α and radius r is 0.5*r²*α
So, area of given sector = 0.5*10.3² * 2π/9
Area of given sector = 37.01 mm²
Therefore, the area of a sector with a central angle of 2π/9 radians and a diameter of 20.6 mm is 37.01 mm².
To get more about the sector of a circle visit:
https://brainly.com/question/25305793
Answer:
the answer is 37.01 took the test
Step-by-step explanation:
( 2 • 10^6 ) * ( 6 • 10^7 )
Answer:
120,000,000,000,000
Step-by-step explanation:
(2×10^6)= 2,000,000
(6×10^7)=60,000,000
2,000,000×60,000,000=120,000,000,000,000
help me pleaseeeeeeeeee
Answer:
Acute
Step-by-step explanation:
Answer:
If you are finding out the lower angles they are acute but the top is right
Step-by-step explanation:
9. Find the measure of arc UPT.
Answer: 324 degrees
Step-by-step explanation:
A survey in September 2020 of 1000 gas stations found that the price charged for a gallon of regular gas could be closely approximated by a normal distribution with a mean of $3.53 and a standard deviation of $0.20.
Draw the normal distribution with these numbers.
a. How many stations charge over $3.93?
b. How many of the stations charge between $3.13 and $3.93 for a gallon?
c. How many stations charge less than $3.33?
2. which of these units would be used to measure each of the following:
mm2, cm2, m2, km2.
Answer:
A. m2
b.km2
c.cm2
d.km2
e.m2
Step-by-step explanation:
mr cleans account was deleted ;-;
Bobby bought a ticket to see a local play that
was on sale for 40 percent off of the original price.
If the original price of the ticket was $39, what
was the sales price of the ticket?
O $15.60
O $25.00
O $54.60
O $23.40
Answer:
23.40
Step-by-step explanation:
Find 60% of 39, it's 23.4
Ada’s history teacher wrote a test for the class.
a
The test is 26 questions long and is worth 123 points.
Ada wrote two equations, where m represents the
number of multiple choice questions on the test, and
s represents the number of essay questions on the test.
–
m+s= 26
3m + 8s = 123
How many essay questions are on the test?
Answer:
9 essay questions.
Step-by-step explanation:
We have been given that ada’s history teacher writes a test for the class with 26 questions. We can represent this information in an equation as:
x+y=26
We are also told that multiple choice worth 3 points each, so total number of points for x questions will be 3x.
As essays worth 8 points each, so total number of points for y questions will be 8y.
Since the test is worth 123 points, so we can represent this information in an equation as:
3x + 8y= 123
Now we will use substitution method to solve system of linear equations.
From equation (1) we will get,
x=26-y
Substituting this value in equation (2) we will get,
3×(26-y)+8y=123
78-3y+8y=123
78+5y=123
Let us subtract 78 from both sides of our equation.
78-78+5y=123-78
5y=45
Let us divide both sides of our equation by 5.
5y/5=45/5
y=9
A newspaper advertisement offers a $6500 used car for nothing down and 36 easy monthly payments of
$196.80. What is the total amount paid for the car, and what is the total finance charge? Calculate the
simple interest rate charged.
Total Amount:
Total Finance Charge
$
Simple Interest Rate:
%
Using simple interest, it is found that:
The total amount paid was of $7,084.8.The finance charge was of $584.8.The simple interest rate was of 3%.Simple InterestSimple interest is used when there is a single compounding per time period.
The amount of interest after t years in is modeled by:
[tex]I = Prt[/tex]
In which:
P is the initial amount.r is the interest rate, as a decimal.In this problem, the amount paid was of 36 monthly payments of
$196.80, hence:
36 x 196.80 = $7084.8.
The total amount paid was of $7,084.8.
The original price is of $6,500, hence the finance charge was of:
7084.8 - 6500 = $584.8.
For interest, we have that:
[tex]I = 584.8, P = 6500, t = 3[/tex], hence:
[tex]I = Prt[/tex]
[tex]584.8 = 6500(3)r[/tex]
[tex]r = \frac{584.8}{6500 \times 3}[/tex]
[tex]r = 0.03[/tex]
The simple interest rate was of 3%.
More can be learned about simple interest at https://brainly.com/question/25296782
8.
Create a list of the possible outcomes of the spinner and die.
List pls!
Answer:
Step-by-step explanation:
When we spin the spinner, there are four equally likely outcomes: "A," "B," "C," and "D." An experiment consists of rolling the die and then spinning the spinner. The face of the spinner has four congruent regions, labeled "A," "B," "C," and "D," respectively.
Answer:
It depends what type of spinner it is, but the basics of the spinner is 1/(whatever the number of spaces in it are)
For the die, it's 1/6
Find the missing angles
Answer:
z=116 (opposite angles are equal)
y=180-(116+27)=37(angles in a triangle sum up to 180)
x:
(z) + (27+x) =180(interior angles on same side are supplementary
116 + 27+ x =180
x= 37
Triangle ABC has angle measures as shown below. Using the information in the
diagram, find the value of x. Be sure to write your answer down on a piece of paper -
you will need it for Question 4.
In your answer, give the value of x and explain how you calculated it.
3(x + 2)°
35
52°
0
Answer:
x=29 i know because i put that and it was a 100
Answer number 10 and number 3 and 4
Answer:
where's the 10 and 3,4 ? uh there's no number
The radius of a circle is 1 mlle, What is the circle's area?
Answer:
area = 3.14 mi² (to the nearest hundredth)
Step-by-step explanation:
Area of a circle = [tex]\pi r^2[/tex]
(where r is the radius)
Given:
radius = 1 mileSubstitute r = 1 into the equation:
⇒ area = [tex]\pi[/tex] × 1²
⇒ area = [tex]\pi[/tex] mi²
⇒ area = 3.14 mi² (to the nearest hundredth)
Answer:
π
Step-by-step explanation:
→ State the formula for the area of a circle
π × r²
→ Substitute in the numbers
π × 1² = π
If the a > 0 (positive) the graph opens
down or up
Answer:
Step-by-step explanation:
If a > 0 , then the parabola opens upward.
If a < 0, then the parabola opens downward.
Please answer correctly
Answer:
2nd and 4th options
Step-by-step explanation:
both answers begin with a fixed point drawn with a straight line through a point that continues on by showing an arrow
Answer:
All except FD
Step-by-step explanation:
All except FD
a recipe requires 1/2 cup of flour for every batch of cookies. How many batches of cookies can be made with 4 1/2 cups of flour?
Answer:
You want to know how many cookies can be made using 5 1/2 cups of flour.
1 x 2 2
-------------- = -----
2 x 11 22
2/22 simplified is 1/11
So, You can make 11 cookies with 5 1/2 cups of flour.
Step-by-step explanation:
hope this will help you
please put me in brainlest
What is the percentage of Chilean living in rural areas? Go to Population. More than 15% less than 15%. 5% 50%
Answer:
B. less than 15% just took the quiz and got a 100
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
Find the perimeter of the parallelogram with these vertices.
(6,4),(-1, 4), (1, -5), (-6, -5)
Answer:
34.6
Step-by-step explanation:
The perimeter of a plane geometric figure is the sum of its side lengths. This figure has two horizontal sides, so their length is easy to compute. It also has two diagonal sides, so the distance formula or Pythagorean theorem must be invoked to find their length.
The length of diagonal AC is ...
d = √((x2 -x1)² +(y2 -y1)²)
d = √((1 -6)² +(-5 -4)²) = √((-5)² +(-9)²) = √106 ≈ 10.3
The length of each horizontal segment can be found by counting grid squares or by finding the difference of x-coordinates.
AB = 6 -(-1) = 6 +1 = 7
__
Two sides have length 10.3 and two sides have length 7, so the perimeter is ...
P = 2(10.3 +7) = 34.6 . . . units
Find the value of each variable in the parallelogram. Please help!
Answer:
m = 35 , n = 110
Step-by-step explanation:
the opposite angles of a parallelogram are congruent , then
2m = 70 ( divide both sides by 2 )
m = 35
consecutive angles are supplementary, that is sum to 180° , then
n + 70 = 180 ( subtract 70 from both sides )
n = 110
Solution:
We know that:
In a parallelogram, opposite angles are equivalentThis means that:
70 = 2mDivide 2 both sides to find m:
70 = 2m70/2 = 2m/2m = 70/2 = 35°We can see that two angles measuring 70° and n° are a linear pair.
n + 70 = 180n = 180 - 70 = 110°help its all in the screenshot v3
Answer:
it’s the first answer
The measure of an angle is 143.4°. What is the measure of its supplementary angle?
Answer:
Step-by-step explanation:
Elena works at an appliance store. She recorded her recent sales.
ovens 5
washing machines 6
dishwashers 4
Of the next 12 appliances Elena sells, how many should she expect to be ovens, given the past data?
Using proportions, it is found that she should expect 4 of the next 12 appliances to be ovens.
What is a proportion?A proportion is a fraction of a total amount, and the measures are related using a rule of three.
In this problem, we have that out of 15 items, 5 are ovens. How many will be out of 12? To find out, we start with the rule of three.
15 items - 5 ovens
12 items - x ovens
Applying cross multiplication:
15x = 60
x = 4.
Hence, 4 of the next 12 appliances to be ovens.
More can be learned about proportions at https://brainly.com/question/24372153
Use the box plot to determine which statement is accurate.
A) About 25% of adults have cholesterol levels of at most 212.
B) About 75% of adults have cholesterol levels less than 180.
C) One half of the cholesterol levels are between 180 and 197.5
D) One half of the cholesterol levels are between 180 and 211.
The accurate statements are:
A) About 25% of adults have cholesterol levels of at most 212.
D) One half of the cholesterol levels are between 180 and 211.
Q₃ (the third quartile) is 211, which is less than 212,
About 25% of adults have cholesterol levels of at most 212 is accurate.
Q₁ (the first quartile) is 100, which is greater than 180, About 75% of adults have cholesterol levels less than 180 is not accurate. We cannot determine that about 75% of adults have cholesterol levels less than 180 based on the given information.
The median divides the data into two equal halves, and it falls between Q₁ and Q₃.
So, one half of the cholesterol levels are between Q₁ and the median, but not specifically between 180 and 197.5.
One half of the cholesterol levels are between 180 and 211, as Q₁ is the lower boundary and Q₃ is the upper boundary of the interquartile range.
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What is the equation of the line that goes through
the points (4,6) and (2,12)?
A.y=3x+18
B.y=-3x+18
C.y=-3x+6
D.y=3x
Answer:
B) y=-3x+18
Jennifer needs to fit 28 t-shirts into her
new dresser. Each drawer can hold 6
shirts. How many drawers will she need
to use to put all of the t-shirts away?
[?] drawers
Hint: if your quotient has a remainder,
you will need to add one more drawer
so that all of the shirts can be put away.
Enter
Answer:
SO 28 new t shirts.
Each drawer can hole 6 tshirts.
How many drawers needed.
Now this is a division problem, how many “6 tshirts” can fit into 28 t shirts.
Something like that.
Anyways its 28/6 or 28 ÷ 6 = 4 remainder 4
4 r 4
Now we need all t shirts put away not 24 and have 4 left over. So we can just get another drawer and add it to the whole number.
So 5 drawers