Help Plz
Use a net to find the surface area of the pyramid.
26 in. and 18 in.
Answers
Answer:
[tex]≈
1223.65 {in}^{2} [/tex]
Step-by-step explanation:
[tex]surface area of a pyramid\\ = lw + l( \sqrt{ \frac{w}{2} ) ^{2} + {h}^{2} + w } \sqrt{ (\frac{l}{2}) ^{2} + {h}^{2} } \\ =
20
·
20
+
20
· \sqrt{ {( \frac{20}{2} )}^{2} + {18}^{2} + 20} \times \sqrt{ { (\frac{20}{2}) }^{2} + {18}^{2} } \\ ≈
1223.65041
[/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
Related Questions
(a) n is an integer.
−2 < n ≤ 3
List the possible values of n.
Then solve;
Solve 3y − 4 > 17
Answers
The possible integer values of n are:
-1, 0, 1 , 2 , and 3.
-1 to 3 are all greater than -2.
3 is the maximum since 3 is the greatest number where n is equal to it or lesser than it.
Solving the inequality: 3y - 4 > 17
3y - 4 > 17
Add 4 to both sides to move it.
3y > 17 + 4
3y > 21
Divide both sides by 3 to get the value of y.
3y/3 > 21
y > 7
The sign does not change since we did not divide or multiply by a negative.
Therefore, y is greater than 7.
Answer:
[tex]n \in \mathbb{Z}[/tex]
Inequality given:
[tex]-2 < n \leq 3[/tex]
Interval notation: [tex](-2, 3][/tex]
[tex]\{n \in \mathbb{Z}| -2<n\leq 3 \}[/tex]
Writing down the values of [tex]n[/tex]
The set (N) for possible values of [tex]n[/tex] is:
[tex]N=\{-1, 0, 1, 2, 3\}[/tex]
Now, solving the inequality [tex]3y - 4 > 17[/tex]
[tex]3y - 4 > 17\\3y-4+4>17+4\\3y>21\\y>7[/tex]
Interval notation: [tex](7, \infty)[/tex]
[tex]\{n \in \mathbb{R}| y>7 \}[/tex]
Emina took out a 5/1 variable-rate mortgage for $120,000. The interest rate
for the first period was fixed at 5.25%, and the loan was amortized over 30
years. At the end of the initial loan period, the interest rate was 6.75%, plus a
1.5% margin. What will the unpaid balance on her mortgage be after her initial
period expires?
A. 102,164.09
B. 123,740.97
C. 113,739.09
D. 110,579.39
Answers
Answer: b
Step-by-step explanation:
Answer:
110,579.39
Step-by-step explanation:
Find the probability of spinning a 2 and rolling a 3.
A)
1
48
B)
1
6
D)
1
8
PLEASE HELP ME I NEED THIS RNNNN
Answers
Answer:
D
Step-by-step explanation:
5 1/2 by 4 3/4 by 1/4 scale it down by 1/10
Answers
Answer:
(11/20 by 19/40 by 1/40) OR (0.55 by 0.475 by 0.025)
Step-by-step explanation:
To scale down a set of measurements, simply multiply the original measurement by the factors you're scaling it by. For example, take the first measurement of 5 1/2. To scale this down, I turned the value into an improper fraction (11/2) to make the multiplication process easier. Then, I multiplied 11/2 by the factor of 1/10.
After that, I got 11/20, which is the new first measurement.
Need help with this pls!!
Show work pls
Answers
Answer:
He has 7 nickels, 14 dimes, and 21 quarters.
Step-by-step explanation:
Let d = number of dimes.
Let n = number of nickels.
Let q = number of quarters.
The value of a dime is $0.10, so d dimes are worth 0.1d
The value of a nickel is $0.05, so n nickles are worth 0.05n
The value of a quarter is $0.25, so q quarters are worth 0.25q
The value of all coins combined is the sum of the values above, and it equals $7.00
0.1d + 0.05n + 0.25q = 7
The number of dimes = 2 times the number of nickels, so
d = 2n
The number of quarters = 3 times the number of nickels, so
q = 3n
Now we substitute 2n for d and 3n for q in our equation above.
0.1d + 0.05n + 0.25q = 7
0.1(2n) + 0.05n + 0.25(3n) = 7
0.2n + 0.05n + 0.75n = 7
n = 7
He has 7 nickels.
d = 2n = 2(7) = 14
He has 14 dimes.
q = 3n = 3(7) = 21
He has 21 quarters.
Answer: He has 7 nickels, 14 dimes, and 21 quarters.
Answer: He has 7 nickels, 14 dimes, and 21 quarters.
Step-by-step explanation:Did this one before and got it right!
help pls i give u brainliest and 5 stars
Answers
Answer:
Surface area means all 6 sides
TOP side= 2 multiplied by 5
Bottom = 2 multiplied by 5
Right face = 2 multiplied by 8.1
Left face = 2 multiplied by 8.1
Back side = 5 multiplied by 8.1
front side = 5 multiplied by 8.1
10+10+16.2+16.2+40.5+40.5 = 133.4 cm ^2
Answer:
133.4 cm²
Step-by-step explanation:
The opposite faces of the cuboid are congruent, thus
front/ back = 2(8.1 × 5) = 2 × 40.5 = 81 cm²
top/ bottom = 2(5 × 2) = 2 × 10 = 20 cm²
sides = 2(8.1 × 2) = 2 × 16.2 =32.4 cm²
Thus
Surface area = 81 + 20 + 32.4 = 133.4 cm²
An artist can sell 20 copies of a painting at $100 each, but for each additional copy he makes, the value of each painting will go down by a dollar. if 22 copies are made, each will sell for $98. How many copies should he make to maximize his sales?
Answers
Answer:
60
Step-by-step explanation:
math
Answer:
60
Step-by-step explanation:
The function for the total profit is going to be [tex]f(x)=(20+x)(100-x)[/tex] because the profit is the number of paintings multiplied by the number of dollars per painting, and for each additional painting the cost goes down by one. Multiplying this out, you get the quadratic function [tex]f(x)=-x^{2}+80x+2000[/tex]. We are trying to find the maximum, or the vertex, and we do not care about the y-coordinate of the vertex, which is the dollar amount, we only care about the x coordinate. We can find the x coordinate by using [tex]-b/2a[/tex] , which gives -80/-2 or 40. Now, we must remember that we started with 20 paintings, so adding 20 to 40 we get 60, the final answer.
Katie and Danielle recorded their resting heart rates each morning for ten days. The double dot plot shows their heart rates in beats per minute.
Which of the following statements is not true?
F. Katie has more varied resting heart rate.
G. Danielle’s heart rates peak between 70 and 72 minutes. H. Katie’s heart rates peak at 65 minutes.
I. Katie has a greater average resting heart rate.
Answers
Answer:
I think it is G
Step-by-step explanation:
So ya see, it really does peak at the given times.
An object is moving in a straight line. It initially travelz at a speed on 9 meters per second, and speeds up at a constant rate of 2 meters per second each second. Under such conditions, the distance (d), in meters, that the object travels is given by the equation 2 d t t=+ 9, where t is in seconds. According to this equation, how long will it take the object to travel 22 meters?
Answers
Answer:13 meters per second
Step-by-step explanation:
A cannon ball is fired up into the air from a gun and lands 630 meters away at a time in 12 seconds
Answers
WILL MARK AS BRAINLIEST URGENT!!!!!!!!
Answers
Answer:
Q1: Because computers have become apart of our everyday lives, your using one right now to read this question!
Q2: CS/IS Research
Q3: 100%
Q4: Traditional Engineering
Q5: Mathematics
Q6: Engineering
Q7: 13%
A Biycle wheel has a diameter of 52cm.
What is the radius of a wheel?
The radius of each circle is 3.7m
What are the width and length of the rectangle?
The string stretched between a fixed point and pencil is 75.5cm long
If the pencil is used the draw a circle what will the diameter of the circle be?
A yellow circle is placed in the middle of a blue circle.
The radius of the blue circle is 14.9cm and the radius of the yellow circle is 7.9cm
What is the distance of XY?
Answers
Answer:
26cm
Step-by-step explanation:
because 2 radius equal 1 diameter
please help me!!!! ‼️
Answers
Answer:
$300.25
Step-by-step explanation:
Because $550.75 - $105 - $45.50 - $100 = $300.25
write f(2)=-3 as a coordinate point
Answers
Answer:
(2,-3)
Step-by-step explanation:
HELP ASAP‼️‼️ A walkway surrounds a rectangular garden. The width of the garden is 5 feet, and the length is 4 feet. The width s of the walkway around the garden is the same on every side. Write an expression that represents the total area of the garden and walkway.
___ s^2+_____s+______
Answers
Answer:
=4x^2 +28x+48
Step-by-step explanation:
Width of the garden is 8
There is walkway on each side of width so add x on each side
With the walkway is x+8+x = 2x+8
Length of the garden is 6
There is walkway on each side of length so add x on each side
With the walkway is x+6+x = 2x+6
The area of the garden is
A = lw
A = 8*6 = 48
The area of the walkway and garden is
A = lw
= (2x+8) (2x+6)
FOIL (first outer inner last)
= 4x^2 + 12x + 16x +48
=4x^2 +28x+48
Find the length of the side of a square whose area is 36 m2.
6 m
11 m
4 m
10 m
Answers
Answer:
6 m
Step-by-step explanation:
plz mark brainliest!
HELP ASAP ASAP!!!!!!!!!!!!!!!!! HELP NOWWWWWWWWWW!
Answers
Answer:
the answer is A
Step-by-step explanation:
an isosceles triangle is a triangle with two congruent sides and one not congruent to the others
Answer:
A
Step-by-step explanation:
the isosceles triangle has at least two equal sides and so does triangle W
In a rhombus whose side measures 20 and the smaller angle is 38°. Find the length of the larger diagonal, to the nearest tenth.
Answers
A rhombus diagonals form right angles. The diagonals also cut in half the angles
use cosine: cos38 = [tex]\frac{a}{20\\\\}[/tex]
a = 20cos38
a=15.8
It costs $25.25 for a ticket to the annual garlic festival. If Shelby wants to go with three of her friends, how
much money they need for the tickets?
1. $50.50
2. $75.75
3. $101.00
4.$127.50
Answers
Answer:
3: 101.00
Step-by-step explanation:
This is a trick question. It says that Shelby wants to go with THREE other friends and implies that she is going too. So that means there are 4 people going. Hence, do 25.25*4=101.
EXPLANATION;
There are 4 people so the cost multipled by 4
Using the given model. What value of X would make the equation true?
a. x = -8
b. x = 2
c. x = 3
d. x = 8
Answers
Answer:
a. x = -8
Step-by-step explanation:
2x + 3 = x - 5
take away x from both sides
X + 3 = -5
take away 3 from both sides
x = -8
Please answer correctly !!!!!! Will mark brainliest !!!!!!!!
Answers
Answer:
b= a/3 - 13/3
Step-by-step explanation:
Find the missing height, when you know the area. 4cm + 4cm + ? + ? = 28 cm
Answers
Answer:
4cm+4cm+10cm+10cm=28cm
Step-by-step explanation:
4+4=8
10+10=20
20+8=28
Which interval has the greatest average rate of change?
x=0 and x=5
x=1 and x=5
x=2 and x=4
x=2 and x=6
Answers
Answer:
x=2 and x=6
I just finished the assignment
Can someone please help me with this
Answers
Answer:
I don't have a calculator but the formula is at the bottom.
Step-by-step explanation:
Sohcahtoa
Tangent is opposite over adjacent
tan(68)= GI/2
GI= 2tan(68)
Please help
-20 ≥ z - 13
z=?
Answers
Answer:
The final answer is:
[tex]-7 \geq z[/tex]
Step-by-step explanation:
Solve the inequality:
[tex]-20 \geq z - 13[/tex]
-Add 13 both sides of the equation:
[tex]-20 +13 \geq z - 13 +13[/tex]
[tex]-7 \geq z[/tex]
So, the answer is [tex]-7 \geq z[/tex] .
From my last question, I was wondering if anyone could help me with part 2:
The zeros are x= __. (Use a comma to separate answers.)
Answers
Answer:
x = - 1, x = 3
Step-by-step explanation:
The zeros are the points on the x- axis where the graph crosses, that is
x = - 1, x = 3
Answer:
Step-by-step explanation:
zeros are where curve cuts x-axis
so zeros are -1,3
Connie has 84 feet of red ribbon 48 feet of blue ribbon and 72 feet of blue ribbon she wants to cut the ribbons into equal lengths that are as long as possible so that no ribbon is wasted
Answers
Answer:
Connie can cut the ribbon into 12 foot pieces.
Step-by-step explanation:
For these problems we should find the GCF, which is 12.
Answers are
A)0-5
B)5-10
C)10-15
D)15-20
Answers
Answer:
C
Step-by-step explanation:
The median number is 7 and the seventh runner is in interval 10-15
Answer:
Option C ....final answer.
Which of the following could be an interior angle measure of a regular polygon a.45 b.72 c.150 d.173
Answers
Answer: C
Step-by-step explanation:
A dog allergy test for people a 98% accuracy rate.Only 1% of the population has an allergy to dogs(actually it is much smaller than that!). Use a group of 100,000 people who’ve taken this test and the information provided to complete a table and answer the following question:
If you tested negative,what is the probability you do not have a dog allergy?
(Express your answer as decimals rounded to four decimal places.)
Answers
Answer:
It is 0.9990
As is 0.0010 as four decimal places. for those that do have which means the same as a negative probability that you don't but reaffirms the situation so inverse of 0.0010 is needed to be 0.9990. so when added together they can become 100% = 1 whole as a probability that both options equal together 1.
When questions ask it negatively using words like don't, haven't, didn't etc. etc.
This question asks for such probability which is similar to percentage in scale for those that do have an allergy.
If the question asked the probability you do have a non allergy the opposite effect happens and we inverse the answer to 99%
But because it asks negatively that you dont have we keep the establishing number of the actual allergy finding because its the same as if you don't.
1% of 100,000 = 1000
1000/100000 = 1/1000
1/1000 = 0.001
Step-by-step explanation:
Once you find 1/1000 is answer to turn numbers into decimals remember the rule 1 = 100
So if 1 = 100
and we want 1/100
1/100 will equal and simplify into 0.01
Where 1/1000 will equal and simplify into 0.001 as the number 100 is extended another digit so would the decimal.