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tensa zangetsu [6.8K]
3 years ago
14

Plz help

Mathematics
1 answer:
tamaranim1 [39]3 years ago
3 0

Answer:Answer:

Consider the system of equations,

and

As we know that,

'The intersection points of the graphs of the system of equations are the solutions of the system of equations'.

So, after plotting the given graphs, we see that,

The only intersection point is (0.714,-2.857).

Thus, the solution of the system is x= 0.714 and y= -2.857.

Read more on Brainly.com - brainly.com/question/12048118#readmore

Step-by-step explanation:

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The mayor of a town places a map of the town on a coordinate grid with Town Hall at the point (0,0) and with each unit represent
Lorico [155]

Answer:

Given that the question rightly asks the amount it cost to drive from Smithville to Jones City, we have;

The question rightly asks the amount it cost to drive from Smithville to Jones City is approximately $7.209

Step-by-step explanation:

The coordinates of Smithville is (-25, 10)

The coordinates of Jones City is (15, 12)

The cost of driving a car for a mile = $0.18

Therefore, the distance from Smithville to Jones City is given by the formula for the distance, l, between two points with coordinates as follows;

l = \sqrt{\left (y_{2}-y_{1}  \right )^{2}+\left (x_{2}-x_{1}  \right )^{2}}

Where;

(x₁, y₁) = (-25, 10) and (x₂, y₂) = (15, 12)

l = \sqrt{\left (12-10  \right )^{2}+\left (15-(-25)  \right )^{2}} = 2 \cdot \sqrt{401}

The distance from Smithville to Jones City = 2·√401 ≈ 40.05 miles

The amount, A, it cost to drive from Smithville to Jones City a distance of approximately 40.05 miles is therefore given as follows;

A = 40.05 miles × $0.18 ≈ $7.209

8 0
3 years ago
Find the annual simple interest rate. I = $18, P = $150, t = 6 years
Delicious77 [7]

Answer:

  • 2%

Step-by-step explanation:

<u>Use this formula for interest:</u>

  • I = Ptr, where I - interest, P- principal, t- time, r - interest rate

<u>Substitute values and solve for r:</u>

  • 18 = 150*6*r
  • r = 18/900
  • r = 2/100
  • r = 2 %
5 0
3 years ago
Suppose that 30% of all students who have to buy a text for a particular course want a new copy (the successes!), whereas the ot
Softa [21]

Answer:

a. Mean = 4.5, Standard Deviation = 1.775

b. 0.0152

Step-by-step explanation:

Given

n = 15 purchasers

p = Success = 30%

p = 0.3

q =Failure = 70%

q = 0.7

a.

Mean = np

Mean = 15 * 0.3

Mean = 4.5

Standard Deviation = √Variance

Variance = npq

Variance = 15 * 0.3 * 0.7

Variance = 3.15

Standard Deviation = √3.15

Standard Deviation = 1.774823934929884

Standard Deviation = 1.775 ---------- Approximated

b.

The probability that the number who want new copies is more than two standard deviations away from the mean value

Standard Deviation = 1.775

Mean = 4.5

2 Standard Deviation and Mean = 2 * 1.775 + 4.5

= 3.55 + 4.5

= 8.05

P(X>8.05) = P(9) + P(10) +........+ P(15)

Using the binomial distribution

(p + q) ^ n where p = 0.3, q = 0.7 , n = 15

Expanding (p+q)^n where n = 15 and r > 8

We have

15C9 p^9 q^6 + 15C10 p^10 q^5 + 15C11 p^11 q⁴ + 15C12 p^12 q³ + 15C13 p^13 q² + 15C14 p^14 q + p^15

= 5005 (0.3)^9 (0.7)^6 + 3003 (0.3)^10 (0.7)^5 + 1365 (0.3)^11 (0.7)⁴ + 455 (0.3)^12 (0.7)³ + 105 (0.3)^14 (0.7)² + 15 (0.3)^14 (0.7) + 0.3^15

=0.015234

7 0
3 years ago
It is 3 p.m. in the Central Time Zone; therefore, it is what time in the Mountain Time Zone.
Aleksandr [31]
Central time is 1 hr ahead of mountain time.....so if central time is 3 p.m. then mountain time would be 2 p.m.
3 0
4 years ago
How to solve 32.8 x 21.2​
mariarad [96]

Answer:

Decimal: 695.36

Fraction: 695 and 9/25

Step-by-step explanation:

5 0
3 years ago
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