2 years ago

The difference of three times a number and 4 is -19?

Mathematics

1 answer:

bearhunter [10]2 years ago

6 0

N is the unknown number. 3n-4=-19 →add 4 on both sides and it becomes 3n=-15. Divide by 3 and it becomes n=-5.

You might be interested in

Don’t really remember how to do this 8-9

yulyashka [42]

8-9=-1 because it does not stop it goes to the negative number -1

5 0

3 years ago

Find the value of x. B X+5 4 D E 2x 3 А x = [?]

Greeley [361]

Answer:

x = 3

Step-by-step explanation:

Δ BDE and Δ BAC are similar triangles, thus the ratio of corresponding sides are equal, that is

$\frac{BD}{BA}$ = $\frac{BE}{BC}$ , substitute values

$\frac{x+5}{3x+5}$ = $\frac{4}{7}$ ( cross- multiply )

4(3x + 5) = 7(x + 5) ← distribute parenthesis on both sides )

12x + 20 = 7x + 35 ( subtract 7x from both sides )

5x + 20 = 35 ( subtract 20 from both sides )

5x = 15 ( divide both sides by 5 )

x = 3

5 0

2 years ago

What is (f+ g)(x) given that f(x) =-7x^3-1 and g(x)=2x^3+6

vodka [1.7K]

Answer:

this isn't really an answer but use desmos graphing calculator, its an app and a website it will give you the answer.

5 0

2 years ago

Find the product of 2(5.9) mentally using the distributive property.

VARVARA [1.3K]

2(5.9) is 11.8

Hopefully i is right I did this in my head.

7 0

2 years ago

*Please Help!* (Easy question) 20 POINTS

mariarad [96]

Yes - they have to be similar. Since they are using the same line as the hypotenuse, the ratio of the other two sides are in the same ratio (ie, the slope of the line), the 3 inner angles will be the same. Thus, the triangles will be similar.

7 0

2 years ago

Read 2 more answers