Answer:
X = -5
Step-by-step explanation:
3x - 15 = -30 You want to isolate tha variable
3x= -30+15 Add 15 to -15 in order to get rid of it. All you do to one side you do to the other, so you add 15 to 30
3x= -15
x= -15÷3 Divide x by 3 in order to get rid of the 3. Do it to the other side
x=-5
The cost of 15 oranges is $1. What is the cost of 5 dozen oranges?
Answer:
$4
Step-by-step explanation:
15/1=60/x
x=60/15 or 4
x=$4
Hope this helps plz hit the crown :D
Answer:
$4
Step-by-step explanation:
a dozen is 12 and you need 5 dozens so it is 60 oranges. 15×4=60. therefore it is 4
what is the solution 2x-y=4 -4+2y=-8
Answer:
x= −1 /2 , y−4
Step-by-step explanation:
Donell compared the hours students spent each day on social networks to the hours they spent on homework. His data is shown below. Which statements are true? Check all that apply.
2 dots plots. A dot plot titled Number of hours spent on social networks goes from 0 to 4.5. 0 has 3 dots, 0.5 has 5 dots, 1 has 2 dots, 2.5 has 4 dots, 3 has 3 dots, 3.5 has 1 dot. A dot plot titled Number of hours spent on homework goes from 0 to 4.5. 0 has 1 dot, 0.5 has 1 dot, 1 has 4 dots, 1.5 has 8 dots, 2 has 3 dots, and 4.5 has 1 dot.
The mean number of hours spent on each activity are equal.
There is a greater variability in the hours spent on social networks.
The average student spends more time on homework than on social networks.
The range for the number of hours spent on homework is greater.
Students are more consistent in the time spent on homework than the time spent on social networks.
Answer:
A,D,E
Step-by-step explanation:
Lol i took the test on edge and got it correct.
:P
Answer:
the answers are a d and e
Step-by-step explanation:
can anyone help me? im not good at this
Answer:
58,52,46
Step-by-step explanation:
It goes down by 6 every number.
Bridget correctly wrote a set of equivalent numbers. Which of the following sets of
numbers could have been what she wrote?
1, 25%, 0.25
25
o Ž, 40%, 0.04
o Ž, 66%, 0.666
1, 10%, 0.01
Answer:
The answer is B im doing that test right now
Step-by-step explanation:
Question 1 (1 point)
Which table represents the same linear
relationship as y=2x-5?
Answer:
i think the answer is B
Step-by-step explanation:
hope this helps you ;)
Citrus farmer who grows mandarin oranges finds that the diameters of mandarin oranges harvested on his farm follow a normal distribution with a mean diameter of 5.85 cm and a standard deviation of 0.24 cm. Find the 80th percentile for the diameters of mandarin oranges, round 4 decimal places
Answer:
6.0520
Step-by-step explanation:
Given that:
Mean = 5.85
Standard deviation = 0.24
Let N denote the 80th percentile.
P(X < N) = 0.8
[tex]P(Z < \dfrac{(N - 5.85)}{0.24}) = 0.8[/tex]
Using the Excel formula: = NORM.INV(0.8,5.85,0.24)
The 80th percentile for the diameters of mandarin oranges:
= 6.0520 (to 4 decimal place)
Question 1 (1 point)
Which of the following is a solution of x < -5?
-5
-10
0
3
Answer:
-10
Step-by-step explanation:
x has to be less in value than -5 and -10 is the only one that is less in value
Hope it Helps!
if this helped can you mark as brainliest?
The sum of 9/26 and -4/13 is ____
Answer:
1/26
Step-by-step explanation:
-4/13 is equivalent to -8/26. Since 9/26 and -8/26 have the same denominator, you can add together the numerator to get the numerator of the final answer. 9-8 is 1, so your answer is 1/26.
Calculate the perimeter of the figure and please show how you solved the answer :)
System of Equations - Substitution
5x – 4y = -12
3x – 8y = 32
Answer:
1. x+2y=6 or x=6-2y
3x-2y=2
3(6-2y)-2y=2
18-6y-2y=2
18-8y=2
-8y=-18+2
-8y=-16
y=-16/-8
y=2 ans.
x+2*2=6
x+4=6
x=6-4=2 ans.
Proof:
3*2-2*2=2
6-4=2
2=2
I leave the rest for you to practice with.
Q2. 81 = 3k
PLEASE HELP !!
Answer:
27
Step-by-step explanation:
A TV originally priced at $500 is discounted 5%. How much is the discount?
Answer:
The discount price for the TV is $475
Step-by-step explanation:
You multiply the original price by 0.95 (95%)
Answer:
$400
Step-by-step explanation:
Take the original price. Divide the original price by 5. Alternatively, divide the original price by 100 and multiply it by 20. Subtract this new number from the original one.
500/100=5
5*20=100
500-100=400
need help w log expressions! pre cal! ILL MARK U BRAINLIST
Answer:
[tex] log_{3}4 +6log_{3} {x}+log_{3} y [/tex]
Step-by-step explanation:
Mistake [tex] 6log_3(4xy)[/tex]
Correct expansion would be as given below:
[tex] log_{3}(4 {x}^{6}y ) \\ \\ = log_{3}4 +log_{3} {x}^{6} +log_{3} y \\ \\ = log_{3}4 +6log_{3} {x}+log_{3} y \\ [/tex]
reglas de la potenciacion
The scale on a road map indicates that 2 inches = 30 miles. How many inches would represent 120 miles on this road map?
0 4
O 6
08
0 10
Answer:
8
Step-by-step explanation:
Find the product of 9x(-3x²y-7xz)
Answer:
[tex] - 27 {x}^{3} y - 63 {x}^{2} z[/tex]
Step-by-step explanation:
[tex]9x( - 3 {x}^{2} y - 7xz)[/tex]
[tex] = 9x \times ( - 3 {x}^{2} y) + 9x \times ( - 7xz)[/tex]
[tex] = - 27 {x}^{3} y - 63 {x}^{2} z[/tex]
PLz help me i need to get 100
I’ll mark brainliest!
Answer:
y < -2
Step-by-step explanation:
it cannot be anything with ≤ bc the circle is open
and y is < -2 because the arrow goes left basically selecting all of the numbers less than -2
The cost (in dollars) of a custom-made sweatshirt is represented by $3.5n+29.99$ , where $n$ is the number of different colors in the design. Write a simplified expression that represents the cost of 15 sweatshirts.
Answer:
[tex]Cost = 52.5n + 449.85[/tex]
Step-by-step explanation:
Given
[tex]Cost = 3.5n + 29.99[/tex]
Required
Determine cost of 15
[tex]Cost = 3.5n + 29.99[/tex]
The cost of 15 sweatshirts is calculated by multiplying the cost of 1 by 15.
So, we have:
[tex]Cost = (3.5n + 29.99) * 15[/tex]
Open Brackets
[tex]Cost = 3.5n * 15 + 29.99 * 15[/tex]
[tex]Cost = 52.5n + 449.85[/tex]
Hence, the simplified cost of 15 sweatshirts is
[tex]Cost = 52.5n + 449.85[/tex]
The vertices of an ellipse are (0,-1) and (8,-1). The endpoints of the minor axis are (4,1) and (4,-3). Write the equation of the ellipse in general form
Answer:
x^2+4y^2-8x+8y+4=0
Step-by-step explanation:
The general form of the given ellipse is x² +4y² - 8x + 8y + 4 = 0.
What is an ellipse?An ellipse can be defined as a shape that looks like an oval circle.
The equation of an ellipse is
[tex]\dfrac{\left(x - h\right)^{2}}{a^{2}} + \dfrac{\left(y - k\right)^{2}}{b^{2}} = 1[/tex]
Where (h, k) is the center a and b are the lengths of the semi-major and the semi-minor axes.
The vertices of an ellipse are (0,-1) and (8,-1).
The endpoints of the minor axis are (4,1) and (4,-3).
The following equations take into account the different properties of an ellipse:
[tex]k = -1k=−1, h^{2} = a^{2}h 2 =a 2 , \left(h - 8\right)^{2} = a^{2}[/tex]
[tex]\begin{cases} b = 2 \\ k = -1 \\ h^{2} = a^{2} \\ \left(h - 8\right)^{2} = a^{2} \end{cases}[/tex]
We get that h = 4 k = -1, a = 4, and b = 2
The standard form of the given ellipse is
[tex]\dfrac{\left(x - 4\right)^{2}}{4^{2}} + \dfrac{\left(y + 1\right)^{2}}{2^{2}} = 1[/tex]
So the general form will be as : x² +4y² - 8x + 8y + 4 = 0.
Thus, the general form of the given ellipse is x² +4y² - 8x + 8y + 4 = 0.
Learn more about ellipses here:
brainly.com/question/9448628
#SPJ2
what is the solution of 5y + 1=31
Answer:
y=6
Step-by-step explanation:
edge2020
Answer:
y=6
Step-by-step explanation:
5y+1=31
-1 -1
5y=30
5 5
y=6
What is 19 52/418 rounded to the nearest whole number?
Answer:
19
Step-by-step explanation:
Bring it down, is it less than half of 418 yes, it is less than 209, so bring it down to 19
uh not sure if i put it in the right subject but... help Imao
Answer:
yes u did put in right subject
what is the answer of
[tex] \frac{47.8}{75} [/tex]
what is the value of s?
____ units
Answer:
s = 17
Step-by-step explanation:
a^2+b^2=c^2
a=8, b=15, c=s
64+225=c^2
289 =c^2
c= 17
Answer:
What are the choices
Step-by-step explanation:
An oil company fills 1/12 of a tank in 1/3 hour. At this rate, which expression can be used to determine how long it will take for the tank to fill completely?
A:1/12x3hrs
B:1/3 x 12hrs
C:1/3 x 1/12hrs
D:3x12hrs
P.s hrs = hours
Answer:
1/3 x 12
Step-by-step explanation:
just find the time taken and the expression will just reveal itself
if 1/12 tank= 1/3 hrs
1 tank = 1 x 1/3
1/12
=1/3 / 1/12
=1/3 x 12
( not compulsory just thought some one might not wanna calculate but just know the time taken: )
1/3 x 12
= 4hrs)
A travel agent receives a 10 percent commission for booking a hotel room 2 points
that costs $180 per night. The guest stays for three nights. How much
does the travel agent receive?
Your answer
Answer:
the travel agent receives $54
Step-by-step explanation:
180×3=540
540x0.10= 54
PLEASE HELP,, MARKING BRAINLIEST!!!
Choose the similarity statement that best represents the triangles. Provide evidence.
A. Triangles are similar by AA similarity.
B. Triangle are similar by SAS similarity.
C. Triangles are similar by SSS similarity.
D. Triangles are not similar.
Answer:
D.Triangles are not similar
Answer:
The best option would be c
Step-by-step explanation:
C
because the ration of all the three respective sides are similar as follows:
3/2 = 1.5
4.5/3 = 1.5
6/4 = 1.5
so basically the second triangle is just 1.5 times bigger than the first triangle and since ratio of all the three sides are similar SSS should be the similarity.
What is the length of the unknown leg in the right triangle?
25 m
D
20 m
Answer:
20 m :)
Step-by-step explanation:
