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jenyasd209 [6]
3 years ago
9

Graph the Line y=4x−3

Mathematics
1 answer:
vladimir1956 [14]3 years ago
5 0
Do U have a picture???
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I need Help please! Evaluate the "expression" for a= -1, b= 9 and c= -2. b^2–4ac.
anyanavicka [17]

Answer:

-170

Step-by-step explanation:

- 2(9)^2-4(-1)(-2)

-2(81)-4(2)

-162-8

-170

4 0
3 years ago
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A polling organization contacts 1338 adult men who are 40 to 60 years of age and live in the United States and asks whether or n
MAVERICK [17]

Answer:

The population is all the adult men who are 40 to 60 years of age and live in the United Stades.

Step-by-step explanation:

The population is all the adult men who are 40 to 60 years of age and live in the United Stades.

The 1338 are the sample, and the study wants to find the proportion of all these adults who had seen their family doctor. Since 1338 is a large sample size, this proportion can be extended to all the adult men who are 40 to 60 years of age and live in the United Stades.

8 0
3 years ago
Suppose someone tells you that she has a triangle with sides having lengths 2.6, 8.1, and 8.6. Is this a right triangle? Why or
Elodia [21]
First you check for Pythagoras'  Theorem.

Is  8.6² = 8.1²  + 2.6²  ? 
  
8.1²  + 2.6² = 65.61 + 6.76 = 72.37
8.6² =  73.96

8.1²  + 2.6²  ≠ 8.6² 

Since Pythagoras' Theorem is not satisfied it is not a right angled triangle.

The longest side is 8.6,  let's find the angle facing the longest side 8.6.

By cosine formula  CosA =  (b² + c² - a²) / (2bc)

CosA =  (2.6² + 8.1² - 8.6²) / (2*2.6*8.1) = -1.59/42.12 = -0.0377

A = Cos inverse (-0.0377) = 92.1 degrees

So there is  an angle is greater than 90 degrees.
8 0
3 years ago
Question 31 (5 points) Find the area of the shaded portion if we know the outer circle has a diameter of 4 m and the inner circl
Vadim26 [7]

The shaded portion area A corresponds to the area Ao of the outer circle minus the area Ai of the inner circle:

A = Ao - Ai

Also, the area of each circle of radius r is given by:

π r²

where the radius r is half the diameter d.

So, using r = d/2 in the above formula, we obtain:

π r² = π (d/2)² = (π/4) d²

Now, replacing each area with the corresponding diameter, we find:

A = Ao - Ai

= (π/4) 4² - (π/4) 1.5²

= (π/4) (4² - 1.5²)

= (π/4) (16 - 2.25)

= (π/4) (13.75)

≅ 10.799

Rounding the result to one decimal place, we find the answer:

10.8 m²

5 0
1 year ago
What is 4 to the third power? Plzzzzzzz help meeeeee!!!!
Evgesh-ka [11]

Answer:

64

Step-by-step explanation:

4³ = 4 · 4 · 4

4 · 4 · 4

16 · 4

64

6 0
3 years ago
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