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Fofino [41]
2 years ago
7

What is the simplified form of this expression? (-3x2 + 4x) + (2x2 − x − 11)

Mathematics
1 answer:
satela [25.4K]2 years ago
4 0

Answer:

(-3x2+ 4x) +(2x2-x-11)=− x2+3x-11

step-by-step explanation:

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Deborah hikes due south for 3 miles. She then turns due west and hikes 4 miles. What is the shortest distance between the starti
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Answer:

  5 miles

Step-by-step explanation:

The two legs of Deborah's hike form the right-angle legs of a right triangle. The shortest distance is then the hypotenuse of that triangle, found using the Pythagorean theorem.

  d^2 = 3^2 + 4^2 = 9 +16 = 25

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Deborah ends 5 miles from her start.

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2 years ago
I need help with this
VashaNatasha [74]
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2 years ago
An investigator reviewed the medical records of 200 children seen for care at Boston Medical Center in the past year who were be
lisov135 [29]

Answer:

cohort study

Step-by-step explanation:

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The objective of this experiment is to test the causes of the disease asthma and to find the risk factors and environment causing this disease.

So this cannot come under randomized control nor case control.

Cross over study is to put to two different environments two groups and study.  But here nothing is influenced actual environments are studied

Hence this comes under cohort study

3 0
2 years ago
6. Find the missing value. Show your work.
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1. 45 degree angle. 2. 20* same as the bottom do to the top.
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3 years ago
Si el radio de un circulo es de 3 pulgadas. cual es el area del circulo?<br>​
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Answer:

I don’t know

Step-by-step explanation:

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