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3 years ago

3.1 × 10^-4 in standard form

Mathematics

1 answer:

podryga [215]3 years ago

4 0

Answer:

Its 0.00031

Step-by-step explanation:

You just move your decimal the number of exponent. In your case -4 so you would move it to the left because it's a negative and move it 4 spaces.

Hope this helps!

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A local tree farm is donating 50 trees. The students will plant some of the trees at the school and the rest at the library.

Alex17521 [72]

Answer:

Step-by-step explanation:

First you know they have 50 trees. Then, you know 3 of 25 will die.

25*2=50. 3*2=6.

8 0

2 years ago

Find 93 • 87 using mental math.

bagirrra123 [75]

Okay so start with multiplying 93 * 7

So 3 x 7= 21

9 X 7 +63, carry the 2 = 651

Then 8 x 93
Remember that first is a zero.
8 X 3= 24
8 X 9= 72, carry the 2= 74
So that is 7440
Now
0651
+7440
8091
And that's the answer

7 0

3 years ago

Read 2 more answers

Evaluate. 102+6⋅7+8 70142150190

Aloiza [94]

Hi.

102+6(7)+8 (your equation)
102+ 42+ 8 (since the order is PEMDAS, multiplication has to go first. 6x7=42
144 + 8 (since you go left to right, 102 +42 has to be 1st. Answer= 144)
152 (now the only thing left is 144 + 8, so do that. Answer= 152.)

Since that's the last step, 152 will be your answer.

Hoped I helped and if you need anymore you could always ask me~

-Dawn

6 0

3 years ago

Read 2 more answers

Hello! Please Help Its just one simple Question ^^

Flura [38]

$\\ \sf\longmapsto f(x)=112-kx$

f(-3)=121

Put -3 in f(x)

$\\ \sf\longmapsto f(-3)=121$

$\\ \sf\longmapsto 112-k(-3)=121$

$\\ \sf\longmapsto 112+3k=121$

$\\ \sf\longmapsto 3k=9$

$\\ \sf\longmapsto k=3$

4 0

2 years ago

Cherie accepted a job through an employment agency. The job pays $1,100 a week. The agency charges 30% of her first 4 weeks pay.

Leto [7]

If this job pays 1100 a week, in four weeks Cherie would make 4400. If she’s giving a 30% cut to the agency for four weeks, she’d be giving 330 of every weeks paycheck. At the end of those four weeks, she’d end up giving $1,320 to the agency.

5 0

3 years ago

Read 2 more answers