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3 years ago

Which days of the week are happy number days

Mathematics

1 answer:

vichka [17]3 years ago

8 0

Answer:

3 days

Step-by-step explanation:

The happy days of the week are Friday, Saturday and Sunday. You have no school those days.

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Given the quadriatic equation

vazorg [7]

Answer:

⇒ The given quadratic equation is x2−kx+9=0, comparing it with ax2+bx+c=0

∴ We get, a=1b=−k,c=9

⇒ It is given that roots are real and distinct.

∴ b2−4ac>0

⇒ (−k)2−4(1)(9)>0

⇒ k2−36>0

⇒ k2>36

⇒ k>6 or k<−6

∴ We can see values of k given in question are correct.

8 0

1 year ago

The angle measures of a triangle are in the ratio 5:6:7. find the angle measures of the triangle

Mandarinka [93]

Answer:

50°, 60°, 70°

Step-by-step explanation:

Sum the parts of the ratio, 5 + 6 + 7 = 18 parts

The 3 angles in a triangle sum to 180° , then

180° ÷ 18 = 10° ← value of 1 part of the ratio, then

5 parts = 5 × 10° = 50°

6 parts = 6 × 10° = 60°

7 parts = 7 × 10° = 70°

The angle measures of the triangle are 50° , 60° , 70°

4 0

2 years ago

Write a word problem for the equation. <br> 1/2 (x-4) = 1/3x + 2

Ganezh [65]

Answer:

Half the age of Carlos four years ago is 2 years more than one-third his current age.

Step-by-step explanation:

We want to write a word problem for the equation.

$\frac{1}{2} (x - 4) = \frac{1}{3}x + 2$

Let x represent the present age of Carlos.

Four years ago, Carlos was x-4 years.

Half his age four years ago is ½(x-4)

Two years more than one-third his current age is ⅓x+2

3 0

3 years ago

What is the temperature, in degrees Fahrenheit, shown on the thermometer to the nearest integer? Enter your integer answer in th

Illusion [34]

It’s negative 4 because the scale shows there is 4 lines

8 0

2 years ago

If Sin x = -¼, where π < x < 3π∕2 , find the value of Cos 2x

Sliva [168]

Answer: 7/8

Cos2x has 3 formulas, Sinx is given in the question, we should use the formula with sinus. I guess that's the solution.

5 0

2 years ago