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sdas [7]
3 years ago
5

Find the length of AB¯¯¯¯¯¯ to the nearest hundredth.

Mathematics
1 answer:
Sindrei [870]3 years ago
5 0
786569000morewords45
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f(x)=−7x 2 +8x+2f, left parenthesis, x, right parenthesis, equals, minus, 7, x, squared, plus, 8, x, plus, 2 What is the value o
vlada-n [284]

The discriminant of the function is 120, and the function has 2 different x-intercepts

<h3>How to determine the discriminant?</h3>

The function is given as:

f(x) = -7x^2 + 8x + 2

The discriminant (d) is calculated using:

D =b^2 - 4ac

So, we have:

D = 8^2 - 4 * (-7) * 2

Evaluate

D = 120

Because the value of D is greater than 0, then the function has 2 different x-intercepts

Read more about quadratic functions at:

brainly.com/question/1214333

#SPJ1

8 0
2 years ago
The unchanging value of the ratio between two proportional quantities?
Naddika [18.5K]

The right answer is the constant of proportionality


If two variables are related and this relationship is that there is a<em> constant ratio</em> between them, then we are talking about proportionality. There are two types of proportionality.


1) Direct Proportionality:


In a mathematical language this is given by this equation:


y=kx


where k is in fact this constant of proportionality. If x <em>increases,</em> y also <em>increases</em> at the same rate. On the other hand,  If x<em> decreases, </em>y also <em>decreases</em> at the same rate.


2) Inverse Proportionality:


In a mathematical language this is given by this equation:


y=\frac{k}{x}


where k is also called the constant of proportionality. If x <em>increases,</em> y <em>decreases</em> at the same rate. On the other hand,  If x <em>decreases,</em> y <em>increases</em> at the same rate.

4 0
3 years ago
Read 2 more answers
31% of 40 estimate what is it please help​
chubhunter [2.5K]

31% of 40 is 12.4 exactly

7 0
3 years ago
Read 2 more answers
Help like noww plsss
insens350 [35]

Answer:

69.9245

Step-by-step explanation:

Speed of ball = 13.07 × swimming speed

Speed of ball = 13.07 × 5.35

4 0
3 years ago
A rock is dropped off a 500-foot cliff. After 1 second the rock is traveling 32 feet per second then after 4 seconds the rock st
kozerog [31]

Answer:

<u>A. The equation describing the relationship between speed and time is:</u>

<u>s = 32t</u>

<u>Ordered pairs of the form (speed, time) are:</u>

<u>(32, 1)</u>

<u>(64, 2)</u>

<u>(96, 3)</u>

<u>(128, 4)</u>

<u>B. </u>

<u>Using s = 32t, we have:</u>

<u>s = 32 * 5 = 160 feet per second</u>

Step-by-step explanation:

1. Let's review the information provided to us to answer the question correctly:

Height of the cliff = 500 feet

Speed after one second = 32 feet per second

Speed after four seconds = 128 feet per second

2. Assume the relationship between time, t, and speed, s, is linear and write an equation describing the relationship. Use ordered pairs of the form (speed, time)

The equation describing the relationship between speed and time is:

s = 32t

Ordered pairs of the form (speed, time) are:

(32, 1)

(64, 2)

(96, 3)

(128, 4)

3.  Use the equation to determine the speed of the rock 5 seconds after is dropped.

s = 32t

s = 32 * 5 = 160 feet per second

Note: Same answer to question 14436233, answered by me today.

4 0
4 years ago
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