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2 years ago

13

Write each expression in scientific notation. Put your answer for EACH part in the text box. You should have 5 answers for this

question.
A) 0.04

B) 0.072

C) 0.0000325

D) 0.003

E) 0.23

please help me

1 answer:

Zolol [24]2 years ago

7 0

Answer:

A) 4 × 10^-2

B) 7.2 × 10^-2

C) 3.25 × 10^-5

D) 3 × 10^-3

E) 2.3 × 10^-1

Step-by-step explanation:

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Answer:

its 8

Step-by-step explanation:

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2 years ago

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Determine the surface area of the shape below.

aev [14]

Try this option:

1. the required surface area consists of: A=A₁+A₂+A₃, where

2. A₁=pi*r*l - the surface of the cone:

pi=3.14; r=4/2=2 cm; l=sqrt(6²+2²)=2√10≈6.33 (cm);

A₁=3.14*2*6.33=39.74 (cm²).

3. A₂=a²-pi*r² - the surface of the top plane:

A₂=36-3.14*4=23.43 (cm²).

4. A₃=5*a² - the surface of the five planes of the given cube:

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5. the required area:

A=39.74+23.43+180=243.17 (cm²).

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<u>Answer: 243.17</u>

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3 years ago

The faces of a fair 6 - sided cube are numbered 1 through 6. What is the probability that a 2 will land face up on the next roll

Harlamova29_29 [7]

Answer:

You will have a 1/6 probability of getting a 2 that will land face up on the next roll.

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There is only one two on the cube, which means you will have 1 chance out of 6 of getting a 2.

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2 years ago

Answer pls lol. also please make sure to explain it!

o-na [289]

Answer:

He made 5 2-pointers and 4 3-pointers

Step-by-step explanation:

Let x = number of 2-pointers he scored.

Let y = number of 3 pointers he scored.

The total number of shots he made is x + y, and it it equals 9.

The first equation is

x + y = 9

The total number of points he scored on 2-pointers is 2x. The total number of points he scored on 3-pointers is 3y. The total number of points he scored with 2-pointers and 3-pointers is 2x + 3y. It equals 22.

The second equation is

2x + 3y = 22

We have a system of 2 equations.

x + y = 9

2x + 3y = 22

We will use the substitution method.

Solve the first equation for x.

x = 9 - y

Now substitute 9 - y in for x in the second equation.

2x + 3y = 22

2(9 - y) + 3y = 22

18 - 2y + 3y = 22

y + 18 = 22

y = 4

Now we substitute 4 for y in the first equation and solve for x.

x + y = 9

x + 4 = 9

x = 5

Answer: He made 5 2-pointers and 4 3-pointers

Check:

5 2-pointers and 4 3-popinters are a total of 9 shots, so the number of shots is correct.

Now we check the number of points.

5 * 2 + 4 * 3 = 10 + 12 = 22

22 points is the correct total.

Our answer is correct.

8 0

2 years ago

Perform the following division:

Radda [10]

Hey!

Alright, the first step to solving this division problem would be to convert the mixed fraction into a simple fraction. To do that, we'll multiply the denominator by the whole number and then add that total to the numerator.

<em>Original Fraction :</em>
$3 \frac{3}{4}$

<em>New Fraction {Changed by Conversion} :</em>
$\frac{15}{4}$

Now that we've successfully done that we'll have to change the equation.

<em>Old Equation :</em>
$\frac{15}{4}$ ÷ $\frac{2}{8}$ = ?

<em>New Equation {Changed by Flipping the Second Fraction and the Symbol} :</em>
$\frac{15}{4}$ · $\frac{8}{2}$ = ?

Now we multiply straight across.

<em>Old Equation :</em>
$\frac{15}{4}$ · $\frac{8}{2}$ = ?

<em>Solved :</em>
$\frac{120}{8}$

Almost done!
Now we have to simplify the fraction.

<em>Old Fraction :</em>
$\frac{120}{8}$

<em>New Fraction {Changed by Simplification} :</em>
$\frac{15}{1}$

Now just convert it to a whole number by removing the fraction line and the number, and that's it!

<span><em>So, $3 \frac{3}{4}$ ÷ $\frac{2}{8}$ equals</em></span> 15.

Hope this helps!

- Lindsey Frazier ♥

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