Answer:
$16
Step-by-step explanation:
20/5 = 4
4 x 4 = 16
Have a good day!
==================================================
Work Shown:
5 notebooks = 20 dollars
5/5 notebooks = 20/5 dollars ..... divide both sides by 5
1 notebook = 4 dollars ..... unit rate
4*(1 notebook) = 4*(4 dollars) .... multiply both sides by 4
4 notebooks = 16 dollars
---------------
Another approach:
(5 notebooks)/(20 dollars) = (4 notebooks)/(x dollars)
5/20 = 4/x
5*x = 20*4 ... cross multiply
5x = 80
5x/5 = 80/5 .... dividing both sides by 5
x = 16
So 4 notebooks cost $16
pllllsss answer for 30points and brainliest!!!!
(b) About how many times larger was the population of the United States than the population of Columbus, Ohio?
Answer:
387.6. So, the closest whole number would be 388 times larger
Step-by-step explanation:
I divided the U.S. pop by the Columbus pop and got the answer: 387.6. So, the closest whole number would be 388 times larger
Answer:
The population of the United States is 387.87 times larger than the population of Columbus, Ohio.
Step-by-step explanation:
8.25 times 100000 = 825,000
3.2 times 100000000 = 320,000,000
320,000,000 divided by 825,000 = 387.87
The slope is 3 true or false?
Answer:
The slope IS NOT 3.
So the statement is FALSE.
Step-by-step explanation:
y = mx + b
If we change the graph shown into the format shown above it would be:
y = 1x - 3
mx = slope
Slope = 1x
b = y-intercept
b = -3
To find the slope you must do:
[tex]\frac{y}{x} =\frac{RISE}{RUN}[/tex]
y = rise
x = run
In the graph shown, the points are going up and shift to the right 1 unit.
So the slope is: 1x
Therefore, the statement, "The slope is 3" is actually false.
Exactly how many 2/5 are in 4 1/5?
I need it today plz help me!
Answer: 2 /21
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
2/5 x 10 = 4
Write the equation of a quadratic with x-intercepts at (-1,0) and (4,0)
Answer:
y = x² - 3x - 4
Step-by-step explanation:
Given that the x- intercepts are x = - 1 and x = 4, then the corresponding factors are
(x + 1) and (x - 4) and the quadratic is the product of the factors, that is
y = (x + 1)(x - 4) ← expand using FOIL
y = x² - 3x - 4
Destiny wants to resize a 12-inch wide by 15-inch long photograph for the school newspaper. It is to fit in a space that is 8 inches long. What is the width of the resized photograph?
The answer is 10 inches.
900.06=_____ sig fig
Help?
Answer:
Lets in say 900.06 ____ the blank is represented as x:
x = 50
x = 45003
x = 900.060
Hope this helps! Please mark Brainliest!
A Rectangular room measures 12 m x 7 m what is the area of this room
Answer:
84 m^2
Step-by-step explanation:
Area is Length times width
12 times 7 is 84
can someone help me to solve this question?
Answer:
The values of x and y are x = 95 and y = 25
Step-by-step explanation:
If a quadrilateral is inscribed in a circle which means all its vertices lie on the circumference of the circle, then it is called a cyclic quadrilateral.
The properties of the cyclic quadrilateral
Every two opposite angles are supplementary (the sum of their measures is 180°)The measure of an exterior angle at one vertex equals the measure of the interior opposite angle to this vertexIn the given figure
∵ The four vertices of the quadrilateral QRTU lie on the circle
∴ QRTU is a cyclic quadrilateral
∵ ∠ PQU is an exterior angle of quadrilateral QRTU at Q
∵ ∠RTU is the opposite interior angle to it
→ By using the 2nd property above
∴ m∠PQU = m∠RTU
∵ m∠PQU = 95°
∵ m∠RTU = x°
∴ x = 95
∵ ∠QRT and ∠QUT are opposite angles in the cyclic quadrilateral
→ By using the 1st property above
∴ m∠QRT + m∠QUT = 180° ⇒ supplementary angles
∵ m∠QRT = 110°
∴ 110 + m∠QUT = 180°
→ Subtract 110 from both sides
∴ m∠QUT = 70°
In ΔSQU
∵ ∠ PQU is an exterior angle to the Δ T vertex Q
→ That means its measure equal the sum of the measures of the
two opposite interior angles QSU and QUS
∴ m∠PQU = m∠QSU + m∠QUS
∵ m∠PQU = 95°
∵ m∠QSU = y°
∵ m∠QUS = 70°
∴ 95 = y + 70
→ Subtract 70 from both sides
∴ 25 = y
∴ y = 25
Factorise fully the following:
a) x^2 + 3x
b) 2x^2- 8x
c) 6x + 9x^3
d) 12x^3- 4x^2
Is this a function (3,1), (3,2), (4,5)?
Answer:
No
Step-by-step explanation:
If the x value does not repeat than it's a funtction so therefore so therefore it t's not a function cause the variable of repeats
If f(x) = 5x, what is f^-1(x)?
PLEASE HELP!!
Answer:
Option 3
Step-by-step explanation:
to get inverse function, swap x and y first:
f(x)=5x : y=5x --> x=5y
solve for y: y=1/5 x
use inverse notation: f^-1(x)=1/5 x
what is the vertical shrink by a factor or 1/6
Answer:
.
Step-by-step explanation:
Answer:
Step-by-step explanation:
A vertical compression (or shrinking) is the squeezing of the graph toward the x-axis. • if k > 1, the graph of y = k•f (x) is the graph of f (x) vertically stretched by multiplying each of its y-coordinates by k.
I need help with this problem ASAP
Answer:
[tex]x^2\sqrt{x+5} -2\sqrt{x+5}[/tex]
Step-by-step explanation:
use foil
[tex]x^2\sqrt{x+5} -2\sqrt{x+5}[/tex]
cannot be simplified any further so it's the answer
BRAINLIEST ANSWER!! ASAP!
Answer:
w=36
Step-by-step explanation:
to get the perimeter you add all sides.
w+w+2w+6+2w+6=228
6w+12=228
6w=216
w=36
length= 2(36) +6
length= 78
width= 36
If it's wrong, I apologize honestly! Answer: 91
Step-by-step explanation:
2w+6= 2(?)+6
If the perimeter is 288, then we have to find what's the closest to it. So let's try 91. 2 ×91= 182 , so it's going to be 182 +6, which equals 188. Remember if the w is 100 the w in the width is going to be 100 also, so 188 + 100= 288 glad I could help!
BRAINLIEST PLEASE HELP DUE IN 1 HR AND 30 MIN (22-45)
Step-by-step explanation:
Okay, don't panic. Use M-a-t-h-w-a-y. It's online and it can help with all of these problems. <3 I currently have my own OVERDUE math test to do, so I would do this all but I'm time-tight too! aha
(2x+5)−23=10 can u guys help me out please
Answer:
(2x+5)−23=10
2x - 28 = 2 • (x - 14)
2=0
Add 14 to both sides of the equation :
x = 14
Step-by-step explanation:
X=14
Answer: 14
Combine like terms
sadmep
1. The slope is 1/2 if I’m wrong please correct me!!
2. What’s the y-intercept B? MARKING BRAINLIEST
⚠️⚠️⚠️⚠️⚠️⚠️
5^3 and that evaluated is 125
Step-by-step explanation:
slope is
[tex] \frac{1}{2} \\ [/tex]
equation of that line is
[tex]y = \frac{1}{2} x + 5 \\ [/tex]
and y intercepts that line at point (0,5). x=0 and y=5
write a quadratic formula or expression for this:
The product of a certain whole number and four more than that number is 140, write a quadratic expression / formula and find the number.
Answer:
number is 10
Step-by-step explanation:
let n be the number, then 4 more than the number is n + 4, thus
n(n + 4) = 140 , that is
n² + 4n = 140 ( subtract 140 from both sides )
n² + 4n - 140 = 0
Consider the factors of the constant term (- 140) which sum to give the coefficient of the n- term (+ 4)
The factors are + 14 and - 10 , since
14 × - 10 = - 140 and 14 - 10 = + 4 , thus
(n + 14)(n - 10) = 0 ← in factored form
Equate each factor to zero and solve for n
n + 14 = 0 ⇒ n = - 14
n - 10 = 0 ⇒ n = 10
Since n is a whole number the the required number is 10
share 50 marbles in the ratio 2:3 between Alex and joshua.How many marbles does each boy receive?
For a field trip 5 students rode in cars and
the rest filled three buses. How many
students were in each bus if 107 students
were on the trip?
Answer: 52 students were in the bus.
Step-by-step explanation: First, you start with the equation:
9x+4=472
Since four students rode in cars, you want to eliminate this part of the problem to find how many students actually rode in the buses.
So you would subtract 4 from both sides and get: 9x=468
Finally, you would divide both sides by 9 and get 52 students on each bus
Is 4 a solution to the compound inequality x>0 and x<7
Answer:
Yes
Step-by-step explanation:
since this inequality can be represented by 0<x<7. And by absolute value form
|2x-7|< 7. As you can see 4 is greater than zero and less than 7.
Tim bought some avocados that were $0.72 each. The total cost of the
avocados was $5.76. How many avocados did he buy? (just put the
number)
Answer:
8
Step-by-step explanation:
Which whole number property is represented?
10+ 0 = 10
Answer:
10
Step-by-step explanation:
I NEED HELP!!!!!!!!!!!!!!!!!!!4/7X+ 5/14X= 39
The solution is _____
Answer:
x=42
Your welcome!
Answer:
x=42
Step-by-step explanation:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
4/7*x+5/14*x-(39)=0
Simplify 5/14
((4/7• x) + (5/14 • x)) - 39 = 0
Simplify 4/7
4 5x
((— • x) + ——) - 39 = 0
7 14
Find the Least Common Multiple
The left denominator is : 7
The right denominator is : 14
Number of times each prime factor
appears in the factorization of:
Prime
Factor Left
Denominator Right
Denominator L.C.M = Max
{Left,Right}
7 1 1 1
2 0 1 1
Product of all
Prime Factors 7 14 14
Least Common Multiple:
14
Calculate multipliers for the two fractions
Denote the Least Common Multiple by L.C.M
Denote the Left Multiplier by Left_M
Denote the Right Multiplier by Right_M
Denote the Left Deniminator by L_Deno
Denote the Right Multiplier by R_Deno
Left_M = L.C.M / L_Deno = 2
Right_M = L.C.M / R_Deno = 1
Calculate multipliers for the two fractions
Denote the Least Common Multiple by L.C.M
Denote the Left Multiplier by Left_M
Denote the Right Multiplier by Right_M
Denote the Left Deniminator by L_Deno
Denote the Right Multiplier by R_Deno
Rewrite the two fractions into equivalent fractions
Two fractions are called equivalent if they have the same numeric value.
For example : 1/2 and 2/4 are equivalent, y/(y+1)2 and (y2+y)/(y+1)3 are equivalent as well.
To calculate equivalent fraction , multiply the Numerator of each fraction, by its respective Multiplier.
L. Mult. • L. Num. 4x • 2
—————————————————— = ——————
L.C.M 14
R. Mult. • R. Num. 5x
—————————————————— = ——
L.C.M 14
Adding up the two equivalent fractions
Add the two equivalent fractions which now have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
4x • 2 + 5x 13x
——————————— = ———
14 14
13x
——— - 39 = 0
14
Subtracting a whole from a fraction
Rewrite the whole as a fraction using 14 as the denominator :
39 39 • 14
39 = —— = ———————
1 14
Equivalent fraction : The fraction thus generated looks different but has the same value as the whole
Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator
Adding up the two equivalent fractions
13x - (39 • 14) 13x - 546
——————————————— = —————————
14 14
Pull out like factors :
13x - 546 = 13 • (x - 42)
13 • (x - 42)
————————————— = 0
14
When a fraction equals zero ...
Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.
Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.
Here's how:
13•(x-42)
————————— • 14 = 0 • 14
14
Now, on the left hand side, the 14 cancels out the denominator, while, on the right hand side, zero times anything is still zero.
The equation now takes the shape :
13 • (x-42) = 0
Solve : 13 = 0
This equation has no solution.
A a non-zero constant never equals zero.
Solve : x-42 = 0
Add 42 to both sides of the equation :
x = 42
Please Give me Brainliest
if any of you know how to do this pls help :)))
Answer:
y=3/5,6
Step-by-step explanation:
Split the second term in 5{y}^{2}-33y+185y2−33y+18 into two terms.
5{y}^{2}-3y-30y+18=05y2−3y−30y+18=0
2
Factor out common terms in the first two terms, then in the last two terms.
y(5y-3)-6(5y-3)=0y(5y−3)−6(5y−3)=0
3
Factor out the common term 5y-35y−3.
(5y-3)(y-6)=0(5y−3)(y−6)=0
4

Solve for yy.
y=\frac{3}{5},6y=53,6
Answer:
y=3/5,6
Step-by-step explanation:
(5y-3)(y-6)=0
5y-3=0 y-6=0
y=3/5 y=6
Find all the values that make it true
Hope this helps! :)
A conjecture and the flowchart proof used to prove the conjecture are shown.
Given: A B C D is a parallelogram. Prove: Angle 1 is supplementary to angle 3. Art: Parallelogram A B C D. Ray D B is drawn and is extended past vertex B. The ray forms an interior angles A D B and D B C and an exterior angle labeled as 3, adjacent to angle D B C. Angle A D B is labeled as 1, and angle D B C is labeled as 2.
Drag an expression or phrase to each box to complete the proof.
Answer:
1. Definition of parallelogram
Step-by-step explanation:
1. Definition of parallelogram
2. Angle Congruence Postulate
3. m<2 + m<3 =180
4. m<1 + m<3 =180
5. Definition of supplementary
∠1 is supplementary to ∠3 by the Definition of supplementary angles
What are supplementary angles?Two angles whose sum is 180° are called supplementary angles. If a straight line is intersected by a line, then there are two angles form on each of the sides of the considered straight line.
Prove: Angle 1 is supplementary to angle 3.
Given information as; ABCD is a parallelogram.
Proof:
∠1 = ∠ADB
∠2 = ∠DBC
∠3 = the exterior angle adjacent to angle D B C.
Statement Reason
∠2 is supplementary to ∠3 Linear pairs
m∠2+m∠3=180° Definition of supplementary angles
m<1 + m<3 = 180 Alternative interior angles
m∠1+m∠3=180° Substitute property of equality
∠1 is supplementary to ∠3 Definition of supplementary angles
Therefore, we can conclude that ∠1 is supplementary to ∠3 by the Definition of supplementary angles.
Learn more about supplementary angles here:
https://brainly.com/question/2882938
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Mark wants to fence 4 rectangular gardens, each with a length of feet and a width of feet. What is the total length of fencing Mark needs to surround all 4 gardens?
Answer:i need more explaining
Step-by-step explanation:
The simpledt form of the decimal is 0.84 as a fraction is?
The school's Environmental Science Club has $500 of funds. Each time they go on a field trip, it costs
them $80. Write an algebraic expression that represents the money the club has after going on field
trips. Use the Math equation tool va to answer the question.
Given:
Total fund = $500
cost of each trip = $80
To find:
The an algebraic expression that represents the money the club has after going on field trips.
Solution:
Let x be the number of field trips.
Cost of 1 field trip = $80
Cost of x field trip = $80x
We have, Total fund = $500.
So, the money the club has after going on field trips is
[tex]\text{Remaining money}=500-80x[/tex]
Therefore, the money the club has after going on field trips is $(500-80x).
the point (x,y) lies on the line y=x+2. the distance from p(1,0) to (x,y) is represented by d. write d as an expression in terms of x.
Answer:
Step-by-step explanation:
girl im confused too:/