The fire department has seen an increase in smoke detector sales since 2015. In 2015,
they sold 350 detectors which is up from the previous year by 105%. How many did they
sell in the previous year?

Answers

Answer 1

Answer:

Step-by-step explanation:

Given the amount of detectors sold in the current year = 350

percent increment = 105%

To get the amount sold the previous year, we will use the expression;

(105% of x) + x =  350

1.05x = 350 + x

1.05x + x = 350

2.05x = 350

x = 350/2.05

x = 170.7

Hence the amount sold the previous year was 170.7 detectors


Related Questions

CH4 + O2 → CO2 + 2 H2O

Answers

CH4+2O2—>CO2+2H2O will be your answer

Square root of 24 using perfect squares

Answers

24 is not a perfect square.

What is a Perfect Square ?

A perfect square is a number that can be written as a product of an integer and another integer itself.

To determine the square root of 24

24 = 6 * 4

6 square can be drawn of 4 small squares

[tex]\rm \sqrt {24} = \sqrt{ 4*6} \\\\=\sqrt{4} * \sqrt{6} \\\\= 2 \sqrt{6}[/tex]

Therefore 24 is not a perfect square.

To know more about Perfect Square

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Noah is growing three different types of trees. He is keeping track of the height of each tree over time.

This equation represents the height (in feet) of the Tree #1 over m months: h=3.5m
The information is in the table is for Tree #2:

time (months) height of tree (feet)
2 5
4 10
5 12.5
8 20
This graph shows how long, in months, it takes Tree #3 to grow h feet.

A graph. Height, in feet. Time, in months.

Which tree is growing the slowest?

Answers

Answer:

Tree 3

Step-by-step explanation:

The equation for the height of tree 1 is given as:

h = 3.5m

The equation for the height of tree 2 is gotten using the points from the table (2,5) and (4, 10)

Hence:

[tex]h-h_1=\frac{h_2-h_1}{m_2-m_1}(m-m_1)\\\\h-5=\frac{10-5}{4-2} (m-2)\\\\h-5=2.5m-5\\\\h=2.5m \\[/tex]

From the graph of tree 3, we get the points (2,4) and (4, 8)

Hence:

[tex]h-h_1=\frac{h_2-h_1}{m_2-m_1}(m-m_1)\\\\h-4=\frac{8-4}{4-2} (m-2)\\\\h-4=2m-4\\\\h=2m \\[/tex]

Therefore tree 3 grows the slowest

Which of the following is not a method used on graphs to lead the reader to misinterpret the graph?
a.
Use inconsistent scales on one or both axes.
b.
Reverse the x- and y-axes to obtain a more convincing graph.
c.
Comparing two sets of related data on the same graph for the sake of comparison.
d.
Begin the scale of one or both axes at a number other than zero without notifying the reader.
its C

Answers

Answer:

Answer C is right

Step-by-step explanation:

edg 2021 got it right, its c

The method that is not used on graphs to lead the reader to misinterpret the graph is - Comparing two sets of related data on the same graph for the sake of comparison.

What is graph?

A graph is a intersection of {x} and {y} axis. On the graph, the coordinate points can be plotted in the form (x, y). In this, {x} represents the horizontal distance along the {x} axis and {y} is the vertical distance along the {y} axis.

Given is to identify the methods that are not used on graphs to lead the reader to misinterpret the graph.

The method that is not used on graphs to lead the reader to misinterpret the graph is - Comparing two sets of related data on the same graph for the sake of comparison.

Therefore, the method that is not used on graphs to lead the reader to misinterpret the graph is - Comparing two sets of related data on the same graph for the sake of comparison.

To solve more questions on graphs, visit the link below-

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Determine the slope of the line that contains the given points
(1-7) (5-7)

Answers

Answer:

the answer is 4

Step-by-step explanation:

Rise/run

y2-y1/x2-x1

7-7/1/5

4

Answer:

0/4

Step-by-step explanation:

7/5 - 7/1

Making the answer become 4

Help with evaluate and graph PLEASE HURRY

Answers

Answer:

Box 1 = -1

Box 2 = 8

Box 3 = 14

Simplify this expression

[tex]2 \sqrt{5(13 + \sqrt{2)} } [/tex]

Answers

Answer:

16.9789

You can round the answer

Answer:

D. [tex]26\sqrt{5} + 2\sqrt{10}[/tex]

Step-by-step explanation:

[tex]2\sqrt{5}(13+\sqrt{2})\\ \\26\sqrt{5}+2\sqrt{5}*\sqrt{2}\\\\\\26\sqrt{5}+2\sqrt{5}*2\\\\26\sqrt{5}+2\sqrt{10}[/tex]

triangle rst is congruent with VST is shown. given Line st is the perpendicular bisector of line RV prove triangle rst is congruent to triangle VST what is the missing reason in the proof

Answers

Answer:perpendicular bisector theorem

Step-by-step explanation:

Answer: A

Step-by-step explanation:

Please I really need help
For both questions please

Answers

Answer:

2 is A, 3 is C

Step-by-step explanation:

2 is A, and 3 is C. Hope this helps!

if you do it ill mark you brainly plz do it​

Answers

Answer:

A

Step-by-step explanation:

To find the change, we do final-beggining

since his first rating is -7 and his final rating is -2

-2-(-7)

E
2) Mrs. Anderson spent $305.70 at
Target. If the sales tax is 6%, what was
her final bill?

Answers

305.70 * .06 = 18.34
305.70 + 18.34 = 324.04

Solve the rational equation 2x+3/5=7/5
X=2
X=3.2
X=5
X=5.1

Answers

Answer:

x=0.4

Step-by-step explanation:

isolate the variable by dividing each side by factors that don't contain the variable

Find the value x ?
 (2x -10degree) (3x +20degree)​

Answers

Answer:

If we do square on both sides we get two answers i.e. (x+12)^2=(3x+20)^2

(x^2)+24x+144=(9x^2)+120x+400

(8x^2)+96x+256=0

(x^2)+12x+32=0

(x+4)(x+8)=0

x= -4 or x= -8.

Else we have another method

x+12=3x+20

x+12–20=3x

x-8=3x,

Now square on both sides.

(x-8)^2=(3x)^2

x^2–16x+64=(9x^2)

(9x^2)-(x^2)+16x-64=0

(8x^2)+16x-64=0

(x^2)+2x-8=0

(x+4)(x-2)=0

x= -4 or x= 2.

But It Didn’t Satisfy for The Equation When

x=2 or x= -8,So The Value of x will be -4 which satisfies given question.

PLZ Help Urgent. 15 POINTS, BRAINLY Guaranteed.
Plz Answer honestly or you will be reported.

Evaluate.

(−2)^6

Enter your answer in the box.

Answers

Answer:

-64

Step-by-step explanation:

I used a calculator lol.

The correct answer is 64
(-2)^6 take out the negative sign( you can't raise the exponent of a negative number)
2^6

2x2=4, 4x2=8, 8x2=16, 16x2= 32, and 32x2=64

Hope this helps :D

Help me please!! I’ll mark as brilliant!!

Liam’s mass is 102.1 kg
Choose the best approximation of Liam’s mass

A. 1 x 10^1
B. 1 x 10^2

Earth has an estimated mass of 5,972,000,000,000,000,000,000,000 kg
Choose the best approximation of earth’s mass

A. 6 x 10^21
B. 6 x 10^24

Approximately how many times as large is earth’s mass as liam’s mass?

A. 6 x 10^20
B. 6 x 10^21
C. 6 x 10^22

Answers

First one is B second one is B last one is C do you want me to explain

The answers are :

1. Liam has approximated mass equal to 1 × 10² kg.

2. Earth has approximated mass equal to 6 × 10^24 kg

3. Earth's mass is larger than Liam's mass by 6 × [tex]10^{22}[/tex].

What is algebra ?

Algebra is a branch of mathematics that deals with various symbols and the arithmetic operations such as division , multiplication , etc.

1)

Liam's mass is 102.1.

To represent the decimal number in approximation we need to multiply the first digit by power of 10 by moving the decimal place.

i.e., decimal number 102.1 can be written as :

= 1.02 × 10² kg

because decimal place moved towards left by 2 places.

or

= 1 × 10² kg

2)

Earth has an estimated mass of 5,972,000,000,000,000,000,000,000 kg.

This can be written as :

= 5.97 × 10^24

or

= 6 × 10^24 kg

3)

The earth's mass is larger than Liam's mass by :

= [tex]\frac{6 * 10^{24}}{1*10^{2} }[/tex]

= 6 × [tex]\frac{10^{24} }{10^{2} }[/tex]

= 6 × [tex]10^{22}[/tex]

Therefore , the answers are :

1. Liam has approximated mass equal to 1 × 10² kg.

2. Earth has approximated mass equal to 6 × 10^24 kg

3. Earth's mass is larger than Liam's mass by 6 × [tex]10^{22}[/tex].

Learn more about algebra here :

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If LIAR is a parallelogram, what is the value of X?
R
A
377x+3)
(2x+3
O A. 42
O B. 20
O c. 71.5
O D. 35
O E. 82
O F. 38.

Answers

The answer is B) 20 .

37 + (7x + 3) = 180

7x = 180 - 37 - 3

7x = 140

x = 20

Therefore, x = 20.

Answer:

20

Step-by-step explanation:

Write the ratio as a fraction in simplest form. A class has 8 boys and 14 girls. What is the ratio of boys to girls?

Answers

Answer:

4/7

Step-by-step explanation

8:14

8/14

4/7

So the answer is 4/7

Daniela y Jorge can en bicicleta y salen del mismo lugar, Daniela avanza 6km y luego retrocede 2km mientras que Jorge avanza 8km y retrocede 5km.

¿A que distancia se encuentra uno del otro?

¿Quien ha avanzado más de los dos?

¿Quien ha recorrido más km?

Answers

Answer:

a) 1 km

b) Amaya

c) Jorge

HOPE THIS HELPS ;P

What is 20000000 in standard form

Answers

Answer:

twenty million

Step-by-step explanation:

there are 7 zeros so the "20" part would be one number then there would be a comma and the 3 zeros and then another comma then the other 3 zeros

it would be 20 million

The opera theater manager believes that 23#% of the opera tickets for tonight's show have been sold. If the manager is accurate, what is the probability that the proportion of tickets sold in a sample of 869869 tickets would differ from the population proportion by less than 3%3%

Answers

Answer:

0.9642

Step-by-step explanation:

Sample proportion p follows a Normal distribution with mean = p0 = 0.23 and Standard deviation = √P0(1 - P0) / n = √0.23(1-0.23) / 869 = 0.0143

Then Z = p - mean / Standard deviation = X - 0.23 / 0.01343

P(0.2<p<0.26) = P(p<0.26) - P(p<0.2)

= P(p-023/0.0143 < 0.26-0.23/0.0143) - P(p-0.23/0.0143 < 0.2-0.23/0.0143)

= P(Z < 2.1) - P(Z < -2.1)

= 0.9821 - 0.0179

= 0.9642

Sales for May were $8,475. Calculate the markdown percent for May if the buyer took the following markdowns during the month: 21 shirts from $38 to $21, 15 shorts from $25 to $17, 32 halter tops from $32 to $22, 7 pants from $60 to $40, 8 skirts from $50 to $40

Answers

Answer:

kailangan mo ba sagot luh asa ka

Step-by-step explanation:

d kailangan ng brainy Kasi lahat ng tao asa lng

On picture day, the students are placed in order from tallest to shortest. Place the following students in order from tallest to shortest.

Javien is 4 2/3 feet tall
Danny is 3 11/12 feet tall
Samiya is 4 1/6 feet tall
Taylor is 4 7/8 feet tall

Answers

Answer:

4 7/8, 4 2/3, 4 1/6, 3 11/12

Step-by-step explanation:

To make it easier, convert it into decimals

4 2/3=4.666...

3 11/12=3.9166...

4 1/6=4.166...

4 7/8=4.875

A class roll has 30 students listed in alphabetical order. Exactly 5 of those students received A's in the course. What is the probability that at least two people who were adjacent on the alphabetical list both received A's?

Answers

Answer:tony stark

Step-by-step explanation:shake it out west

2. Determine whether each table of values represents a linear function. If so write the function. If not, explain why.

Answers

Answer:

lemme think i will anwser

Step-by-step explanation:

A linear function has a constant rate of change.

Table N represents a linear function

From the complete question (see attachment), we have the following highlights

Table M has the same x-values for y-values 2 and -3For each increment in the x-values of table N, there is a constant increment in the y-values.

The above highlights mean that:

Table M does not represent a linear function because it does not have a constant rateTable N represents a linear function because it has a constant rate

Read more about linear functions at:

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at the amusement park there were t shirts for sale for 18.95 each james bought 4 of them about how much did he spend?? ​

Answers

18.95 time 4 he spend $75

Which statement is most likely to show a constant rate of change???

A. The outside temp compared with the time of day.

B. The cost of a new car compared with the number of tires it has.

C. The weight of a child compared with its age in months.

D.The distance traveled by a truck driving at a constant speed compared with time.

Answers

I believe you answer would be D) The distance traveled by a truck driving at a constant speed compared with time.

m< AED = 16y + 10. Find the value of y so that ED I AB.

Answers

Full question attached:

Answer and explanation:

To calculate y in the equation <AED=16y+10 we first find the value of angle AED from the diagram(attached)

From the diagram, we can see that <AED = 180 degrees given that <AED is angle on a straight line=180 degrees.

The line AB is therefore perpendicular to line ED

Hence we calculate y in the equation <AED= 16y+10

180= 16y+10

180-10=16y

16y=170

y=170/16

y= 10.625

write 6.085 in word form

Answers

six and eighty-five thousandths

Find the integers m and n such that (m+n√2)(1-√2)²=-2+2√2​

Answers

m = n = 2 is the answer

Hope this helps

God bless

There are 3 cats in a room and no other creatures.each cat has 2 ears, 4 paws, and 1 tail

Answers

So there is a total of 6 ears, 12 paws, and 3 tails in the room.

Answer:

In the room there should be 6 ears, 12 paws, and 3 tails in total.

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