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oksian1 [2.3K]
3 years ago
10

At what point does the line given by the following equation cross the x-axis? Y= -3/7 +4

Mathematics
2 answers:
olga_2 [115]3 years ago
5 0
To find x-intercept sub a 0 in for y and solve for x.

0= -3/7x + 4
4=-3/7x
x=28/3

So the point would be (28/3, 0).
Hope that helps!
liberstina [14]3 years ago
3 0
Y =25/7 THAT IS THE POINT 
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horrorfan [7]

<em>Answer</em><em>:</em>

the surface area of the rectangular pyramid below is 300 units2

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A car is driving at a speed of 60 mi/h. What is the speed of the car in feet per minute?
Inga [223]
1mile=5280ft\\\\1h=60min\\\\60\ \frac{mi}{h}=60\cdot\frac{5280}{60}\ \frac{ft}{min}=5280\ ft/min
3 0
3 years ago
Write a polynomial function of minimum degree with real coefficients whose zeros include those listed. Write the polynomial in s
sergey [27]

Answer:

y = x⁴ − 9x² − 50x − 150

Step-by-step explanation:

Complex roots come in conjugate pairs.  So if -1 + 3i is a root, then -1 − 3i is also a root.

y = (x − 5) (x + 3) (x − (-1 + 3i)) (x − (-1 − 3i))

y = (x − 5) (x + 3) (x + 1 − 3i) (x + 1 + 3i)

Distribute using FOIL (first, outer, inner, last) to get real coefficients:

y = (x − 5) (x + 3) (x² + (1 + 3i)x + (1 − 3i)x + (1 − 3i)(1 + 3i))

y = (x − 5) (x + 3) (x² + x + 3ix + x − 3ix + 1 + 3i − 3i − 9i²)

y = (x − 5) (x + 3) (x² + 2x + 1 + 9)

y = (x − 5) (x + 3) (x² + 2x + 10)

Distribute to convert from factored form to standard form:

y = (x² + 3x − 5x − 15) (x² + 2x + 10)

y = (x² − 2x − 15) (x² + 2x + 10)

y = x²(x² + 2x + 10) − 2x(x² + 2x + 10) − 15(x² + 2x + 10)

y = x⁴ + 2x³ + 10x² − 2x³ − 4x² − 20x − 15x² − 30x − 150

y = x⁴ − 9x² − 50x − 150

8 0
3 years ago
Italian Barolo ~ Italy is famous for several types of wine. The region of Piedmont is famous for a type of wine called "Barolo".
slega [8]

Answer:

The sample proportion is 0.36635  

Step-by-step explanation:

A confidence interval has two bounds, a lower bound and an upper bound.

The sample proportion is the halfway point betwen those two bounds, that is, the sum of those bounds divided by 2.

In this problem, we have that:

Lower bound: 0.2931

Upper bound: 0.4396

What is the sample proportion?

(0.2931 + 0.4396)/2 = 0.36635

The sample proportion is 0.36635  

3 0
3 years ago
p is a polynomial of degree 5. p has roots of multiplicity 2 at t=4 and t=0, a root of multiplicity 1 at t=-4, and p(1)=2025. Fi
DENIUS [597]
P(x) = (x^2)(x - 4)^2(x + 4) + some constant(b)
2025 = (1^2)(1 - 4)^2(1 + 4) + b
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Complete Equation:

p(x) = (x^2)(x - 4)^2(x +4) + 1980

or expanded form

p(x) = x^5 - 4x^4 - 16x^3 + 64x^2 + 1980
5 0
3 years ago
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