There are 45 erasers in the box and the total number of writing pencils is 20.
What is a quadratic equation?
Any equation of the form where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.
We have,
for every 4 pencils, there are 9 erasers and there are 25 more erasers than pencils in a box
erasers are in the box:
pencil/erasers = pencil/erasers
Let's consider x for pencils and y for the erasers
4/9 = x/25 + x
9x = 100 + 4x
5x = 100
x = 100/5
x = 20
there are 25 more erasers than pencils in a box
so, 25 + x = 25 + 20 = 45
there are 45 erasers in the box
Hence, there are 45 erasers in the box and the total number of writing pencils is 20.
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multiple choice question pls help!
5 people shared 2 pizzas how much do they get
Answer: 2 and a half slices
Step-by-step explanation: 5/2 is 2.5
Please please can someone help me asap thank you
Answer:
Answers bellow
Step-by-step explanation:
FIGURE A
Decreasing by 1/4 =25%
Figure B
Increase by 1/5 = 20 %
Page 2
b The amount of sunny days this year is 75% of the amount of sunny days last year
c The amount of houses sold this month is 150 % amount of houses sold last month
d The runner's time to complete this marathon was 110% he needed to complete the last marathon(not sure about that one )( it's either 90 % or 110)
y=−x+2 y=3x−4 khan
Answer: 0
Step-by-step explanation:
2y -3x - 4 = 0
Subtract 2y from both sides of the equation.
-3x - 4 = -2y
Add 4 to both sides of the equation.
-3x = -2y + 4
Divide each term by -3 and simplify
Solve for a
a³ = 100
Answer: 4.641588833612779
Step-by-step explanation:
By using a calculator I was able to find the question answer. I am hoping this was the answer you needed. I hope I helped! :)
two three digit numbers are formed using the same integers and then when they are added they form another three digit number with the same integers find the added number
Answer:
I just cannot find it, so I appologize to the author. ... 2. Sum of all the numbers which can be formed by using the digits (repetition being ... Same is true for the other two digits. ... One more tip: when we add up all the numbers, we can start with the ... (1+5+8)/3 * 111 - another way to write 3-digit number formed from "average
Step-by-step explanation:
The fare for taxi journeys in a certain town is $2.00 plus $1.00 for each kilometre. Using this information, estimate: (i) The fare for a journey of 3.5 km. (ii) The distance travelled if the fare was $6.00
Answer:
Step-by-step explanation:
Since the journey initially costs $2 (this will be our y-intercept), and the variable (x) is $1 for every additional kilometer. This can be modelled as...
y=1x+2
(i) if we want to know the cost of what 3.5 km would cost, we simply plug it into our equation...
y=1(3.5)+2
Answer: $5.5
(ii) For this question you can set the y value equal to 6 and plug in a random number for x until you get 6 on both sides. In this case...
6=1x+2
6=1(4)+2
The distance traveled if the fare was $6 is 4km
I hope this helps you! When I was younger I used to use this site for help and now I'm paying it forward!
Show BOTH distribution and FOIL to find the product of LaTeX: (3x - 2) and (2x + 6). also explain
Answer:
(3x-2)=1x (2x+6)=8x
Step-by-step explanation:
WHAT IS THE RANGE FOR THIS GRAPH?
PLEASE HELP
Answer:
[0,5] or 0≤ y≤ 5
Step-by-step explanation:
Not 100% certain but all the values are included even though there is an open circle
what type of association is there ??
Answer:
Negative because the dots travel down away from the positive area
6. True or false: A compass contains a magnet that responds to the geomagnetic field of
earth
The correct answer is true
Can someone help???!!!
What is a W-2? ОА. A tax form given to me by my employer each tax year to show my earnings and taxes withheld. ов. A tax form I fill out when I get my job to show my employer how many deductions I will be claiming on my taxes. OC. The tax form I fill out when I have to do my taxes. D. A tax form used by my parents to claim me on their income tax.
Answer:
A) A tax form given to me by my employer each tax year to show my earnings and taxes withheld.
Jamal has 16 marbles. Zing has 9. How many fewer marbles does Zing
have than Jamal?
Answer:
7
Step-by-step explanation:
16 - 9 = 7
Answer:
7
Step-by-step explanation:
16-9=7
DhhdhcdchxKhkkjdchjcjjdhc
Hello everybody please help me (this is 6th grade math)
Answer:
Look at the image.
Step-by-step explanation:
Given the vertex of a parabola is (-3,1) and also contains the point (-4,-1). State the exact equation of the parabola in vertex form, show all your work.
Answer:
y = -2(x + 3)^2 - 1
Step-by-step explanation:
The vertex equation of a parabola is y = a(x - h)^2 + k. If the vertex here is (-3, 1), then this equation becomes y = a(x + 3)^2 + 1.
Knowing that the graph passes through (-4, -1), we let y = -1 and x = -4, obtaining:
-1 = a(-4 + 3)^2 - 1, which must be solved for a:
-1 = a - 1. Therefore, a = -2, and the exact equation of this parabola is:
y = -2(x + 3)^2 - 1
Dollhouse furnishing come in different sizes depending on the size of the doll house. Whyyy ratio of the size of the dollhouse item to the size of the larger item dollhouse piano: 1 3/4 in. High real piano: 3ft 6in. High
Answer:
1: 24
Step-by-step explanation:
The ratio = size of smaller object/size of larger object = Height of dollhouse piano, h/height of real piano, H
H = 3 ft 6 in = 12 in/ft × 3 ft + 6 in = 36 in + 6 in = 42 in
h = 1³/₄ in = 7/4 in
So ratio = h/H = 7/4 in ÷ 42 in = 7/4 in × 1/42 in = 1/4 × 1/6 = 1/24
So ratio = h/H = 1/24 ⇒ h:H = 1: 24
6.5. Does Spending Measure Welfare? Suppose a community spends $1 million on salaries and equipment for its police department. Because it believes that citizens are now more law-abiding, the community decides to cut back on the number of police it employs. As a result, the community now spends $800,000 less on police officers. The crime rate remains the same.
a. What happens to measured GDP?
b. Does GDP accurately reflect welfare in this case?
Discuss the underlying issue that this example poses.
Answer:
(a) Measured GDP will decrease by $200,0000
(b) No
Step-by-step explanation:
(a) Gross Domestic Product (GDP) is the total value in monetary terms of al the goods produced in a geographic location.
There will be a $200,000 decrease in the value of the GDP of the community as a result of reduction in the community spending from $1 million to $800,000.
(b) Generally, GDP is not a true indicator of welfare, likewise in this case, GDP does not reflect the welfare of the community.
There's a decrease in the community spending from $1 million to $800,000 but there's an increase in the welfare of the community as a result of decrease in crime rate.
6v^2-6v-660
Factor the polynomial completely
Answer:
[tex]6 (v-11) (v + 10 )[/tex]
Step-by-step explanation:
i dont have any
AnsweR 6(V-11)(V+10)
Step-by-step explanation:
step1: after factoring out 6 we have :6v^2-6v-660=6(v^2-v-110)
step 2:identify constants b and c. b+-1 and c=-110
step3:find out all pairs of -110.
-1,110 1,110
-2,55 2,-55
-5,22 5,-22
-10,11 10,-11
step4: place 10 and 11 into place holders
x^2-x-110=(x+-)(x+-)
x^2-x-110=(x+10)(x-11)
5. A right triangle has a hypotenuse that is 13 cm and a leg that is 4 cm.
Determine the length of the unknown leg. Round to the nearest tenth.
Answer:
ok so square 13 cm, and square 4 cm. then you will add those together then take that number and find the square root plz mark brainliest
Can Someone help me please I don't understand
Answer: 55 Gallons.
Step-by-step explanation: you can trust me on this, and I promise it will be correct.
1-cosx/1+cosx=secx-1/secx+1
Verify the identity. I tried all identities that I could, but could not find how it worked. Can you show me how to verify with all steps?
I usually do not ask on brainly, but I've tried everything else and still got nothing.
Currently in Algebra 2 and in the 9th grade.
Answer:
Sorry cannot help you, I'm only in year 8 (7th grade if I'm correct), and am horrible at Algebra. I'm sorry :(
a b c d ????????? which one is it please hurry im timed . high points
Answer:
0
Step-by-step explanation:
X is greater than -4 which leads to having to technically add 4 getting you to 0.
-4, -3, -2, -1, **0**
I hope this is correct and helps you!!!!
what is the diameter of the circle below? use 2.14 for pi
Answer:
4.8
Step-by-step explanation:
d = 4.8
The diameter is the WHOLE line for the circle and it's given
Find the radius of the button
Answer:
the radius is 14
Step-by-step explanation:
... ....ur welcome.........
since the diameter of it is 28 the radius is half of it
PLEASE HELPLPPPpppppp
Answer:
40
Step-by-step explanation:
it could be 40 all I did was subtract 80 from 120 but ¡dk wasn't really good in geometry
Which has the greater value, -4 or -5?
please step by step
Answer:
-5 is the greater value
Step-by-step explanation: because they are both negative but if the other one is positive and the other one is negative, the positive is the greater value.
Avery deposited 1250 in a new savings account. Which amount is closest to the balance of the account at the end of three years
Answer: $1,467.80
Step-by-step explanation:
The formula for the future value given annual compounding is:
= Amount * ( 1 + rate) ^ number of years
The amount after 3 years at 5.5% is therefore:
= 1,250 * ( 1 + 5.5%)³
= 1,250 * 1.174241375
= $1,467.80
answers r
6 units
7 units
8 units
9 units
Answer:
9 units
Step-by-step explanation:
Answer:
6 units
Step-by-step explanation:
(b) Write down the coordinates of the turning point of y = x^2 - 2x - 4
Answer: [tex](1,-5)[/tex]
Step-by-step explanation:
Given
Curve is
[tex]y=x^2-2x-4[/tex]
At the turning point of the curve, the slope will be zero.
Differentiate the curve
[tex]\Rightarrow y'=2x-2[/tex]
Substitute 0 for [tex]y'[/tex]
[tex]\Rightarrow 2x-2=0\\\Rightarrow x=1[/tex]
[tex]\therefore y=1^2-2\times 1-4=-5[/tex]
[tex](1,-5)[/tex] is the turning point