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3 years ago

Which expression is equivalent to (5^-2)(5^-1) A. -1/125 B. -1/5 C. 1/125 D. 1/5

Mathematics

1 answer:

n200080 [17]3 years ago

3 0

Answer:

1/125

Step-by-step explanation:

(5^-2)(5^-1) = 5^-3=1/5^3=1/125

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√ 19 + 6^2 ÷ 7.2^2 I need help ASAP

kumpel [21]

Answer:

0.143059384

Step-by-step explanation:

=> $\frac{\sqrt{19+6^2} }{7.2^2}$

=> $\frac{\sqrt{19+36} }{51.84}$

=> $\frac{\sqrt{55} }{51.84}$

=> $\frac{7.416}{51.84}$

=> 0.143059384

5 0

3 years ago

Read 2 more answers

In 2007, there were more than 8.14 million cars for sale. Over the next 3 years, the number of cars decreased by 23%. Write an e

Nina [5.8K]

Answer:

c = 8.14 million×(0.9166)^t

4.83 million

Step-by-step explanation:

Data:

t = y - 2007

c₀ = 8.14 million

c₃ = 23 % less than c₁

Part 1. Calculate c₃

c₃ = c₀(1 - 0.23) = 0.77c₀

Part 2. Calculate r

c₃ = c₀r^t

0.77c₀ = c₀r³

0.77 = r³ Divided each side by c₀

r = 0.9166 Took the cube root of each side

The explicit decay model is c = 8.14 million×(0.9166)^t

Part 3. Prediction

t = 2013 - 2007 = 6

c = c₀r^t = 8.14 million×(0.9166)⁶ = 8.14 million × 0.5929 = 4.83 million

The model predicts that there will be 4.83 million cars for sale in 2013.

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3 years ago

According to research, how does the public view children and teens with mental health disorders? Group of answer choices A stati

Liono4ka [1.6K]

According to research, the public views children and teens with mental health disorders as over 1,300 U.S. adults believe children with depression are prone to violence

Answer: Option B

<u>Explanation:</u>

Most Americans trust that the people count has increased with mental health disorders in the last 20 years (69 %) and that is a major health issue in the US (89 %) according to the results of survey. They believe that mental health disorders are caused by physical disorders (like brain’s chemical imbalance or due to environmental criteria (daily stress or alcoholism / abuse of drugs).

Over nine out of ten respondents cited those factors as typical causes for mental health disorders. When asked about the most common causes of this, nearly 27 % reported chemical brain imbalances and stress in their daily lives, and 20 % reported alcohol or drug abuse.

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3 years ago

If you do all you'll get brainliest

Flura [38]

The two equations:
Daisy’s: y = 4x + 14
Donald’s: y= 2x + 26

The point of intersection is (6, 38)
This point refers to how many of passengers it will take for both equations to have have the same cost output.

Daisy’s deal is better if you have less than 6 passengers. We can tell because the line for the equation is lower than Donald’s line. Donald’d deal will be better if you have more than 6 passengers since the line is lower than daisy’s deal.