Answer:
the area of triangle formula is A = B*H / 2
so it means 16 square = (x+4) x /2
so x²+4x -32=0, D' = 2²- (-32)= 36, sqrt of D' = 6
so x = -2 -6 = -8 or x= -2 +6 = 4
x must be positive so x = 4
Step-by-step explanation:
Someone want to help with number 1
Answer:
95 in²
Step-by-step explanation:
The total area of a pyramid is the sum of the areas of the triangular faces and the area of the base.
__
face areaHere, each triangular face has a base of 5 in, and a slant height of 7 in. Its area will be given by the area formula for a triangle:
A = 1/2bh
A = 1/2(5 in)(7 in) = 35/2 in² . . . . area of one of four congruent faces
__
base areaThe area of the base is that of a square with 5-inch sides. It is given by the formula ...
A = s²
A = (5 in)² = 25 in²
__
total areaThen the total surface area is .
area of base + 4 × triangle area
= 25 in² + 4(35/2 in²) = 95 in² . . . . . surface area of the pyramid
I need help finding the value of this figurehead
Answer:
See below, please
Step-by-step explanation:
Volume
[tex] = (x + 12) \times (x + 3) \times 2x[/tex]
[tex] = ( {x}^{2} + 15x + 36) \times 2x[/tex]
[tex] = 2 {x}^{3} + 30 {x}^{2} + 72x[/tex]
Find the areas of these polygons
The following three shapes are based only on squares, semicircles, and quarter circles. Find the perimeter and the area of each shaded part.
Answer:
Step-by-step explanation:
The total shaded area = area of the square - area of a circle
= 9^2 - π * 4.5^2
= 17.3827
The 2 shaded parts both have area 8.69 unit^2 ( to nearest hundred)
Perimeter:
The perimeter of the top shaded part
= AB + 1/2 circmference of the circle
= 9 + 1/2 * 2 π r
= 9 + 14.137
= 23.14 units ( to nearest hundredth)
The bottom part has the same perimeter.
Answer:
area: 17.38 cm²perimeter: 46.27 cmStep-by-step explanation:
You want the perimeter and area of the part of a 9 cm square remaining after a semicircle is removed from two opposite sides.
AreaThe shaded area is the area of the 9 cm square less the area of a 9 cm circle. That area is ...
A = s² - π(s/2)² = s²(1 -π/4) . . . . . where s is the side length of the square
A = (9 cm)²(1 -π/4) ≈ 17.38 cm²
The area is about 17.38 cm².
PerimeterThe perimeter is the circumference of the circle plus two sides of the square.
P = C +2s
P = πs +2s = s(π+2)
P = (9 cm)(π+2) ≈ 46.27 cm
The perimeter is about 46.27 cm.
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A doctor wants to estimate the difference in mean healing time of Achilles tendon injuries among those who have major and minor strains. The doctor selects a random sample of 5 patients who had major strains and 8 patients who had minor strains and recorded the healing time, in weeks. Here are the data: Major: 8, 9.5, 10, 12, 11.5 Minor: 6, 7, 5.5, 8, 9, 6, 7, 6 Assume the length of healing time for both major and minor Achilles injuries is nearly Normal. Using a graphing calculator to construct a 95% confidence interval for μMajor – μMinor = the true difference in the mean healing time for these two injuries. Enter the values to 3 decimal places. (, )
Answer: 1.406, 5.369
Step-by-step explanation:
edg22
When you use a graphing calculator to construct a 95% confidence interval for μMajor – μMinor = the true difference in the mean healing time will be 1.406, 5.369.
What is a Graphing Calculator?A graphing calculator is known to be a kind of handheld computing device that is used for plotting of graphs, handling simultaneous equations, etc.
Note that by inputting those numbers such as Major: 8, 9.5, 10, 12, 11.5 Minor: 6, 7, 5.5, 8, 9, 6, 7, 6 , following the right equation on the graphing calculator, one can be able to construct a 95% confidence interval for μMajor – μMinor = and the the true difference in the mean healing time will be found to be 1.406, 5.369.
Learn more about calculator from
https://brainly.com/question/27370687
#SPJ2
8 piglets are evenly sharing 5 liters of milk.
How many liters of milk should each piglet get?
Choose 1 answer:
A. 1 3/8 liters of milk
B. 13/8 liters of milk
C. 5/8 liters of milk
D. 8/5 liters of milk
Answer:
C.
Step-by-step explanation:
5 liters divided by 8.
5 divided by 8 = 5/8
Answer: 5/8 liter
it math questions: true or false!
Answer:
1 true 2true 3false 4true 5 true
Answer:
1: True 2: False 3: True 4: True 5: False
Puzzle in the picture. the answer should be 23, explain how you did it
Step-by-step explanation:
try this option, all the details are in the attachment.
Note, the nine numbers. used in the solution are: 1, 2, 3, 4, 5, 6, 7, 8 and 9.
The algebraic expression of the SUM is n²+2n. What is the common difference and first term
Answer:
see explanation
Step-by-step explanation:
substitute n = 1, 2 into the sum rule
1² + 2(1) = 1 + 2 = 3 , then
a₁ = 3
2² + 2(2) = 4 + 4 = 8 , then
a₁ + a₂ = 8
3 + a₂ = 8 ( subtract 3 from both sides )
a₂ = 5
then
common difference d = a₂ - a₁ = 5 - 3 = 2
First term is 3 and common difference = 2
Ms Alvarez’s math class surveyed 10 students in 6th grade and 10 students in 7th grade
Answer: Would the total be 20 Students? What exactly is the question
Step-by-step explanation:
10 + 10 = 20
Solve for x
x = ?
Please hurry! I will give brainliest to correct answer!
Answer:
23.3786
Step-by-step explanation:
tan33° = x÷36
x = tan33°×36
x = 23.3786
Answer:
23.36
Step-by-step explanation:
We have three things on the diagram :
Angle = 33°Length of adjacent side = 36Length of opposing side = xWhen the opposing side length and adjacent side length is given, always use the tan ratio.
tan = opposite / adjacentFirst, find the numerical value of tan(33°)
tan(33°) = 0.6494 = 0.649Solving :
tan(33°) = x/36 = 0.649⇒ x = 0.649 x 36⇒ x = 23.364 = 23.36What value of x makes this equation true?
5x+3=2x-3
Answer:
-2
Step-by-step explanation:
[tex]5x+3 = 2x -3 \\\\\implies 5x -2x = -3 -3\\\\\implies 3x = -6\\\\\implies x = -\dfrac 63 =-2[/tex]
Let's solve this equation.
Step 1
Move the numbers to the right:-
5x=2x-3-3
Step 2
Move the x's to the left
5x-2x=-3-3
Notice I use the opposite operation :)
Step 3
Combine like terms
3x=-6x
Step 4
Divide both sides by 3
x=-2
That's the value of x that makes the equation true.
note:-Hope everything is clear; if you need any clarification/explanation, kindly let me know, and I'll comment and/or edit my answer :)
y=x+2
y=-2x-1
solve by addition method
Answer:
x = -1, y = 1
Step-by-step explanation:
A) Find the area of each triangle.
1)
2 yd
7 yd
Answer:
Area= 7
Explanation: area of triangle is A=bh/2
b=2 h=7
7 x 2 = 14/2 = 7
what is 2x2x32 to the 2 power
Answer:
16384
Step-by-step explanation:
Here is how you do it : (2*2*32)^(2)
Please Help, My answer was incorrect
Answer:
4x + 3 = 7x -6
x = 3
Q = 3
not sure...
For 100 points!!!
Three times a number, plus nine, equals negative two times the same number, plus forty-four. The number is?
Answer:
4A - 8 = 3A + 4
Step-by-step explanation:
Answer:
31/5
Step-by-step explanation:
3x+9=-2x+40
when you solve the equation, you get 31/5!
Please mark as brainliest if you can. Hope this helps!
I'm struggling with this question, if someone could help me that'd be great! :)
Answer:
t = 3 seconds
Step-by-step explanation:
You can think of this as a quadratic and find the zeros. i will use x and y to make it easier.
y = -16x^2 + 48x
y = (x)(-16x+48)
y = (-16)(x)(x-3)
This means your zeros are at x = 0 and x-3 = 0, so 0 and 3.
0 is when the ball leaves the ground, so 3 is when it returns.
In 10 and 11, find the area in square units of each polygon.
Answer:
10: 12 units^2 11: 33 units^2
Step-by-step explanation:
10:
Divide into square and 2 triangles (for simplicity)
square=9
one triangle=3/2
both triangles combined=3
9+3=12
11:
divide into 2 triangles
top triangle: height= 4, base=6
bottom triangle: height= 7, base=6
top=12
bottom=21
Add, 33.
Suppose you invest $550 at an annual interest rate of 3% compounded continuously. How much will you have in the account after six years? Round your answer to the nearest cent.
[tex]~~~~~~ \textit{Continuously Compounding Interest Earned Amount} \\\\ A=Pe^{rt}\qquad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill & \$550\\ r=rate\to 3\%\to \frac{3}{100}\dotfill &0.03\\ t=years\dotfill &6 \end{cases} \\\\\\ A=550e^{0.03\cdot 6}\implies A=550e^{0.18}\implies A\approx 658.47[/tex]
Standing in your tree house, 50 feet off the ground, you look down at a 60° angle and notice a Frisbee. Approximately how many feet from the base of the tree is the Frisbee? Draw a picture to help you!
Answer:
About 29 feet.
Step-by-step explanation:
tan 60 = 50 / h
h = 50/ tan 60
= 28.87 ft
i need to find volume of this triangular pyramid
Answer:
135 Cubic Inches
Step-by-step explanation:
Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Have a great day!
PLSSS HELP IF YOU TURLY KNOW THISS
Answer:
A
Step-by-step explanation:
[tex]\frac{4}{5} + \frac{2}{5} = \frac{6}{5} \\Simple make it improper, resulting in answer A[/tex]
Hope this helps!
Factor out the greatest common factor from the following polynomial.
Answer:
i pretty sure its 6
8x
Step-by-step explanation:
i did the research
Here
Common part is 8 and x⁶
Now
Factor out
8x⁶(x²-3x+8)GCF=8x⁶
The original price is $125. The sale price is $81.25. How much was the discount as a percent?
Answer: 35%
Step-by-step explanation:
Start by subtracting the original price by the sale price.
125-81.25=43.75
Now divide that amount by the original price.
[tex]\frac{43.75}{125} =0.35[/tex]
Multiply that value by 100 for the answer
0.35×100=35
35%
Answer:
Discount Percent = 35.00 %
Step-by-step explanation:
125-81.25=43.75 actual discount
43.75/125 = 0.35 actual discount / original
0.35 as percentage = 35%
bagles come in bags of eight. how many bagles are in 2 3/4 bags?
What is the area of a circle with a diameter of 4x? Please I need help rn
Answer:
12.57x² units²
Explanation:
area of circle: πr² ["r" denotes radius]
diameter: 2r
Given,
diameter: 4x
radius: 4x/2 = 2x
Area of circle:
πr²
π(2x)²
π(4x²)
4πx²
12.57x²
Answer:
4πx² square units
Step-by-step explanation:
Area of a circle
[ A = πr² ]The formula uses the radius of the circle, but we have the diameter. Remember the relation :
Diameter = 2 x Radius4x = 2 x RadiusRadius = 4x/2 = 2xNow, we can solve.
⇒ A = πr²⇒ A = π(2x)²⇒ A = 4πx² square unitsGiven that secA = 13/5, what is the value of cosA
Answer:
cos A = 5/13
Step-by-step explanation:
sec A = 1/cos A
sec A = 1/cos A 13/5 = 1/cos A
cos A = 5/13
which function does the graph represent
a: f(x)=-0.5(x+4)^2-5
b: f(x)=0.5(x+4)^2-5
c: f(x)=0.5(x-4)^2-5
d:f(x)=-0.5(x-4)^2-5
Answer:
C: f(x) = 0.5(x-4)^2-5
Step-by-step explanation:
I graphed each function on Desmos, and matched it up with option C:
Answer:
the answer is C
Step-by-step explanation:
c: f(x)=0.5(x-4)^2-5
what should be subtract from -1/7 to get 11/14? . please answer the question........................................ ..........
[tex]-\dfrac 17 - x = \dfrac{11}{14}\\\\\implies x = -\dfrac 17 - \dfrac{11}{14}\\\\\implies x= -\dfrac{13}{14}\\\\\text{Hence,}~x = -\dfrac{13}{14}~ \text{should be subtracted.}[/tex]
