Pls help!!! Pls help!!!
This is a summation notation also called the sigma notation.
In this case it means starting with k=0 what's the sum of (1+k!) for all integer k until 4
So we just need to find the sum 1+0!+1+1!+1+2!+1+3!+1+4!=5+1+2+6+24=8+30=38
Graph f(x)=2x+1 and g(x)=−x+7 on the same coordinate plane.
What is the solution to the equation f(x)=g(x) ?
x=?
If you want to know what's the value of x in 2 functions, you need to do a single variable equations.
What is the slope of the line shown above?
Sandra measures the diameter of a hula hoop as 0.7 m. Write and solve an equation to
determine the radius of the hula hoop.
What is the solution of the following system? Use the substitution method.
y – 2x = 8
16 + 4x = 2y
O The only solution is (24, 0).
O The only solution is (1, 10).
○There is no solution.
O There are an infinite number of solutions.
Answer:
y-2x=8 (label equation 1)
16+4x=2y (label equation 2)
divide equation 2 by 2 to find y
y=2x+8
sub this in equation 1
(2x+8)-2x=8
2x+8-2x=8
8=8
once you get to this point because 8=8 there are an infinite number of solutions because you can't divide by 0. So the answer is B
3x – 3y = -9
4x + 4y= 12
show me the steps for substitution?
Answer:
y=3 and x=0
Step-by-step explanation:
3x−3y=−9. i'm going to solve for x.
3x−3y+3y=−9+3y
3x=3y−9
3x/3=(3y-9)/3 to isolate x we have to divide everything by 3
x=y−3
so now that we have x we can substitute it in 4x+4y=12
4(y-3)+4y=12
4y-12+4y=12
8y-12=12
8y-12+12=12+12
8y=24
8y/8=24/8
y=3
we have y which equals 3, so now we can substitute it into any equation so solve for x again.
3x – 3y = -9
3x-3(3)=-9
3x-9=-9
3x-9+9=-9+9
3x=0
3x/3=0/3
x=0
so, final answers are y=3 and x=0
checking our work:
3(0)-3(3)=-9
0-9=-9
-9=-9 true
4(0)+4(3)=12
0+12=12
12=12 true
Devaughn is 11 years older than Sydney. The sum of their ages is 53 . What is Sydney's age?
Answer:
Sydney is 21 years old
Step-by-step explanation:
1. subtract 11 from 53 (53-11=42)
2. divide the difference by 2 (42/2=21)
Answer:
x+11+x=53
2x+11=53
-11. -11
2x=42
x=21
Sydney is 21 years old
Devaughn is 32 years old
Help please!!!! EEEEEEEEEEEE
Answer:
f(-3)=(-3)²-2(-3)=9--6=9+6=15
Answer:
15
Step-by-step explanation:
f(x)=x^2-2x
f(-3)=(-3)^2-2(-3)
f(-3)=9+6
f(-3)=15
Find the measurement and round to the nearest tenth.
[Law of Sines]
===================================================
Work Shown:
The uppercase letters A,B,C are the angles, while the lowercase counterparts (a,b,c) are the sides opposite those angles. For instance, side b is opposite angle B.
We have this known info:
A = 59 degreesC = 15 degreesc = 10 yardsThe ultimate goal is to find side BC, which is opposite angle A. So this is side a.
Now apply the law of sines to solve for 'a'.
sin(A)/a = sin(C)/c
sin(59)/a = sin(15)/10
10*sin(59) = a*sin(15)
a*sin(15) = 10*sin(59)
a = 10*sin(59)/sin(15)
a = 33.1184013279463
Make sure your calculator is in degree mode.
This rounds to the nearest tenth to get a = 33.1 which is the approximate length of side BC.
Write and expression for the calculation add 9 to the product of 4 and 5
Answer:
5×4+9
Step-by-step explanation:
The product of something means to multiply, so you would multiply 5 and 4 together.
Then you would add 9 to that.
which value of x satisfies the equation below? 4x-7+25
Answer: =4x+18
Step-by-step explanation:
Let's simplify step-by-step.
4x−7+25
=4x+−7+25
Combine Like Terms:
=4x+−7+25
=(4x)+(−7+25)
=4x+18
Answer:
=4x+18
Which equation is NOT written in slope-intercept form?
Answer:
2x - 5 + 2y + 14 is not in slope intercept form
Step-by-step explanation:
Slope intercept form is y = mx + b
I multiply three positive integers that are greater than 1 and get 333. Find one of the numbers.
those who answer first will be marked brainliest !
Answer: 3, 37
Step-by-step explanation:
Divide by 3, divide by 3 again. 37 is a prime number, so it can't be divided again after that.
A box is made of wood with its external dimensions of 154 cm x 100 cm x 84 cm and thickness of 2 cm.
How much wood was used to make it?
Answer:
Step-by-step explanation:
volume of 154×100×84 box = 1,293,600 cm³
dimensions of airspace = (154-4) by (100-4) by (84-4) = 150 by 96 by 80
volume of airspace = 150×96×80 = 1,152,000 cm³
volume of wood used = 1,293,600 - 1,152,000 = 141,600 cm³
HEY CAN ANYONE PLS ANSWER DIS MATH PROBLEM!!!
there you go buddy -.-
ill give brainliest to who can answer
2/4 x 5/9 = 3.14
Answer:
if the x is for multiplication this is a false statement the true answer would be5/8 if the x is a variable then x would =11.304
Step-by-step explanation:
Answer:
Hey i know its been a long time and im sorry but i was kind of hoping you would come back on so we could talk again sometime
Step-by-step explanation:
x = 4y squared - 12
Work out the value of x when y=5
Answer:
0.0000000164
Step-by-step explanation:
x= 4y^-12
for,
y = 5
x = 4×5^-12
x = 4/5^12
x = 4/244,140,625
x = 0.0000000164
Match the vocabulary with the appropriate definition
Origin
Quadrant 111
(-; +)
Quadrant IV
(5)
Quadrant
(+,-)
Y Axis
Left to right (horizontal)
Quadrant 11
Up and down (vertical)
X Axis
1
(0,0)
please help me with this problem and explain 10-3y=12
Answer:
10-3y=12
or, -3y=12-10
or, -3y=2
or, y= 2/(-3)
or, y= -(2/3)
hope you got your answer! :)
In a sequence of numbers, a3=3, a4=7, a5=11, a6=15 a7=19.
Based on this information, which equation can be used to find the nth term in
the sequence?
Answer:
B, an = 4n - 9
Step-by-step explanation:
The sequence is for every time the exponent on a goes up one, the number that it equals to goes up by 4. So to find the nth term, we at 4 to n. I hope this helped! :)
There is a bag filled with 3 blue, 4 red and 5 green marbles.
A marble is taken at random from the bag, the colour is noted and then it is not replaced.
Another marble is taken at random.
What is the probability of getting exactly 1 green?
Answer:1/12
Step-by-step explanation:
Answer:
i don't know how to answer this question so ask someone else thanks I'm not helpful
Figure ABCD is a square. Find the
value of x.
5x 2
D
x + 10
x = [?]
Answer:
x=3
Step-by-step explanation:
Hey eveyone. Im 7th grade 13 years old. Whenever i am at school i always think people think i smell bad. I dont know if its true. I put deoderant on take a shower and EVERYTHING. I dont wanna smell bad. It might just be in my head. Plz respond.
Answer:Researchers say a psychiatric condition characterized by a person's mistaken belief that he or she smells bad is vastly under-recognized. Called olfactory reference syndrome, the condition is "probably very common," says Katharine Phillips, MD, of Rhode Island Hospital in Providence. so you might just be thinking thst in your head man. just shower, brush teeth etc... or this could be a possibility...What causes the unpleasant smell is the bacteria that build up on your sweaty skin and react with sweat and oils to grow and multiply when sweat reacts with bacteria on the skin. These bacteria break down proteins and fatty acids, causing body odor in the process.
Step-by-step explanation:
what complex numbers graph is shown?
Answer:
D.
Step-by-step explanation:
Took the test
what i 50% out of 8 PLSS NEED HELP
Answer:
4
Step-by-step explanation:
Answer:
4 because half of 8 is 4
EFGH is a square with diagonals EG and HF that intersects at O. What is the measure of m angle HOG
Answer:
show the whole pic of explanation
A phone plan costs $10 per month, plus $0.03 per text message. John wants his phone bill to be less than $40, before taxes. What is the maximum number of text messages John can send?
Answer:
100
Step-by-step explanation:
Find the sum of 0.333......and 0.444....
Answer:
0.777......
Step-by-step explanation:
0.333...... + 0.444......
= 0.777......
Hope it helps :)
Please mark my answer as the brainliest
Step-by-step explanation:
The sum of 0.333.... and 0.444... is 0.777......
arrange the variables so that they are on the same sides: -5w - 9 = 3w + 7
Answer:
-8w=16
Step-by-step explanation:
-5w-9+9 = 3w+7+9
-5w=3w+16
-5w-3w=3w-3w+16
-8w=16
To solve:
-8w/-8=16/-8
w = -2
this is so confusing someone please help me out
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step 1 is wrong . The 1st step should be 15² - 9² = c² .
Answer: step A
Step-by-step explanation:
The Pythagorean theorem is a^2+b^2=c^2, where c is always the hypotenuse (the longest side of the triangle). Step A is written as 9^2(thats the a value squared)+15^2(which is the hypotenuse value squared)=c^2. It should be: 9^2+b^2=15^2