Answer:
Four times his sister's age would be 4b. his age is two years less, so we need to subtract 2.
put together, this is 4b - 2.
Answer:
Your answer will be 4b - 2
Step-by-step explanation:
Hope this helps!!
For the data set shown in the scatterplot, what is the BEST approximation of the y-intercept for the line of best fit?
A) 0
B) 10
C) 45
D) 80
Answer:
c.
Step-by-step explanation:
You could use a regression calculator to help you. You should try it its very helpful :)
Which answer choice shows a solution set in which all
values, when input for x, will be true?
80
---- > 4
4x
{2,4,6,8}
{3,6,9,12}
{1,2,3,4}
{3,4,5,6}
Given:
[tex]$\frac{80}{4 x}>4[/tex]
To find:
The solution set for the inequality.
Solution:
If the greater number of the set satisfies the inequality, then that set is the solution set.
Option A: {2, 4, 6, 8}
Greater number = 8. Thus substitute x = 8 in given expression.
[tex]$\frac{80}{4 \times 8}>4[/tex]
[tex]$2.5>4[/tex]
This is not true because 2.5 < 4.
It is not solution set.
Option B: {3, 6, 9, 12}
Greater number = 12. Thus substitute x = 12 in given expression.
[tex]$\frac{80}{4 \times 12}>4[/tex]
[tex]$1.67>4[/tex]
This is not true because 1.67 < 4.
It is not solution set.
Option C: {1, 2, 3, 4}
Greater number = 4. Thus substitute x = 4 in given expression.
[tex]$\frac{80}{4 \times 4}>4[/tex]
[tex]$5>4[/tex]
This is true because 5 is greater than 4.
It is the solution set.
Option D: {3, 4, 5, 6}
Greater number = 6. Thus substitute x = 6 in given expression.
[tex]$\frac{80}{4 \times 6}>4[/tex]
[tex]$3.33>4[/tex]
This is not true because 3.33 < 4.
It is not solution set.
Hence {1, 2, 3, 4} is the solution set for the expression.
Answer:
Step-by-step explanation:
3rd choice is correct
Choose a room. How much would it cost to paint that room with two coats of paint?
Need help like now
You will get 50 points if you help my
Answer:
should be $410.81 for living room
Step-by-step explanation:
13 x 15.5 x 12 = area
area x 2 = two coats of paint on area
two coats of paint on area divided by 400
multiply that by 33.98
Answer:
$135.92
Step-by-step explanation:
Just chose Bedroom 3 because it has whole numbers, none of the other rubbish.
The interior surface area of the bedroom can be calculated by the formula:
2lw + 2wh + 2lh
The surface area is 816 feet squared.
Since we are painting the room twice, we can just double this value for the sake of the next step.
The cost per gallon of paint is $33.98.
Each gallon covers 400 ft^2.
The number of gallons required is (816*2)/400, which is 4.08 gallons. If we approximate that we require 4 gallons, then the total cost will be $33.98*4 = $135.92.
I am the fewest number of coins needed to
make 37 cents using only pennies, nickels,
and dimes. Who am I?
What is the answer
Answer:
6 coins
Step-by-step explanation:
3 dimes
1 nickel
2 pennies
Answer: 6 coins
Step-by-step explanation:
Pennies = 1c
Nickels = 5c
Dimes = 10c
10 * 3 dimes = 30c
30c + 5c (a nickle) = 35c
35c + 2 pennies = 34
Therefore, the lowest amount of coins is 6 (3 dimes, 1 nickle, and 2 pennies)
What number is 74% or 920
Answer:920 × 0.74
= 680.8
Answer:
68.08
Step-by-step explanation:
Which dimensions can create only one unique triangle?
A. three angles measuring 25°, 65°, and 90°
B. three angles measuring 50°, 50°, and 50°
C. three sides measuring 5 in, 12 in, and 14 in.
D. three sides measuring 4 ft, 8 ft, and 14 ft
Answer now and i’ll thank you!
Answer:
C. three sides measuring 5 in, 12 in, and 14 in.
Step-by-step explanation:
Please help easy and it is multiple choice
5.702 cm
hoping this helps
using the numbers 0-6 once, make 2 equivalent ratios
Step-by-step explanation:
As we have to use the number 0-6 once to make 2 equivalent ratios.
so lets solve the problem.
Determining first equivalent ratio
as
5 times 2 = 10and
32 times 2 = 64so
Together will get 10/64Therefore, first equivalent ratio
[tex]\:\frac{5}{32}=\frac{10}{64}[/tex]
Determining second equivalent ratio
[tex]\frac{13}{65}=\frac{4}{20}[/tex]
as
[tex]\frac{13}{65}=\frac{1}{5}[/tex]
and
[tex]\frac{4}{20}=\frac{1}{5}[/tex]
Therefore, second equivalent ratio
[tex]\frac{13}{65}=\frac{4}{20}[/tex]
Both can be simplified to 1:2.
To create two equivalent ratios using the numbers 0-6 once, we first need to understand that a ratio compares two quantities and equivalent ratios can be simplified or expanded from one another by the same factor. Here, we select the numbers carefully to form such ratios.
Let's use the numbers 2, 3, 4, and 6. The ratio of 2:4 is equivalent to 3:6 because when both sides of the first ratio are multiplied by 2, the result is the second ratio. Therefore, the ratios 2:4 and 3:6 are equivalent because they express the same relationship between numbers, as both can be simplified to the ratio of 1:2.
PLEASE HELP ASAP!!
What type of association does the graph show between x and y?
Linear positive association
Nonlinear positive association
Linear negative association
Nonlinear negative association
Answer:
The answer is D
Step-by-step explanation:
I know because I take pre- algebra.
Cassandra spends 6.75 hours each day at school.
Round the amount of time to the nearest hour.
Answer:
6.75 round to 7
Step-by-step explanation:
Answer:
7 hours
Step-by-step explanation:
6.75 is closer to 7, because it is 0.25 from 7 and 0.75 from 6. Since 0.75>0.25, 6.75 rounds up to 7 hours a day. Hope this helps!
What else would need to be congruent to show that A ABC= A DEF by ASA?
Answer:
choice A. line BC = line EF
Step-by-step explanation:
we need the sides BC = EF
This is the side between the congruent angles.
For the congruence of the triangles, AB ≅ DE, BC ≅ EF, or CA ≅ FD should be congruent. Then the correct option is A.
What is the triangle?A triangle is a three-sided polygon with three angles. The angles of the triangle add up to 180 degrees.
If the two triangles are congruent, then the ratio of the corresponding sides will be one.
If any two sides and one angle of the triangles are congruent, then the triangles are congruent.
Or if any two angles and one side of the triangles are congruent, then the triangles are congruent.
In the figure, the two angle of the triangle are congruent.
For SAS postulate, then the sides will be
AB ≅ DE
BC ≅ EF
CA ≅ FD
Then the correct option is A.
More about the triangle link is given below.
https://brainly.com/question/25813512
#SPJ5
Simplify 8y(y - 4) + 3y(y+2)
Answer:
11y^2-26y
Step-by-step explanation:
8y(y - 4) + 3y(y+2)
8y^2-32y+3y^2+6y
11y^2-26y
Answer:
11y^2 -26y
Step-by-step explanation:
8y(y - 4) + 3y(y+2)
Distribute
8y^2 -32y +3y^2 +6y
Combine like terms
8y^2 +3y^2 -32y +6y
11y^2 -26y
When solving the following system by elimination, which variable would be eliminated after adding the 2 equations together?
Answer:
B. x
Step-by-step explanation:
-3x+8y=-6
3x-2y=-12
if we add these
-3x+3x+8y-2y=-6-12
6y=-12 so x will be eliminated
Final answer:
When solving a system by elimination, the variable eliminated is the one with coefficients that add up to zero when equations are combined.
Explanation:
When solving the following system by elimination, which variable would be eliminated after adding the 2 equations together?
When adding the two equations together in a system, the variable that will be eliminated will be the one that has coefficients with additive inverse values. For example, if one equation has x and the other has -x, adding them would result in the elimination of the x variable.
After adding the two equations together, look for a pair of variables that will cancel each other out, resulting in the elimination of one variable.
A landlord wanted to determine the number of dogs that each tenant owns. The following data set shows the results from the landlord’s survey.
0, 0, 0, 0, 1, 1, 2, 2, 2, 1, 2, 1, 2, 4, 3, 1, 2, 1
The landlord constructed the following dot plot to represent the data. What information on the dot plot is incorrect? Select all that apply.
-the number of tenants with 0 dogs
-the number of tenants with 1 dog
-the number of tenants with 2 dogs
-the number of tenants with 3 dogs
-the number of tenants with 4 dogs
Answer:i think its 1,3,4
Step-by-step explanation:
I need help..........
9z - 22 = -25
would this come out to be -1/3?
Step-by-step explanation:
9z=-25+22
9z=-3
z= -3/9
z=-1/3
what is 22,119 rounded to the nearest throusand place
Answer:
22,000
Step-by-step explanation:
When you are rounding, anything from 1-4 you round down, and any number 5-9 you round up. So, in this case the middle would be 500, but since the number is 119, it is 22,000.
Answer: 22000
Step-by-step explanation:
22,119 to the nearest thousandth
Thousand has 3 zeros at the back
Looking at the last 3 figures
It is not up to 500,so it is rounded up as 0
Therefore, nearest thousandth is
=22000
Find the area of a circle with a diameter of 6.
Either enter an exact answer in terms of pi or use 3.14 for pi and enter your answer as a decimal.
To find the area of a circle with a diameter of 6, divide the diameter by 2 to get the radius, then use the formula Area = πr² with the calculated radius, resulting in an area of 28.26.
Using either the exact value of π (pi) or its approximation 3.14, we substitute the radius into the formula to calculate the area.
Using π, the area is:
A = π(3)² = 9π
Using the approximation of 3.14 for π, the area is:
A = 3.14(3)² = 3.14(9) = 28.26
So, the area of the circle is either 9π square units or approximately 28.26 square units if you use 3.14 for π.
Answer the following questions if x=3 what is the value of
2x+5 11-3x x²+4x
Answer:
Step-by-step explanation:
hello :
2x+5 11-3x x²+4x
x=3 : 2(3)+5+11-3(2)+(3²)+4(3) ...continu
Answer:
11
2
21
Step-by-step explanation:
Since the value of x is given we will have to substitute into each of the equation
So let's start
2x+5
And x is given to be 3
2(3)+5
6+5
11
11-3x
11-3(3)
11-9
2
X^2+4x
(3)^2+4(3)
9+12
21
Please help urgent!!!!
Step-by-step explanation:
you are such a b
What is the value of (StartFraction 3 Over 10 EndFraction) cubed?
a. StartFraction 3 Over 1000 EndFraction
b. StartFraction 27 Over 1000 EndFraction
c. StartFraction 9 Over 10 EndFraction
d. StartFraction 27 Over 10 EndFraction
Given:
The given expression is [tex]\left(\frac{3}{10}\right)^{3}[/tex]
We need to determine the value of the given expression.
Value of the expression:
Let us determine the value of the expression.
The value of the expression can be determined by simplifying the given expression.
Applying the exponent rule, [tex]\left(\frac{a}{b}\right)^{c}=\frac{a^{c}}{b^{c}}[/tex], we get;
[tex]\left(\frac{3}{10}\right)^{3}=\frac{3^{3}}{10^{3}}[/tex]
Since, the value of 3³ is 27 and the value of 10³ is 1000, substituting these values, we get;
[tex]\frac{27}{1000}[/tex]
Hence, the value of the expression is [tex]\frac{27}{1000}[/tex]
Thus, Option b is the correct answer.
Answer:
[tex]\frac{27}{1000}[/tex]
Step-by-step explanation:
I got it right on edg. 2020.
Liam is making barbecue ribs over a fire. The internal temperature of the ribs when he starts cooking is 40°F. During each hour of cooking, the internal temperature will increase by 25%. The ribs are safe to eat when they reach 165°F.
Use the drop-down menus to complete an inequality that can be solved to find how much time, t, it will take for the internal temperature to reach at least 165°F.
Answer: You need to wait at least 6.4 hours to eat the ribs.
t ≥ 6.4 hours.
Step-by-step explanation:
The initial temperature is 40°F, and it increases by 25% each hour.
This means that during hour 0 the temperature is 40° F
after the first hour, at h = 1h we have an increase of 25%, this means that the new temperature is:
T = 40° F + 0.25*40° F = 1.25*40° F
after another hour we have another increase of 25%, the temperature now is:
T = (1.25*40° F) + 0.25*(1.25*40° F) = (40° F)*(1.25)^2
Now, we can model the temperature at the hour h as:
T(h) = (40°f)*1.25^h
now we want to find the number of hours needed to get the temperature equal to 165°F. which is the minimum temperature that the ribs need to reach in order to be safe to eaten.
So we have:
(40°f)*1.25^h = 165° F
1.25^h = 165/40 = 4.125
h = ln(4.125)/ln(1.25) = 6.4 hours.
then the inequality is:
t ≥ 6.4 hours.
Answer:
40 × 1.25 ^ t greater or equal to ( >) 165
Which ordered pair is the solution to the system of linear equations -5x + Y = 26 and 2x-7y = 16 ?
Answer:
(-6, -4)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtract Property of EqualityAlgebra I
Terms/CoefficientsSolving systems of equations using substitution/eliminationStep-by-step explanation:
Step 1: Define Systems
-5x + y = 26
2x - 7y = 16
Step 2: Rewrite Systems
-5x + y = 26
Add 5x on both sides: y = 5x + 26Step 3: Redefine Systems
y = 5x + 26
2x - 7y = 16
Step 4: Solve for x
Substitution
Substitute in y: 2x - 7(5x + 26) = 16Distribute -7: 2x - 35x - 182 = 16Combine like terms: -33x - 182 = 16Isolate x term: -33x = 198Isolate x: x = -6Step 5: Solve for y
Define equation: 2x - 7y = 16Substitute in x: 2(-6) - 7y = 16Multiply: -12 - 7y = 16Isolate y term: -7y = 28Isolate y: y = -44t^3+9y+1
11gh-6t+4
z+mn-4v^2
List the terms in each expression
Answer:
1. 4t^3, 9y, 1
2.11gh, 6t, 4
3.z, mn, 4v^2
Step-by-step explanation:
Each term is separated by + or -
What is 54 in scientific notation
Answer:
5.2 times 10^1
Step-by-step explanation:
the first number should be less than ten.
Answer: [tex]5.4[/tex] [tex]x[/tex] [tex]10^{1}[/tex]
Step-by-step explanation: To write a number in scientific notation, first write a decimal point in the number so that there is only one digit to the left of the decimal point.
So here, we have 5.4 and notice that there
is only one digit to the left of the decimal point.
Next, we count the number of places the decimal point would
need to move to get back to the original number, 54.
Since we would need to move the decimal point 1 place to the right,
we have an exponent of positive 1.
Now, scientific notation is always expressed as a number between 1 and 10 including 1 but not 10 and it is multiplied by 10 to a certain power that must be an integer.
So we have [tex]5.4[/tex] [tex]x[/tex] [tex]10^{1}[/tex]
Notice that the exponent is positive.
This is because we would need to move the decimal point to the right in order to get back to the original number.
So 54 can be written in
scientific notation as [tex]5.4[/tex] [tex]x[/tex] [tex]10^{1}[/tex].
If two coins are tossed 100 times, what would the theoretical probability that the coins will land, one head, one tail?
are -3.5 and -14/4 the same value? plzzz i need helpppp
Answer:
Yes it is
Step-by-step explanation:
when you dived -14 by 4 you will get -3.5
The figure is made up of a semicircle and a triangle. Find the perimeter. Round your answer to the nearest hundredth
Answer:
The perimeter of the figure is 86.53 meters
Step-by-step explanation:
we know that
The perimeter of the figure is equal to the circumference of a semicircle, plus the sum of the legs of the right triangle
step 1
Find the circumference of a semicircle
The circumference of a semicircle is given by the formula
[tex]C=\pi r[/tex]
we have
[tex]r=29/2=14.5\ m[/tex] ----> the radius is half the diameter
assume
[tex]\pi =3.14[/tex]
substitute
[tex]C=(3.14)(14.5)=45.53\ m[/tex]
step 2
The sum of the legs of the right triangle is equal to
[tex]20+21=41\ m[/tex]
step 3
Perimeter of the figure
[tex]45.53+41=86.53\ m[/tex]
Help me I’m lost .-.
Answer:
z=100
Step-by-step explanation:
Opposite angles of an inscribed quadrilateral are supplementary.
180-80=100
There are 300 bunnies on a bunny farm. The farmer says their population
increases at a rate of 20% per year. What is the INITIAL VALUE for this
equation?
Answer:
The initial value is 300 bunnies
Step-by-step explanation:
we know that
The equation of a exponention growth function is given by
[tex]y=a(1+r)^x[/tex]
where
y is population of a bunnies
x is the number of years
a is the initial value
r is the rate of change
we have
[tex]a=300\\r=20\%=20/100=0.20[/tex]
substitute
[tex]y=300(1+0.20)^x[/tex]
[tex]y=300(1.20)^x[/tex]
therefore
The initial value is 300 bunnies