Answer: x = 5
Step-by-step explanation:
The area of a rectangle is the length times the width. Since the dimensions are given as functions of x, youre going to have to use FOIL to combine them, then set that answer equal to the given value of 72.
l*w = (x+3)*(x+4) = x^2 + 7x +12 = 72
Subtract 72 on both sides. There is a reason why we'll do this instead of subtracting 12. The quadratic formula will help us to solve for x.
x^2 + 7x - 60 = 0
Apply the quadratic formula
[tex]\frac{-7 (+/-)\sqrt{7^2-(4)*(1)*(-60} }{2*1} =\frac{-7(+/-)17}{2}[/tex]
We cant have a negative x value because that would result in negative dimensions and a negative area, which is impossible in this context. So you want to add the 17 instead of subtracting it.
x = 5 and x = -12
An alternate way is just factoring the trinomial to:
(x+12)(x-5) = 0
I NEED HELP I WILL MARK BRAINLIEST!!!
Find the slope of the following graph.
Answer:
1/2 or one half
Step-by-step explanation:
I did this question
Is 9x negative or positive?
-9x + 17x + -8x
Answer:
-9x is negative but the answer of the whole problem would be 0.
A woman can do a job in 9 days and her daughter can do the same job in 16 days. They start working together, but after 4 days the daughter leaves and the woman finishes the job alone. How many days did it take her to finish the job alone?
Step-by-step explanation:
ans...9days.......,........
if you form a triangle from three given angle measures, do you always get a unique triangle, or more than one triangle?
Which value from the set (54,45,27,6) makes 54/x = 9 true?
Answer:
x = 6
Step-by-step explanation:
54/6 is 9. This is the only correct one.
Hope it helps!
PLEASE HELP ME I WILL GUVE BRAINLIEST I REALLY NEED HELP
A six-sided fair die and an eight-sided fair die are rolled together. What is the probability of getting numbers whose sum is a multiple of 3? A 1/18 B 1/4 C 1/3 D 4/9 E 2/3
Answer:
C 1/3
Step-by-step explanation:
The numbers on a 6-sides die are 1, 2, 3, 4, 5, 6.
The number of an 8-sided die are 1, 2, 3, 4, 5, 6, 7, 8.
All the possible sums are:
2, 3, 4, 5, 6, 7, 8, 9,
3, 4, 5, 6, 7, 8, 9, 10,
4, 5, 6, 7, 8, 9, 10, 11,
5, 6, 7, 8, 9, 10, 11, 12
6, 7, 8, 9, 10, 11, 12, 13
7, 8, 9, 10, 11, 12 ,13, 14
The multiples of 3 are shown in bold and italic.
There are 48 possible sums.
16 sums are multiples of 3.
p(numbers whose sum is a multiple of 3) =
(number of outcomes that are multiples of 3)/(total number of possible outcomes)
p(numbers whose sum is a multiple of 3) = 16/48
p(numbers whose sum is a multiple of 3) = 1/3
Answer: C 1/3
The perimeter of the square below is 116 m. What is the value of a?
5a +9
(5a+9)4=116
20a+36=116
20a=116-36
20a/20=80/20
a=4
Jaden is participating in a 4-day cross -country biking challenge. He biked for 56, 60, and 47 miles on the first three days. Over the four days he averaged ( arithmetic mean ) 57 miles per day. How many miles did he bike on the last day?
Answer:65
Step-by-step explanation:
Determine how (if possible) the triangle can be proven similar:
Answer:
Not similar
Step-by-step explanation:
You can only find the vertical angles at the intersection.
So, you know they share one angle.
That is not enough information to prove similarity.
Therefore, I'd say they're not similar.
The Kings Dominion Gold Pass costs $89. If you buy it the first week of
December you will get a 15% discount. What will your total cost be with the
discount?
Answer:
$75.65
Step-by-step explanation:
1 - .15 = .85 = 85% of the price is what you pay
89 • .85 = $75.65
como seria una ecuacion de (2,3) si la pendiente es -2
Answer:
Hola, antes de dar la respuesta quisiera recomendarte una app llamada m a t h w a y (sin espacios) esto te va a ayudar con preguntas sobre matematica y super rapido.
Step-by-step explanation:
(2,3) pendiente de -2
1. Usa la fórmula de la ecuación de la recta para
hallar b
y = mx + b
2. Substituye el valor de m, x y "y" en la ecuacion
3 = (-2) · (2) +b
3. Calcula para hallar el valor de b
b = 7
4. Ahora con el valor de b, calcule de nuevo
y = mx + b
3 = -2x +7
Espero esto haya ayudado en algo, sino puedes intentar buscando en el sitio que recomende.
13 × 20 – 15 × 9 + 20 × 7 – 6 × 15.
Answer:
the answer is 175
Step-by-step explanation:
have a good day
Answer:
The correct answer is 175.
Step-by-step explanation:
[tex]13 * 20 - 15 * 9 + 20 * 7 - 6 * 15\\[/tex]
= [tex]260 - 135 + 140 - 90[/tex]
= [tex]400 - 225[/tex]
= 175.
15+26-13
Random okay have a great day
Answer:
28
Step-by-step explanation:
41-13=28
you too have a great day ♡
Find the missing number (i.e. the coefficient in front of x) so that the equation has no solutions: □x + 4 = 4x + 15
Answer:
X=8
Step-by-step explanation:
I am not sure how to do this.
Answer:
Hopefully this can help
Step-by-step explanation:
jack wanted to leave a 15% tip on a $36.00 bill. How much would he leave for a tip
A. $7.20
B. $5.40
C. 3.60
D. $3.96
Answer:
B = $5.40
Hope this helps!
Step-by-step explanation:
Find the missing value so that the two points (-1, -1) and (x, 1) have a slope of 217.
6
7
10
12
Answer:
6
Step-by-step explanation:
you needed to make a graph and then find the (-1,-1) and then move two spaces to the right and then seven up and you get (6,1)
hope this helped
Complete the following ratio table so that each pair represents the same rate.
1
5
2
10
3
15
4
20
5
25
Answer:
Step-by-step explanation:
A principal of $2900 is invested at 6.25% interest, compounded annually. How much will the investment be worth after 14 years?
Answer:
$6774.4
Step-by-step explanation:
Given data
P=$2900
r= 6.25%
t= 14 years
A=???
The compound interest formula is given as
A=P(1+r)^t
substiute
A= 2900(1+0.0625)^14
A= 2900(1.0625)^14
A= 2900*2.336
A= $6774.4
Hence the final amount is $6774.4
Plz help due tomorrow
Answer:
1/2
Step-by-step explanation:
The problem is asking for the coefficient of the sum of the two expressions, which are 2/3 and -1/6.
2/3 + -1/6 = 1/2, therefore, the answer is 1/2.
pleaseeeeee someone help i'm in tears
Answer:
the correct answer is 6
Step-by-step explanation:
only reasonable answer
Can anyone help me with this
Answer:
No ....................
30. A mom bought her kids 3 cartons of milk
for $1.25 each and 6 doughnuts. The total
cost was $6.90. Write an equation to
determine the cost of a doughnut.
Answer:
x = (1.25 * 3 - 6.90) divided by 6
Step-by-step explanation:
this will get the price of all the milk, then take it out of the total price, then divide it by 6 because there are 6 donuts, this will give you the price of 1 donut
Answer:
$3.15
Step-by-step explanation:
$1.25x3=$3.75
$6.90-$3.75=$3.15
find the value of each expression for n = 2.
Answer:
1. 22
2. 22
3. 28
Step-by-step explanation:
Substitue the n in each expression with two, then solve the problem for the value
Pl help it’s for a grade I will give you a Brainly if right
Answer: a= (4x-1)(6x+9)
Step-by-step explanation:
area= length x width
Answer:
below
Step-by-step explanation:
24 x 2 + 30 x − 9
HIIII
anyone know what's 10.00 - 6.79 is if you do please explain how'd you got your answer it'll make me understand more (: - Liz ( kim's little sister lol )
Answer:
3.21
Step-by-step explanation:
got it from googIe
Answer:
I got 3.21 by subtracting them
10.00
-6.79
____
3.21
Determine whether the graph shows a positive correlation, a negative correlation, or no correlation. If there is a positive or negative correlation, describe its meaning in the situation.
a. no correlation
b. positive correlation; as time passes, the birth rate increases.
c. positive correlation; as time passes, the birth rate decreases.
d. negative correlation; as time passes, the birth rate decreases.
Answer:
a
Step-by-step explanation:
Answer:
I think D, Correct me if I'm wrong!
Step-by-step explanation:
Which equation represents the graphed line?
y
6
4
NO
O
2
4
6
A. y - 1 = -2(x - 3)
O
B. y - 1 = -2(x + 3)
C. y + 1 = -2(x - 3)
O D. y + 1 = -2(x + 3)
Answer:
D
Step-by-step explanation:
someone plz solve this quickly!
Answer:
Tyler made an error on step 2
The correct answer should be -20x+33
