There are about 3×1011 stars in our galaxy and about 100 billion galaxies in the observable universe. Suppose every galaxy has as many stars as ours. How many stars are in the observable universe? Write in scientific notation.

The number of stars in the observable universe is; 3.033 × 10¹⁴

Since there are about 3 × 1011 stars in our galaxy; we can rewrite that to be;

However, there are about 100 billion galaxies in the observable universe.

We can rewrite that in scientific notation form so that we have;

Ultimately, since our galaxy is one of the 10¹¹ observable galaxies in the universe; the number of stars in the observable universe is;

By the laws of indices;

Therefore, the number of stars in the observable universe is; 3.033 × 10¹⁴.

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What is the value of x in the equation x*3 = 27 512 ?

I NEED HELP NOW 50 POINTS

Graph the line through 2,3 that is Parallel to the line with the equation 3x-y=2

Two unidentified flying discs are detected by a receiver. The angle of elevation from the receiver to each disc is 39.48 degree. The discs are hovering at a direct distance of 826m and 1.296km from the receiver. Find the difference in height between the two unidentified flying discs, to the nearest meter.

1. What type of function is the following graph?
a. Exponential
B. Quadratic
C. Linear
d. Absolute Value

A math test had 26 questions. The questions were either true/false or multiple choice. The true/false questions were worth 2 points each and the multiple choice were worth 5 points each. If the test is worth 100 points, how many of each type of question are included on the test?

Jenny wants to buy a new dress for her first school dance she barrows $25.63 from her sister to help pay for the dress then Jenny earns $16.33 helping her dad organize his home office if she gives all the earnings to her sister Jenny will still owe her sister $

100 POINTS!!!!!!!!!!! ( I NEED FAST ANSWERS ) Which of the following functions model the data given in the table below?
х
2
3
4
5
6 y
-5
-7
-9
-11
-13

The distance between the Sun and each planet in our solar system varies because the planets travel in elliptical (oval) orbits around the Sun rather than completely circular ones.

Here is a table of the average distance and the variation in the distance for the five innermost planets in our solar system:

Average Distance and Variation
Planet Name Average Distance Variation
Mercury 36.0 million miles 7.39 million miles
Venus 67.2 million miles 0.43 million miles
Earth 93.0 million miles 1.55 million miles
Mars 142 million miles 13.2 million miles
Jupiter 484 million miles 23.2 million miles


"Average distance" means the mean distance that planet is from the sun over the course of its orbit, and "variation" means how far it varies from that mean. For example, if a planet had an average distance of 5 miles and a variation of one mile, it would have distances between 4 and 6 miles at different times.

a) Write and solve an inequality to represent the range of distances that can occur between the Sun and one of the planets from the table (your choice). Show your steps/process.

b) Why is this best represented as an inequality rather than an equation? Explain in at least 3 sentences.

Simplify this expression. 17 - 12x - 18 - 5x = ??​

What number(s) have the absolute value of 7? Why? (Must explain to receive credit)

CAN SOME ONE HELP ME ASAP

Someone help me please ill mark brainliest

A jar contains 50 coins, all either 2 cents or 5 cents. The total value of the coins is $1.87.
How many 2 cents coins are there?

A rectangular room is covered in 5 12 square feet of carpet. If the length of the room is 16 feet,
what is the width of the room?

write in standard form 9 times 100

HELP ME PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! :3
I have to do what the image below says but I don't know how to write it:,)

(5.31 x 103) – (2.8 x 103)

[tex]\frac{2}{5} x+\frac{1}{2} =\frac{3}{4}[/tex]

is 800 cm greater than 8 cm

Which ordered pair or pairs are solutions to the equation? Select ALL that apply.
Y-1= 1/6(x+5)


A. (1,2)

B.(1,-2)

C.(5,0)

D.(5,6)

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Find (x - 3)(2x - 1) using the table of products. Write your answer in standard form.

The basketball gym at Dustin's school was built in the 1940s and needs a lot of repairs. So, the school is asking families for donations to build a new gym. Dustin convinced some local businesses to match a fraction of the families' donations. There is a proportional relationship between the amount of money a family donates (in dollars), x, and the matching contribution (in dollars) from local businesses, y. When a family donates $12, the businesses contribute $9. Write the equation for the relationship between x and y.

Colin and his friends are celebrating Colin's birthday at Adventure Zone, which has
trampolines, mini golf, laser tag, and an arcade. Colin's mom gives 16 arcade tokens to each
kid at the party. In all, she gives out 112 tokens.
Use an equation to find the number of kids at Colin's party.
kids
Answer is 7 I promise

g + 10 = 3g

Translate into a sentence !! HELPPPPP

Simplify by dividing -5/8 divided by -3/4

How many solutions are there for the system of equations shown on the graph?

A. No solution
B. One solution
C. Two solutions
D. Infinitely many solutions

please help asap, the question is in photo

Given that BD is the median of ▵ABC, and that ▵ABC is isosceles,
congruence postulate SSS can be used to prove which of the following?

A. ∠BAD = 45°
B. ▵BAD ≅ ▵BCD
C. ▵ABC is an equilateral triangle
D. ▵ABC ≅ ▵BCD