All categories

2 years ago

Use the discriminant to determine the number of real solutions to the quadratic equation. 5a2+30a+45=0

Mathematics

1 answer:

Eddi Din [679]2 years ago

7 0

Answer:

Step-by-step explanation:

30^2 - 4(5)(45)

900 - 900

The discriminant works out to be 0, so there is one solution.

You might be interested in

Please help me I don’t understand what I’m supposed to do ! Unit 1 - Triangle Congruence

Luba_88 [7]

Answer:

i dont either

Step-by-step explanation:

6 0

2 years ago

What value of A in this equation y=(9A-7)x would give a line with the slope -5?

Rainbow [258]

0, I put y=(0-7)x into a graphing calculator

5 0

3 years ago

Please help it will be brainlist please make sure you are 100% the awnser is right

Dominik [7]

Answer:

Step-by-step explanation:

Step 1: Sum of angles on a straight line is 180

Step 2:

2x + 25 + y = 180

2x + y = 180 - 25

2x + y = 155 (1)

Step 3:

3x - 10 + y = 180

3x + y = 180 + 10

3x + y = 190 (2)

Step 4: Substract equation 1 from 2

3x + y - 2x - y = 190 - 155

x = 35

Step 5:

Substitute x in equation 1 to find y

2x + y = 55

2(35) + y = 155

70 + y = 155

y = 155 - 70

y = 85

4 0

2 years ago

Determine the measure of ∠Y. images attached

Gwar [14]

Answer:

<h3>The answer is option C</h3>

Step-by-step explanation:

Since it's a right angled triangle we can use trigonometric ratios to find the value of ∠Y

To find the value of ∠Y we use tan

We have

$\tan(∠Y) = \frac{25}{20} \\ \tan(∠Y) = \frac{5}{4} \\ ∠Y = { \tan^{ - 1} } \frac{5}{4} \\ ∠Y = 51.34019...$

We have the final answer as

Hope this helps you

5 0

2 years ago

Read 2 more answers

+4<br> What is the solution of 2x-15<br> - <0?<br> • -45x51<br> 0 -4 -45<br> -4

soldier1979 [14.2K]

Answer:

alto 5.340040 to costco

Step-by-step explanation:

7 0

3 years ago