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2 years ago

11

I am a teacher and need to proofread my student's work. But it makes it quite hard when I need to watch a 30-second ad to make s

ure their answers are right. Is there any way I can bypass this without having to pay because this is a huge inconvenience?

1 answer:

zalisa [80]2 years ago

7 0

Answer:i dont think so..

Step-by-step explanation:

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The planet Mars could be a future destination for the U.S. space program. Assume that Mars is a perfect sphere. Its surface area

Arlecino [84]

Surface area of a sphere is 4 times pi timers radius^2
aprox pi=3.14

so surface area=145,000,000

145,000,000=4 times 3.14 times rdaius^2
145,000,000=12.56 times radius^2
divide both sdies by 12.56
11544585.987=r^2
square root both sides
3397.73=radius

round to the hundreds
3397 rounded to the hundreds
3400

the answer is D 3,4000 km

4 0

3 years ago

Solve 3x+3/5>=4/5<br><br> Answer:

Sedbober [7]

Answer:

=0

Step-by-step explanation:

Solution:

3x+3/5 = 0

3•x+3/5 = 0

15x = -3

x = -1/

5

= -0.2

7 0

2 years ago

Drag the tiles to the boxes to form correct pairs

sergiy2304 [10]

$( - \frac{3}{4} )( \frac{7}{8} )$

$= \frac{ - 3}{4} \times \frac{7}{8}$

$= \frac{ - 21}{32}$

_______________________________________

$( \frac{2}{3} )( - 4)(9)$

$= \frac{2}{3} \times - 4 \times 9$

$= \frac{ - 72}{3}$

$= - 24$

_______________________________________

$( \frac{5}{16} )( - 2)( - 4)( - \frac{4}{5} )$

$= \frac{5}{16} \times - 2 \times - 4 \times \frac{ - 4}{5}$

$= \frac{ - 160}{80}$

$= \frac{ - 16}{8}$

$= - 2$

_______________________________________

$(2 \frac{3}{5} )( \frac{7}{9} )$

$= \frac{13}{5} \times \frac{7}{9}$

$= \frac{91}{45}$

3 0

3 years ago

Can you help pls I need it it hard...

Daniel [21]

9. 1/18

10. 1/18

<u>Here is how I got my answer for 9:</u>

Step 1: Simply $9/54$ to $1/6$ . Which leaves us with $1/6$ - $1/9$

Step 2: Find the least common denominator, which is 18.

Step 3: Make the denominators the same as the least common denominator. By multiplying $6*3$ and $9*2$ . Which leaves us with $3/18$ - $2/18$ .

Step 4: Subtract 3 and two, giving you your answer: $1/18$

<u>Here is how I got my answer for 10:</u>

Step 1: Simplify $6/12$ to $1/2$ . Which leaves us with $1/2$ - $4/9$

Step 2: Find the least common denominator, which is 18.

Step 3: Make the denominators the same as the least common denominator by multiplying $2*9$ and $9*2$ . Which leaves us with $9/18 - 8/18$ .

Step 4: Subtract 9 and 8, giving you your answer: $1/18$

3 0

3 years ago

Read 2 more answers

Solve quadratic equation (x-3)^2+5=14

laiz [17]

Answer:

the Answer is 14=5+2^(3-x)

Step-by-step explanation:

6 0

3 years ago