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jekas [21]
3 years ago
14

What are the exact solutions of x2 – 5x – 7 = 0?

Mathematics
1 answer:
erica [24]3 years ago
7 0

Answer:

you have to use quadratic formula

6.140, -1.140

Step-by-step explanation:

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Solve the division problem. Round answer to the nearest hundreth<br><br> 9.2 divide 52.063
notsponge [240]
9.2/52.063 is equal to 0.18.
7 0
3 years ago
Don't understand question and don't know formula
zzz [600]
The formula is (number of sides-2)*180 over number of sides

Each angle for hexagon is 120degree because
(6-2)*180 over 6 equals to 120
So p is 120
For q:
2q=180-120
2q=60
q=60 over 2
q=30
P+Q=120+30
=150
7 0
2 years ago
A quadratic function is given. f(x) = 1 + x − 7 x2 (a) Use a graphing device to find the maximum or minimum value of the quadrat
Virty [35]

Answer:

a) P (x,y) \approx (0.1,1.05), b) P(x,y) = (0.07,1.04).

Step-by-step explanation:

a) The graphic is enclosed to the problem. By visual inspection, an absolute maximum is found.

P (x,y) \approx (0.1,1.05)

b) The exact method consists in the application of the First and Second Derivative Tests. First and second derivatives are, respectively:

f'(x) = 1 - 14\cdot x

f''(x) = -14

The First Derivative Test consists in equalizing the first derivative to zero and solving the expression:

1 - 14\cdot x = 0

x = 0.07

According to the second derivative, the critical point leads to a maximum. The remaining component is determined by evaluation the polynomial:

y = 1 +0.07-7\cdot (0.07)^{2}

y = 1.04

The exact solution is P(x,y) = (0.07,1.04), indicating that graphic solution leads to a good approximation.

6 0
3 years ago
The orange grove produced 892 crates of oranges. Each train car holds 112 crates . What is the minimum number of train cars they
pickupchik [31]
The minimum number of train cars needed is 8 because 112 multiplied by 8 is 896 which means 7 trains will be full and the last one will only carry 108 crates
5 0
3 years ago
Read 2 more answers
In the diagram below, lines a and b are parallel and cut by transversal, t. If angle 3 is 120 degrees, find the measure of angle
PolarNik [594]
Hi there!

Since angles 3 and 7 are corresponding angles, they are also congruent. This means that angle 3 is equal to angle 7. Therefore, the correct answer is C, 120 degrees.
4 0
3 years ago
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