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Oduvanchick [21]
2 years ago
10

Isolate the literal equation

Mathematics
2 answers:
gavmur [86]2 years ago
6 0

h = 2a/b

option b

hope it helps...!!!!

steposvetlana [31]2 years ago
6 0

Answer:

b.  h = 2A/b.

Step-by-step explanation:

A = 1/2 bh

Multiply through by 2:

2A = bh

Divide both sides by b:

h = 2A/b.

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A radioactive material has a half-life of 15 days if you start with 160 mg after how long will they be 5mg left?
SOVA2 [1]

Answer:

  75 days

Step-by-step explanation:

The multiplier each day is ...

  (1/2)^(t/15)

Then we want to find t such that ...

  5 = 160·(1/2)^(t/15) . . . . . . 5 mg are left after t days

  5/160 = (1/2)^(t/15) . . . . . . divide by 160

  1/32 = (1/2)^5 = (1/2)^(t/15) . . . . rewrite the left side

Equating exponents (equivalent to taking logs), we get ...

  5 = t/15

  5·15 = 75 = t . . . . . multiply by 15 to find t

After 75 days, there will be 5 mg left.

3 0
4 years ago
Find x. Round your answer to the nearest tenth of a degree.
anygoal [31]

Answer:

60.9º

Step-by-step explanation:

tan = opp/adj

tanX = 45/25

X = arctan 45/25

use calculator

X = 60.945395900922855

Rounded

60.9º

6 0
3 years ago
14+3n=8n-3(n-4) foes this have an answer, no, or infinite solution
Marrrta [24]
One solution. One. Ask me if you have any questions

8 0
3 years ago
Read 2 more answers
To make concrete it take 8 parts crushed gravel, 7 parts water and 5 parts cement mix. A worker needs to make 220 kg of concrete
Romashka-Z-Leto [24]

A complete load of concrete = 8 parts gravel + 7 parts water + 5 parts cement.

Total number of parts in every load = 8 + 7 + 5 = 20 parts

If total load = 220 kg, then       20 parts = 220 kg

Divide each side by  20 :             1 part = 11 kg

gravel   = 8 parts = 8 x 11 kg = <em>88 kg</em>
water    = 7 parts = 7 x 11 kg = <em>77 kg</em>
cement = 5 parts = 5 x 11 kg = <em>55 kg</em>

<u>Check:</u>    88 + 77 + 55 = 220         yay !


4 0
3 years ago
in abc the measure of angle a is 2x+3, the measure of b is 4x+2, the measure of c is 2x-1. What are the measures of the angles?
Mama L [17]
The measures of the angles in a triangle add up to 180°.
2x+3+4x+2+2x-1=180 \\&#10;8x+4=180 \ \ \ |-4 \\&#10;8x=176 \ \ \ |\div 8 \\&#10;x=22 \\ \\&#10;2x+3=2 \times 22+3=44+3=47 \\&#10;4x+2=4 \times 22+2=88+2=90 \\&#10;2x-1=2 \times 22-1=44-1=43

The measures of the angles are 43°, 47° and 90°.
5 0
3 years ago
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