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soldi70 [24.7K]
3 years ago
14

Which shows the expression below in simplified form?

Mathematics
1 answer:
statuscvo [17]3 years ago
5 0

Answer:

B. 9x10^4

Step-by-step explanation:

\frac{4.5 \times  {10}^{8} }{5 \times  {10}^{3} }  \\  = 0.9 \times  {10}^{8 - 3}  \\  = 0.9 \times  {10}^{5}  \\  = 9 \times  {10}^{4}

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6) The sum of nine and half a number is thirty-three.
qaws [65]

Answer:

Hey there!

9+x/2=33

x/2=24

x=48

The number is 48

Let me know if this helps :)

8 0
2 years ago
630<br> Solve for &lt;2.<br> *2 = [?]°<br> 142<br> 57°123°<br> please explain as well
AlexFokin [52]

Step-by-step explanation:

the total angles in the triangle are 180°

so,

63° + 57° + ∠2 = 180°

120° + ∠2 = 180°

∠2 = 180° - 120°

∠2 = 60°

<h3>#CMIIW</h3>

7 0
2 years ago
Anybody know how I can get better at algebra 1, because I'm struggling​
IrinaK [193]

Answer:

Step-by-step explanation:

Know Your Arithmetic

Remember PEMDAS

Get Positively Comfortable with Negative Numbers

Show Your Work

Don't Let the Letters Scare You

Be Sure to Answer the Right Question

Work Practice Problems

Calculator

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3 0
2 years ago
In three hours, manufacturer z can make b ball bearings. manufacturer y can make b ball bearings in 4 hours. manufacturer x can
nekit [7.7K]
Each hour,
x makes b/6 bearings
y makes b/4 bearings
z makes b/3 bearings

Together, each hour, x, y and z together make
b/6+b/4+b/3=b(1/6+1/4+1/3)=b(2/12+3/12+4/12)=b(3/4)=3b/4 bearings.

Time to make b bearings =
b/(3b/4)=4/3 hours = 1 hour 20 minutes.

4 0
3 years ago
If n =270 and (p-hat) =0.43, find the margin of error at a 99% confidence level.. give answer to 3 decimals
Troyanec [42]

Answer:

0.078

Step-by-step explanation:

Margin of error = z√(p(1-p)/n)

Given

p-hat = 0.43

n = 270

z at 99% confidence interval = 2.576

Substitute

MOE = 2.576√0.43(1-0.43)/270

MOE = 2.576√0.43*0.57/270

MOE = 2.576√0.2451/270

MOE = 2.576*0.030129

MOE = 0.078

Hence the margin og error is 0.078

7 0
2 years ago
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