Answer:
3
Step-by-step explanation:
(1+3)2-10÷2
1+3=4
4x2=8
10÷2=-5
8-5=3
i am rubbish plz help will mark brainiest for whoever gets it right
Answer:
23 cars are silver!
Step-by-step explanation:
A rectangular room measures 15 feet by 18 feet. It is going to be carpeted with carpeting that sells for $38 per square foot.
a. What is the area of the room in square feet?
_square feet
b. If the room is drawn to 1/4 inch represents 1 foot scale, give the dimension of the room in inches on the scale drawing. Please write in
decimal form to the nearest hundredth.
c. What is the total price for the carpeting? _
d. This room is well insulated and is on the south side of the house. It has an
require? Write the exact.
_BTUS
foot high ceiling. How large an air conditioner would this room
Answer:
a. 270 square feet
b. 3.75 inches by 4.5 inches
c. $10,260
Step-by-step explanation:
A rectangular room measures 15 feet by 18 feet. It is going to be carpeted with carpeting that sells for $38 per square foot.
a. What is the area of the room in square feet?
Area of a rectangular room = Length × Width
Length = 15 feet
Width = 18 feet
Area of the room = 15 feet × 18 feet
= 270 square feet
b. If the room is drawn to 1/4 inch represents 1 foot scale, give the dimension of the room in inches on the scale drawing. Please write in decimal form to the nearest hundredth.
From the above question:
1/4 inch = 1 foot
Length = 15 feet
Hence:
1 foot = 1/4 inch
15 feet = x inch
Cross Multiply
x = 15 × 1/4 inch
x = 3.75 inches
For the Width = 18 feet
Hence:
1 foot = 1/4 inch
18 feet = x inch
Cross Multiply
x = 18 × 1/4 inch
x = 4.5 inches
Therefore, the dimensions of the room in inches is
3.75 inches by 4.5 inches
c. What is the total price for the carpeting? _
From the above question, we know that: A square foot of carpet is sold for $38
The area of the room is 270 square feet
Hence:
1 ft² = $38
270 ft² = $x
Cross Multiply
1ft² × $x = 270 ft² × $38
$x = 270 ft² × $38/ 1 ft²
$x = $10,260
Therefore, the total price for the carpeting of the room is $10,260.
A population of insects, in thousands, can be molded using the function (t)= 1.75(0.97)x
Question:
A population of insects, in thousands, can be modeled using the function
[tex]p(t) = 1.75(0.97)^t[/tex], where t is time in months. Which statement best
describes the population of insects?
A. The population is decaying at a rate of 3% each month.
B. The population is decaying at a rate of 25% each month.
C. The population is growing at a rate of 75% each month.
D. The population is growing at a rate of 97% each month.
Answer:
A. The population is decaying at a rate of 3% each month.
Step-by-step explanation:
Given
[tex]p(t) = 1.75(0.97)^t[/tex]
Required
True statement about the function
From the options, we can see that we are to answer the question on the basis of decay and growing rates.
An exponential form is:
[tex]y=ab^x[/tex]
Compare to [tex]p(t) = 1.75(0.97)^t[/tex]
[tex]b= 0.97\\[/tex]
If [tex]b > 1[/tex], then [tex]b = 1 + r[/tex] r represents growth rate
else, [tex]b= 1-r[/tex] r represents decay rate
Since b < 0.97:
[tex]0.97= 1-r[/tex]
[tex]r = 1 - 0.97[/tex]
[tex]r = 0.03[/tex]
[tex]r = 3\%[/tex]
[tex]r = 0.03[/tex]
Beth pays for her phone each month based on the number of hours that she uses. Each month she pays $12 for her phone and $2.50 per hour she is using it. What is the total charge for a month in which Beth used the Internet for 90 hours?
Answer:
$237
Step-by-step explanation:
(# of hrs x $ per hr = total $ for all hrs)
90(hrs) x 2.5($ per hr) = 225(total $ fro all hrs)
(total $ for all hrs + initial payment per month = anwer)
225(total $ fro all hrs) + 12(initial payment per month) = 237(answer)
What is the value of v?
(This is 7th-grade math btw)
Answer:
Step-by-step explanation:
v = 40° ( being vertically opposite angles )
K=39 and j=10 what's k/3 + j
Answer:
39/3 + 10 = 23
Step-by-step explanation:
I did the math and then reviewed it to make sure it was correct with Chegg
468 raffle tickets for 52
people
What’s the answer ?
Answer:
9
Step-by-step explanation:
you divide 468 by 52
468/52 = 9
9
Step-by-step explanation:
468/52 = 9 tickets per person
A pentagon with an apothem 316.6 millimeters long and a side 460 millimeters long. Find the perimeter and area
If a sporting goods store has 40 basketballs, 39 baseballs, 24 footballs, 51 hockey pucks, and 16 lacrosse sticks.
Write the following ratio in simplest form.
Lacrosse Sticks to Basketballs
Answer:
40/16
2/5
Thus the ratio
= 2:5
Kayla is pricing whole wheat flour.
A 5-pound bag at Bargain Mart costs $6.45.
A 2-pound bag at Food Saver costs $2.50.
A 7-pound bag at Grocery Surplus costs $9.45
A 10-pound bag at Economart costs $12.89.
The shop with which sells flour for the lowest unit price is
Answer:
Food Saver
Step-by-step explanation:
6.45 ÷ 5 = 1.29
2.50 ÷ 2 = 1.25
9.45 ÷ 7 = 1.35
12.89 ÷ 10 = 1.289
Food Saver sells for $1.25 per pound, which is the lowest.
Answer:
Food Saver
Step-by-step explanation:
Bargain Mart: 6.45/5 = $1.29/lb
Food Saver: 2.50/2 = $1.25/lb
Grocery Surplus: 9.45/7 = $1.35/lb
Economart: 12.89/10 = $1.29/lb
I really need to get this done quick.
The surfboard is 14 inches taller than the person.
Write and solve an equation to determine how tall is the person?
This is giving me hard time someone help ASAP. I really need it because I been trying to solve it and cant
The circumference of a circular mirror is 31.4 cm. What is the area of the circular mirror in square centimeters? Use pi = 3.14 .
Answer : AREA OF A CIRCLE = PIR2 ( PI ×R ×R )
N.B = R MEANS RADIUS.
GIVEN THE CIRCUMFERENCE, WE WILL USE THE CIRCUMFERENCE TO FIND THE RADIUS.
FORMULA FOR FINDING RADIUS = CIRCUMFERENCE ÷ 2 × 3.142.
SO THAT IS : 31.4 ÷ 6.284 = 4.9. ROUND UP : 5. SO THE RADIUS IS 5. NOW WE CAN FINDING THE AREA. 3.14×5×5 = 78.5 . Say thanks Nique.help me plssss lsss i really need help today like today today
Answer:
1. Reflection across the x-axis:
1) (-2,-2)
2) (-1,-4)
3) (3,-4)
2. Reflect across the y-acis:
1) (-1,-3)
2) (-2,1)
3) (-4,1)
Brainiest PLZZZ
A triangle has sides with lengths of 50 meters, 57 meters, and 79 meters. Is it a right
triangle?
yes
no
A florist creates 46 floral arrangements every 3 days. How many floral arrangements will the florist create in 3 weeks?
Answer:
322
Step-by-step explanation:
In a survey, 250 people were asked to choose one card out of five cards labeled 1 to 5. The results are shown in the table. Compare the theoretical probability and experimental probability of choosing a card with the number 4 .
Answer:
the theoretical probability would be 20%, the experimental probability, i would need to see the table for.
good luck, i hope this helps :)
which term is a perfect square of the root 3x4?
Answer:
4
Step-by-step explanation:
Answer:
9x^8
Step-by-step explanation:
good luck
I need help with this one and other question that I put
please help me this is for a grade
Answer:
A, B, and D are congruent
Step-by-step explanation:
In a map, 8 cm represent 2km. Write the scale of the map.
Answer:
1:25000
Step-by-step explanation:
2km =2000m =200000cm
200000/8=25000
Jasmine had $120,000 last year. This year she has $50,000
What is the percentage difference?
The percentage difference if Jasmine had $120,000 last year and this year she has $50,000 is 41.6%.
What is percentage?As it is clear from the term per cent means measuring anything per hundred. For example, you get marks per 100 marks, so you get the percentage.
Given:
The last year value = $120000,
The new value of this year = $50000,
Calculate the percentage by the following formula,
Percentage difference = The new value of this year / The last year's value ×100
Substitute value
Percentage difference = 50000 / 120000 × 100
Percentage difference = 41.6%
Therefore, the percentage difference if Jasmine had $120,000 last year and this year she has $50,000 is 41.6%.
To know more about percentages:
https://brainly.com/question/26080842
#SPJ5
Consider these three squares with known area.
3 squares. The smallest square is labeled 25, the next square is 144, and the largest square is 169.
Can a right triangle be formed using these squares?
Yes, the sum of the two smaller squares does not equal the largest square.
Correct ---- > Yes, the sum of the two smaller squares equals the largest square.
No, the sum of the two smaller squares does not equal the largest square.
No, the sum of the two smaller squares equals the largest square.
Answer:
512
Step-by-step explanation:i think so
Answer:
The second one
Step-by-step explanation:
I got it right
identify the missing number 41, 48,33,40,62,55,54,?,
Answer:
47
Hope it helps
Please mark me as the brainliest
Thank you
Answer:
can I get how you solved it
What is the slope m of the graphed line?
Ny
Answer:
A
Step-by-step explanation:
Answer:
A) m=0
Step-by-step explanation:
What is 16% of 80?
PLEASE DO NOT SOLVE, I KNOW THE ANSWER IS 12.8. JUST WRITE A PROPORTION ON HOW YOU GET THE ANSWER
Answer:
12.8
Step-by-step explanation:
(16÷100)×80 = 12.8
Add the following lengths:
2'5"
+ 4'8"
------------
plsss i'm doing a test i'l give brainliest lolol okay bye ty if u answer ok bye
Answer:
7'1"
Step-by-step explanation:
6 feet and 13 inches... you take 12 and make another foot and leave the one inch
What is the fifth exterior angle measure?
Answer:
50
Step-by-step explanation:
Adds up to 360 degrees
Tyler’s brother earns $15 per hour. The store offers him a raise—a 5% increase per hour. After the raise, how much will Tyler’s brother make per hour? i really need help
Answer:
$75per hour
Step-by-step explanation:
15×5=75 jshshhsbw
it has to be a exponent
Answer:
7
when dividing exponents with the same base, you subtract them. so, 11-7 = 4