Answer:
Salma, joe, and alan sent 14, 69, and 23 text messages respectively
Step-by-step explanation:
Given that Salma, joe, and alan sent a total of 106 text messages during the weekend, it means that
s + j + a = 106 where s, j, and a are the number of messages sent by Salma, joe, and alan respectively
Given salma sent 9 fewer messages than alan
s = a - 9
Joe sent 3 times as many messages as alan
j = 3a
hence
a - 9 + 3a + a = 106
5a - 9 = 106
5a = 106 + 9
5a = 115
Divide both sides by 5
a = 115/5
= 23
s = 23 - 9
= 14
j = 3* 23
= 69
A set of 25 two digit numbers are listed below 10,17,20,23,24,28,32,39,42,25,26,52,55,58,61,65,66,72,75,78,79,85,94,97,98. What is the probability of the sum of the number's digits is odd?
Answer:
0.48
Step-by-step explanation:
Given the data:
X:
10,17,20,23,24,28,32,39,42,25,26,52,55,58,61,65,66,72,75,78,79,85,94,97,98
Sum of each of the numbers :
1, 8, 2, 5, 6, 10, 6, 12, 6, 7, 8, 7, 20, 13, 7, 11, 12, 9, 12, 15, 16, 13, 13, 16, 17
Probability that sum of the number's digit is odd:
Number of odd sum / total numbers
Number of odd sum = 12
Total numbers = 25
12 / 25
= 0.48
does anyone know the answer
Answer:
y+8x X 5
Step-by-step explanation:
Answer:
first one and last one
Step-by-step explanation:
what is the area of a square yards of a rectangle with a length of 9 yds and a width of 4 yds?
[tex]a = lw[/tex]
[tex]a = (9)(4)[/tex]
[tex]a = 36 \: {yds}^{2} [/tex]
Answer:
Here we can understand that the shape is a rectangle as length is not equal to width.
Area of the rectangle in square yards when length is 9 yds and width is 4 yds will be,
Area of Rectangle = LENGTH × WIDTH
⇒ 9*4
⇒ 36 sd yds
Thus the are will be 36 sd yds
Question:
What are the solutions to 3x^2 + 12x + 6 = 0?
Hint::
use the quadratic formula
Answer:
x₁ = - 2 + √2 , x₂ = - 2 - √2Step-by-step explanation:
[tex]3x^2 + 12x + 6 = 0\\\\a=3\,,\ b=12\,,\ c=6\\\\\\ x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\ x=\dfrac{-12\pm\sqrt{12^2-4\cdot3\cdot6}}{2\cdot3}=\dfrac{-12\pm\sqrt{144-72}}{2\cdot3}=\dfrac{-12\pm\sqrt{72}}{2\cdot3}=\dfrac{-12\pm6\sqrt{2}}{6}\\\\x_1=\dfrac{6(-2+\sqrt{2})}{6}=-2+\sqrt2\\\\x_2=\dfrac{6(-2-\sqrt{2})}{6}=-2-\sqrt2[/tex]
Solve by factoring: x2 – 9x + 20 = 0
A. x = - 4 and x = - 5
B. x = 4 and x = 5
C. x = 20 and x = - 9
D. x = - 4 and x = 5
Show your work
Answer:
Answer
Given equation is:
x
2
−9x+20=0
⇒x
2
−5x−4x+20=0
⇒(x−4)(x−5)=0
⇒x=4andx=5
Pls, answer fast with an explanation. At a carnival, it costs $138.00 for 92 tickets. Write an equation that can be used to find the total cost (c) for any number of tickets (t) you buy.
ANSWER ASAP THEIRS A SCREEN SHOT TO HELP SHOW
AND TELL WHY PLEASE
uhh- well uh i need help and it would be lovely if ya’ll helped ty very much
Answer:
x + 3 = y
Step-by-step explanation:
Hope that helps!
Solve the inequality.
20 + 8.1 > 28
Answer:
You can't solve since there is no variables
The inequality from the question is true
Solve the missing angle measurement
A ball falls from the top of a building. When it strikes the ground its velocity is 10 m/s. It took 5 seconds to fall. What is its acceleration? _____ m/s2
Answer:
a = 2 m/s²
Step-by-step explanation:
[tex]a = \frac{v-u}{t}[/tex]
where v is the final velocity, u is the initial velocity, and t is the time it takes. the intial velocity is always 0 m/s. given the equation, we subsitute:
[tex]a = \frac{10m/s - 0 m/s}{5s}[/tex]
a = 10m/s ÷ 5s
a = 2 m/s²
determine if f (x) = -x^3 + 4x^2 +7x - 6 is a odd or even degree
Answer:
Neither
Step-by-step explanation:
It has a y intercept, which is -6, which changes the whole graph, so its neither
Answer:
odd
Step-by-step explanation:
the leading term of the polynomial (the term in a polynomial which contains the highest power of the variable) is -x^3
the degree is 3, which is odd
Can you all help? Giving brainliest to whoever can help me!
Answer:
x=11
Step-by-step explanation:
15x+15=180 they are supplementary angles to each other so their sum is
equal to 180 degrees.
subtract 15 from both sides
15x=165
divide each side by 15
x=11
HELP HELP HELP HELP HELP PLSSSSSSS IM STUCK ASAPPP
Answer:
D is correct
Step-by-step explanation:
because 7×2=14 and 7 times as 2 is 14
please mark me as brainliest answer
Mia got $80 for her birthday and spent $60. What percent of her birthday money does she have left
Answer:
16 percent is left
Step-by-step explanation:
20/100×80
Hope it helps!!
can someone help me how to calculate a square root of 8
Answer:
2.82842712475
Step-by-step explanation:
when you square 2.82842712475 your answer is 8 so the number above Is answer
Answer:
8 = 64 √8 = 2.828
Step-by-step explanation:
√8 = √(4 * 2) = √4 * √2 = 2√2 ≈ 2.828427.
Hope this helps you!
help me plz plz i need my grades up
Answer:
Decimal: 2.1
Fraction: 21/10
Jaxon invested $960 in an account paying an interest rate of 6.1% compounded monthly. Assuming no deposits or withdrawals are made, how long would it take, to the nearest year, for the value of the account to reach $1,720
Answer: 10 years
Step-by-step explanation:
1720=960(1+0.061/12)
A light bulb manufacturer claims that the lifetime of the bulbs is normally distributed with a mean of 5000 hours and a standard deviation of 250 hours. If 20000 bulbs are produced on a particular day, what percentage of the bulbs will have a lifetime of between 4750 and 5500 hours?
Answer:
88
Step-by-step explanation:
What is 2/10, 2/5, and 2/20 ordered form least to greatest?
Step-by-step explanation:
2/20, 2/10 , 2/5
set them all to the same denominator of 20:
2/20, ,4/20, 8/20
what is the distance between-2 and -5 on the number line?
Answer:
3
Step-by-step explanation:
on a number line, we use the absolute values to find the difference.
the absolute value of -2 is 2
the absolute value of -5 is 5
5-2=3
so, the distance between -2 and -5 on a number line is 3
Each week, the price of oranges at the farmer's market increases by 20%. The price of oranges this week is 2.50 What was the price last week
Answer:4.50
Step-by-step explanation:
Someone plz help me
I will give brainliest!!
Answer:
3) fifty seven and three tenths
4) 1, 2, 4, 8, 16
5) No, she would have only 60 pictures in the album. When she has 80 pictures in total. 15×4=60
Step-by-step explanation:
Hope this Helps!!
:)
Select the correct days. Gina tracks the low temperatures for a city over six days. Identify the days colder than -1.75°F.
Answer:
[tex]Monday = -2.5F[/tex]
[tex]Tuesday = -1.9F[/tex]
Step-by-step explanation:
Given
See attachment
Required
Days colder than -1.75°F
From the attachment, we have:
[tex]Monday = -2.5F[/tex]
[tex]Tuesday = -1.9F[/tex]
[tex]Wednesday = 0F[/tex]
[tex]Thursday = -1.5F[/tex]
[tex]Friday = 0.5F[/tex]
Days with temperature less than -1.75°F are colder.
-2.5 and -1.9 are less than -1.75
So, we have:
[tex]Monday = -2.5F[/tex]
[tex]Tuesday = -1.9F[/tex]
Answer:
:)
Step-by-step explanation:
PLS helpp
ill give brainliest
A new car is purchased for 24800 dollars. The value of the car depreciates at 12% per year. What is the y-intercept (starting value)? *
Answer:
$24,800
Step-by-step explanation:
that's how much the car costs at year 0
Answer:
Step-by-step explanation:
The starting value, y intercept, is just the initial value as it has not depreciated when time or x is zero.
The equation described is y=24800(0.88)^x
The speed limit on a road is 45 mph what is the rate in miles per minute
The rate in miles per minute is 320
Please please help I will give brainliest
Answer:
67
4*4*4=64
64+3=
67
I need help with this question. I need to find the perimeter of the hexagon RSTUVW.
9514 1404 393
Answer:
47.71
Step-by-step explanation:
Two "special" triangles are involved.
ΔSWR is a 30°-60°-90° right triangle, so will have sides in the ratio 1 : √3 : 2.
ΔUVW is a 45°-45°-90° right triangle so will have sides in the ratio 1 : 1 : √2.
For ΔSWR, the side SW is given as 6, so the other sides are ...
WR = 6√3
RS = 2(6) = 12
For ΔUVW, the side WU is given as 8, so the other sides are ...
UV = VW = 8/√2 = 4√2
Then the perimeter of the figure is ...
P = RS +ST +TU +UV +VW +WR
P = 12 +8 +6 +4√2 +4√2 +6√3 ≈ 47.71
Find the area of the circle 18in
1017.88in^2
You need to use pi
Answer:
1017.88inches^2
Step-by-step explanation:
Area of a circle=pi * radius^2
324*pi=1017.88
