Answer:
A= 20
Step-by-step explanation:
6a+10=130 (subtract 10)
6a=120 (divide by 6)
a=20
If you dont understand the order, you follow PEMDAS backwards
Add/subtract
Mult./div.
Exponent/root
Write the percent as a fraction in simplest form and as a decimal: (two answers) 20% of the books
Mr. Marquez discovered that 18 of his 24 students enjoy reading in their spare time. What percent of his students enjoy reading in their spare time?
Answer:
75%
Step-by-step explanation:
Use 'Percent(age) Composition'
1. (18/24) = 0.75 This shows that 0.75/1 students reads during their free time.
2. 0.75 x (100) = 75% This step is to allow the value we received above to be displayed as a percentage.
75% of students enjoy reading in their spare time.
7.5 meal; 6.5% tax
PLS HELP ME!!!!!!
Answer:
$7.99
Step-by-step explanation:
6.5% of 7.5 = 0.4875
7.5 + 0.4875 = 7.9875 or about 7.99
A fish is 12 meters below the surface of the ocean. Its elevation is -12m. A sea bird is 28 meters above the surface of the ocean. Its elevation is 28m. If the bird is directly above the fish, how far apart are they?
Answer:
40
Step-by-step explanation:
28+12= 40
if my answer helps please mark as brianliest.
Learning Task 1: Solve for n. Write your answer in your notebook.
1. 7.26 x 0.22 = n
2. 17.92 x 0.64 = n
3. 7.65 x 0.85 = n
4. 36.20 x 0.05 = n
5. 31.85 x 0.91 = n
Answer:
1.5972
11.4688
6.5025
1.81
28.9835
Step-by-step explanation:
yan po hehe
An object is traveling at a steady speed of 9 9/10 km/per hour about how long will it take the object to travel 5/1/10 km/per hour.
Answer:
0.52 km
Step-by-step explanation:
We are given that
Speed of object, v=[tex]9\frac{9}{10}km/h[/tex]
Speed of object, v=[tex]9+0.9=9.9km/h[/tex]
Distance travel by object, s=[tex]5\frac{1}{10}km[/tex]
Distance travel by object, s=[tex]5+0.1=5.1km[/tex]
We have to find the time taken by object to travel 5 1/10 km.
We know that
[tex]Time=\frac{Distance}{speed}[/tex]
Using the formula
Time taken by object to travel 5.1 km =[tex]\frac{5.1}{9.9} hr[/tex]
Time taken by object to travel 5.1 km=0.52 hr
I need help figuring this question out
There are 220 students in year 9.
There are 20% more boys then girls.
a) How many boys are there in year 9
b) How many girls there in year 9
what is the value of y for -3x+2y=-10
Answer:
[tex]x=3.33333\\y=-5[/tex]
CAN U GIMME BRAIN PLZ!What is the solution to the equation below?
2(x - 3) = 2x + 5
A
3
X = 2
B
X=-2
= -2
A10
С
There is no solution.
D
There are infinitely many solutions.
Answer:
C. There is no solution.
Step-by-step explanation:
First, multiply what in the parentheses by what's outside of them.
[tex]2(x - 3) = 2x + 5 ↴[/tex]
[tex]2x - 6 = 2x + 5 [/tex]
Then seperate variables from nonvariables. After subtracting [tex]2x[/tex] from the right and left side, the equation becomes this:
[tex] - 6 = 5[/tex]
This equation has no solutions because this is an inequality.
Find the measure of interior angle C of hexagon OCEANS in which the
measure of the interior angles are:
O: 3x + 15, C: 2x + 30, E: 5x + 10, A: 2x + 55, N: 2x + 60, and S: x - 35.
Answer:
The measure of the interior angle C is [tex]108^{o}[/tex].
Step-by-step explanation:
Sum of angles in a polygon = (n - 2) x 180
where n is the number of sides of the polygon.
For a hexagon, n = 6. So that;
Sum of angles in a hexagon = (6 - 2) x 180
= 4 x 180
= [tex]720^{o}[/tex]
Sum of angles in a hexagon = [tex]720^{o}[/tex]
⇒ 3x + 15 + 2x + 30 + 5x + 10 + 2x + 55 + 2x + 60 + x - 35 = [tex]720^{o}[/tex]
15x + 135 = [tex]720^{o}[/tex]
15x = [tex]720^{o}[/tex] - 135
15x = 585
x = [tex]\frac{585}{15}[/tex]
= [tex]39^{o}[/tex]
But,
C = 2x + 30
= 2(39) + 30
= 78 + 30
= [tex]108^{o}[/tex]
The measure of the interior angle C is [tex]108^{o}[/tex].
15 PTS (WILL GIVE BRAINLIST)
Answer:
Step-by-step explanation:
Transform System A to system B
option c
Transform System B to system C
option b
2x - 4y = -10 ---------A1
-8x + 7y = 22 ----------A2
A1 * 4 --------> 8x - 16y = - 40
A2 --------> -8x + 7y = 22 {Add }
-9y = -18 -------------B2
B2 ÷ (-9) y = 2
There are 16 cats and 14 dogs in a local animal shelter.
Which phrase describes a ratio relationship between the two quantities?
the number of dogs in the shelter compared to the number of rabbits in the shelter
the number of dogs in the shelter compared to the number of cats in the shelter
the number of cats in the shelter compared to the number of cats in the shelter
the number of cats in the shelter compared to the number of dogs in the neighborhood
Answer:
This is by far the easiest question ever...Can you actually read and put effort into it before looking up all your answers next time? It literally says there are 16 CATS and 14 DOGS in a SHELTER. Its not A, because it did not mention rabbits. Its not C because it did not mention too much about cats, and it said dogs and cats not cats and cats. And its not D because we aint talking about a neighborhood. So..it is B. Easy, peasy, lemon squeezy!
i need help wit this really bad
Rover A: y= 1.3x - 4
Rover B: 3y = 3.9x - 12
What conclusion can you make about the system of equations?
A. The system has exactly one solution.
B. The system has infinitely many solutions.
C. The system has no solution.
Answer:
I think it is A
Step-by-step explanation:
because there is only 1 slope which is 3 and the y intercept is 4
What is the equation, in slope-intercept form, of the line parallel to -5x + y = 2 that passes through the point with coordinates (-2, 1)?
Answer:
y = 5x + 11
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Given
- 5x + y = 2 ( add 5x to both sides )
y = 5x + 2 ← in slope- intercept form
with slope m = 5
Parallel lines have equal slopes, then
y = 5x + c ← is the partial equation
To find c substitute (- 2, 1) into the partial equation
1 = - 10 + c ⇒ c = 1 + 10 = 11
y = 5x + 11 ← equation of parallel line
Which is true of the models? Check all that apply.
Answer:
what models
Step-by-step explanation:
What is the volume of the rectangular prism shown below?
12 in
3 in
9 in
Formula List: Link
24 inches cubed
324 inches cubed
162 inches cubed
104 inches cubed
Determine if the lines going through the given points are parallel.
perpendicular or neither: Line A:(-1,-5) (-4,-3) and Line B: (3, 1) (5, 4)
Answer:
Step-by-step explanation:
Line A: Neither
Line B: Neither
PLEASE GIVE ME THE ANSWER AND EXPLAIN HOW YOU WORKED IT OUT AND GOT THE ANSWER PLEASEEEEE ILL MARK YOU BRAINLIEST
Answer:
C, D
Step-by-step explanation:
Step 1: (3^2)^3 * 3^6 / 3^4
Step 2: (9)^3 * 3^6 / 3^4
Step 3: 729 * 3^6 / 3^4
Step 5: 729 * 729 / 3^4
Step 6: 531441 / 3^4
Step 7: 531441 / 81
Step 8: 6561
A = 27
B = 2187
C = 6561
D = 6561
E = 2187
Answer:
(SOMEONE HAS DELETED MY QUESTION SO I AM REPOSTING)
Step-by-step explanation:
Look at the image below!
Hope it helped! :)
I need help on knowing whether this is a solvable equation. Along with reasons why. HELP IF YOU CAN :))
To check if x = 9 is the solution, we need to replace every x with 9 and simplify
(3+x)/4 = 3
(3+9)/4 = 3
12/4 = 3
3 = 3
We get the same thing on both sides, so the last equation is a true equation. This means that the first equation is a true equation when x = 9. Therefore, the solution x = 9 is confirmed.
can someone help me please
Answer:
39 yards.
Step-by-step explanation:
52 squared plus B squared equals 65 squared
69 points and Brainliest answer!!!
Answer:
220%
Step-by-step explanation:
Miranda is buying a pair of shoes that are on sale for 60% of the original
price. After she uses a $25 gift certificate, the total cost before taxes is
$68. What is the original price of the shoes?
Answer:
$168
Step-by-step explanation:
Hope this helps and have a great day!!!!
Is y= -x a linear equation
Answer:
yes
Step-by-step explanation:
PLEASE HELP?
let g be the function given by g (x) = 3x^4 - 8x^3. At what value of x on the closed interval [ -2,2 ] does g have an absolute maximum
Answer:
When we have a function g(x)
We will have a maximum at x when:
g'(x) = 0
g''(x) < 0.
Now we start with:
g(x) = 3*x^4 - 8*x^3
The first derivation is:
g'(x) = 4*3*x^3 - 3*8*x^2
g'(x) = 12*x^3 - 24*x^2
We can rewrite this as:
g'(x) = x^2*(12*x - 24)
Now we want to solve:
g'(x) = 0 = x^2*(12*x - 24)
We have one trivial solution, that is when x = 0.
The other solution will be when the term inside of the parentheses is equal to zero.
Then we need to solve:
12*x - 24 = 0
12*x = 24
x = 24/12 = 2
Then g'(x) is equal to zero for x = 0, and x = 2.
Notice that both of these points are included in the interval [ -2,2 ]
Now we need to look at the second derivative of g(x):
g''(x) = 3*12*x^2 - 2*24*x
g''(x) = 36*x^2 - 48*x
Ok, now we need to evaluate this in the two roots we found before:
if x = 0:
g''(0) = 36*0^2 - 48*0 = 0
g''(0) = 0
Then we do not have a maximum at x = 0, this is a point of inflection.
if x = 2:
g''(2) = 36*(2^2) - 48*2 = 48
then:
g''(2) > 0
This is an absolute minimum.
Now let's look only at the interval [ -2,2 ]
We know that:
g''(0) = 0
g''(2) > 0
Then at some point, we should have g''(x) < 0 in our interval.
We need to find the first point such that happens, so let's try with the lower limit of the interval but with the first derivation, if g'(x) < 0, this means that the function is decreasing from that point on, then that point will be a maximum in our interval.
x = -2
g'(-2) = (-2)^2*(12*-2 - 24) = -192
And if we look at the function:
g'(x) = x^2*(12*x - 24)
We can easily see that it is negative unitl x = 0, and then it keeps being negative until x = 2.
So in the interval [ -2,2 ], the function g'(x) is always negative or zero, this means that in the interval [ -2,2 ], the function g(x) is always decreasing or constant.
Then the absolute maximum of g(x) in the interval [ -2,2 ] will be x = -2
this means that:
g(-2) ≥ g(x) for all x ∈ [ -2,2 ]
help me with this problem
Answer:
angle 1 = angle 3
= 180°-136°
=44°
= angle 3
help pls with the question
Answer:
The second one
Answer: The second one i think
Step-by-step explanation:
Can someone please help me
I have no clue how to do these, if you could answer one with an explanation that would be amazing
Answer:
2. I assume you're working on 1 so I skipped it. 2 would be 16000 yearly. 300 a week would equal 15,000 a year so its less
There are 52 weeks in a year which is how I got that number^
3. With the job he has he gets 21,548.8 per year(11.20 × 37 = 414.4 x 52 = 21,548.8). With the advertised job he would would get 21,150 yearly. 21000 + 5% of 3000 which would be his commission. so stick with his current job
4. (£9.40 x 35 hours = £329) (£329 x 52 weeks = £17,108). (3 extra hours per week x 52 weeks = £156) (£17,108 + £156 = £17,264) That is her total
Can someone help me solve this Y=5/2x-1
Answer:
m= 5/2
Step-by-step explanation: