9514 1404 393
Answer:
72
Step-by-step explanation:
The difference of 45 means the difference of digits in the number is 45/9 = 5. So, the ones digit is 7-5 = 2, and the number is 72.
__
If you want an equation, you can use x for the ones digit.
70 +x = 45 +(10x +7)
18 = 9x . . . . . . . . . . . . . subtract 52+x from both sides
2 = x
The ones digit is 2, so the number is 72.
_____
Further explanation
If you start with the two digits xy in a number and reverse them, the difference between the numbers xy and yx is ...
(10x +y) -(10y +x) = 9(x -y)
This tells you the difference between the digit-reversed numbers is 9 times the difference between the digits.
Answer:
the answer is 72
Step-by-step explanation:
:))))))
The method of tree ring dating gave the following years A.D. for an archaeological excavation site. Assume that the population of x values has an approximately normal distribution
1229 1257 1243 1194 1268 1316 1275 1317 1275
(a) Use a calculator with mean and standard deviation keys to find the sample mean year x and sample standard deviation s. (Round your answers to the nearest whole number.)
(b) Find a 90% confidence interval for the mean of all tree ring dates from this archaeological site. (Round your answers to the nearest whole number.)
Answer:
A) Mean = 1264
Standard deviation = 37
B) CI ≈ (1241, 1287)
Step-by-step explanation:
A) Mean = Σx/n
Σx = 1229 + 1257 + 1243 + 1194 + 1268 + 1316 + 1275 + 1317 + 1275
Σx = 11374
Mean(x¯) = 11374/9
Mean(x¯) ≈ 1264
Standard deviation = √(∑(x - x¯)²/(n)
From online calculator;
Standard deviation; s ≈ 37
B) Our distribution factor is; DF = n - 1 = 9 - 1 = 8
From t-table attached, our critical value at 90% Confidence interval is t = 1.86
Formula for confidence interval is;
CI = x¯ ± t(s/√n)
CI = 1264 ± 1.86(37/√9)
CI = 1264 ± 22.94
CI ≈ (1241, 1287)
Katie needs 3/4 cup of sugar to make cookies. She only has 1/3 cup. How much more sugar does Katie need?
Answer:
[tex]\frac{5}{12}[/tex] cups
Step-by-step explanation:
This question is asking for the difference between the two values so subtraction is necessary
[tex]\frac{3}{4} -\frac{1}{3}[/tex]
Multiply the top and bottom of the first fraction by 3 and the second one by 4[tex]\frac{3*3}{4*3} -\frac{1*4}{3*4} = \frac{9}{12} -\frac{4}{12}[/tex]
Now just substract
9 - 4 = 5 ==> [tex]\frac{9}{12} -\frac{4}{12} = \frac{5}{12}[/tex]
Find the volume of the cone.
13 cm
r= 9 cm
V = [?] cm3
Round to the nearest tenth.
Answer:
1103.1 is the answer
Step-by-step explanation:
Please help me with this and I will mark brainliest.
Bottom = 2 x 4 x 3 = 24 cubic meters
Top = 2 x 2 x 3 = 12 cubic meters
24-12=12
The bottom is 12 cubic meters larger
Here is a picture of me!
Answer:
where's the pic?
Step-by-step explanation:
40. Find UW.
T
6
5
U +-
The measure of UW is
type your answer...
Answer:
9
Step-by-step explanation:
UT^2 = UV * UW
6^2 = (x - 7)(x - 7 + 5)
36 = (x - 7)(x - 2)
36 = x^2 - 2x - 7x + 14
x^2 - 9x - 22 = 0
(x - 11)(x + 2) = 0
x - 11 = 0 or x + 2 = 0
x = 11
UW = x - 7 + 5
UW = 11 - 7 + 5
UW = 9
What is the contrapositive of the following conditional? If a number is divisible by 10, then it is divisible by 5.
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer: No because that is not always true.
Explanation:
I hope this helped!
<!> Brainliest is appreciated! <!>
- Zack Slocum
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
The price for a car in 2015 was RM 54000. This was 10% higher compared to the year 2014?
Answer:
RM 49090.9090
About $11,857.71 USD
Step-by-step explanation:
RM is Malaysian Ringgit
[tex]org \: amount \: = \frac{current \: amount}{multiplier} \\ increase \:by \:10 \: percent \\ 100 \: percent \: + \: 10 \: percent \: = 110 \: percent \\ 110 \: percent \: = 1.10 \\ org \: amount \: = \frac{54000}{1.10} = 49090.9090[/tex]
Brendan's older sisters, Angie and Alexa, are twins. For their graduation, he made each of them a bouquet of flowers. For Angie's bouquet, he used 6 lilies and 12 daisies. For Alexa's bouquet, he used 4 lilies and 14 daisies. Which bouquet had a lower ratio of lilies to daisies?
Answer:
Alexa's bouquet had a lower ratio.
Step-by-step explanation:
This is hard for me but easy for you so what’s the answer ?
Step-by-step explanation:
112=35+d
112-35=d
d=77
The circumference of a circle is 7π in. Find its radius, in inches.
Answer:
3.5 in
Step-by-step explanation:
Circumference = 2π(radius)
7π = 2π (radius)
7π/2π = radius
Pi in numerator and denominator cancel each other.
7/2 = radius
3.2 in = radius
Answer:
[tex] \bf \huge \: 11 \: inches.[/tex]
Step-by-step explanation:
Given :The circumference of a circle is 7π in.to find :Find its radius, in inches.formula used :r = c/2where,
r = radius c = circumference explanation :⟼ r = c/2
⟼ r = 7×22÷7/2 in
⟼ r = 22/2 in
⟼ r = 11 in.
Hence, radius is 11 inches.
[tex]3 \sqrt{12} [/tex]
Answer:
[tex]3 \sqrt{12}
3 Square root of (4×3)
3square root of (2²×3)
(3×2)Square root of 3
=6 square root 3
write the log equation as an exponential equation
10 POINTS PLEASE HELP DUE SOON
Answer:
10.3
Step-by-step explanation:
Answer:
4+6.3=10.3
Step-by-step explanation:
BD=ED=1/2*BD=3
5^2-3^2=4^2; EC=4
7^2-3^2=[tex]\sqrt{40}[/tex]≈6.3
AC=AE+EC=4+6.3=10.3
Marissa claims that stacking 6 blocks with dimensions of One-half times 1 times 1 will give the same volume as stacking 9 blocks with dimensions of One-third times 1 times 1. Which statements about her claim are true? Check all that apply. Six of the one-half cubes would have a volume of 3 cubic units. Nine of the one-third cubes would have a volume of 6 cubic units. Since One-half and One-third do not have common factors, stacks of one-half cubes and stacks of third-cubes could never have the same volume. Three of the one-third cubes will make 1 unit cube. Two of the one-half cubes will make 1 unit cube. Both stacks will have a volume of 3 cubic units.
Answer:
correct choices:
six of the one-half cubes would have a volume of 3 cubic units.
three of the one-third cubes will make 1 unit cube.
two of the one-half cubes will make 1 unit cube.
both stacks will have a volume of 3 cubic units.
Step-by-step explanation:
Answer:1,4,5,6
Step-by-step explanation:
your welcome
Which equation has a solution of k = 3.5?
Answer:
an example of an equation?
if you want one step you can try
10k=35
if you want two step
10k-17=18
Step-by-step explanation:
Help me pleaseeee i need to finish
Answer:
x=4
Step-by-step explanation:
trust me I got it right
Write an equation to represent the following statement.
you can only use ( -,+,*,x/y)
Answer:
well I think it's 22-14=x(represent J for X)
22-14=x
x=8
therefore 8is14less than 22please helpppppppppppppppppppppppp
Answer:
8 [tex]<[/tex] x [tex]<[/tex] 12
Step-by-step explanation:
Have a nice day!
Write the expression that represents the area of the shaded sector in terms of pie
Answer:
0.71xπ ft²
Step-by-step explanation:
Area of a sector = (A/360)πr², where A is the angle and r is the radius.
Area = x(1/360)π16²
=(256/360)xπ
=0.71xπ ft²
Answer
Step-by-step explanation:
no clue but I need more points so
which of the points (s,t) is inside the shaded region of the set of inequalities qualities shown below?
Answer:
Step-by-step explanation:
A looks good
Given that the two triangles below are similar , find the values of g and h
Answer:
g = 4
h = 4.5
Step-by-step explanation:
The corresponding sides of two similar figures are proportional to each other.
Therefore,
[tex] \frac{g}{3} = \frac{8}{6} = \frac{6}{h} [/tex]
✔️Find g:
[tex] \frac{g}{3} = \frac{8}{6} [/tex]
Cross multiply
g*6 = 8*3
6g = 24
Divide both sides by 6
g = 24/6
g = 4
✔️Find h:
[tex] \frac{8}{6} = \frac{6}{h} [/tex]
Cross multiply
8*h = 6*6
8h = 36
h = 36/8
h = 4.5
How much will be the amount after 29 years to the nearest cent
if you actually know plz give an explanation to the answer so i know you aren't just answering for points, please help this is due before 12:00
Answer:
D
Step-by-step explanation:
At least 30 minutes, so this means 30 minutes and above. Now add the probabilities starting from 30
1/4 + 1/4 + 1/8 + 1/16 = 11/16
Page No
Date:
Convert (1020)5 to base ten numeral
PLS HELP
I need to know is this right?
Answer:
me and my teacher say yes
Answer:
Yes I think your correct
A thermometer falls from a weather
balloon at a height of 7,744 ft. If the
equation for height as a function of time
is h(t) = -16t2 + initial height wheret is
time in seconds and h(t) is height in feet,
how many seconds will it take for the
thermometer to hit the ground?
[?] seconds
Answer:
It will take 22 seconds for the thermometer to hit the ground.
Step-by-step explanation:
A thermometer falls from a weather balloon at a height of 7,744 ft.
This means that the initial height is of 7744ft.
h(t) = -16t2 + initial height
So
[tex]h(t) = -16t^2 + 7744[/tex]
How many seconds will it take for the thermometer to hit the ground?
This is t for which [tex]h(t) = 0[/tex]. So
[tex]0 = -16t^2 + 7744[/tex]
[tex]16t^2 = 0 + 7744[/tex]
[tex]t^2 = \frac{7744}{16}[/tex]
[tex]t = \sqrt{\frac{7744}{16}}[/tex]
[tex]t = 22[/tex]
It will take 22 seconds for the thermometer to hit the ground.
On a map, 9 cm represents 15 miles. If the distance between two cities on the map is 15 cm, how many miles separate the cities?
Answer:
15 cm on the map is equal to 25 miles.
Step-by-step explanation:
Given that,
On a map, 9 cm represents 15 miles.
The distance between two cities is 15 cm. We need to find the distance in miles.
9 cm = 15 miles
[tex]1\ cm=\dfrac{15}{9}\ \miles[/tex]
So, 15 cm is equal to,
[tex]15\ cm=\dfrac{15}{9}\times 15\ miles\\\\=25\ miles[/tex]
So, 15 cm on the map is equal to 25 miles.
simplify the expression 2c+2+5c
[tex]\huge\text{Hey there!}[/tex]
[tex]\large\text{Simplify the expression: 2c+ 2 + 5c}[/tex]
[tex]\large\text{2c+ 2 + 5c}[/tex]
[tex]\large\text{COMBINE the LIKE TERMS}[/tex]
[tex]\large\text{\bf 2c + 5c}\large\text{ + \underline{2}}[/tex]
[tex]\large\text{\bf 2c + 5c = \huge 7c}[/tex]
[tex]\large\text{\underline{2} = \huge \underline{2}}[/tex]
[tex]\large\text{= \bf 7c }\large\text{+ \underline{2}}[/tex]
[tex]\boxed{\boxed{\large\text{Answer: \huge \bf 7c + 2}}}\huge\checkmark[/tex]
[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
Question 15 2 points)
The PERIMETER of the rectangle shown is 236 inches. Find the value of x given the dimensions of the rectangle belove.