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3 years ago

8

Section 4

1 answer:

dybincka [34]3 years ago

3 0

Answer:

A is right answer bro just see

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Solve the following new equation

mixer [17]

Answer:

<h3>x = 1.54 or x = - 4.54 to 2 decimal places</h3>

Step-by-step explanation:

x² + 3x - 7 = 0

Using the quadratic formula

a = 1 b = 3 c = - 7

$x = \frac{3 ± \sqrt{ {3}^{2} - 4(1)( - 7) } }{2(1)} \\ x = \frac{ - 3± \sqrt{9 + 28} }{2} \\ \\ x = \frac{ -3 ± \sqrt{37} }{2} \\ \\ x = \frac{ - 3 + \sqrt{37} }{2} \: \: \: \: \: or \: \: \: x = \frac{ - 3 - \sqrt{37} }{2} \\ \\ x = 1.54 \: \: \: or \: \: x = - 4.54$

Hope this helps you

7 0

3 years ago

Determine the rate of change of the following coordinates

OleMash [197]

Answer:

-4

Step-by-step explanation:

4 0

3 years ago

A surveying instrument is 5 feet from the ground, 22 feet from the base of a building. The angle of elevation from the top of th

g100num [7]

Answer:

$\frac{\left(22\cdot \sin \left(60\right)\right)}{\sin \left(30\right)} +5$

43.1 ft

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Help me pleaseeeeeeee

puteri [66]

It would be the 30/3 one

7 0

3 years ago

What is the some of the counting numbers from 1 to 80?

kumpel [21]

There is a formula for adding consecutive numbers:
total = n*(n+1)/2
total = 80*(81)/2
total = 3,240

7 0

3 years ago