Answer:
408
Step-by-step explanation:
Surface area formula is A=2(wl+hl+hw)
Substituting these values into the formula you would get
2·(3·8+4·8+4·3)=136
136 accounts for one rectangular prism.
Since you have 3 multiply 136 by 3 which would leave you with 408
Answer:
280 in²
Step-by-step explanation:
The opposite faces are congruent , then surface area (SA ) is
SA = top/ base + front/ back + 2 sides
note for the front/ back and 2 sides we have 3 + 3 + 3 = 9 in
SA = 2(8 × 4) + 2(8 × 9) + 2(4 × 9)
= 2 × 32 + 2 × 72 + 2 × 36
= 64 + 144 + 72
= 280 in²
pls answer this!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! asap
Refer to the attached diagram for further a visual explanation. As per the given information, segments (AB) and (AD) are congruent. Moreover, segments (AC) and (AE) are also congreunt. One is also given that angles (<BAD) and (<EAC) are congruent. However, in order to prove the triangles (ABC) and (ADE) are congruent (using side-angle-side) congruence theorem, one needs to show that angles (<BAC) and (<DAE) are congruent. An easy way to do so is to write out angles (<BAC) and (<DAE) as the sum of two smaller angles:
<BAC = <BAD + <DAC
<DAE = <DAC + <EAC
Both angles share angle (DAC) in common, since angles (<EAC) and (BAD) are congruent, angles (<BAC) and (<DAE) must also be congruent.
Therefore triangles (ABC) and (ADE) are congruent by side-angle-side, thus sides (BC) and (DE) must also be congruent.
In summary:
AB = AD Given
AC = AE Given
<BAD = <EAC Given
<DAC = <DAC Reflexive
<BAC = <BAD + <DAC Parts-Whole Postulate
<DAE = <EAC + < DAC Parts-Whole Postulate
<BAC = <DAE Transitivity
ABC = ADE Side-Angle-Side
BC = DE Corresponding parts of congruent triangles are congruent
11. Write y = 2x² +12x+14 in vertex form.
Please show work if possible so I know how to do it
Answer:
y = 2(x + 3)² - 4
Step-by-step explanation:
y = 2x² + 1 2x + 14
Move the constant (14) to the left side
y - 14 = 2x² + 12x
Now factor out 'a' , the coefficient of x² term
y - 14= 2(x² + 6x)
Divide the coefficient of 'x' by 2 ⇒ 6/2 = 3
Find the square of '3' and add it to x² + 6x ⇒ x² + 6x + 9
Multiply the square of 3 and add it to y - 14; 9*2 = 18
y- 14 = 2(x² + 6x + 9)
y - 14 + 18 = 2(x² + 6x + 9)
y + 4 = 2(x² + 6x +9)
y + 4 = 2(x + 3)²
y = 2(x + 3)² - 4
Vertex ( -3 , -4)
Hannah has a square plat of grass in her backyard. Each side of the plot has a length of 13 feet. On one side, semicircular fountain with a radius of feet cuts into the plot of grass. She wants to put a brick border around the edge of the grass, so that it also separate the grass from the fountain. How many feet of brick will she need? Round to the nearest whole number.
A. 50
B.48
C.58
D.55
Here we just want to find the perimeter of the image below.
We will find that the correct option is D.
The perimeter will be equal to:
The perimeter of a square of side length of 13 ft, minus 5 ft (the diameter of the circle), plus half the perimeter of a circle of diameter 5ft.
Remember that for a square of side length L, the perimeter is:
P = 4×L
For a circle of diameter D, the perimeter is:
P = 3.14*D
Then the perimeter of the square of side length of 13ft is:
P = 4×13ft = 52ft
The perimeter of the half-circle of diameter 5ft will be:
P' = 3.14×5ft/2 = 7.85ft
Then, the perimeter of the whole figure is:
perimeter = 52ft - 5ft + 7.85ft = 54.85ft
Rounding to the nearest whole number, we get:
54.85ft ≈ 55ft
The correct option is D.
If you want to learn more, you can read:
https://brainly.com/question/24367392
a+b in terms of a and evaluated these expressions when a = 3
Answer:
a+b=a
or, 3+b=3 (a=3)
or, b= 3-3
or, b=0
Send help, soy muy muy mala con fracciones mixtas
Answer:
pleas mark me has branlist
A teacher asked his students to vote for an animal to be their class pet. Five-eighteenths of the students voted for a rabbit, One-sixth voted for a snake, and Five-ninths voted for a hamster. Which statement is true?
Answer:
Since you didn't list the statements, I'll just list some true statements.
-------------------------------------
There are 17 students in this class.
Majority of students voted for a hamster.
Snake was the least voted for.
helppppp meeeeeeee pleeaaaaasseee
liza deposits money at 4.5% intrest with twice as much deposited at 5%. find the amount deposited at each rate if total annual interest is 2320
Answer:
57
Step-by-step explanation:
4.5 × 2 = 8.10
8.10 x 5 = 40.50
2320 ÷ 40.50
Solve for x please will mark brainliest
Answer:
y = 9
Step-by-step explanation:
if you want to find the value of y then
4y + 6y = 90 (it's right angle triangle)
10 y = 90
y = 90/10
y = 9
Answer:
y = 9
Step-by-step explanation:
6y + 4y = 90
10y = 90
y = 9
Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels at a rate of 45 miles per hour. The westbound train travels at a rate of 55 miles per hour. How long will it take for the two trains to be 280 miles apart
Answer: 2.8 hours
Step-by-step explanation:
Train A: time= t, v=45mi/hr, d= d
Train B: time t, v= 55mi/hr, d=280-d
Distance = v times t (d=vt)
t = d/v (time for both trains is the same, so t=t)
Train A: t=d/45
Train B: t=(280-d)/55
d/45 = (280-d)/55 (cross multiplication)
55d = 15400-45d
55d+45d = 15400
100d = 15400
d = 154 miles (280miles - 154miles = 126 miles)
Train A travel 154 mi and train B travel 126 mi
Train A travel 154 miles in 2.8 hrs.
Train B travel 126 miles in 2.8 hrs.
154 miles at a rate of 55mi/h = 2.8 hours and
126 miles at a rate of 45mi/h = 2.8 hr.
8. If angle CBD = angle DBE find m angle A
Answer:
m∠A = 65°
Step-by-step explanation:
Because ∠CBD is congruent to ∠DBE, we can set the degree values equal to each other.
So
CBD has x + 10, DBE has 60. So:
x + 10 = 60
Subtract 10 from both sides.
x = 50
Check:
50 + 10 = 60
60 = 60
m∠A = (x + 5)° = (60 + 5)° = 65°
The measure of m<A if angle CBD = angle DBE is 55°
The point where two lines meet is known as an angle.
We are given the following from the diagram:
m<CBD = x +10
m<DBE = 60degrees
Since angle CBD = angle DBE, then:
x + 10 = 60
x = 60 - 10
x = 50degrees
Get the angle A.
From the diagram, angle A = (x+5)°
m<A = 50 + 5
m<A = 55°
Hence the measure of m<A is 55°
Learn more here: https://brainly.com/question/20113464
What negative numbers are not integers?
Answer:
Step-by-step explanation:
The sum of 1/4 and 1/8 times the difference between 2/3 and 5/6.
What is the numerical expression for the phrase?
Answer: (1/4 + 1/8) x (2/3-5/6)
Step-by-step explanation:
The sum of 1/4 and 1/8 times the difference between 2/3 and 5/6
Evaluate the expression when y = -2
- 8y2
I believe this is the expression:
[tex] \displaystyle \large \boxed{ - 8 {y}^{2} }[/tex]
Since we want to evaluate it when y = -2, simply substitute y = -2 in the expression.
[tex] \displaystyle \large{ - 8 {( - 2)}^{2} }[/tex]
Any negative number squared will result in positive, refer below:
[tex] \displaystyle \large{ {( - a)}^{2} = {a}^{2} } \\ \displaystyle \large{ {( - 2)}^{2} = {2}^{2} } \longrightarrow \boxed{4} \\ [/tex]
Hence,
[tex] \displaystyle \large{ - 8(4) = - 8 \times 4} \\ \displaystyle \large \boxed{ -32}[/tex]
Answer:
-32
Step-by-step explanation:
Replace the variable y with -2 in the expression giving -8(-2)^2
Then, square -2 giving us (positive) 4
Lastly, multiply -8 with 4 and get -32 as our answer
(Hopefully this helped you! Feel free to ask again if you need more help. Tell me if the solution is unclear to you)
Hi, please help me with this question.
what is 45+46+47+ ... +53+54?
Please don't just take points (this is a repost since someone did that)
Answer:
52 i think
Step-by-step explanation:
The question doesn't really say what to do, i say 52 because of the pattern
The required sum of the arithmetic progression is 441.
Arithmetic progression is the series of numbers that have common differences between adjacent values
What is geometric progression?Geometric progression is a sequence of series whose ratio with adjacent values remains the same.
Here,
45 + 46 + 47 . . . . . . 54
About sequence is an arithmetic sequence with,
First term a = 45
common difference d = 1
last term l = 54
Number of terms = 45 - 54 = 9
The required sum of the arithmetic progression can be given as,
s = n / 2 * ( 2a + (n - 1) d )
s = 9 / 2 * (2 * 45 + 8 * 1)
s = 9 / 2 * (98)
s = 9 *49
s = 441
Thus, the required sum of the arithmetic progression is 441.
Learn more about arithmetic progression here: https://brainly.com/question/20334860
#SPJ2
please help
also dont pay attention to the one I have marked I clicked it by accident
Answer:
the answer is c because if you moved it 180 degrees and reflecting over the x-axis then it would move to the same box it was in from the beginning
Answer:
b
Step-by-step explanation:
What is the coordinate of the midpoint of GO¯¯¯¯¯¯¯¯?
Step-by-step explanation:
I dunno what your question ask,and I think maybe you want the formula?
0.11616.......
How do I write 0.116 w/ repeating 16 as a simplified fraction,...
Please show work (or provide explanation)
pls ans this q/a pls fast...
no spamming step by step ans
pls dont ans who answer already
Answer:
figure 1, 2 respectively
62.5 Answer
6/12 divided by 1/4
Answer:
the answer is 2
Step-by-step explanation:
hope it helps
Answer:
2
Step-by-step explanation:
according to my calculator
4z - 15 = 4z + 11
How do you solve this?
Answer:
no solutions
Step-by-step explanation:
4z - 15 = 4z+11
Subtract 4z from each side
4z-15-4z = 4z+11-4z
-15 = 11
This is not a true statement so there are no solutions
Answer:
No solutions.
Step-by-step explanation:
4z-15=4z+11 Subtract 4z from both sides.
-4z -4z
-15=11 This statement is not true; therefore, there are no solutions.
Hope this helps you out! Have a wonderful day (。・∀・)ノ゙
Elsa needs to drive a total of 205.6 miles. So far she has driven 67 miles. How many miles muse she drive?
Answer:
138.6 miles
Step-by-step explanation:
205.6 - 67 = 138.6
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
(10-1)(10-2)(10-3)(10-10)
Answer:
0
Step-by-step explanation:
(10-1=9)(10-2=8)(10-3=7)(10-10=0)
9*8*7*0=0
8.76 11.9 11.73 15.9 in order please help me
Answer:
Least to greatest: 8.76,11.73,11.9,15.9
Greatest to least: 15.9,11.9,11.73,8.76
Step-by-step explanation:
plz give me brainliest
Answer:
Step-by-step explanation:
Use the number on the left of the decimal first. Smallest to largest gives
8
11
11
15
8 and 15 have their positions fixed. Where they are now, that is where they will stay.
So let's mark them
8.76
11
11
15,8
Now all we need do is figure out the 11s.
11.90
11.73
I added the 0 so you could think about money. You see a great looking scarf. Which would you rather pay: 11.73 or 11.90. Never mind that you really like it and the difference isn't worth squabbling about. Which is better to pay? You should answer 11.73. It's smaller than 11.90. So what's the answer
8.76
11.73
11.90
15.9
Put the following equation of a line into slope-intercept form, simplifying all
fractions.
4x + 2y = -18
Answer:
Submit Answer
attestato
PLSSS HELP ASAP
A city has a population of 240000 people. Suppose that each year the population grows by 5%. What will the population be after 8 years?
Answer:
354,589 people.
Step-by-step explanation:
Each year the population is 105% times the previous year.
105% = 1.05.
so in 8 years population will be:
240000*(1.05)^8
= 354,589.
This is midpoint please help.
Step-by-step explanation:
[tex]thank \: you[/tex]
Answer:
(1, 13)
Step-by-step explanation:
it is above in the photo.
Need help ASAP if u help I will give u more points
Answer:
1/5 or 20%Step-by-step explanation:
Number of red = 12
Total number = 12 + 14 + 34 = 60
Relative frequency if red:
12/60 = 1/5 or 20%Total tokens
12+14+3460P(red)
12/601/520%please help meh its midpoint
Step-by-step explanation:
[tex]mid \: point \: of \: x = \frac{x1 + x2}{2} \\ x = \frac{8 + - 12}{2} \\ = \frac{ - 4}{2} = - 2 \\ mid \: pont \: of \: y = \frac{y1 + y2}{2} \\ y = \frac{ - 5 + - 1}{2} \\ = \frac{ - 6}{2} \\ = - 3 \\ the \: coordinates =( xy) = ( - 2 \: - 3) \\ thank \: you[/tex]
Can someone plz help me?
Answer:
Its D
Step-by-step explanation:
i just guessed! but i think its D!<3