Question isn't well formatted :
Actual question :
One day, River writes down the numbers 1,2,...,999. What is the sum of all the digits that River wrote down?
Answer:
499500
Step-by-step explanation:
Number written :
1, 2,...., 999
The interpretation of the number written is 1 up to 999
Hence, the sum of the number written is the addition of all the numbers from 1 up to 999
Using the python program :
sum = 0
for i in range(1000):
sum += i
print (sum)
Output = 499500
Answer:
13500
Step-by-step explanation:
Notice how it says the sum of all of the DIGITs. We have to add together the sum of the digits. We can do this by:
300(1 + 2 + 3 + 4.... + 9) = 300*45 = 13500
What is x?
-4x-2 /3=(-6)
Answer:
4/3
Step-by-step explanation:
Answer:
x= 4
Step-by-step explanation:
-4x-2 /3=(-6)
-4x-2= 3 (-6)
-4x-2=-18
-4x=-18+2
-4x=-16
x=-16/-4 = 16/4 = 4
XYZ will be translated so that the coordinates of X are (5,11)
Answer: B
Step-by-step explanation:
Which of the following shapes is a convex nonagon?
OA)
OB)
OC)
OD)
It is asking for a convex nonagon, not a convex polygon. So in this case we are looking for a shape with 9 straight lines and 9 angles. Which means we can cross A out.
Now we need to look at which nonagon is a convex nonagon which means that we are looking for the shape having only interior angles measuring less than 180°. So this means that B and D can be crossed out.
Thus, the answer is C.
P.S. If you find my answer helpful, please mark me brainiest!
simplify this please (45)(26)
Answer:
1170
Step-by-step explanation:
45 times 26
Answer:
1170
45x26=1170
Find the length of AB.
00240°
AB = [? ]m
140°
8 m
B
Round your answer to the nearest hundredth.
Answer:
19.54 m
Step-by-step explanation:
[tex]l(\widehat {AB}) = \frac{ \theta}{360 \degree} \times 2 \pi r \\ \\l(\widehat {AB}) = \frac{140 \degree}{360 \degree} \times 2 \times 3.14 \times 8 \\ \\ l(\widehat {AB}) = \frac{7}{18} \times 2 \times 3.14 \times 8 \\ \\ l(\widehat {AB}) = \frac{351.68}{18} \\ \\ l(\widehat {AB}) = 19.5377778 \\ \\ l(\widehat {AB}) \approx 19.54 \: m[/tex]
3. Find the height of rectangle with area (2x^2-9x+9) ft^2 and width (2x-3) ft
Answer:
The height of the area is (x - 3) ft.
Step-by-step explanation:
You can do this a few ways. You could use long division to divide the area by the width, or you could just factor the area, which is guaranteed to have the width as a factor, leaving you with the height.
Let's go with factoring, as that's probably what this question is intended as:
[tex]= \frac{2x^2 - 9x + 9}{2x - 3} \\\\= \frac{2x^2 - 6x - 3x + 9}{2x - 3} \\\\= \frac{2x(x - 3) - 3(x - 3)}{2x - 3} \\\\= \frac{(2x - 3)(x - 3)}{2x - 3} \\\\= x - 3[/tex]
Helllppppppppppp pllzlzlzllzlz check the picc
Answer:
[tex]Rx=1(p) = (4,7)[/tex]
Step-by-step explanation:
he given point P has coordinates, [tex](-2,7)[/tex] We want to find the image of this point, after a reflection in the line [tex]x=1[/tex]
what is the degree of the function f(x)=x⁴-5x+8+x²?
First put it in decreasing power according to x.
x^4-5x+8+x^2
=x^4+x^2-5x+8
Now this question is asking what is the highest degree of x you see in this function.
4 of course.
Therefore the answer to his question is degree of 4.
Done!
Which of the following shows the correct steps to find the value of
1
? (1 point)
83
O
83 = (43)3 = (4)
= 4
()() -
088=(23) =(2,394 = 2
O &$=(20) = (2+3)=
2+
= 16
О
164 = (82)4 = (8)
= 8
9514 1404 393
Answer:
b, d
Step-by-step explanation:
When you're taking the cube root, the thing you're taking the cube root of is best expressed as a cube.
You know that 2^3 = 8 and 3^3 = 27, so any other representation of 8 or 27 is irrelevant to the problem.
The appropriate choices are the second and fourth ones (B, and D).
what is the proportion of 3 over 7 =n over 28
Peter scored 27 out of 50 in a test. What percent was that? *
-13.5%
-27%
-50%
-54%
Answer:
54% for sure please give me brainliest
Answer:
54%
Step-by-step explanation:
27/50 = 54/100 (multiply the full score untill it is at 100, the use the same number it took for that and multiply the points)
plz answer. Its urgent. thanks
Answer:
[tex] a = \dfrac{5}{18} [/tex]
[tex]b = -\dfrac{1}{18}[/tex]
Step-by-step explanation:
You need to rationalize the fraction.
[tex] \dfrac{1}{5 + \sqrt{7}} = a + b\sqrt{7} [/tex]
[tex] \dfrac{1}{5 + \sqrt{7}} \times \dfrac{5 - \sqrt{7}}{5 - \sqrt{7}} = a + b\sqrt{7} [/tex]
[tex] \dfrac{5 - \sqrt{7}}{25 - 7} = a + b\sqrt{7} [/tex]
[tex] \dfrac{5 - \sqrt{7}}{18} = a + b\sqrt{7} [/tex]
[tex] \dfrac{5}{18} - \dfrac{1}{18}\sqrt{7} = a + b\sqrt{7} [/tex]
[tex] a = \dfrac{5}{18} [/tex]
[tex]b = -\dfrac{1}{18}[/tex]
Jose brought 9 pounds of rice for $4. How many pounds of rice did he get per dollar?
Answer:
1.5 pound ever dollar
Step-by-step explanation:
just calculate
Answer:
2.25 answer
Step-by-step explanation:
9÷4=2.25answer thanks
Sam and Adam share some money in the ratio 2 : 5.
Adam got £12 more than Sam.
Work out how much money Sam received.
Answer:
£8
Step-by-step explanation:
A
Sam:Adam
2:5
3=£12
12÷3=4
1=4
4×2=8
sam=£8
A marble is selected from a bag containing eight marbles numbered 1 to 8.
The number on the marble selected will be recorded as the outcome.
Consider the following events.
Event A: The marble selected has an odd number.
Event B: The marble selected has a number from 3 to 6.
Give the outcomes for each of the following events.
If there is more than one element in the set, separate them with commas.
(a) Event "A and B":
mm
(b) Event "A or B".
X
?
(C) The complement of the event B: {I}
Answer:
here you go
Step-by-step explanation:
Is the product of greater or less than ? Is it
easier to compare the product to using the number
line or area model? Explain.
5
8
Answer:
3/5 x 5/8 is less 5/8
Step-by-step explanation:
3/5 x 5/8 = 15/40
Simply
15/40 = 3/8
•
5/8 > 3/8
HELP ILL MARK YOU BRAINLIST
In systems by substitution what is y=x+8 and x+y=2
Answer:
x = -3
Step-by-step explanation:
y = x + 8 and x + y = 2
Using substitution, we know that y = x + 8, so:
x + y = 2
x + (x + 8) = 2
2x + 8 = 2
2x = -6
x = -3
Then we solve for y:
x + y = 2
-3 + y = 2
y = 2 + 3
y = 5
What is the slope of this line?
Answer:
3/4
Step-by-step explanation:
Gradient=6/8=3/4
ANSWER THIS PLZZZZZZ
Answer:
dude all you have to do is add it up its A or B
Answer:
E
Step-by-step explanation:
Hello Miss!! I hope you are doing well.Ms.Sawsan are my answers correct here or is there something I need to change?
Very confused on how to get the inside variables
Miss Van invested some money by using the app e-trade. She tracks her
gains and losses using the app on her phone. Miss Van receives a daily
notification that updates her on all her transactions from the previous day.
This morning, her notification read as follows: Yesterday's investment
activity included a loss of $500, a gain of $740, and another gain of $120.
Log in now to see your current balance. Write an integer to represent the
highlighted box.
Answer:
$360
Step-by-step explanation:
Gains represents additions to her account while losses represent substractions
-$500
+740
+120 ________
$360
40 times 30 equals whatttttttt
Answer:
1200 is your awnser
Step-by-step explanation:
I’m studying and I have trouble with this problem and I need an explanation. Please help me! Thank you
Answer:
Step-by-step explanation:
Im going to assume they want x+108.
You have 2 expressions sitting on a line, so when added to each other they must = 180
So add and set up an equality
x+108+x+78=180
Combine like terms
2x+186=180
Solve
2x+186=180
-180 -180
2x+6=0
-6 -6
2x=-6
________
2
x=-3
Substitute X for -3
-3+108=
105.
7.
Find the range of f(x) = –2x – 5 for the domain {–2, –1, 1, 2}.
A. {–1, –3, 7, 9}
B. {1, 3, 5, 7}
C. {–1, –3, –7, –9}
D. {–1, –3, 3, 5}
Answer: C) [-1,-3,-7,-19]
Step-by-step explanation:
Range = {-2(-2) - 5, -2(-1) - 5, -2(1) - 5, -2(2) - 5} = {4 - 5, 2 - 5, -2 - 5, -4 - 5} = (-1, -3, -7, -9}
Answer:
-2(-2)-5= -1 -2(-1)-5=-3 -2(1)-5=-7 -2(2)-5=-9... A. {-1, -3, 7, 9}
Step-by-step explanation:
By substituting each value of the domain of x in the function and solving it we will get the range of the function for respective domain
The given function is :
f(x) = -2x - 5
For x = -2 , f(x) is:
f(-2) = (-2*-2) - 5 = 4 - 5 = -1
For x = -1, f(x) is :
f(-1) = (-2*-1) - 5 = 2 - 5 = -3
For x = 1 , f(x) is
f(1) = (-2*1) - 5 = -2 -5 = -7
For x = 2, f(x) is
f(2) = (-2*2) - 5 = -4 -5 = -9
The range is -1 , -3 , -7 , -9
Hope this helps ..!!
Thank you :)
For which equation is s=9 not the solution? A.s+6=15,B. 7+s=16 C.13-s=4 ,D.s-3=12
Answer: its D
Step-by-step explanation:
Answer: D♪ヽ(･ˇ∀ˇ･ゞ)
Step-by-step explanation:
urgent solve 5( x- 2 )=35
Step-by-step explanation:
5x-10=35
5x=35+10
5x=45
5x/5=45/5
x=9
- 7r - 3r - 8 = 24.
Answer:
24
Step-by-step explanation:
y = 5х – 7
—3х – 2 y = -12
[tex]-3x-2(5x-7)=-12\\-3x-10x+14=-12\\-13x=-26\\x=2\\\\y=5(2)-7\\y=10-7\\y=3[/tex]
Answer:
[tex](x, y) = (-\frac{29}{2}, -12)[/tex]
Step-by-step explanation:
[tex]-12 = 5 x ( -\frac{29}{2} ) - 7 - 3 x ( -\frac{29}{2} ) - 2 x (-12) = -12[/tex]
