Pls someone help I need help with 2 I need answer and explanation pls
Answer:
2. B, 18 = 11 + 7
If you plug in the 7 in the y it would make sense
18 = 11 + y
Let's plug in the 7
18 = 11 + 7
and 11 + 7 = 18, so it makes sense! Therefore B is your answer for question number 2.
Answer:
B. 18 = 11 + y
Step-by-step explanation:
since y = 7
substitute it into the equation which becomes
18 = 11 + 7
which makes this statement true.
11 + 7 = 18
Angelica used four congruent equilateral triangles. Each side of the triangles was 14 inches. The height of each triangle was 12.1 inches. Which figure did she construct? What is the surface area of her figure? 7 Check your guesses from Exercise 3. Were you correct?
Answer:
in simplified version it would be x ≤-4
Step-by-step explanation:
multiply each term in x ≤-4 by -1
Angelica constructs a regular tetrahedron
The surface area of the regular tetrahedron is 339.08 [tex]in^{2}[/tex]
What is equilateral triangle?"It is a triangle that has all its sides equal in length and all angles are 60° in measure."
What are congruent triangles?"Two or more triangles are congruent if all three corresponding sides are equal and all the three corresponding angles are equal in measure."
What is a regular tetrahedron?"It is a triangular pyramid having congruent equilateral triangles for each of its faces."
Formula of area of regular tetrahedron:[tex]A=\sqrt{3}\times a^{2}[/tex], where 'a' is the edge length of tetrahedron
For given question,
Angelica used four congruent equilateral triangles.
She constructs a regular tetrahedron using four congruent equilateral triangles.
The length of each edge of tetrahedron = side length of equilateral triangle
So, each edge of tetrahedron measures 14 inches.
Using the formula of area of the regular tetrahedron,
[tex]A=\sqrt{3}\times a^{2} \\\\A=\sqrt{3}\times (14)^{2}\\\\A=1.73\times 196\\\\A=339.08~~in^2[/tex]
Therefore, the surface area of the regular tetrahedron is 339.08 [tex]in^{2}[/tex]
Learn more about regular tetrahedron here:
https://brainly.com/question/17132878
#SPJ2
The sum of the ages of Mark, Tim and Jane is 39. In 5 years, the ratio of Mark's
5 age to
Tim's age to Jane's age will be 10:9:8. How old is Mark now?
A.
В.
C.
D.
15
14
13
20
Answer:
A. 15
Step-by-step explanation:
10 : 9 : 8
Mark: 10x
Tim: 9x
Jane: 8x
(10x - 5) + (9x - 5) + (8x - 5) = 39
10x - 5 + 9x - 5 + 8x - 5 = 39
27x - 5 - 5 - 5 = 39
27x - 15 = 39
27x - 15 + 15 = 39 + 15
27x = 54
27x ÷ 27 = 54 ÷ 27
x = 2
Mark: 10x - 5
10x - 5
10(2) - 5
20 - 5
15
What is the area of the figure? (PLSSS HELP QUICKLY!!)
Answer:
416 cm^2
Step-by-step explanation:
The formula for the area of a trapezoid is:
[tex]\frac{(b1+b2)*h}{2}[/tex]
where b1 and b2 are the bases and h is the height. We can plug what we have into the formula:
[tex]\frac{(14 + 38)*16}{2}[/tex]
[tex]\frac{(52)*16}{2}[/tex]
[tex]52*8[/tex]
416 cm^2
Which answer choice represents the difference of 20 and 3 times a number?
A. 3j + 20
B. 20(3j)
C. 20 – 3j
D. (20 · 3)j
Answer:
C
Step-by-step explanation:
The word “difference” tells us that this is a subtraction problem
the words “three times a number” tells us that the variable will be multiplied by three
therefore it is C, 20-3j
If f(x) 2(3x) 1, what is the value of f(2)?
How does this make you feel?
Answer:
sad to be honest
Step-by-step explanation:
Answer:
yo lemme stand in that dark door way
there
Step-by-step explanation:
Using the unit circle, determine the value of sin(-240°).
A) -1/2
B) √3/2
C) 1/2
D) -√3/2
Answer:
B. √3/2.
Step-by-step explanation:
If we follow the circle from (1,0) clockwise through 240 degrees we end up at 120 degrees.
sin(120)
= √3/2
If x = 9 when y = 36 and x is directly
proportional to y, what is x when y= 6?
Answer:
[tex]x = 1.5[/tex]
[tex]Explaination :\\\frac{36}{9} = 4\\\frac{6}{4} =1.5\\Answer = 1.5[/tex]
Answer:
x = 1.5
Step-by-step explanation:
[tex]\frac{9}{36} :\frac{x}{6}[/tex]
Cross multiply.
36 · x = 9 · 6
Simplify.
36x = 54
Divide each side by 36.
36x ÷ 36 = 54 ÷ 36
Simplify.
x = 1.5
PLEASE HELP ME !ASAP!!
Q1)What is the sum of the finite arithmetic series −10, −8, −6, −4, ...24?
show work !!
Q2)You are trying to save $1500. You begin with $5 and save $3 more than the previous amount each week for 30 weeks. Will you meet your goal? Explain. Show work
Solution :
First term, a₀ = -10 .
Common difference of A.P. , d = -8 - (-10) = 2 .
Last term, aₙ = 24 .
We know, last term is given by :
aₙ = a₀ + (n-1)d
24 = -10 + (n-1)×2
2n - 2 = 34
n = 18
Now, sum of series is given by :
[tex]S_n = \dfrac{n}{2} \times ( 2a+(n-1)d)\\\\S_n = \dfrac{18}{2} \times ( 2\times -10 + ( 18 -1) \times 2)\\\\S_n = 126[/tex]
Hence, this is the required solution.
The width of a rectangle is its length. The perimeter of the rectangle is 420 ft.
What is the length, in feet, of the rectangle?
Width=length
Let's assign a variable for the width, and call it x.
Since the width is equal to it's length, we can also call the length x.
The perimeter formula for a rectangle is 2(l+w).
Hope this helps!
Answer:
[tex]105ft[/tex]
Step-by-step explanation:
Since it's saying that the width of a rectangle is its length, that means all the sides of the rectangle are equal.
Since a rectangle has only 4 sides, we can divide the perimeter of the rectangle (420 ft) by 4 (sides)
Note: perimeter is the sum of all sides!
420 ÷ 4 = 105
Hope this helps!
Solve for the variable then find the missing angle.
I NEED THIS BY TODAY!!
Step-by-step explanation:
[tex](1. \: x = - \frac{y}{3} [/tex]
[tex](2. \: x = \frac{22 + 3y}{2} [/tex]
I think this is correct and what you wanted
HELPP i'll give brainliest for the CORRECT answer
Answer:
a = 105 in²
Step-by-step explanation:
Front and back, triangles
a = 2 * (1/2)(5 * 6)
a = 30
Sides, squares
a = 3 * (5 * 5)
a = 75
Total
a = 30 + 75
a = 105 in²
fractions are equal to 12 /18 is
Answer:
2/3
Step-by-step explanation:
Answer:
2/3 = 4/6 = 6/9 = 8/12
= 10/15 = 12/18 = 14/21 = 16/24
= 18/27 = 20/30 = 22/33 = 24/36
= 26/39 = 28/42 = 30/45 = 32/48
= 34/51 = 36/54 = 38/57 = 40/60
= 42/63 = 44/66 = 46/69 = 48/72
= 50/75 = 52/78 = 54/81 = 56/84
= 58/87 = 60/90 = 62/93 = 64/96
= 66/99 = 68/102 = 70/105 = 72/108
= 74/111 = 76/114 = 78/117 = 80/120
= 82/123 = 84/126 = 86/129 = 88/132
= 90/135 = 92/138 = 94/141 = 96/144
= 98/147 = 100/150 = 102/153 = 104/156
= 106/159 = 108/162 = 110/165 = 112/168
= 114/171 = 116/174 = 118/177 = 120/180
= 122/183 = 124/186 = 126/189 = 128/192
= 130/195 = 132/198 = 134/201 = 136/204
= 138/207 = 140/210 = 142/213 = 144/216
= 146/219 = 148/222 = 150/225 = 152/228
= 154/231 = 156/234 = 158/237 = 160/240
= 162/243 = 164/246 = 166/249 = 168/252
= 170/255 = 172/258 = 174/261 = 176/264
= 178/267 = 180/270 = 182/273 = 184/276
= 186/279 = 188/282 = 190/285 = 192/288
= 194/291 = 196/294 = 198/297 = 200/300
Caity is 50 inches tall. Caity's brother Michael is 5 inches taller than she is. What is Michael's height in feet and inches?
Answer:
55 inches = 4 feet 7 inches
Step-by-step explanation:
Because Michael is 5 inches taller so 50+5=55, then divided by 12 = 4 remainder 7. So that means Michael is 55 inches tall, or 4 feet and 7 inches
the diagram below shows the path a bird flies from the top of a 9.5 foot tall sunflower to a point on the ground 5 feet from the base of the sunflower. to the nearest tenth of a degree what is the measure of angle x?
Answer:
Step-by-step explanation:
Find the measure of the arc TDB in the circle P shown below:
[tex]\huge{ \mathfrak{ \underline{ Answer \: \: ✓ }}}[/tex]
The Angle formed by an arc on the centre of the circle is double the angle made by the same arc on the circumference of the circle.
So,
[tex] \boxed{ \mathrm{ \angle TDB = \dfrac{1}{2} \angle TPB }}[/tex]
[tex] \mathrm{\angle TDB = \dfrac{1}{2} \times 90 \degree}[/tex][tex] \mathrm{\angle TDB =45 \degree } [/tex]_____________________________
[tex]\mathrm{☠ \: TeeNForeveR \: ☠}[/tex]
Aisha and some friends are going to the movies. At the theater, they sell a bag of
popcorn for $3.75 and a drink for $5. How much would it cost if they bought 5 bags of
popcorn and 8 drinks? How much would it cost if they bought p bags of popcorn and
d drinks?
Answer:
price of 5 bags of popcorn = 3.75 x 5 = 18.75
price of 8 drinks = 5 x 8 = 40
price of p bags of popcorn = 3.75 x p
price of d drinks = 5 x d
If the length of qr is 8 cm and the length of qs is 12 cm, what is the length of rs? No links Pls
Answer:
8.94
Step-by-step explanation:
Given that
qs = 12cm
qr = 8cm
Required
rs
Using the pythagoras theorem
Let us assume qs is the hypotenuse side
qs² = qr² + rs²
12² = 8² + rs²
144 = 64 +rs²
rs² = 144 - 64
rs² = 80
rs = √80
rs = 8.94
Hence the value of rs is 8.94
What is the equation of a circle with a center located at (4, -1) and a radius of 9?
Answer:
(x-4)^2 + (y+1)^2 = 81
Step-by-step explanation:
you clearly have internet access and could have very quickly searched for the equation of a circle.
(x-h)^2 + (y-k)^2 = r^2
with (h,k) being the center.
=> (x-4)^2 + (y+1)^2 = 81
You spin the spinner, flip a coin, then spin the spinner again. Find the probability of spinning an odd number, flipping heads, then spinning another even number.
Answer:
spinng of an odd number -50%
fliping heads - 50%
spinin an even number- 50%
Step-by-step explanation:
From a stick 2y metres long, I cut a piece of length 4y centimetres. What fraction of the original stick remains?
None of these
49/50
-1/2y
-2y
Answer:
-1/2y
Step-by-step explanation:
2/4 = 1/2
please help quickly pls D:
please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!
Answer: 120 cubed inches
Step-by-step explanation:
First, multiply them all together. 6x10x2 = 120 cubed inches
Jack is building a rectangular fence for his ferret. He has 20 feet of fencing and wants the short side of the fence to be 7 2 feet. How long will the other side of the fence be? Write the answer in decimal form. The long side will be feet.
Answer:
6.5 feet
Step-by-step explanation:
The guy above me is correct its 6.5 feet
25A) Find the length of a rectangular lot with a perimeter of 132 feet if the
length is three more than twice the width.
Answer:
34.5 ft
Step-by-step explanation:
~Refer to the attachment for the solution.
PELASE HELP ME I NEED HELP
1-Which or the following ratios are equivalent?
2-find this area.
3-what is the area of this trapezoid?
Answer:
1) 22:14 and 11:7
2) 39m^2
3) 39cm^2
find the total surface area of a triangular prism 17cm 8cm 7cm 15cm
Answer:
hey I don't know which one is the hight
please help!!! i will mark brainliest!!
Answer:
A. 96
C. 48
D. 24
Step-by-step explanation:
Multiples of 8
8 = 8, 16, 24, 32, 40, 48, 56, and 64, 72, 80, 88, 96, 104,.......
Multiples of 12
12 = 12, 24, 36, 48, 60, 72, 84, 96, 108,........
Common multiples of 8 and 12 = 24, 48, 72 and 96
The correct answers are:
A. 96
C. 48
D. 24