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Reptile [31]
3 years ago
7

HELP!!!!!14. 4e2x – 3 = 12 solve for x leave explination will mark brainliest

Mathematics
1 answer:
Ivan3 years ago
5 0
I will help you but I don't understand the equation. Can you please write it differently. Is it 4^2 x-3=12 or 4^2x - 3 =12
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Which of the following is equivalent to (8 – 5) ÷ 23 ?
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(8 - 5) ÷ 23

= \frac{(8 - 5)}{23}

= \frac{3}{23}
4 0
3 years ago
Half an hour after leaving her house Beverly was 20 miles from home. At this point she merged onto the highway and was traveling
N76 [4]

Answer:

1. 45.71 miles

2. 10 miles

3. 89.43 miles

4. 0.79 hr

5. 0.025 hr

Step-by-step explanation:

speed = distance/time

After 4 hrs Beverly was 200 miles from home , however she had spent 0.5hr travelling for 20 miles prior to getting to the highway.

Therefore;

Constant speed before Highway = 20/0.5 = 40 miles/hr

Constant speed at Highway = \frac{(200-20)}{(4-0.5)} = 51.43 miles/hr

1. in 1 hr beverly will have travelled;

⇒ (20 miles in 0.5 hr ) + (0.5 hr  at speed 51.43 miles/hr)

⇒ 20 + (0.5 x 51.43) = 45.71 miles

2. In 0.25 hr beverly had not reached the highway

⇒ distance = speed x time

⇒ distance = 40 x 0.25 = 10 miles

3. in 1.85 hrs beverly will have travvelld;

⇒ (20 miles in 0.5 hr ) + (1.35 hr at speed 51.43 miles/hr)

⇒ 20 + 69.43 = 89.43 miles

4. Time taken to get to 35 miles

⇒ (20 miles in 0.5 hr ) + (15 miles  at speed 51.43 miles/hr)

⇒ 0.5hr + (15/51.43) hr = 0.79 hr

5. Time taken to travel 1 mile

 ⇒ time = distance / speed = 1 mile  / 40 miles/hr

⇒ time = 0.025 hr

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3 years ago
What is the standard value of 110 units​
Alexeev081 [22]

Answer:

Hundreds.

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There are 3 digits. And the decimal is after the value of 110.

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A 7th grade teacher at a local middle school wants to know which
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2 years ago
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