Answer:
It will take 60 hours for 2 elephants to set up the tent.
Step-by-step explanation:
Represent set-up time by T and the number of elephants by E. T varies inversely with E:
T = k/E, or TE = k
If 4 elephants can set up a tent in 30 hours, then 30(4) = k, and
T = 120/E
Now let E = 2. We get T = 120/2, or 60
It will take 60 hours for 2 elephants to set up the tent.
The store's rectangular floor is 42 meters long and 39 M wide how many square meters of flooring do they need use estimation access to the reasonableness of your answer
Answer: They need to use 1,638 square meters of flooring.
Step-by-step explanation:
Hi, to answer this question we have to analyze the information given, and apply the next formula:
Area of a rectangle: length x width
Replacing with the values given and solving for the area (A):
A = 42 x 39 = 1,638 m2
They need to use 1,638 square meters of flooring.
Feel free to ask for more if needed or if you did not understand something.
The price of a rare collection car has increased exponentially
over the past few years with a rate of increase estimated at 5% per year.
At the start of 2015 the value of the car was estimated at £265000.
Estimate the value of the car at the start of 2010.
Round your answer to 3 significant figures.
Answer: £208,000
Step-by-step explanation:
Hi, to answer this question we have to apply an exponential growth function:
A = P (1 + r) t
Where:
p = original price
r = increase rate (decimal form)
t= years (2015-2010 =5 years)
A = price after t years
Replacing with the values given:
265,000 = p (1+ 0.05)^5
Solving for p
265,000 = p (1.05)^5
265,000 = p (1.05)^5
265,000/ (1.05)^5 =p
p = £207,634. =208,000 (rounded)
Feel free to ask for more if needed or if you did not understand something.
Answer:
208,000
Step-by-step explanation:
Solve for d.
–4(–3d − 3) = 6d
d =
Answer:
d = -2
Step-by-step explanation:
→Distribute the -4 to (-3d - 3)
-4(-3d - 3) = 6d
12d + 12 = 6d
→Subtract 6d from both sides:
6d + 12 = 0
→Subtract 12 from both sides:
6d = -12
→Divide both sides by 6:
d = -2
Answer:
[tex] \boxed{d = -2} [/tex]
Step-by-step explanation:
[tex]= > - 4( - 3d - 3) = 6d \\ \\ = >( ( - 4) \times ( - 3d)) - ( - 4 \times 3) = - 6d \\ \\ = > 12d + 12 = 6d \\ \\ = > 12d - 6d + 12 = 0 \\ \\ = > 6d + 12 = 0 \\ \\ = > 6d = - 12 \\ \\ = > d = - \frac{12}{6} \\ \\ = > d = - 2[/tex]
Ratio of three angles of a triangle is 1 : 2 : 3. Find the angles.
Answer:
30⁰ , 60⁰ , 90⁰
Step-by-step explanation:
Let the angles x , 2x , 3x
By angle sum property:
x + 2x + 3x = 180⁰
6x = 180⁰
x = 30⁰
Angles are : 30⁰ , 60⁰ , 90⁰
Answer:
30°, 60°, 90°
Step-by-step explanation:
The sum of the 3 angles in a triangle = 180°
Sum the parts of the ratio, 1 + 2 + 3 = 6 parts
Divide to find the value of one part of the ratio
180° ÷ 6 = 30° ← value of 1 part of the ratio, thus
2 parts = 2 × 30° = 60°
3 parts = 3 × 30° = 90°
Thus angles are 30°, 60° and 90°
Given: ∠1 =∠ 4 ∠ B = ∠D Prove: AD = CB Which of the following triangle congruence theorems would be used in this proof? A. SAS B. ASA C. AAS
Answer:
Step-by-step explanation:
<2=180-(1+B)
<3=180-(4+D)
trg ACB=trgACD(<2=<3, AC =AC, <1=<4
ASA
I hope you can see but can somebody please help me with this?
Answer:
c find the value
Step-by-step explanation:
plz workout
Identify the Domain and Range of the graph below:
Answer:
Domain: ∞
Range: y ≥ -4
Step-by-step explanation:
The domain of any quadratic function is always infinite or ∞. The range ends where the minimum value is or the maximum value depending on which way the parabola is facing- upward or downward.
If x=1+√2, evaluate x³+1/x³.
Answer:
18
Step-by-step explanation:
So we start solving like:
x+1x=3
(x+1x)3=33
x3+3.x2.1x+3.x.1x2+1x3=27
(x3+1x3)+3.x2.1x+3.x.1x2=27
x3+1x3+(3x+3x)=27
x3+1x3+3(x+1x)=27
x3+1x3+3×3=27
x3+1x3+9=27
x3+1x3=18
Therefore the answer is 18
what is the equation of a circle with center (5, -8) and diameter 4?
Answer:
is 8 porque s mi nose maje
Laura and Andy are trying out for a part in a school play. There is a total of 9 students trying out for the same part. If the students are chosen at random to audition, what is the probability that Laura will go first and Andy second?
The probability that Laura will go first and Andy second is 1/210
Jenny is going to tile her kitchen floor. She has taken out all the furniture and appliances. Below is the floor
plan of her kitchen.
2.5m
1.5m
14m
Jenny wants to know if she has got enough money to buy the tiles.
The tiles are sold in packs, which cover 3m
Jenny has a discount card which gives her 25% off any marked price at the DIY shop.
The tiles are marked at £14.40
Jenny has £100 to spend on the tiles.
How much extra does Jenny need to buy the tiles?
Give your answer in pence.
Answer:
Jenny needs £8 extra to buy the tiles.
Step-by-step explanation:
Jenny's kitchen floor is in the form of trapezoid.
Area of a trapezoid = [tex]\frac{1}{2}(b_1+b_2)h[/tex]
[tex]=\frac{1}{2}(2.5+1.5)14[/tex]
= 28 meter²
One pack of tiles covers the area = 3 meter²
She needs the number of packs of tiles = [tex]\frac{\text{total area }}{\text{area covered by one pack of tile}}[/tex]
[tex]=\frac{28}{3}[/tex]
= 9.33
Therefore, she has to purchase 10 packs of tiles.
Since the price of one pack of tiles = £14.40
Price of 10 packs of tiles = 14.40 × 10
= £144
Price after using discount card of 25% = 144 -(25% of 144)
= 144 - (0.25 × 144)
= 144 - 36
= £108
Jenny has £100, so she needs £8 extra to buy the tiles.
If C is the midpoint of AB and AB = 20, what is AC?
Answer:
AC = 10
Step-by-step explanation:
AC+ BC =AB
If C is the midpoint then AC = BC
AC + AC = 20
2 AC = 20
Divide by 2
2AC /2 = 20/2
AC = 10
Answer:
AC=10
Step-by-step explanation:
If a-------c-------b and AB=20 and C is the midpoint, then half of 20 would be 10.
If f(x) = x2 + 1 and g(x) = 3x+1, find f(2) + g(3).
Answer:
ES IGUAL A 15
Step-by-step explanation:
what is the answer for this equation 8k - 62 = 2 plz answer this correctly
Answer:
k = 8
Step-by-step explanation:
You are solving for the variable, k. Note the equal sign, what you do to one side, you do to the other.
Do the opposite of PEMDAS. PEMDAS =
Parenthesis
Exponents
Multiplications
Division
Addition
Subtraction
First, add 62 from both sides:
8k - 62 = 2
8k - 62 (+62) = 2 (+62)
8k = 2 + 62
8k = 64
Next, divide 8 from both sides:
(8k)/8 = (64)/8
k = 64/8
k = 8
8 is your answer for k.
~
HELPPPPPP ITS ABOUT EQUATIONSSSS HELPPPPP
Explanation needed
Answer:
C. the average total cost for the first month of a gym membership
Step-by-step explanation:
x=1 is for month 1,
the value of y includes 1-month fee and one off payment, so this is the average total for the first month of membership
can some one help me this please
Don Julio tiene 42 años de edad y Rubén 18,
¿en qué razón están las edades de Rubén y don
Julio?
A) 3 : 4
B) 3 : 5
C) 3 : 6
D) 3 : 7
E) 3 : 8
Answer:E
Step-by-step explanation:
In Triangle A B C, what is the value of x? Triangle A B C. Angle A is 112 degrees. Exterior angle to angle B is 2 x degrees and the exterior angle to angle C is (2 x + 12) degrees.
Answer:
70°
Step-by-step explanation:
∠A =112°,
Exterior angle to angle B is 2x, therefore ∠B = 180 -2x (angle on straight line)
Exterior angle to angle C is 2x + 12, therefore ∠C = 180 -(2x +12) (angle on straight line) = 180 - 12 -2x = 168 - 2x
∠A + ∠B + ∠C = 180 (sum o angles in a triangle)
112 + 180 - 2x + 168 - 2x = 180
460 - 4x = 180
4x = 460 - 180 = 280
x = 280/4 = 70
x = 70°
Answer:
70º
Step-by-step explanation:
i took the test
What is the circumference AND area or circle C?
Answer:
[tex]56.55[/tex] [tex]in[/tex]
[tex]254.47[/tex] [tex]in^{2}[/tex]
Step-by-step explanation:
[tex]C=\pi d[/tex]
[tex]C=18\pi[/tex]
[tex]C=56.54866776[/tex]
[tex]A=\pi r^{2}[/tex]
[tex]A=\pi(9)^{2}[/tex]
[tex]A=81\pi[/tex]
[tex]A=254.4690049[/tex]
Please answer CORRECTLY !!!!!! Will mark BRAINLIEST !!!!!!!!!
Answer:
Is this correct
Simplify √108+√125-√75
Answer: Answer in the photo
Step-by-step explanation:
Answer:
12.91
Step-by-step explanation:
find the square roots ;
10.39 + 11.18 - 8.66 = 12.91
In Mrs. Nathan's class, there are 16 boys and 20 girls. What is the ratio of girls to boys in Mrs. Nathan's class?
Answer:
5:4
Step-by-step explanation:
In Mrs. Nathan's class, the ratio of girls to boys is 5:4.
What is ratio?The ratio can be defined as the number that can be used to represent one quantity as a percentage of another. Only when the two numbers in a ratio have the same unit can they be compared. Ratios are used to compare two objects.
Given, In Mrs. Nathan's class, there are 16 boys and 20 girls.
the ratio of girls to boys = 20/16
the ratio of girls to boys = 5/4
Therefore, the ratio of girls to boys in Mrs. Nathan's class is 5: 4.
Learn more about ratios here:
https://brainly.com/question/13419413
#SPJ1
In the triangle below, what is the length of the side opposite the 60° angle?
Answer:
C. 3√3
Step-by-step explanation:
Remember your 30-60-90 triangle rules.
They give you 3 as a side in the 30-60-90. That side length 3 will be your x. The side opposite of it is x√3. Simply plug in 3 as it is x and you should get 3√3 as your answer.
Answer:
C
Step-by-step explanation:
In all 30 60 90 triangles, the side opposite the 60 degree angle will be the short leg times [tex]\sqrt{3}[/tex]
So, the length of that side in this triangle will be 3[tex]\sqrt{3}[/tex]
Please answer correctly !!!!!!!! Will mark brainliest !!!!!!!!!!
Answer:
The equation are:
1) h + s = 20
2) 4h = 1s
Step-by-step explanation:
Number of hats Elliott made = h
Number of scarfs Elliott made = s
total number of items Elliott made = 20
h + s = 20 ..[1]
1 hat uses 0.2 kilograms of yarn
1 hat = 0.2 kg of yarn
Then h hats will use = 0.2h kg of yarn
1 scarf uses 0.1 kilograms of yarn
1 scarf= 0.1 kg of yarn
Then s scarfs will use = 0.1s kg of yarn
She wants to twice as much as yarn for scarves for hats:
2 × (0.2h kg of yarn) = 0.1s kg of yarn
0.4h = 0.1s
4h = 1s...[2]
The equation are:
1) h + s = 20
2) 4h = 1s
Answer:C
0.1s=2•0.2h
H+S=30
Step-by-step explanation: I did it on khan
Teresa is 25 years old, and she makes $30,000 per year. If Teresa were to die,
how much would the beneficiaries of her life insurance policy receive if they
can get by on 75% of her income?
Answer:
They would receive $22,500 which is 75% of her income
Step-by-step explanation:
Here, we want to know how much the beneficiaries of a life insurance scheme would receive if their principal die.
From the question, we are told that they have the right to claim 75% of her income
From the question also, we were told that what she earns per annum is $30,000
Now, since they have the right to claim 75%, the amount they can claim out of the said income will be;
75/100 * $30,000 = $22,500
Answer:225,000
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Please answer this math question !! Thank u !! 20 POINTS AND BRAINLIEST!!
Answer:
infinite solutions
Step-by-step explanation:
Given the 2 equations
y = 6x - 3 → (1)
12x - 2y - 6 = 0 → (2)
Substitute y = 6x - 3 into (2)
12x - 2(6x - 3) - 6 = 0 ← distribute and simplify left side
12x - 12x + 6 - 6 = 0
0 = 0
This solution 0 = 0 indicates that any value of x is a solution
Thus there are an infinite number of solutions to the system
A circle is centered at Q(1,-5) and has a radius of 5. Where does the point Y(4,-1) lie?
Answer:
Point Y (4, -1) lies on the circle.
Step-by-step explanation:
Distance = √[(x2-x1)² + (y2 - y1)²] = √[(4-1)² + (-1-(-5))²] = √[3² + 4²]= √25 = 5
Point Y (4, -1) lies on the circle, because the distance from the center to this point equals radius of the circle.
Answer:
On the circle
Step-by-step explanation:
Please answer correctly !!!! Will mark brainliest !!!!!!!!!!!!!!
Answer:
A
Step-by-step explanation:
) Dara invests $800 at 12.5% per annum compound
interest compounded half- yearly .What in his amount of
interest at the end of the first year?
answer: $1,012.50
Step-by-step explanation:
12.5 ÷ 100 = 0.125
0.125 × 800 = 100
800 + 100= 900 ( half-yearly interest)
0.125 × 900 = 112.5
900 + 112.5 = $1,012.50 ( end of first year interest)
find the area of the shape
37.68 is the area of the Pac-Man