Answer:
It's surface area is 1257.14cm^2
Step-by-step explanation:
area=22/7×20cm×20cm
=3.14×20cm×20cm
=1257.14cm^2
CAN I HAVE SOME HELP!!!!
Answer:
I believe is C
if not I'm sorry.
I need help with this question
HELP ME ASAP REALLY NEED HELP
Answer:
it is B
Step-by-step explanation:
y intercept is -3 and you go up 3 over 4
Evaluate the expression w 2 - v + 1 for w = -2 and v = -8.
5
13
-11
-3
Answer:
Is the w2, w(2) or
[tex] {w}^{2} [/tex]
?
If it's w(2) the answer is -4--8+1=-4+8+1=5
if it's w^2 then the answer would be 4--8+1=4+8+1=13
A garden is in the shape of a right triangle. The base of the triangle is 12m, and the garden covers an area of 30m squared. What length of fence is needed to surround the garden?
Answer:
= 30m
Step-by-step explanation:
to find the length of the fence, find the perimeter of the triangle.
that is b + h + hyp assuming b is the base, h is height and hyp is hypotenuse.
we have the base; height and hypotenuse are not given.
to get the height,
area(A) = 30m2
base(B) = 12m
height(H) = ?
A = 0.5 x B x H
30m2 = 0.5 x 12m x H
30m2 = 6m x L
H = 30m2 / 6m
H = 5m
to get the hypotenuse,
we have to complete the Pythagorean family the base ,12, and height, 5. is in.
formula = a2 + b2 = c2, c is the hypotenuse, a and b can be interchanged either way with base and height.
= (12 x 12) + ( 5 x 5) = c2
= 144 + 25 = c2
= 169 = c2
c2 = 169
c = 13
perimeter = b + h + hyp
= 5 +12 + 13
= 30m
A rectangular pyramid has a height of 8 meters. The base is 7 meters in length and 15 meters in width two different triangular cross sections are formed through the vertex and perpendicular to the base and to each other. What is the difference in the areas of the cross section? help- please-
Answer:
The difference in the areas of the cross section is 32 m²
Step-by-step explanation:
The given parameters are;
The height of the rectangular pyramid = 8 meters
The length of the base of the pyramid = 7 meters
The width of the base of the pyramid = 15 meters
Whereby triangular cross sections are formed through the vertex and perpendicular to the base, and to each other, we have;
The sides of the two triangles consists of the following;
1) Two slant height of the pyramid each
2) The two perpendicular lines joining the midpoints of the opposite sides of the base of the pyramid with length equal to the length of the adjacent side to the sides from which they are drawn which are 15 meters and 7 meters
3) The two lines and the corresponding slant height form triangles cross section which are perpendicular to each other.
the slant height, [tex]h_l[/tex], is given as follows;
[tex]h_l[/tex] = √(8² + (15/2)²) ≈ 10.966
For the triangular cross section with base = 15 m
The area of the cross section = 1/2 × Base₁₅ × Height = 1/2 × 15 m × 8 m = 60 m²
For the triangular cross section with base = 7 m
The area of the cross section = 1/2 × Base₇ × Height = 1/2 × 7 m × 8 m = 28 m²
The difference in the areas of the cross section = 60 m² - 28 m² = 32 m².
How many years, to the nearest tenth, will be needed for $5000 to increase to $18000 at 3.0% annual interest compounded
Complete question :
How many years, to the nearest tenth, will be needed for $5000 to increase to $18000 at 3.0% annual interest compounded monthly
Answer:
Step-by-step explanation:
Initial amount (P) = 5000
Final amount (A) = 18000
Interest rate (r) = 3% = 0.03 compounded monthly
A = P(1 + r/n)^nt
n = number of compounding timea per period
18000 = 5000(1 + 0.03 / 12)^12t
18000 / 5000 = (1 + 0.0025)^12t
3.6 = (1 + 0.0025)^12t
3.6 = 1.0025^12t
Take the In of both sides
1.2809338 = 1.03t
t = 1.2809338 / 1.03
For every | | followers Brianna has, Mia has | | followers.
HELP MEE
Which unit rate is the lowest price per ounce? (5 points)
Choice A: 7 ounces of cranberries for $2.98
Choice B: 18 ounces of ranberries for $7.18
a
Choice A
b
Choice B
c
The unit rates are equal.
d
The unit rates cannot be determined.
s= ut + 12 at
u = 10
a = -2
t = 1/2
Work out the value of s.
Answer:
Solution in photo
Step-by-step explanation:
What is -2 >_ 7x + 5
Answer:
x≤−1
Step-by-step explanation:
Answer ASAP for brainly
Answer:
2
Step-by-step-
It would equal both the numbers combined
Gary is making a model of the garage he is going to build in his backyard. The actual length of the garage is 75 feet. The model's length is 15 inches. Complete the scale: 1 in. = ?.
Answer:
The scale: 1 inches = 5 feet
Step-by-step explanation:
Given:
Actual length of backyard = 75 ft
Model's length = 15 inches
Complete;
The scale: 1 inches = ?
Computation:
The scale = Actual length of backyard / Model's length
The scale = 75 / 15
The scale = 5 ft
So,
The scale: 1 inches = 5 feet
Explain how to use multiplication to divide a whole number by a fraction.
Answer:
You are multiplying the whole number with the reciprocal of the fraction.
Step-by-step explanation:
To divide a whole number by fraction.
You are taking X which is a whole number over the fraction.
its the same as taking x and multiplying it by the reciprocal of the fraction
So if you have 5 divided by 1/2, it's the same as saying 5 times 2/1.
Can someone help me with these?
Based on the table of values in Question 3, does the equation y = |x| represent a function?
Doug left $3 as a tip on a lunch bill of $14.
Which proportion can be used to find the percent tip Doug left?
A) 3/14 = n/100
B) 14/3 = n/100
C) 14/n = 3/100
D) n/14 = 3/100
Answer:
a)
Step-by-step explanation:
Which expression can be modeled using the number line?
Answer:
Expression that can be modeled using the number line is 7 over 10 divided by 1 over 10
Step-by-step explanation:
Arrow starts from 0 then it goes to 1/10 then to 2/10 then to 3/10 then to 4/10 then to 5/10 then to 6/10 then to 7/10.
Which implies 7/10 is divided into 7 equal parts of the equal length of 1/10 units.
Hope this helps you :)
An electric heater uses 7 1/2 units of electricity in 3 hours. How many units does it use in 5 hours?
Answer:
12.5 units or 12 1/2 units
Step-by-step explanation:
From the question, it uses 7.5 units in 3 hours.
In one hour it will use; 7.5/3 = 2.5 units
If 2.5 units is used in 1 hour
In 5 hours; 5 × 2.5 units will be used. This gives us 12.5 units or 12 1/2 units.
Find the lines slope and a point on the line of y-1=-3/2(x+3)
Answer:
y= −3 /2 x+ −7 /2
slope= -3/2
Step-by-step explanation:
y−1= −3 /2 (x+3)
y= −3 /2 x+ −7 /2
according to y=mx+b slope intercept form
-3/2 is the slope
A rectangular vegetable garden has a length that is 3 times its width. The perimeter of the garden is 90 feet. What is the width of the garden. Write an algebraic equation and solve
Answer:
30 thats easy bro divide 90 by 3
Step-by-step explanation:
Answer:
the answer will be 30 so divide 90×3
Evaluate the given expression when x=-4 and y=-1: 3x to the second power - xy + 2y to the second power
A. 54
B. 46
C. -32
D. -42
Answer:
The answer to the statement provided is 46.
If QS and TƯ
are parallel lines and
m
55°, what is m
Answer:
m is your slope. In parallel lines, your slopes are always the same and the y-intercept is always different. so ur slope is also 55.
hmu if u want me to tutor you! im a very good tutor and my fee is 50 cents per hour and every homework or test question is a dollar per page :)
Step-by-step explanation:
You put $500 in the bank, where it ears 1.5% simple interest every year. How long until your money will triple?
Answer:
133.33 years
Step-by-step explanation:
Given that:
Principal = $500
Interest rate (r) = 1.5% = 0.015
Triple amount of principal = $500 * 3 = $1500 = final amount (A)
Number of years (t) =?
Using the relation :
A = P(1 + rt)
1500 = 500(1 + 0.015t)
1500 / 500 = 1 + 0.015t
3 = 1 + 0.015t
3 - 1= 0.015t
2 = 0.015t
2 / 0.015 = 0.015t / 0.015
133.333 = t
133.33 years
Which statement is false?
O A. Every integer is also a rational number.
O B. Every rational number is also an integer.
O C. Every irrational number is also real.
O D. No rational number is irrational.
put 2/5 1/3 3/7 and 4/9 in order least to greatest
Answer:
1/3 < 2/5 < 3/7 < 4/9
Step-by-step explanation:
:)
Help ASAP plz
3. Solve by graphing. (y=mx + b)
y=-x+10
x+y=10
What is the solution and also solve using algebra
Answer: Im sorry im bad at mafs
Step-by-step explanation:
Four students were asked to write an expression that has terms that have a greatest common factor of ab. The expressions provided by the students are shown below.
Michelle
16 a + 3 b
Naomi
18 a b c minus 13 a b c
Olivia
20 a b minus 14 a b c
Peyton
15 a b c + 14 a b
Which student wrote the correct expression?
Michelle
Naomi
Olivia
Peyton
Answer:
Peyton in the correct option
Step-by-step explanation:
The correct expression is given by Peyton.
What is expression?An expression is a sentence with a minimum of two numbers or variables and at least one math operation.
Consider if m is any integer, then
gcd (a + m⋅ b, b) = gcd (a, b).
If m is a positive divisor, then
gcd (a/m, b/m) = gcd (a, b)/m.
So, if x and y are prime, then
gcd(x*y, b) = gcd(x, b) * gcd(y, b).
First, find the greatest common factor of the given terms.
The greatest common factor or GCF is the largest factor that all terms have in common.
Then, Factor out the greatest common factor from each term.
Learn more about this expression here:
https://brainly.com/question/14083225
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Which equation has a solution of X=
13?
O
X+ 3 = 10
O x-10=3
* = 26
Ox+12= 1
Answer:
x-10=3
x+10-10=3+10
x=13
Answer:
x - 10 = 3
Step-by-step explanation:
x - 10 = 3
Add 10 to both sides
x - 10 + 10 = 3 + 10
x = 13
Help please
Thank you!!