Answer:
10%
Step-by-step explanation:
The computation of the percentage of bulbs that switched on incandescent is as follows;
Let us assume the incandescent be I
And, the fluorescent be F
Now the equation is
0.4I + 0.9F = 0.8 (I+F)
0.41I + 0.9F = 0.8I + 0.8F
So here
0.4I = 0.1F
Now the percentage would be for incandescent in the case of switched on is
= 0.4I ÷ 0.8(I+F) × 100
= 0.1F ÷ 1F
= 10%
Question 28 (1 point)
Find the point P along the directed line segment from point A(-18, -2) to point B(0, 6) that divides the segment in the ratio 1 to 3.
a P(-9/2,4)
b P(- 27/2,0)
c P(-9,2)
d P(-13/4,0)
Answer:
B.
I hope it will be useful.
Why does the equation 9−2x−9−16x=−14x−7−4x−11 have no solutions?
because if you add 18x to both sides of the equation and simplify, you get −18=−18
because if you add 18 x to both sides of the equation and simplify, you get - 18 = - 18
because if you add 18x to both sides of the equation and simplify, you get 0=−18
because if you add 18 x to both sides of the equation and simplify, you get 0 = - 18
because if you subtract 18x from both sides of the equation and simplify, you get −18=−18
because if you subtract 18 x from both sides of the equation and simplify, you get - 18 = - 18
because if you subtract 18x from both sides of the equation and simplify, you get 0=−18
Answer:
Because if you add 18x to both sides of the equation, you get 0 = -18
Step-by-step explanation:
When you combine like terms in the equation, you get -18x = -18x - 18. After adding 18x to both sides, you have 0 = -18. This is not true, which means that there are no solutions to the equation.
Can u plz help me answer this question plz
Answer:
12
Step-by-step explanation:
44/3 2/3 (Divide)
12
Find the solution set of the inequality. \qquad16x - 7 \leq -7116x−7≤−71
Answer:
[tex]x \le -4[/tex]
Step-by-step explanation:
Given
[tex]\qquad16x - 7 \leq -71[/tex]
Required
Solve
Start by adding 7 to both sides
[tex]\qquad16x - 7 + 7 \leq -71 + 7[/tex]
[tex]\qquad16x - 7 + 7 \leq -64[/tex]
[tex]\qquad16x \leq -64[/tex]
Divide both sides by 16
[tex]\frac{16x}{16} \leq \frac{-64}{16}[/tex]
[tex]\frac{16x}{16} \leq -\frac{64}{16}[/tex]
[tex]x \leq -\frac{64}{16}[/tex]
[tex]x \le -4[/tex] --- The solution
Answer:
x < -4
I did this on khan academy
What is the relationship between 21 and 22?
2
1
a
They are Alternate Interior
They are congruent
They are right angles
They are adiacent
someone please help her or him please
What is the slope of the line passing through the point (2,1) and the origin ?
Answer:
[tex]m=\frac{1}{2}[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Slope Formula: [tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]Step-by-step explanation:
Step 1: Define
Random Point (2, 1)
Origin (0, 0)
Step 2: Find slope m
Simply plug in the 2 coordinates into the slope formula to find slope m.
Substitute [SF]: [tex]m=\frac{0-1}{0-2}[/tex]Subtract: [tex]m=\frac{-1}{-2}[/tex]Simplify: [tex]m=\frac{1}{2}[/tex]Describe how to place the decimal point in the quotient when you divide a decimal by an integer.
log (x2 - 1) - log (2x + 2) = 0
Answer:
x=3
Step-by-step explanation:
log (x^2 - 1) - log (2x + 2) = 0
Add log (2x + 2) to each side
log (x^2 - 1) = log (2x + 2)
Since the logs with the same base are equal the x^2 -1 must equal 2x+2
x^2 -1 = 2x+2
Subtract 2x+2 from each side
x^2 -1 -2x-2 = 2x+2 -2x-2
x^2 -2x-3 = 0
Factor
What number multiplies to -3 and adds to -2
-3 *1 =-3
-3+1 =-2
(x-3) (x+1) =0
Using the zero product property
x-3 =0 x+1 =0
x=3 x=-1
Check to see if solutions are valid
x = -1
log ((-1)^2 - 1) - log (2*-1 + 2) = 0
log(0) - log 0 = 0
Log 0 is undefined x =-1 not a valid solution
x = 3
log ((3)^2 - 1) - log (2*3 + 2) = 0
log(8) - log 8 = 0
valid
water is being added to a pool. The height of the water is the pool is 4 feet when the Water is first turned on. After 6 minutes, the height of the water is 7 feet. Which equation describes the height of the water in the pool?
A.) y = 1/2 + 4
B.) y = 7/6 + 4
C.) y= 7/6 - 4
D.) y = 1/2 - 4
Answer:
A
Step-by-step explanation:
how to convert 1.86 m to feet
Answer:
5.905
Step-by-step explanation:
Formula
For an approximate result, multiply the length value by 3.281
1.8 × 3.281 = 5.905
-TheUnknownScientist
A lent B rs 32500 to purchase a car at 12.5% p.A
Answer:
6,483.75
Step-by-step explanation:
Calculation to find the interest paid by B after 3/2 year
First step is to calculate the Compound interest amountUsing this formula
Interest paid= P(1 + r/100)^Time
Where,
P represent principal=32,500
r represent Rate of interest = 12.5%/2 = 6.25%
T represent Time=3/2 years
Let plug in the formula
Compound interest amount= 32,500(1 + 6.25/100)^2*3/2
Compound interest amount= 32,500([1+.0625)^3
Compound interest amount= 32,500(1.0625)^3
Compound interest amount= 32,500 *1.1995
Compound interest amount= 38,983.75
Now let calculate the Interest paid by B
Interest paid by B = 38,983.75 - 32,500
Interest paid by B = 6,483.75
Therefore the interest paid by B after 3/2 year will be 6,483.75
PLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLZZZZZZZZZZZZZ HELP ASAP 10 POINTSSSSS > < and plz do both if u know them! <3 <3 <3
Answer:
what do u want me to do
Step-by-step explanation:
If m ABC = 122°, and m then m
Answer:
DBC = 122 - 71 = 51°
Step-by-step explanation:
Answer:
Step-by-step explanation:
122-71 = 51°
a sales person at a jewelry store earns 3% commission each week. Last week, Heidi sold $680 worth of jewelry. How much did she mKe in commission? How much did the jewelry store make from her sales?
Heidi earned $20.4 in commission
The store made __ from her sales
Answer: $659.60
Step-by-step explanation:
Heidi commission = 3% * 680
= $20.40
The amount the Jewellery store made will be what she sold less the commission owed to her:
= 680 - 20.40
= $659.60
HELP ASAP! step by step if possible! please & thank you
The y value in the table gets multiplied by 4 every time the x value goes up by 1. You can check your work using the values in the table given to you. 0.25 times four is 1. 1 times four is 4, and so on as the table goes.
The ratio would be written as 1:4
anyone ....?
?asap....
Answer:
243 .....................
PLEASE ANSWER!! Herman purchased a sundial to use as the centerpiece for a garden. The diameter of the sundial is 11 inches. Find the radius of the sundial
Answer:
The radius is (1/2)Diameter/ 5.5
Step-by-step explanation:
4x-8y=-26 9x+4y=13
Stuck on my math homework again
Answer:
x = 0, y = 13/4
Step-by-step explanation:
I used elimination to solve the system of equations, but it might be easier to use substitution.
Anyway, hope this helps.
Solve the two-step equation.
-0.45x + 0.33 = -0.66
What is the solution?
x = -2.2
x = -1.4
x = 1.4
x = 2.2
Answer:
LAST ONE: x=2.2Step-by-step explanation:
-0.45x + 0.33 = -0.66
Hope this helps
Answer:
x = 11/5 or 2.2Step-by-step explanation:
-0.45x + 0.33 = -0.66 subtract 0.33 both sides
-0.45x = -0.66 - 0.33 simplify
-0.45x = -0.99 multiply both sides by 100
-45x = -99 divide -45 both sides
x = -99 / -45 simplify
x = 11/5 or 2.2
= In a 12-egg carton, 1/6 equals 2 eggs. Use the grids below to help you
und draw cartons where:
Answer:
given below
Step-by-step explanation:
These are fractions problems .
If you have 12 eggs and you need 1/6 then
12* 1/6= 12/6= 2 eggs
Similarly if you need 1/3,1/4, 1/2
12 * 1/3= 12/3= 4 eggs
12 * 1/4 = 12/4= 3 eggs
12 * 1/2 = 6 eggs
These can be drawn in sets of 12.
from the picture we see that dividing the 12 eggs in two parts and coloring one part gives 6 eggs.
Similarly dividng the 12 eggs in three parts and coloring one part gives 4 eggs.
The fractions 1/3,1/4,1/2 or 1/6 means dividing the 12 eggs into 3,4,2, or 6 parts and obtaining 1 part out of it.
K
Writing Quadratics
Write the equation of a quadratic with focus at (4,6) and
directrix at y = 2
You answer should be entered in the format:
y=a(x - h)+k
Please help to solve. ASAP
Answer:
i think it's 46 miles
Step-by-step explanation:
What is the length of the hypotenuse in the triangle below?
A right triangle is shown. 2 sides have lengths of 14 centimeter. The length of the hypotenuse is unknown.
Answer:
your answer will be 14 square root 2cm :)
Step-by-step explanation:
Just got done with the pretest this is correct also known as answer B!
The required length of the hypotenuse is 14√2.
The 2 sides of the right angle triangle are known i.e. 14 centimeters. Length of the hypotenuse to be determined.
The right angle triangle is defined as which contains at least one angle of 90°.
Here, other two side of hypotenuse is 14 centimeter.
Hypotenuse = [tex]\sqrt{14^2+14^2}[/tex]
= [tex]14\sqrt{2}[/tex]
Thus, the required length of the hypotenuse is 14√2.
Learn more about right angle triangle here:
https://brainly.com/question/3770177
#SPJ2
expressed as a single logarithm. you do not need to expand the polynomials
Answer:
Step-by-step explanation:
ln(x-2)^5
ln(x + 3)^8
ln(x + 3)^3
(x - 2)^5 * (x + 3)^8
================ Cancel the (x + 3)s
(x + 3)^3
(x- 2)^5 * (x + 3)^5
( (x - 2) *(x + 3) )^5
ln( (x - 2)(x + 3)^5 You could expand what's in the brackets.
ln( x^2 - 2x + 3x - 6)^5
ln(x^2 + x - 6)^5
the answer all depends on what you are given. If this answer proves to be wrong, write me a note under comments and I'll alter my answer.
What answer fills in the blank ?
If X=sin 130° + cos 130° then
1)X<0 2)X=0 3)X>0 4)X greater than or equal to 0
Answer:
hy are u indian ?
------------------------
Which expressions are equivalent to -2(2h+10)+4h−2(2h+10)+4h
A.−20−4h+4h
B.-20
C.none of the above
Answer:
A and B
Step-by-step explanation:
Khan
And its 100% right promise
For each handmade greeting card Jacqui sells, she makes a profit of $0.35. In one week, she made a profit of $42. About how many greeting cards did Jacque sell that week
Answer: Jacque sold 120 greeting cards in that week.
Step-by-step explanation:
Given : Profit per card = $ 0.35
Total profit = $42
Number of greeting cards Jacque sold = (Total profit) ÷ (Profit per card)
[tex]=\$42\div\$0.35\\\\=\dfrac{4200}{35}\\\\= 120[/tex]
Hence, Jacque sold 120 greeting cards in that week.
Suppose a city has 200 hotels. If 142 of the hotels have a pool, what
percent of hotels do not have a pool?
A 29%
D
Answer:
29%
Step-by-step explanation:
200-142=58, 58 is 29% of 200
Help me I don't know this answer please