Answers
Answer:
23
Step-by-step explanation:
Related Questions
The mean age of 5 people in a room is 31 years.
A person enters the room.
The mean age is now 30.
What is the age of the person who entered the room?
Answers
Answer:
25 year
Step-by-step explanation:
Mean = sum/no. *of observations
Initially, number of people = 5 & let the sum of their ages be S.
=> 31 = S/5
=> 155 = S
When one more entered, number = 6. Let his age be 'a'.
Sum of ages = S + a = 155 + a
=> 30 = (155 + a)/6
=> 180 = 155 + a
=> 25 = a
5.
Which number is a rational number, but NOT a whole number or integer?
A.
-40
10
B.
-20
4
C.
20
10
D.
7
11
Answers
Answer:
D
Step-by-step explanation:
Its D because integers and whole numbers cannot be fractions, while a rational number can. A, B, C, and D can all be simplified into whole numbers while 7/11 cant
A triangle has sides with lengths of 7 miles, 7 miles, and 9 miles. Is it a right triangle yes or no
Answers
Answer:
No
Step-by-step explanation:
Find the discriminant and determine the number of real roots for each equation. Show steps.
-9x^2 + x - 7 = 0
Answers
Answer:
0 real roots
Step-by-step explanation:
Given a quadratic equation in standard form
ax² + bx + c = 0 ( a ≠ 0 )
Then the discriminant is
Δ = b² - 4ac
• If b² - 4ac > 0 then 2 real and distinct roots
• If b² - 4ac = 0 then 2 real and equal roots
• If b² - 4ac < 0 then the roots are not real
- 9x² + x - 7 = 0 ← is in standard form
with a = - 9, b = 1, c = - 7 , then
b² - 4ac = 1² - (4 × - 9 × - 7) = 1 - 252 = - 251
Since b² - 4ac < 0 then the equation has no real roots
how long will it take you and 4 friends to paint the fence?
Answers
Answer:
Check pdf
Step-by-step explanation:
On a coordinate plane, two parabolas open up. The solid-line parabola, labeled f of x, goes through (negative 2, 4), has a vertex at (0, 0), and goes through (2, 4). The dashed-line parabola, labeled g of x, goes through (negative 5, 8), has a vertex at (negative 3, 4), and goes through (negative 1, 8).
Which best describes the transformation that occurs from the graph of f(x) = x2 to g(x) = (x + 3)2 + 4?
left 3, up 4
right 3, down 4
left 3, down 4
right 3, up 4
Answers
Answer:
A
Step-by-step explanation:
Edge 2021
Answer:
A. left 3, up 4
Step-by-step explanation:
Doing it on EDG right now!
Good luck to yalls :)
Solve by factoring.
x2-49 = 0
X=
Answers
Answer: Ok so just remember
difference of 2 perfect squares
a^2-b^2=(a-b)(a+b)
(x)^2-(7)^2=(x-7)(x+7)
set to zero
x-7=0
x=7
x+7=0
x=-7
x=-7 or 7
Hope this helps have a awesome night/day❤️✨
Step-by-step explanation:
Find the missing side of each triangle. Round your answers to the nearest tenth if necessary
Answers
Can someone help me with this geometry question
Answers
Answer:
C. Rectangle that isn't a square
Fill in the blank with the correct word(s) to complete the sentence.
A cube is a three-dimensional figure with six square faces that are ______.
A.
congruent
B.
height
C.
pattern
D.
length
The first person to answer gets a BRAINLEST :))))))))
Answers
Answer:
congruent
..............
PLS I NEED HELP QUICKLY
Answers
Answer:
b + b + h + h and since you have two of each you can say 2b + 2h.
Which expression represents the second partial sum for...?
Answers
Answer:
c
Step-by-step explanation:
just took the quiz
Answer:
C
Step-by-step explanation:
Edge2021
Please help me please omggg
Answers
Cube
Answer
Cube
HELP I NEED HELP ASAP
Luke kicked a soccer ball into the air. The height, f(x), of the ball, in meters, after x seconds was modeled with the function f(x)=-4.5x^2+27x. How many seconds did it take for the soccer ball to hit the ground?
A. 40.5 seconds
B. 3 seconds
C. 6 seconds
D. 2.5 seconds
Answers
Answer:
i think this is the answer
A. 40.5 secods
A specialty running shoe shop has a markup of
45% on the wholesale price of its shoes. The
wholesale price of a given pair of shoes is $65.
Answers
Answer:
65 x 1.45= 94.25
..........
I dont want to use the calc or use my brain bc im lazy. 3 (6) + 4 (2)^3 - 5
Answers
Answer:
33
Step-by-step explanation:
Felix surrounds a 12 in. by 8 in. photo with a frame that is x inches wide. which quadratic function represents the combined area A of the picture and the frame?
A. A(x)=x^2+20x+96
B. A(x)=x^2+40x+96
C. A(x)=4x^2+20x+96
D. A(x)=4x^2+40x+96
Answers
Answer:
Step-by-step explanation:
Total dimensions = (12+2x) inches by (8+2x) inches
A = (12+2x)(8+2x) = 4x² + 40x + 96
b/12 = 5; b = 60 pls. Help by step please
Answers
Answer:
B=60
B divided by 12
60 divided by 12
60/12
12x5=60
60/12=5
Step-by-step explanation: took test
Plz help due tomorrow iff correct ill give brailiest
Answers
Answer:
so d = 43
and the answer to the question is divide
What is the equation of the graph below?
А
y = 2(x + 4)2 – 2
B
y = (x – 4)2 – 2
C y = 2(x - 4)2 – 2
D
y = 2(x – 4)2 + 4
Answers
Answer:
f(x) = 1(x - 4)^2 - 2
Step-by-step explanation:
Recall that the vertex form of the equation of a parabola is
f(x) = a(x - h)^2 + k, where (h, k) is the vertex and a is a scale factor which stretches or compresses the graph vertically.
Looking carefully at the graph, we see that h must be 4 and k must be -2.
Thus, the equation of this parabola is f(x) = 1(x - 4)^2 - 2 (which matches Answer B)
18. The perimeter of the given triangle is 36 cm.
Find the value of x.
Answers
Answer:
x = 7
Step-by-step explanation:
(x+2)+(3x-9)+(2x+1) = 36
6x - 6 = 36
6x = 42
x = 7
on Iready Question 7 angle sum properties Level H what is the answer
Answers
Answer:
Step-by-step explanation:75
Find the measure for angle A.
A. 75
B. 60
C. 30
D. 38
Answers
So the last two add up to 90
x+37+x+67=180 SPOE and CLT
-37 -67 -37
-67
2x=76
———-
2
X=38
180 = 90 + x + 37 + x + 67
180 = 194 + 2x
180 - 194 = 2x
-14 = 2x
-14/2 = 2x/2
-7 = x
substitute x for (-7)
∠A = x + 37
∠A = (-7) + 37
∠A = 30°
Please help!!! I will fail!! I will mark you brainliest!
Lucas is selling ribbons to raise money for the Juvenile Diabetes Research Foundation. His expenses include $46 for materials, plus $0.02 per ribbon. If Lucas charges $0.25 per ribbon, how many ribbons does he need to sell to break even? Write a system of equations that represents the situation. Let x represent the number of ribbons, and let y represent the expense or revenue. Solve the system of equations.
Answers
Answer:
He needs to sell 200 ribbons to break even.
Step-by-step explanation:
The break even point is where the expenses are equal to the earnings, so you can write an expression that indicates that Lucas' expenses are equal to his earnings:
46+0.02x=0.25x
Now, you can solve for x to find the answer:
46=0.25x-0.02x
46=0.23x
x=46/0.23
x=200
According to this, the answer is that he needs to sell 200 ribbons to break even.
Tell whether the triangle is a right triangle. Show Work.
Answers
Answer:
if the angle is the same as a corner of a square it is a right angle
Step-by-step explanation:
A gym membership charges an initial
fee of $ 125 plus a $25 fee every
month. Another gym only charges $50
every month. After how many months
will the total cost for both gyms be the
same?
Answers
Answer:
the gym that has 150, will take 2 months and the gym that has 50 will take 6 months
first gym:
150
300
second gym:
50
100
150
200
250
300
1. What is the first step
in solving equations?
Answers
Answer:
Read and highlight the problem
Step-by-step explanation:
Answer:reading the problem and looking for key words to help you solve the answer
Step-by-step explanation:
A spinner with sections Red, Blue, Yellow, and Green is spun 3 times. What is the probability that it will land on yellow all 3 times?
Answers
Answer: 1/64
Step-by-step explanation:
1/4 to land on Yellow
We do it 3 times
1/4 x 1/4 x 1/4 = 1 /64 =0.015625
Please help there is no word problem.
5 − a + 4a =
Answers
5-a+4a
=5+3a
Question 2 (25 points)
Solve for the missing hypotenuse. Round your answers to the nearest tenth. Figures are not drawn to scale.
Help me ASAP!!!!!!!! Plzzzz
Answers
Answer:212.4
Step-by-step explanation:
Opposite/hypotenuse
Sin23=83/x
Multiply x to both sides to cancel out the x under 83
You get xsin23=83
Then divide sin23 to both sides
X=83/sin23
X=212.4