Answer:
Step-by-step explanation:
Student : teacher = 5 : 2
Number of students = 5x
Number of teachers = 2x
Last year:
Last year Total = 56
5x+ 2x = 56
7x = 56
x = 56/7
x = 8
Number of students = 5*8 = 40
Number of teachers = 2*8 = 16
This year:Total = 70
5x + 2x = 70
7x = 70
x = 70/7
x = 10
Number of students = 5*10 = 50
Number of teachers = 2*10 = 20
need answer. pls help
Answer: 28 degrees
Step-by-step explanation:
Since angle KJL = LJM then that means angle 7x=3x+16
First we need to solve for x
7x=3x+16
4x=16
x=4
now we can input it into either equation to solve for the angle KJL
7(4)= 28 so the angle is 28 degrees
If my radius is 10ft, what is my diameter?
Answer:
31.42 ft.
I dont know if this answer is fully correct because i hate doing circles so sorry if im wrong
Step-by-step explanation:
Answer:
20 is your diameter
Step-by-step explanation:
radius is half of a diameter
Is 5 a solution to 4 + x = 6 ? Why or why not?
Answer:
no
Step-by-step explanation:
x has to be 2 because 4+2=6
Answer:
no, because 4 + 5 = 9 not 6.
Step-by-step explanation:
the only way for this equation to be true is if x = 2.
8. Is the discriminant positive, negative, or zero?
Answer: its positive !!!
Step-by-step explanation: got it wrong at first:(
What is the inverse of the function
Answer:
second option
Step-by-step explanation:
let y = f(x) and rearrange making x the subject, that is
y = x - 9 ( add 9 to both sides
y + 9 = x
Change y back into terms of x with x = [tex]f^{-1}[/tex] (x) , then
[tex]f^{-1}[/tex] (x) = x + 9
I need help with this question
what question?????????????????
PLEASE HELP PRE ALGEBRA EASY 10 POINTS
Evaluate
expression 4+5.23 + 3 =
Answer:
12.23
Step-by-step explanation:
4+5.23 = 9.23
9.23 + 3 = 12.23
Evaluate the expression when m = 5n = -2 and p= 10 p/m-n
Answer:
10/7
Step-by-step explanation:
plug in the numbers to get 10/5--2 or 10/5+2
my question is in the image
Answer:
13.2 miles
Step-by-step explanation:
To solve this, we will need to first solve for the base of the triangle and then use the information we find to solve for the shortest route.
(5.5 + 3.5)² + b² = 15²
9² + b² = 15²
81 + b² = 225
b² = 144
b = 12
Now that we know that the base is 12 miles, we can use that and the 5.5 miles in between Adamsburg and Chenoa to find the shortest route (hypotenuse).
5.5² + 12² = c²
30.25 + 144 = c²
174.25 = c²
13.2 ≈ c
Therefore, the shortest route from Chenoa to Robertsville is about 13.2 miles.
In ΔOPQ, the measure of ∠Q=90°, the measure of ∠O=84°, and OP = 2.9 feet. Find the length of PQ to the nearest tenth of a foot.
Answer:
x=2.8841≈2.9 feet
Step-by-step explanation:
Carol sliced a lemon into circular pieces to put in a bowl of punch. The piece above has a radius of 2.5cm.
I’ll get you a lot of points if you answer this!!
Answer:π(2.5)
Step-by-step explanation:
π(2.5)
find the height of the triangle
8in 6in
h=
Answer:
[tex]\sqrt{55}[/tex]in.
Step-by-step explanation:
8²=3²+h²(BY P.T)
h=[tex]\sqrt{8^{2}-3^{2} }[/tex]
h=[tex]\sqrt{55}[/tex]
The diagram shows triangle ABC. Calculate the length of AC
Given:
In triangle ABC, AB=8.2 cm, C=13.5 cm and angle A= 81 degrees.
To find:
The length of AC.
Solution:
According to the Law of Sines:
[tex]\dfrac{\sin A}{a}=\dfrac{\sin B}{b}=\dfrac{\sin C}{c}[/tex]
Using Law of Sines, we get
[tex]\dfrac{\sin A}{a}=\dfrac{\sin C}{c}[/tex]
[tex]\dfrac{\sin (81^\circ)}{13.50}=\dfrac{\sin C}{8.2}[/tex]
[tex]\dfrac{\sin (81^\circ)\times 8.2}{13.50}=\sin C[/tex]
[tex]\sin^{-1}\dfrac{\sin (81^\circ)\times 8.2}{13.50}= C[/tex]
[tex]C\approx 36.86^\circ[/tex]
Using angle sum property, we get
[tex]\angle A+\angle B+\angle C=180^\circ[/tex]
[tex]81^\circ+\angle B+36.86^\circ=180^\circ[/tex]
[tex] \angle B =180^\circ-81^\circ-36.86^\circ [/tex]
[tex] \angle B =62.14^\circ [/tex]
Now,
[tex]\dfrac{\sin A}{a}=\dfrac{\sin B}{b}[/tex]
[tex]\dfrac{\sin (81^\circ)}{13.50}=\dfrac{\sin (62.14^\circ)}{b}[/tex]
[tex]b=\dfrac{13.50\times \sin (62.14^\circ)}{\sin (81^\circ)}[/tex]
[tex]b\approx 12.08[/tex]
Therefore, the length of AC is 12.08 cm.
So uh- here we are again
Answer:
1/6
Step-by-step explanation:
When subtracting or adding fractions, you always want the denominator (aka the bottom number of the fraction) to be the same number. Since both of your denominators are both the same, we can subtract!
2/6 - 1/6 = 1/6
Remember that you don't subtract the bottom, just the top. Hope this helped :)
A popular smartphone costs about $357.50 to
make. The company sells the phone at a 64%
markup. What is the sale price for this phone?
Step-by-step explanation:
first you find 60% of 357.50 which is $214.50. Next you would add $357.50+214.50=572
so the awnser is
the sale price of a popular smart phone is $572.
Hope this helps!!
A student is solving the equation
4
(
x
−
5
)
=
−
6
x
−
7
+
2
. Which describes a first step the student could use to solve the equation correctly?
Answer:
4(x−5)=−6x−7+2
first step open bracket and add or subtract no.
4x-20=-6x-5
put common in each side
4x+6x=-5+20
10x=15
x=15/10=3/2
first one is your answer
HELPP Which equation is related to Vx+10-1-x?
O
x + 10 = x2 + x + 1
O x + 10 = x2 + 2x + 1
O x + 10 = x2 + 1
O x + 10 = x2-1
Answer:x + 10 = x2 + 2x + 1 x + 10 = x2 + 1 x + 10 = x2 – 1.
Step-by-step explanation:
The solution is, x+10 = x^2 + 2x + 1 is the equation is related to
√x+10 - 1 = x.
What is simplification?Simplify simply means to make it simple. In mathematics, simply or simplification is reducing the expression/fraction/problem in a simpler form. It makes the problem easy with calculations and solving.
here, we have,
given that,
the equation is,
√x+10 - 1 = x
or, √x+10 = x+1
now, taking square on both side, we get,
x+10 = (x+1)^2
we have,
(a+b)^2 = a^2 + 2ab + b^2
so, applying that, we get,
x+10 = x^2 + 2x + 1
Hence, The solution is, x+10 = x^2 + 2x + 1 is the equation is related to √x+10 - 1 = x.
To learn more on simplification click:
brainly.com/question/28996879
#SPJ7
PLEASE HELP NOW!!!!!!!
Answer: BC
Step-by-step explanation:
I know this because i did this one before your welcome
please answer this, I really need help
Answer:
????? I am only in first grade
Step-by-step explanation:
???????
Solve. A standard coffee mug has a capacity of 16 fluid ounces. If Annie needs to fill 6 mugs with coffee, how many total quarts of coffee does she need?
Answer: 3 quarts of coffee.
Step-by-step explanation:
A coffee mug can take 16 fluid ounces.
Annie needs to fill up 6 mugs so the total ounces needed for 6 mugs would be:
= 16 * 6
= 96 fluid ounces
As the answer needs to be in quarts, convert the above.
1 quart = 32 fluid ounces
96 fluid ounces = 96/32
= 3 quarts
A new Playstation game system costs $380. The tax on the system is 4%. What is the total cost of the system including tax? *
Answer:
395.2
Step-by-step explanation:
380 x 0.04 = 15.2
380 + 15.2 = 395.2
Answer:
The cost of the system including the tax is $395.20.
Step-by-step explanation:
If the tax is 4% that means that the total price will equal...
380 + (380)(0.04) = $395.20
Therefore the cost of the system including the tax will be $395.20.
find l of the following cone
Answer and Step-by-step explanation:
Pythagorean theorem
Half of 4 is 2.
2^2 + 9^2 = l^2
4 + 81 = l^2
Square root of 85 = l
#teamtrees #PAW (Plant And Water)
What is the GCF?
6x² + 24x
Answer:
6x
6x(x + 4)
Step-by-step explanation:
Both 6x^2 and 24x are divisible by 6x
GIVING BRAINLIEST Find the surface area of the net below
Answer:
119
Step-by-step explanation:
1/2x5x7x4+7x7
can I have the brainliest ?
Answer:
119 m
Step-by-step explanation:
First find the square 7x7 = 49m
Now the triangle [tex]\frac{5 * 7}{2}[/tex] = 17 .5
17.5 * 4 = 70m
70m + 49m = 119m
I need help plz this is hard
Answer:
99 inches
Step-by-step explanation:
9*11 =99
Simplify: 4 [ 2+ 1 ( 47 - 5 ) ÷ 7 ]
pls help asap ! ty !
Please give me the correct answer.Only answer if you're very good at math.Please don't put a link to a weird website.
Casually puts a link to a weird website..
https://theuselessweb.com
*whistles*
Answer:
there is no solution-
Step-by-step explanation:
there's no solution because its impossible for a to have 2 different values; you see that 0.1 and 0.01 are not equal, therefore a can not be equal,, otherwise the equation would be false
Rapid Rental Car charges a $55 rental fee, $20 for gas, and $0.65 per mile driven. For the same car, Capital Cars charges $55 for rental and gas and $0.75 per mile.
Answer:
200 miles
Step-by-step explanation:
Given data
Rapid Rental Car
charges a $55 rental fee
$20 for gas, and
$0.65 per mile driven
let the number of miles be x, the total charges y
y=55+20+0.65x
y= 75+0.65x----------1
Capital Cars
charges $55 for rental and gas and
$0.75 per mile.
let the number of miles be x, the total charges y
y=55+0.75x
y= 55+0.75x----------2
Required
The number of miles driven before the two Rental companies charge the same amount
equate 1 and 2
75+0.65x= 55+0.75x
collect like terms
75-55= 0.75x-0.65x
20= 0.1x
x= 20/0.1
x= 200miles
Hence the distance will be 200 miles for the charges to be the same
Which functions are linear Select all that applies A) s=4r - 2 B) s=r + 10 C) s= 9r - 7 D) s=6r + 6
Step-by-step explanation:
The graph of linear function is a straight line.
General form of the linear function is -
y = a + bx
where a is the y -intercept and b is the slope.
Both a and b are constants.
Here,
x is independent variable whereas y is dependent variable.
For example -
y = 2x + 15