all triangles have 180 total degrees, we know this
80 degrees are accounted for, so there's 100 left
3x - 25 = 100
3x = 125
x = 41.67
The output of a flashlight is 2.0 x 10 lumens. If 1 lumen is about 1.464 x 10 3 watts, then
what is the output of the flashlight in watts?
A 7.32 x 10^-6
B 7.32 x 10^-5
C 2.93 x 10^-2
D 2.93 x 10^-1
how many solutions is there to the system of equations? 2x + 3y = 11 -4x - 6y = -22
Answer:
x = 4, y = -3
Step-by-step explanation:
{2x - y = 11
{x + 3y = -5
You can use the substitution method by solving for x in the second equation:
x + 3y = -5
Subtract 3y from both sides:
x = -3y - 5
Now, substitute this value for x into the first equation:
2x - y = 11
2(-3y - 5) - y = 11
Distribute:
-6y - 10 - y = 11
Add 10 to both sides:
-6y - y = 21
Combine like terms:
-7y = 21
Divide both sides by -7:
y = -3
Next, substitute this value for x into the second equation:
x + 3y = -5
x + 3(-3) = -5
Multiply:
x - 9 = -5
Add 9 to both sides:
x = 4
What is the first step to solve this equation:
11 - 3x = 44
Question 3 options:
Add 3 to both sides
Add 11 to both sides
Subtract 11 from both sides
Divide 3 on both sides.
What is the answer to this?
Answer:
DG=9
Step-by-step explanation:
2x-4=x+7
x-4=7
x=11
x-2=11-2=9
HURRY this needs to be done fast!!!
Is the following triangle a right triangle?
Yes Or No ?
if f(x) = 2x +1 and g(x) = 5x-6 then what are f(-1) and g(3)
Answer: -1
Step-by-step explanation: ANSWER : -1
f(x)=3x−1=y
⇒x=3y+1
∴f−1(y)=3y+1
⇒f−1(x)=3x+1
g(x)=5x+6=z
⇒x=5z−6
g−1(z)=5z−6
⇒g−1(x)=5x−6
g−1(f−1(x))=g−1(3x+1)
=53x+1−6
=15x−17
∴g−1(f−1(2))=
Solve the equation 5x^2-6x-7=0
Answer:
0.37
Step-by-step explanation:
5x^2-6x-7=0
25x-6x-7=0
19x-7=0
19x=7
0.37
Answer:
x = (3-2√11)/5 ; x= (3+2√11)/5
Step-by-step explanation:
Δ/4 = (b/2)^2 - ac where b is the term that multiplies x, a is the therm that multiplies x^2 and c is the therm without x
Δ/4 = (-3)^2 - (-7*5) = 9 + 35 = 44 = 2^2 *11
x1 = (3 - √2^2 *11)/5 = (3-2√11)/5
x2 = (3+ √2^2 *11)/5 = (3+2√11)/5
If (-3)^-5=1/x, what is the value of x?
options are in the photo
Answer:
X= -243
Used Math.way
Clara bought a shirt for %18.45 and a skirt for $22.68. She gave the cashier $50 for the purchase. How much change will clara receive?
Answer:
$8.87
Step-by-step explanation:
Add the cost of the shirt and the skirt, 18.45 + 22.68 = 41.13
50-41.13 = $8.87
Find the missing side lengths.
Can someone help me?
9514 1404 393
Answer:
m = n = 5√2
Step-by-step explanation:
The mnemonic SOH CAH TOA reminds you ...
Sin = Opposite/Hypotenuse
sin(45°) = m/10
m = 10·sin(45°) = 10·(√2)/2 = 5√2
The triangle is isosceles, so m = n.
n = m = 5√2
_____
The side ratios of an isosceles right triangle are 1 : 1 : √2. That is, the legs are 10/√2 = 5√2 in this triangle. It can be useful to remember these ratios for this "special" triangle.
Write -0.5 repeating as a fraction or mixed number
Answer:
Step-by-step explanation:
1/2 as a fraction
which question is a statical question
A.What is the best genre of books?
B.What is the longest book you have read?
C.What genre was the last book you read?
Answer:
B is a statistical question
Step-by-step explanation:
A and C ask for qualitative data or categorical data
B asks for quantitative data or numerical data
We obviously use numerical data for statistical work, so B is the answer
What is 3809 divided by 5 long division
Answer:
761 R 4
Step-by-step explanation:
0 7 6 1
5 3 8 0 9
− 0
3 8
− 3 5
3 0
− 3 0
0 9
− 5
4
help me it's too urgent
Answer:
id k if it's right but i hope this helps :)
Step-by-step explanation:
if a quadrilateral has angles measure 2y,3y ,y+5and 2y-1,what is the value of y
a.360
b.45.5
c.90.5
d.44.5
I need to print x photos for my scrapbook I called two different stores to ask about the cost of printing photos The first store charges a fee of $3.79 to use the photo machine and then an additional $0.25 per photo. The second store charenly a $0.99 fee to use the photo machine, but the additional cost per photo is $0.35 After comparing the two stores, I realize my overall cost will be the same at each store. What is the value of x, the number of photos I need to print?
Answer:
x=28
Step-by-step explanation:
3.79+0.25x=0.99+0.35
-0.35x -0.35x
3.79+-0.10x=0.99
-3.79 -3.79
-0.10x=-2.8
-0.10x/-2.8
x=28
I need the answer ASAP does anyone know it
Please help I asked this question earlier and nobody answered! :(
Answer:
B
Step-by-step explanation:
One way to tell is to put both equations into slope-intercept form. That form is usually written [tex]y=mx+b[/tex] where m is the slope and b is the y-intercept.
Solve the first equation for y.
[tex]6x+2y=5 \\ 2y=-6x+5 \\ y=-3x+5/2[/tex]
The slope of this line is -3, and its y-intercept is 5/2.
Solve the second equation for y.
[tex]y+3x=2\\y=-3x+2[/tex]
The slope of this line is -3 and its y-intercept is 2.
The lines are parallel because they have the same slope and different y-intercepts. There is no solution to the system.
josiah pays $18 for a DVD that originally cost $20. what is the percent decrease in the cost of the DVD?
Answer:
It should be 10%
What is the area of this regular polygon?
Answer:
A=25√3 cm^2
Step-by-step explanation:
Since it is a regular triangle, all sides are equal to 10cm. The dotted line is a perpendicular bisector, which means that it seperates the triangle into two perfect halves. So a right triangle is formed. The bottom of the right triangle will be half of 10, and 10/2=5. So to find the missing side, use the pythagoreom theorem.
5^2+x^2=10^2
25+x^2=100
x^2=75
x= 5√3
The height of the triangle is found, so apply the formula for area:
A=1/2*5√3*10
A=25√3
I GIVE YOU BRAINLIEST!!!
The graph of function f is shown.
Function g is represented by the table.
x -1 0 1 2 3
g(x) 24 4 0 -4/5 -24/25
Which statement correctly compares the two functions?
A. They have the same x- and y-intercepts.
B. They have different x- and y-intercepts but the same end behavior as x approaches ∞.
C. They have the same y-intercept and the same end behavior as x approaches ∞.
D. They have the same x-intercept and the same end behavior as x approaches ∞.
DUE IN 30 MINTUES!!!!!PLEASEEE HELP!!!
You need to purchase supplies for the trip. You have $1000 to spend.
Oxen: $40 each
Food: $0.20 per lb
Clothing: $10 per set.
Matt also charges 9% tax
Purchase at least 2 oxen, 500lbs of food, and 5 sets of clothing. You may want to purchase more.
Select the amount of items and find the total cost including tax
Find the value of x
Step-by-step explanation:
Given Angle AOC = 90,
Angle AOB + Angle BOC = 90
[tex]3x + 46 + 14 = 90 \\ 3x + 60 = 90 \\ 3x = 90 - 60 \\ 3x = 30 \\ x = 30 \div 3 \\ = 10[/tex]
Answer:
B) 10
Step-by-step explanation:
It is given that the (m<AOC) is (90) degrees. It is also given that (<AOB) and (<BOC) compose (<AOC). Therefore, the following statement can be made;
(m<AOB) + (m<BOC) = (m<AOC)
Substitute,
(3x + 46) + (14) = (90)
Simplify,
3x + 60 = 90
Inverse operations,
3x + 60 = 90
-60 -60
3x = 30
/3 /3
x = 10
PLS HELP ME PLS 20 POINTS FOR HELPING
Pleaseeee help ASAP!!!!!!
Question:
The taxi company charged a pick-up fee of $4.30 plus $1.25 per mile. The total fare was $35.55, not including the tip. How many miles was the taxi ride?
Answer:
total miles 25
Prove:
35.55-4.30=31.25
31.25/1.25= 25
OR Explained
sub 4.30 35.55 - 4.30 = 31.25
Divide 1.25 31.25/1.25 = 25
Final answer is 25
After dividing what you subtracted, you will successfully get your answer.
Answer:
25 miles is the answer
Step-by-step explanation:
1. Determine the following:
1.1. A car does a distance of 340 km for a consistent speed of 85 km/h. Hoy
long will it take the car to go the entire distance.
Answer:
v=d/t
v=340km/85km/h
v=4 km
I hope this helps you
One more than the product of 17 and Matt's savings
Use the variable m to represent Matt's savings.
Answer:
17m=2
Step-by-step explanation:
hey plz pick mine as the brainliest?
T Frank leans a 10 foot ladder against the side of his house, but because of a
rose bush next to the house, the bottom of the ladder is 3 feet away from the
wall. How high will the top of his 10 foot ladder really reach? feet
Answer:
9.5 feet
Step-by-step explanation:
We use Pythagorean thm:
a² + b² = c²
Given:
b = 3
c = 10
Work:
a² + b² = c²
a² + 3² = 10²
a² + 9 = 100
a² = 91
[tex]\sqrt{a^2} =\sqrt{91}[/tex]
a = 9.5
3. Ethan bought a used car. The value, v(t) the car t years after his purchase is given by the equation v(t) = 4, 500 * (0.8334) ^ t . What was the value of the car when Ethan bought it?
Answer: 4500
Step-by-step explanation: when t=0, then 0.8334^t= 1
And 4500 is original value of the car.