Answer:
a) There were 32 red pens and b) 16 blue pens.
Step-by-step explanation:
3:4
for 3:4 to be 2:1 we should add 5 in order for it to be 8:4 (2:1)
20 divided by 5 is equal to 4
8:4
8 times 4 is equal to 32
4 times 4 is equal to 16
The number of red pens that were there, in the end, is 32 pens while the number of blue pens that were there, in the end, is 16 pens
If the ratio of the number of red pens to the number of blue pens was 3: 4,
If 20 red pens are added into the box and the ratio of the number of red pens to the number of blue pens became 2:1, this means that the 5 is added to the original ratio to have:
(5+3): 4 = 8:4
The number of red pens in the end = [tex]8 \times \frac{20}{5}=8\times 4 = 32[/tex]
The number of red pens in the end = [tex]4 \times \frac{20}{5}=4\times 4 = 16[/tex]
Hence the number of red pens that were there, in the end, is 32 pens while the number of blue pens that were there, in the end, is 16 pens
Learn more here:
https://brainly.com/question/3796978
What is the factored form of z^2– 9?
Answer:
OR just 3
Step-by-step explanation:
z^2-9 becomes sqrt(z^2)=sqrt(9) becomes z=+-3
Three times a number w is less than 18.
Answer:
3w < 18
Step-by-step explanation:
To do 3 times if you put 3 against a variable that means to multiply. Since a number is unknown it turns into variable which is w in this case. Then less than 18 to do the less than symbol, think of them like crocodile they always eat the bigger number and since 3w is less than 18 the croc < eats 18. Thats just an easy way of remembering. Hope this helps :)
what is the area of the circle with a radius of 3 m?
Answer:
The area is around 28.27
Step-by-step explanation:
Answer:
the answer would be 0
Step-by-step explanation:
a circle has no sides so it would bacically be 3x0 witch equals 0 hope this helps and maybe brainlist?
Beth goes on holiday to Spain.
The exchange rate is £1 = €1.13
She changes £350 into Euros (€).
(a) Work out how many Euros she receives.
When Beth returns from holiday she changes €120 back into pounds.
The exchange rate is now £1 = €1.16
(b) Work out how many pounds (£) Beth receives.
Give your answer to the nearest penny
Answer:
A
Step-by-step explanation:
given: x+y=10 if x=-21, what is y?
Answer: y = 31
Step-by-step explanation: all you need to do is plug in the x
since x = -21 we can put: -21 + y = 10
now we add 21 to both sides giving us: y = 31
Answer:
(-21,22)
Step-by-step explanation:
x+y=10
x=-21
subtitue the x value
-21+y=2
solve for y
y=22
Then write your answer by ordered pair
(-21,22)
4) easy- solve for x
Answer: - 8
Step-by-step explanation:
x/4 - 5 = -7
=> x/4 = -2
=> x = -8
Answer:
x=−8
Step-by-step explanation:
Add 5 to both sides
x/4-5+5=-7+5
x/4=-2
4x/4=4(-2)
x=-8
(7x-8)(-1) PLEASE HURRY ITS A TIMED QUESTION !!!
Answer:
Is x a vairable? If x is a vairable, then your answer will be 56x. If x is not a vairable, and means a multiplication sign, then your answer will be 56.
what's a good app to use for solving geometry ?
Answer:
uhh I would say this one if people help u out atleats
Expand and simplify
(X+7)(x-9)
Answer:
X²+16x-63
Step-by-step explanation:
expand out the brackets to get:
X²+9x+7x-63
simplify:
X²+16x-63
Helpppppp mehhhhh (^0^)
e
ath!
0 of 8
3. Mark-up, Discount,
Change Assignment
POINTS
TODAY
POINTS
THIS WEEK
GAME
CREDITS
$ $
$
First try was incorrect
Belvedere goes to the store and buys a soccer ball for $50. The store
is running a discount of 10%. What is the price of the soccer ball after
the discount?
Answer:
$45 after the discount
Step-by-step explanation:
Set up a proportion.
[tex]\frac{x}{50} = \frac{10}{100}[/tex] $50 is the total amount and make the 10% a decimal
x(100) = 50(10)
100 = 500
100 ÷ 500
x = 5 <-- We have to subtract this amount from the total
$50 - $5 = $45 <-- total after the discount
Hope this helps!!
Pls help me, I'll give brainliest
on a scale of one to 100, your teacher crankiness is directly proportional to the number of students talking while she is talking, the teachers crankiness index is 5. What is her crankiness index when 6 students are talking?
Answer:
30 (random guess)
Step-by-step explanation:
Tell whether each equation has no solution, one solution, or infinitely many solutions.
3x-12=3x+1
What is the answer????please helpp
Which integer represents this situation?
A skydiver jumped out of a plane at an elevation of 1,600 feet.
0
1,600
-1,600
Answer: 1600 feet the second answer
hope this helped! :)
Answer:1600
Step-by-step explanation:
What is the radical form of 8½
1/3(c) when c = 64. What’s the answer using PEMDAS
Answer:
21.3 repeated
Step-by-step explanation:
Let's look at our equation
1/3c
We also have the number that c stands for, which is 64, so what we must do is replace c with 64.
1/3(64)
Now we have the equation 1 over 3 multiplied by 64, so multiply as is.
64 * 1 = 64
Therefore,
64/3
Now divide :
21.3 repeated
any help? (with photos)
Answer:
the area of the shape is 24
Step-by-step explanation:
NEED HELP PLSSSSSS HELP MEEE
Answer:
Step-by-step explanation:
0 quarter = 20 dimes
dime to quarter = divide by 20
quarter to dime= multiply by 20
4 quarters = ? dimes
4 x 20 = 80 dimes
0 dimes = ? quarters
0/20 = 0 quarters
5 dimes = ? quarters
5/20 = 0.25 quarters
Answer: SORRY I WISH I CAN HELP YOU BUT PLZ DON´T GET MAD PLZ
Step-by-step explanation:
BUT I DID FIGURE THE FIRST ANSWER IS 13
A family of 2 adults and 3 children went on holiday to Miami.
The family visited a theme park.
They paid a total of 322 dollars to go in.
The exchange rate was £1 = 1.84 dollars.
Change 322 dollars to pounds (£).
Answer:
£175
Step-by-step explanation:
Given the exchange rate was £1 = 1.84 dollars.
We are to change 322 dollars to pounds (£).
£1 = 1.84 dollars.
x = 322 dollars
Cross multiply
1.84 * x = 322
1.84x = 322
x = 322/1.84
x = 175
Hence 322 dollars in pounds will be £175
in anime testers it says "what is sasuke's most used jutsu" WHAT IS IY THERE ARE SO MANYYYYY
Answer:
chidori or fire ball jutsu
Step-by-step explanation:
Answer:
nice i like naruto
Step-by-step explanation:
Write the equation of the line in standard form of the line that passes through (-3, 9) and has a slope of 3.
Answer:ez just divise all
Step-by-step explanation:
A 10-meter ladder leans against the wall, it is 5 meters from the base of the wall. How high, h, does the ladder reach to the nearest tenth of a meter?
Answer:
did you figure out the answer because I need it please
Which expression is equivalent to -4x - 36?
A. 4(x - 9)
B. 2(2x - 18)
C. -2(2x - 18)
D. -4(x + 9)
D. -4(x+9)
For this you distribute the number outside the parentheses to both numbers inside.
A. 4(x-9)=
4x-36
B. 2(2x-18)=
4x-36
C. -2(2x-18)=
-4x+36
D. -4(x+9)=
-4x-36
Therefore, D is the answer
Heather invests $3572 in a retirement account with a fixed annual rate of 5% compounded 4 times per year what will the account balance be after 16 years
Answer:
$7910.3
Step-by-step explanation:
Given data
P=$3572
n=4
T=16 years
R= 5%
The compound interest is expressed as
A= P(1+r/n)^nt
Substitute
A=3572(1+0.05/4)^16*4
A=3572(1+0.0125)^64
A=3572(1.0125)^64
A=3572*2.21453241061
A=$7910.3
option D: 8 square root 3 cm
pls help
thanks
Answer:
is b
Step-by-step explanation:
Find the area of this composite figure.
Answer: ≈ 551.71 ft²
All work is shown in the picture.
Answer:
551,7
see in the picture, this composite figure is made up of a rectangle and 2 halves of a circle
=> the area of this composite figure = the area of a rectangle + the area of a circle
+) the area of the rectangle = 15.25 = 375
+) the area of the circle = (15/2)².pi = 56,25pi
=> the area of this figure = 375 + 56,25pi = 551,7
Name the constant in the expression:
3x + 5
please explain how I can solve problems like this
HELP AND YOU CAN GET THE CROWN
Answer:
g(r - 9) = r² - 18r + 89
Step-by-step explanation:
To evaluate g(r - 9), substitute p = r - 9 into g(p) , that is
g(r - 9) = (r - 9)² + 8 ← expand factor using aFOIL
= r² - 18r + 81 + 8
= r² - 18r +89