Answer:
Natalie is 12 years and Fred is 28 years
Step-by-step explanation:
lets assume Natalie's age is X and Fred's age is Y
From the first sentence: X+Y = 40
From the second sentence: Y + 4X = 76
lets rearrange the equations
X+Y =40 ....... equation 1
4X+Y=76........ equation 2
To solve both equations, we will have to look for a way to eliminate one of the unknown to leave us with one unknown. since there are two +Y in both equations, we can subtract both equations to eliminate Y. Please note that whatever you do to one of the unknown in this equations applies to all other numbers & alphabets
So: 1. X - 4X = -3X
2. Y - Y = 0
3. 40 -76 = -36
writing the equation as one will be -3X = -36
X = 12
Put X = 12 into any of the equation
By putting X as 12 into equation 1 : 12 + Y = 40
Y = 40 -12 =28
Recall that Natalie is X and Fred is Y
Therefore Natalie is 12 years and Fred is 28 years
be
To crosscheck put in the gotten answers into the equations
X+Y =40 ....... 12 + 28 = 40
4X+Y=76........ 4(12) + 28 = 76
what is - 2 - (- 11)
Answer:
9
Step-by-step explanation:
Answer:
9
Step-by-step explanation:
M A T H W A Y
PLEASE HELP IT'S DUE IN 15 MINUTES!! WILL GIVE BRAINLIEST!!!!
#11 Find the slope of a line
that passes through the
points (-1, -3) and (-6,5)
75 students received a coupon. These students represent 5% of the total students at Seven Lakes JH. How many total students attend Seven Lakes JH?
Michael buys a ball for 5.50 and a flashlight for 3.65. If he has 10.00 how much change we’ll he receive
Answer:
.85 cents
Step-by-step explanation:
A) 8= d/p
B) p= 8d
C) d=8p
D)=8/p
Answer:
B) p= 8d
Step-by-step explanation:
Each day she reads that many pages.
When u multiply 8 x the number of days u get that many pages.
Please give me Brainliest
OMG!! U LIKE BTS!!! AND U LIKE KPOP!!!!
HELP ME ASAP PLEASEEEEE
Step-by-step explanation:
5√36 = 5× 6 = 303√2 + 3×2√2 = 3√2 + 6√2 = 9√24 - 2√4 = 4 - 2× 2 = 4 - 4 = 0plz mark my answer as brainlist.
Hope this will be helpful to you .
bb yftrxeybvcregbjgcrtxcyhvliygfyctydctgvfyufytdxrxr
Answer:
these are letters from the English alphabet
hope this helps....
PLEASE HELP! WILL GIVE BRAINLIEST!
"a piece of machinery valued at $175,000 depreciates at 10% per year by the fixed rate method. After 12 years, what is the value of the machinery?"
Answer:
$49425.1688842
Step-by-step explanation:
Use formula: v=c*(p^t), where v is the price now, c is the cost price, p is the 100-the depreciation percentage and t is the time/years passed)
0.9¹²(175000)
0.28242953648(175000)
49425.1688842
A department store sells a pair of shoes with an 87% markup.
If the store buys the shoes for $19.00, what is the markup price?
Answer:
35.53
Step-by-step explanation:
19.00x 87%=16.53
16.53+19.00= 35.53
A town has an annual growth rate of 2%. In 1970, the population was 250 people. What was its population in 2020?
Answer:
In 2020 the population would be 673.
Step-by-step explanation:
Giving the following information:
Current population (PV)= 250
Growth rate (g)= 2% annualy
Number of periods (n)= 2020 - 1970= 50 years
To calculate the number of people in 2020, we need to use the following formula:
FV= PV*(1+g)^n
FV= 250*(1.02^50)
FV= 672.89 = 673
Pls I just want to get good grades.
2(a-7)=a+4
15 6
PLS HELPPPPPPPPPPP
Answer:
a = 18
Step-by-step explanation:
2(a-7)=a+4
Distribute 2 into left side: 2a -14 = a + 4
subtract a from both sides 2a-a-14 = a+4-a
Simplify: a - 14 = 4
Add 14 to both sides: a - 14 + 14 = 4 +14
Simplify: a = 18
If wanted, plug a into original to double check work:
plug in: 2 (18-7) = 18+4
do parenthesis first: 2 (11) = 18+4
do multiplication : 22 = 18+4
additions: 22 =22
a = 18 is correct.
Answer:
A=18
Step-by-step explanation:
2(a-7)=a+4
2a-14=a+4
add 14 to both sides
2a=a+18
subtract a from both sides
a=18
Can somebody help me with this question will mark brainliest.
Answer: 9/12
Step-by-step explanation:
PLS HELP I WILL REALLY APPRECIATE
Answer:
$2547 per month
Step-by-step explanation:
849 * 3 = 2547
Answer:
2547
Step-by-step explanation:
Hey I really need help with this question please help
Answer:
let me look
Step-by-step explanation:
what is the y-value when x=1
a. 2
b. 1
c. 3
d. 4
I'll mark brainliest.
Audra makes and sells bracelets. It costs her $8 to make a bracelet, and she markups up the price by 210%. Audra wants to have a sale, so she marks all of her bracelets 20% off the normal selling price. What will be the price of each bracelet during the sale? Audra makes and sells bracelets. It costs her $8 to make a bracelet, and she markups up the price by 210%. Audra wants to have a sale, so she marks all of her bracelets 20% off the normal selling price. What will be the price of each bracelet during the sale?
Answer:
The final selling price is .$13.44
Hope this helps!!
Step-by-step explanation:
Audra makes 20% off the normal selling price. So The price of each bracelet during the sale is $13.44
answer that pls ty (ﾉ◕ヮ◕)ﾉ*:･ﾟ✧
ありがとうと答えてください (ﾉ◕ヮ◕)ﾉ*:･ﾟ✧
Answer:
1= 23
2= 0.5
3= 1.45
4= 0.07
Step-by-step explanation:
(hope this helps can i plz have brainlist :D hehe)
Point T is located at (-2,-2) on the coordinate plane. Point T is reflected over the
y-axis to create point T'. What ordered pair describes the location of T'?
Answer:
(2,-2)
Step-by-step explanation:
When over the y-axis you change the x axis to the opposite of either neg. or positive
which is an incorrect rounding for 53.864
53.87,54,53.9,50
Answer:
53.87
Step-by-step explanation:
Answer:
D. 50
Step-by-step explanation:
All of the other ones are correct.
rounded to the nearest 100th place, it's: 53.87
rounded to the nearest 10th place its: 53.9
rounded to the nearest whole number its: 54
Brainliest pls. really need it
hope you have a nice day
help pls asap i’ll mark as brainliest if correct :)
Answer:
100 chocolate bars
Step-by-step explanation:
30 ÷ 3 = 10 so you need to times 10 by 10?
hope that helps!
Choose the polynomial that is written in standard form.
a. x + 4x5 + 10x3
b. x4 + 4x2 + 8x
c. −9x4 + 4x6 + 10x2
d. x4 + 4x4 + x6
Answer:
b. x^4 + 4x^2 + 8x
Step-by-step explanation:
I took the test. Also the exponents need to be in descending order in order for the equation to be in standard form.
So b, starts with an exponent of 4, the decreased to just the x variable with an understood exponent.
Decreasing -> 4,2,(1)
Hope this helps :)
Answer:
B
Step-by-step explanation: took the test
If 9 avocados cost $5, how much do 18 avocados cost? (find unit rate then multiply by 18)
Answer:
For this problem, you could just multiply $5 by 2 OR you could divide $5 by nine to find your Unit Rate and then multiply that number by 18.
To celebrate 25 years in business, the furniture store is having a 25% off sale on all their furniture. Estimate the new price before tax of a table that costs $159.39.
Answer:
Step-by-step explanation:
159.39(1-25/100)
159.39(100-25)/100
159.39(75)/100
159.39(0.75)
$119.54
What is the equation of the line that passes through the point (8, 4) and has a slope
of 3/2?
Answer:
y = (3/2)x - 8 slope-intercept form
3x - 2y = 16 standard form
Step-by-step explanation:
Use the point-slope form of a line to do this problem.
[tex]y - y_{1} = m(x - x_{1} )\\[/tex]
In your case [tex](x_{1} , y_{1} ) = (8, 4)[/tex]
So. y - 4 = 3/2 ( x - 8)
multiply thru by 2
2y - 8 = 3(x - 8)
2y - 8 = 3x - 24
2y = 3x - 16
y = (3/2)x - 8 slope-intercept form
3x - 2y = 16 standard form
1. "Six less than trnce a number.
A 6 - 2x
A. 5y + 4
B. 2x - 6
C. 6x-2
D. 2 - 6x
2. "Five times the sum of a number and four."
B. 4(y + 5)
C. 5 + 4y
D. 5(y + 4)
3. Which is the correct translation of the given 2(m - 3)?
A. Twice difference of 3 and m.
C. Twice the difference of m and 3.
8. Twice the sum of m and 3.5
D. Twice the sum orm and 3.
4. "Ten less than thrice the a numbers
A. 10 - 3b
D. 3-10b
B. 3b - 10
C. 10b - 3
5. Given, m - 4, complete this: 4
A. minus
B. diminished by
a number
C. subtracted from
D. decreased by
6. "The raio di 7 and a number decreased by 2."
A. 7/(x-2)
B. (7/) - 2
C. 7X-2
D.7 -2/
7. "The difference of 10 and k divided by 4 yields to 2."
A. (10 - k)/4 = 2 B. 10 - (k/4) = 2 C. 10k/4 = 2
D. k - 10/4 = 2
8. "Four times the sum of 12 and y is equal to 60.
A. 4y + 12 = 60 B. 4 + 12y = 60 C. 4(12) + y = 60 D. 4(12 + y) = 60
9. All of the following are correct except
2x + 4; Twice a number
A. increased by B. added to
C. plus
D. more than
10. "8 times a number decreased by 13 becomes 3."
A. 8x + 13 = 3 B. 8x - 13 = 3
C. 13 - 8x = 3
D. 13 + 8x = 3
Answer:
this is your answer. thanks for points
Answer:
D
Step-by-step explanation:
Shelley's kitten weights 2 1/3 times as much as she did last year. She now weighs 21 ounces. What did the kitten weight a year ago?
Answer:
weight of the kitten last year = 9 ounces
Step-by-step explanation:
Let
x = weight of the kitten last year
Weight of the kitten this year = 2 1/3 * x = 21
7/3*x = 21
7/3x = 21
x = 21 ÷ 7/3
x = 21 × 3/7
= 63/7
x = 9 ounces
weight of the kitten last year = 9 ounces
$200 Principal at 3% for 5 years. Find the interest earned and the balance of the account.
Answer:
Interest earned: $30 Balance: $230
Step-by-step explanation:
Find a formula for the nth term of the arithmetic sequence a1=-17 a2=-12 a3=-7 a4=-2
Answer:
Step-by-step explanation:
Recursive formula
a1 = -17
a^n = a^n-1 + 5
Explicit formula:
a^n = -17 + (n-1) * 5