Answer:
a
Step-by-step explanation:
i did it on study island
find the value of x and please show how
Answer:
x = 12°
Step-by-step explanation:
The sum of angles in a triangle is 180°.
So,
39° + 53° + 4° + 7x = 180°
Add all the numbers on the left up.
96° + 7x = 180°
Subtract 96 from both sides.
7x = 84°
x = 12°
Hope this helps!
Answer: x= 12
Step-by-step explanation:
Triangle angle sum theorem says that the interior angles of a triangle sum to 180 degrees. Set the sum of all of these angles equal to 180 to solve. 39+53+ (4+7x) = 180. Combine like terms. 96 +7x = 180. Subtract 96 from both sides. 7x = 84. Divide both sides by 7. X = 12
Tell whether the equation represents direct variation. If it does find the
constant of direct variation. -12 + 8y +12 = 7x.
Given:
The equation is
[tex]-12+8y+12=7x[/tex]
To find:
The constant of direct variation if the given equation represents direct variation.
Solution:
If y is directly proportional to x, then
[tex]y\propto x[/tex]
[tex]y=kx[/tex] ...(i)
Where, k is the constant of proportionality.
We have,
[tex]-12+8y+12=7x[/tex]
[tex]8y=7x[/tex]
[tex]y=\dfrac{7}{8}x[/tex] ...(ii)
At x=0,
[tex]y=\dfrac{7}{8}(0)[/tex]
[tex]y=0[/tex]
The equation (ii) passes through (0,0). So, it represents a proportional relationship.
On comparing (i) and (ii), we get
[tex]k=\dfrac{7}{8}[/tex]
Therefore, the constant of proportionality is [tex]k=\dfrac{7}{8}[/tex].
Which pair of triangles below MUST be similar?
Answer:
i think is C
Step-by-step explanation:
Answer:
Its C
Step-by-step explanation:
Brain
Fully Factorise 3x-12
Answer:
3(x-4)
Step-by-step explanation:
3×4=12 and 3 also goes into 3x
2. Tanya is 15 years older than Sarah. In 3 years, the sum of their ages will be 41.
a) Write an expression for Tanya's age in terms of Sarah's age. Use S to represent Sarah's
current age
b) Write an expression for how old Tanya will be in 3 years, using the expression you wrote
for her age
c) Write an expression for how old Sarah will be in 3 years, using S to represent Sarah's
current age.
d) Write an equation that shows the sum of their future ages will be 42
e) Solve that equation to find Sarah's current age
f) What is Tanya's current age?
Mrs. Wu uses a 25% off coupon to buy 1 adult ticket and 1 child ticket to a movie. She pays a total amount of $9.00. A child ticket without the coupon costs $4.00. Write an equation that can be used to find the cost of an adult ticket, x, without the coupon.
Not the answer:
I have no idea, also when I tried the first answer... it said it was wrong...
Program:
the program was hmh
$28 is what percent of $70
Answer:
The answer would be 40%
Answer:
40%
Step-by-step explanation:
Please help me in math. Write an equation of the parabola shown.
Answer:
[tex]y = \frac{1 }{8} {(x + 3)}^{2}[/tex]
Step-by-step explanation:
[tex]y = a(x - h)^{2} + k \\ y = a(x - ( - 3))^{2} + 0 \\ using \: points \: (1 ,\: 2) \\ 2 = a {(1 - ( - 3))}^{2} \\ 2 = a{4}^{2} \\ 16a = 2 \\ \boxed{ a = \frac{1}{8} } \\ hence \to \\ y = \frac{1}{8} (x - ( - 3))^{2} \\ y = \frac{{(x + 3)}^{2} }{8} [/tex]
AA'B'C'is a reflection of AABC over the y-axis. What is the length of A'C'?
Answer:
(A). 6 units
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
30pts! im currently in the middle of taking the test :(
Rationalize the denominator of square root of negative 16 over open parentheses 1 plus i close parentheses plus open parentheses 6 plus 3 i . (6 points)
√-16
________
(1+i)+(6+3i)
Answer:
16 /65 + 28 i /65
Step-by-step explanation:
Answer:
16+28i over 65
Step-by-step explanation:
toot the test
A high school track team's long jump record is 24 ft 9 1/4 in. This year, John's best long jump is 24 ft 2 1/2 in. If long jumps are measured to the nearest quarter inch, how much farther must John jump to break the record?
Answer:
I think it's 6 3/4 ft
Step-by-step explanation:
Classify the triangle with vertices A(3, 2), B(-2, 0), and C(-1, 4) by finding the length
of each side.
Equilateral (all sides are the same length)
Isosceles (two sides are the same length)
These three points are co-linear and do not form a triangle
Scalene (all sides are different length)
Please help fast
Answer:
Step-by-step explanation:
Oh then you just multiply it
i need help guys plz
Answer:
1. A
2. D
Step-by-step explanation:
Hope this helps :)
The formula for the volume of a pyramid Is V = 1/3 Bh, where V is the volume, B is the area of the base, and h is the height of the pyramid. Cecilia
has a pyramid-shaped candle with a square base. The volume of the candle is 720 cm3 and the area of the base is 36 cm2
Answer:
12
Step-by-step explanation:
so the formula is V=1/3 Bh we dont have h so u just do 1/3 x 36
36 = your base
lol please explain how to do this
Find the missing side in each triangle using any method.
The missing side lengths of the right triangles are AC = 13 and DE = 24.
What is the Pythagorean theorem?In a right-angled triangle, the square of the hypotenuse side is equal to the sum of the squares of the other two sides, according to Pythagoras's Theorem.
Given the two right triangles.
The hypotenuse of the first right triangle is given by:
AC² = 5² + 12²
AC² = 25 + 144
AC² = 169
AC = 13
The length of the leg in the second triangle is given by:
DE² = 26² - 10²
DE² = 676 - 100
DE² = 576
DE = 24
Hence, the missing side lengths of the right triangles are AC = 13 and
DE = 24.
Learn more about Pythagorean thoerem:
https://brainly.com/question/16307146
#SPJ2
Which expression is equivalent to 8x + 14 +9x - 5?
26x
36x
17x + 9
17x + 19
Answer:
36x
Step-by-step explanation:
You add the two common numbers and go from there
Rose has 6 pieces of yarn that are each 9 centimeters long. Sasha gives Rose a piece of yarn. Now Rose has a total of 81 centimeters of yarn what is the length of yarn that Sasha gives Rose?
Help me!!
Answer:
27cm
Step-by-step explanation:
6x9=54cm
81 - 54 = 27cm
Answer:
27
Step-by-step explanation:
After simplifying, which expressions are equivalent? Select three options.
Answer:
its A C and E
Step-by-step explanation:
just took the quiz
a rhino can run at speeds at about 28 miles per hour, what is that number in feet per second, to the nearest whole number?
Answer:
41.066666666 feet per second
Step-by-step explanation:
Answer:
41 feet per second
Step-by-step explanation:
5. The spinner is spun once, and the coin is flipped once. Which answer
choice has all the possible outcomes? Spinner (1, 2, 3, 4); Coin (H, T)*
A 1H, 1T, 2T, 3H, 3H, 4H, 4T
B 1H, 1T, 2H, 2T, 3H, 3T, 4H, 4T
C 1H, 1T, 2H, 2T, 4H, 4T, 5H,
D 1, 2, 3, 4, H, T
Answer:
The answer is B
Step-by-step explanation:
Hope it helps
Please give me the brainliest please!!! :[ I've never gotten one before.
what is the unknown angle of a polygon with other angles 85 degrees and 65 degress , first correct answer will become the brainleyest
Answer: 30 degrees
Step-by-step explanation:
Assuming this is a three sided polygon, this would make it a triangle. Interior angles of a triangle sum to 180 degrees. 85+65+u=180
150 + u = 180
U = 30 degrees
Help pls!! What additional information is needed to prove that RSTU is a rectangle?
Answer:
the answer is the first option
Nathan is saving up to buy a new phone. He already has $90 and can save an additional $10 per week using money from his after school job. How much total money would Nathan have after 4 weeks of saving? Also, write an expression that represents the amount of money Nathan would have saved in w weeks.
Answer:
$130
Step-by-step explanation:
If Nathan already has $90 then you would add the amount of money collected after the 4 weeks. In each week he makes $10.
The equation would be $90+($10x4)= $X
11.11 Go math 5th grade pages 510A 510B.
oh god does anyone understand this? I need help it’s for a test and I wanna do good!!
Answer:
A
Step-by-step explanation:
Its a right angle, so you have to use trigonometry.
To find x , you use sin60° = opposite/hypotenuse
opposite = x and hypotenuse = 5 . So,
sin60°= x/ 5
5sin60° = x
put the value into your calculator you ' ll get:
[tex] x = \frac{5 \sqrt{3} }{2} [/tex]
To find y, cos60°= adjacent/hypotenuse
adjacent= y and hypotenuse = 5. So,
cos60°= y/5
5cos60°=y
[tex]y = \frac{5}{2} [/tex]
Hope I was able to help. Good luck!<3
Please!! Points up for the taking.
Answer:
B
Step-by-step explanation:
Evaluate (3.2) to the second power.
Answer: 36
Step-by-step explanation: Did the quiz and got 100 :)
Help me in my trigonometry
Answer:
BC=53.68
Step-by-step explanation:
Use tangent since you are finding the opposite side and given the adjacent side.
tan(54)=BC/39
BC=53.68
Answer:
C
Step-by-step explanation:
Using the tangent ratio in the right triangle
tan54° = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{BC}{AC}[/tex] = [tex]\frac{BC}{39}[/tex] ( multiply both sides by 39 )
39 × tan54° = BC, then
BC ≈ 53.68 ( to 2 dec. places ) → C
Mary bought more than 72 pencils to distribute to children at an orphanage. She packs these pencils in gift boxes.
If she packs 4 pencils each into x gift boxes, the inequality that represents this situation is
.
The simplified form of the inequality is
Answer:
4x≥=72
Step-by-step explanation:
1. Particularly, we have:
Given:
X: number of gift boxes
2. We then have to write the inequation that models the problem:
"Mary bought more than 72 pencils"
"She packs 4 pencils each into x gift boxes"
Finally we have:
4x≥=72, for the inequality that represent this situation.
When Simplfying (simplified form):
= x≥72/4
= x≥18
Answer:
4x > 72
x > 18
Step-by-step explanation: