I need the answer to all of these with work shown. Thanks!!

Answers

Answer 1

Answer:

This is for question 3a.

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Jeremy drew a polygon with four right angles and four sides with the same length. Name all the polygons that he could have drawn.

Answers

a square. Only a square could have 4 right angles and 4 sides the same length

The sum of 5 and a number x

Answers

5+x that is the answer

The sum of 5 and a number x
Answer: 5 + x

What is the sum of these decimals 310.3 + 943.8 + 391.4

Answers

Answer: 1645.5

Step-by-step explanation:

310.3+943.8+391.4= 1,645.5

Last weekend 1270 students participated in the music festival. Write 1270 in expanded form using exponents

Answers

The exponent form of students participating in the music festival is

1×10³ + 2×10² + 7×10¹.

What is the standard decimal form of numbers?

The standard decimal form of numbers is written in base 10 as there are 10 different numbers from 0 to 9.

Each digit has a face value and a place value.

Given, Last weekend 1270 students participated in the music festival.

Now, 1270 in exponent form is as follows,

1270 = 1000 + 200 + 70.

1270 = 1×1000 + 2×100 + 7×`0.

1270 = 1×10³ + 2×10² + 7×10¹.

learn more about standardand exponent form of numbers here :

brainly.com/question/29000730

#SPJ2

1270= 1 x $10^3$ + 2 x $10^2$ + 7 x $10^1$

Hope this helps.

Solve kx + 12 = 3kx for x.

Answers

Answer: x=6/k

Step-by-step explanation:

kx + 12 = 3kx and subtract k from both sides

12=3kx-kx then simplify

12=2kx, now divide both sides by two

12/2=kx simplify again

6=kx divide next

6/k=x finally, switch sides to get x=6/k

Hope this helps, have a BLESSED and wonderful day, as well as a safe one!

-Cutiepatutie ☺❀❤

$kx+12=3kx \n12=2kx \nx=(12)/(2k) \nx=(6)/(k)$

Hope this helps.

Why is 85 a prime number

Answers

85 is a composite number because 17×5=85

85 is NOT a prime number because all prime numbers is a whole number greater than 1.its mosly 1 and its self

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Emily spent 1/2 of her money at the grocery store.Then, she spent 1/2 of what was left at the bakery. Next, at the music store, she spent 1/2 of what is left on a CD that was on sale. She spent the remainder $6.00 on lunch at the diner. find how much money Emily start with?

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What is 4/10 in simplest form