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3 years ago

Select the scenarios that will result in a positive slope. Select all that apply.

Mathematics

2 answers:

34kurt3 years ago

6 0

Answer:

Step-by-step explanation:

because it'll have positive x and y intercepts

dimulka [17.4K]3 years ago

6 0

The answer is A because if both intercepts are positive, that means the slope will be positive.

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Which of the following descriptions represent the transformation shown in the image? Part 3b

Igoryamba

Answer: d) none of the above

Step-by-step explanation:

Start at Black Triangle: B = (0, -4) C = (4, -1) D = (2, -5)

End up at Red Triangle: B = (2, 0) C = (-2, 3) D = (0, -1)

Rotation of 180°: (x, y) → (-x, -y)

Reflection across y-axis: (x, y) → ( -x, y)

Reflection across x-axis: (x, y) → (x, -y)

Reflection across x=1: (x, y) → (2 - x, y)

$a) \\\begin{array}{ccc}\qquad \text{(x, y)}&\text{Rotate 180}^o&\text{reflect across y-axis}\\B:\ (0, -4)&(0, 4)&(0,4)\\C: (4, -1)&(-4,1)&(4,1)\\D: (2, -5)&(-2,5)&(2,5)\end{array}$

$b) \\\begin{array}{ccc}\qquad \text{(x, y)}&\text{Rotate 180}^o&\text{reflect across x = 1}\\B:\ (0, -4)&(0, 4)&(2,4)\\C: (4, -1)&(-4,1)&(6,1)\\D: (2, -5)&(-2,5)&(4,5)\end{array}$

$c) \\\begin{array}{ccc}\qquad \text{(x, y)}&\text{Rotate 180}^o&\text{reflect across x-axis}\\B:\ (0, -4)&(0, 4)&(0,-4)\\C: (4, -1)&(-4,1)&(-4,-1)\\D: (2, -5)&(-2,5)&(-2,-5)\end{array}$

None of the given options transform the black triangle onto the red triangle.

7 0

3 years ago

which is a correct definition for a right angle? a.an angle with a measure that equals the measure of a square corner b.an angle

Sunny_sXe [5.5K]

A. an angle with a measure that equals the measure of a square corner

6 0

3 years ago

What is the cross-sectional area of a cement pipe 2 in. thick with an inner diameter of 5 ft? Use pie 3.14.

Paul [167]

Answer:

1.60 $ft^{2}$

Step-by-step explanation:

Assuming that this is a cylindrical pipe, the area can be determined by applying the formula for calculating the area of a circle.

i.e Area = $\pi$ $r^{2}$

So that,

for the inner part of the pipe,

r = $\frac{diameter}{2}$

= $\frac{5}{2}$

= 2.5 feet

Area of the inner part of the pipe = $\pi$ $r^{2}$

= 3.14 x $(2.5)^{2}$

= 19.625

Are of the inner part of the pipe is 19.63 $ft^{2}$ .

Total diameter of the pipe = 5 + 0.2

= 5.2 feet

r = $\frac{5.2}{2}$

= 2.6 feet

Area of the pipe = $\pi$ $r^{2}$

= 3.14 x $(2.6)^{2}$

= 21.2264

Area of the pipe is 21.23 $ft^{2}$ .

Thus the cross sectional area = Area of the pipe - Area of the inner part of the pipe

= 21.2264 - 19.625

= 1.6014

The cross sectional area of the cement pipe is 1.60 $ft^{2}$ .

6 0

3 years ago

The formula to estimate organic growth is Pf=P0 . e^rt

Zanzabum

Answer:

16.12 hr

Step-by-step explanation:

If I got it right, we have:

Formula Pf = P0*e^(rt)
Pf = 75709
P0 = 1349
r = 25% = 0.25
t = ?

Substitute the given values and solve for t:

75709 = 1349*e^(0.25t)
e^(0.25t) = 75709/1349
e^(0.25t) = 56.1223
ln e^(0.25t) = ln 56.1223
0.25t = 4.03
t = 4.03/0.25
t = 16.12 hr

3 0

3 years ago

How do you simplify this equation?

Troyanec [42]

4^3*4^-5= 4^-2 (add the exponents since the base is the same)
5^-4*5^1= 5^-3 (add the exponents since the base is the same)

Square both terms (double the exponents)
(4^-2)^2= 4^-4
(5^-3)2= 5^-6

Then take out negative exponents (x^-a= 1/x^a)
4^-4 /5^-6 = 5^6/4^4

Final answer: 5^6/4^4

If you want it in number form
5^6= 15625
4^4=256
15625/256= 61.035...

5 0

3 years ago