Answer:
1/4x+3/4
Step-by-step explanation:
Find the area and perimeter of a rectangle if the length is (x+7) and the width is (x+3).
Answer:
P=4x+20
A=x^2+10x+21
Step-by-step explanation:
Perimeter=2(x+7)+2(x+3)
2x+14+2x+6
4x+20
Area=(x+7)(x+3)
x^2+10x+21
l = (x + 3)
b = (x + 7)
Area:
= I x b
= (x + 3)(x + 7)
= x(x + 7) + 3(x + 7)
= x² + 7x + 3x + 21
= x² + 10x + 21
Perimeter:
= 2(l + b)
= 2((x + 3) + (x + 7)) = 2(2x + 10)
= 2(x + 3 + x + 7)
= 4x + 20
Can Someone help me please.
Answer:
120 degrees
Step-by-step explanation:
Angles 1 and 3 are congruent, because they are vertical angles, so we must set them equal to each other, solve for x and plug in x.
Hope this helps :-)
Answer:
3 = 108 degrees
Step-by-step explanation:
2x + 80 = 3x + 60
get the variable and number on different sides
2x + 80 = 3x + 60
2x + 80 - 80 = 2x
3x + 60 - 3x = 60
2x + 3x = 5x
60 + 80 = 140
5x = 140
now divide each side by 5
5x / 5 = x
140 / 5 = 28
x = 28
28 + 80 = 108
you are traveling on a bus to camp, which is 200 miles away, at 50 mph. the number of miles, n, that you have to travel after t hours.
Answer:
Step-by-step explanation:
the answer is 4 hours mark me brainliest pls
-2(a-3)=12 Solve for a.
-3
Step-by-step explanation:
-2a+6=12
collect like terms
-2a=12-6
-2a=6
divide both sides hy the coefficient of a
-2a/-2 =6/-2
a= -3
ab+c=de-f
solve for d
BUT SHOW ME THE STEPSS
Answer:
ab*e/2-c+f=d
Step-by-step explanation:
d = 2.426
my little brother needs help and my dad wont let me help him so im posting this for him HELP ASAP
Answer:
B- 19.84
Step-by-step explanation:
11
5/23
Classify the Number: -23
integer
Rational
Real, rational,
Integer
Real, irrational,
whole
DOLL
Answer:
rational, integer
Step-by-step explanation:
Please help I added a picture
Answer:
In one minute 4/3 of a cup will be filled.
Step-by-step explanation:
1/4 of a minute is 60 (seconds) divided by 4 = 15
15/60 = 1/4 of a minute
1/3 of a cup in 15 seconds
1/3+1/3+1/3+1/3 = 4/3
what is fourteen less than three fourths of a number is negative eight written as a equation
What is the value of x in the proportion below?
57=x21
Answer:
x=[tex]\frac{19}{7}[/tex]
Step-by-step explanation:
57=x×21
57=21x
21x=57
x=[tex]\frac{19}{7}[/tex]
Answer:15
Step-by-step explanation:
Add.
(2x3+4x2+1)+(x3−x2−4)
Express the answer in standard form.
Enter your answer in the box.
Answer:
3x³ + 3x² - 3
Step-by-step explanation:
Step 1: Write expression
(2x³ + 4x² + 1) + (x³ - x² - 4)
Step 2: Combine like terms
3x³ + 3x² - 3
The swimming pool is open when the high temperature is higher than 20°C. Laney tried to swim on Monday and Thursday the pool was open on Monday but it was closed on Thursday the high temperature it was 30°C on Monday but decreased at a constant rate in the next three days. What is an any quality to determine the rate of temperature decrease in degrees Celsius per day from monday to thursday
Answer:
30 - 3t ≤ 20
Step-by-step explanation:
Given that :
Pool is open when high temperature is higher than 20°C
From 30°C ; temperature decreased at a constant rate in the next three days ; that is the daily fall in temperature for 3 days is the same.
Let the fall or decrease in temperature = t
Constant decrease for 3 days = 3t
Change in temperature over 3 days :
Initial temperature - constant decrease
30°C - 3t
Hence, inequality to determine rate of temperature decrease :
30 - 3t ≤ 20
15. Radioactive nuclei are highly stable and emit radiation to become
unstable.
TRUE
FALSE
The statement radioactive nuclei are highly stable and emit radiation to become unstable is FALSE.
To determine if the statement is true or false we need to know what radiactivity is
What is radioactivity?Radioactivity is the spontaneous disintegration of unstable atomic nuclei to form stable more energetic nuclei with the emission of radiation.
Radioactivity includes the following
disintegration of a larger atomic nuclei to a smaller more stable nucleiEmission of radiationSo, radioactive nuclei which are unstable emit radiation and become more stable.
So, the statement radioactive nuclei are highly stable and emit radiation to become unstable is FALSE.
Learn more about here:
https://brainly.com/question/25756215
in a stick of chalk carbon is 3 g what is the weight of the chalk stick
Answer:
Hence the weight of chalk stick is 25 g.
Explanation:
Let the weight of a stick be x gm.
12% of x=3
(12/100)*x=3
x=3*(100/12)=25 g
Answer:
weight of chalk = 25gStep-by-step explanation:
let chalk contains 10x calcium, 3x carbon, 12x oxygen.
percentage of carbon in the chalk:
= 3x x 100
10x + 3x + 12x
= 3x ( 100 )
25x
= 3 (4)
= 12%
Now, we know that carbon has 12% of chalk.
weight of carbon = 12% x weight of chalk. ------------- equation
plugin values into the equation:
3 = 12% (weight of chalk)
3 = 12 (weight of chalk)
100
12 (weight of chalk) = 3
100
weight of chalk = 3 (100)
12
weight of chalk = 25g
5x-10+2x=7+7x-17
Choose the Correct answer below:
Sometimes true
Never true
Always true
Answer:
always true
Step-by-step explanation:
Simplify, and if possible solve the equation to find out
remember, inverse operations
5x - 10 + 2x = 7 + 7x - 17
simplify both sides
7x - 10 = 7x - 10
this is an identity, no matter the value of x put in, the equation will be true,
hence the equation is always true
Which terms are like terms in the following expression?
9x+6xy-4x+8x+6x squared
Answer:
9x and -4x
Step-by-step explanation:
Both 9x and -4x have the same variables? (Please correct if I am wrong..)
i neeeed helllllpppppsss
Answer:
#2
Step-by-step explanation:
Anne Pederson is driving to Cleveland, a distance of 324 miles. Her car gets 27 miles
per gallon, and gas costs $2.43 per gallon. How much does she spend for gas for the
trip?
Answer: 29.16
Step-by-step explanation:
1.)
324 ÷27= 12
2.)
2.43 x 12= 29.16
Which statement is true about 143? A. It is a prime number. B. It is a composite number. C. It is a whole number that is neither prime nor composite. D. It is not a whole number.
Answer:
B. It is a composite number.
Step-by-step explanation:
143 can be divided by 11 and 13 making it a composite number.
The number 143 is a composite number due to having more than two factors.
The factors of the number 143 are 1, 11 and 13.
What is the difference between a prime number and a composite number?Prime number has only two factors i.e. 1 and the number itself while composite numbers can have more than two factors.
143 = 1*11*13
Since the number 143 has 3 factors i.e. 1, 11, and 13.
So, The number 143 is a composite number.
Therefore, The number 143 is a composite number due to having more than two factors.
To get more about composite numbers visit:
https://brainly.com/question/24820928
Match these items. 1. insects, birds epidermis 2. moss, trees monerans 3. yeast, molds reproductive parts 4. protozoa, red algae kingdoms 5. bacteria, blue-green algae plants 6. five main groups of all living things vegetative parts 7. the study of plants fungi 8. flowers, fruits, and seeds protists 9. roots, stems, and leaves botany 10. provides plant cover on leaves and roots animals
Answer:
1. Animals.
2. Plants.
3. Fungi
4. Protists.
5. Monerans.
6. Kingdom.
7. Botany.
8. Reproductive parts.
9. Vegetative parts.
10. Epidermis.
Step-by-step explanation:
1. Insects, birds: Animals. All insects and birds are living organisms generally referred to as animals.
2. Moss, trees: Plants. Moss and trees are living organisms generally referred to as plants.
3. Yeast, molds: Fungi. They belong to a kingdom of multi-cellular eukaryotic organisms which can't make or produce their own food (heterotrophs).
4. Protozoa, red algae: Protists. They belong to a kingdom of single-celled (unicellular) eukaryotic microscopic organisms.
5. Bacteria, blue-green algae: Monerans. They belong to a kingdom of single-celled (unicellular) prokaryotic organisms without a nuclear cell membrane.
6. Five main groups of all living things: Kingdom. These are namely Kingdom Animalia, Kingdom Fungi, Kingdom Plantae, Kingdom Monera and Kingdom Protista
7. The study of plants: Botany.
8. Flowers, fruits, and seeds: Reproductive parts.
9. Roots, stems, and leaves: Vegetative parts.
10. Provides plant cover on leaves and roots: Epidermis.
IND 11. Kim is arranging magazines on shelves. She has 18 sports magazines and 24 news magazines. Each shelf will have the same number of sports and news magazines. If Kim must place all of the magazines on shelves, what are all the possible numbers of shelves Kim can use?
Find the multiples of each number:
18: 1 , 2 , 3 , 6 , 9 , 18
24: 1, 2, 3, 4, 6 , 8, 12, 24
Now find the matching numbers:
1 , 2, 3 , 6
Which correctly lists three characteristics that are used to describe air?
altitude, density, radiation
density, radiation, mass
mass, pressure, density
pressure, altitude, radiation
Answer:
mass, pressure, density is the right answer
Step-by-step explanation:
The three main characteristics that can be used to describe air are: C. mass, pressure, density.
What Characteristics can be Used to Describe Air?Altitude deals with elevation of an object.
Radiation relates to transmission of energy through a medium in form of waves.
Air has mass, pressure, and density.
Therefore, the three main characteristics that can be used to describe air are: C. mass, pressure, density.
Learn more about characteristics of air on:
https://brainly.com/question/15536453
WHAT IS 5 X 3 TO THE POWER OF 3
Answer:
The answer is 3,375
Step-by-step explanation:
5 x 3=15
15 to the 3rd power is 15 x 15 x 15
15 x 15 x 15= 3,375 :)
0.6399 round to the nearest tenth
ANSWER : 0
EXPLANATION :
consider the equation x/3 +7 =13 what is a equvalent equation using the multipucation property of equlity
Answer:
x=18
Step-by-step explanation:
calculate the areas of these rectangles
A(a) = 24 cm²
A(b) = 40.04 cm² ≈ 40 cm²
Step-by-step explanation:Hi there !
area formula (rectangle)
A = l × w
A(a) = 8cm × 3cm = 24 cm
A(b) = 5.2cm × 7.7cm = 40.04 cm² ≈ 40 cm²
Good luck !
Need help asap! Tysmmm
Answer:
109.6cm^2
Step-by-step explanation:
To find the area of a trapezoid the formula is (a+b)/2*h so for this problem, (12+15.4)/2*8= 27.4/2*8= 13.7*8=109.6cm^2
Hope this helped you out! :)
equivalent of 100 sqrt 2
Answer:
141.421356237
i need help with this q9
Answer:
no
Step-by-step explanation:
A proportional relationship must go through the point ( 0,0). This does not go through the origin so this is not proportional
The relationship is linear but non proportional. The graph is a line but it does not go through the origin.
Show that (3+4)2−(3−4)2−(4)(4)=32
Answer:
Explanation below
Step-by-step explanation:
(3+4)= 7
7+2 = 9
-(3-4) (Invisible one)
-3+4 add to the 9
10
10+2= 12
12-4=8
8×4 =32
Sorry if this seems a bit confusing, but its quite hard to show the process without paper.
Hope this helps! :)