The product of a number and 4 less than the number is 77 . Find the number.

Mathematics

1 answer:

Julli [10]2 years ago

5 0

Answer:

8.5

Step-by-step explanation:

You might be interested in

What is the equation of the line that passes through the point (3,2) and has a slope of -5/3?

Pani-rosa [81]

Answer= Y=-5/3x+7

First substitute (3,2) into the equation y=-5/3x +b which gives you 2=-5/3x+b. Solve for b, then put the equation into slope-intercept form.

8 0

2 years ago

What are the measures of Angles a, b, and c? Show your work and explain your

kobusy [5.1K]

Answer:

a= 30

b=60

c=105

Step-by-step explanation:

A forms a vertical angle with another angle that measures 30 degrees, therefore,

a= 30 degrees.

Since a is 30 degrees and a and b are in the same triangle with a 90-degree angle and all interior angles in a triangle equal 180 degrees.

Then, 30+90+b=180

120+b=180

b=60

Angle c and an angle that equals 75 degrees are supplementary. meaning that they add up to 180 degrees.

180-75=c

105=c

3 0

1 year ago

A sea bird is 28 meters above the surface of the ocean.What is its elevation?

Citrus2011 [14]

Answer:

91.8 ft above sea level

Step-by-step explanation:

Note that 1 meter is approx. 3.28 feet.

Converting 28 meters to feet is accomplished by multiplying 28 m by the conversion factor 3.28 ft / 1 m:

28 m 3.28 ft

-------- * ----------- = 91.8 ft above sea level

1 1 m

4 0

3 years ago

ABC and EDC are straight lines. EA is parallel to DB. EC = 8.1 cm. DC = 5.4 cm. DB = 2.6 cm. (a) Work out the length of AE. cm (

harkovskaia [24]

By applying the knowledge of similar triangles, the lengths of AE and AB are:

a. $\mathbf{AE = 3.9 $ cm}\\\\$

b. $\mathbf{AB = 2.05 $ cm} \\\\$

See the image in the attachment for the referred diagram.

The two triangles, triangle AEC and triangle BDC are similar triangles.
Therefore, the ratio of the corresponding sides of triangles AEC and BDC will be the same.

This implies that: