MATHEMATICS HIGH SCHOOL

Write the following series in sigma notation.
7+11+15+19+23

Answers

Answer 1
Answer: This is the answer this is the answer

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Felipe has saved $625. He is starting a part-time job that pays him $150 a week, and he plans to save all of the money he earns. Which algebraic expression represents Felipe's total savings after x weeks? A.625x + 125 B.775x C.150x + 625 D.125x - 650
$.46 is what fraction of a dollar
If the volume of a cube is 27 cubic meters, find the surface area of the cube
Can someone please help

Help ASAP i will give brainliest

Answers

Answer: Point D

Step-by-step explanation:

Answer:

Point D

Hope it helps! <3

If two lines intersect, what angles are congruent?opposite angles
adjacent angles
supplementary angles
vertical angles

Answers

Answer= Opposite Angles

The opposite angles of intersecting lines are congruent.
if two lines intersect they would be opposite angles 

What answer describes this sequence? 99, 89.9, 78.8, 68.7,...

a) Neither arithmetic nor geometric
b) Both arithmetic and geometric
c) Arithmetic
d) Geometric

Answers

a) Neither arithmetic nor geometric
a) Neither arithmetic nor Geometric

Explanation:
Since 99-89.9= 9.1, and 89.9 - 78.8 = 11.1, the sequence is not arithmetic.
Like wise 89.9/99=0.908 and  78.8/89.9 = 0.876 makes it not a geomtric sequence

CAN someone help me with this pls
WILL GIVE BRAINLIEST

Answers

Answer:

the answer would be $394.00

Step-by-step explanation: Brainliest please

because you divide 187.15 by 19 and that will be what she makes for zero than you multiply 9.85 by 40 then you get 394

Identify the solutions of the system of equations, if any
x+5y=6
6x-10y=12

Answers

\left \{ {{x+5y=6} \ \ |2\atop {6x-10y=12}} \right. \n\n\n \left \{ {{2x+10y=12} \atop {6x-10y=12}} \right. \n ======== \n\n 8x=24 \ \ \ |:8 \n\n \boxed{x=3} \n\n x+5y=6 \n\n 5y=6-x \n\n y=(6-x)/(5) \n\n y=(6-3)/(5) \n\n \boxed{y=(3)/(5)}
so assuming x and y remain constant, we can make one of the place holders negative and add the equations together to cancel each other out so

we can cancel out the y terms since 5 is close to 10
(x+5y=6) times 2=2x+10y=12
add this to 6x-10y=12
2x+6x+10y-10y=12+12
8x=24
divide both sides by 8
x=3
subsitute into first equation
x+5y=6
3+5y=6
5y=3
y=3/5
x=3

Find the term named in the problem.
-21, - 13, -5, 3, ...
Find a23

Answers

a(n)=a(1)+(n-1)×d

a(23)=-21+(23-1)×8

a(23)=-21+(22)×8

a(23)=-21+176

a(23)=155

And we're done....

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