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prisoha [69]
3 years ago
5

Solve by factoring. x^2 - 49 = 0

Mathematics
1 answer:
zvonat [6]3 years ago
4 0
The answer is (x+7)(x-7)
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It will take Adam four hours to drive to Disney Park, and 2.5 times less time if driving 45 mph faster. What is the distance Ada
Travka [436]

Answer:

120 miles

Step-by-step explanation:

we know that

The speed is equal to the distance divided by the time

Let

s------> the speed in mph

d-----> the distance in miles

t -----> the time in hours

s=d/t

solve for the distance

d=s*t

<em>It will take Adam four hours to drive to Disney Park</em>

s=x mph

t=4 h

substitute

d=4x -----> equation A

<em>It will take Adam 2.5 times less time if driving 45 mph faster</em>

so

s=(x+45) mph

t=4/2.5=1.6 h

substitute

d=1.6(x+45) -----> equation B

equate equation A and equation B

4x=1.6(x+45)

Solve for x

4x=1.6x+72

4x-1.6x=72

2.4x=72

x=30 mph

Find the distance d

d=4x -----> d=4(30)=120 miles

3 0
3 years ago
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Help<br><br> The diameter of the circle is 8in
-BARSIC- [3]
I believe your answer is 25.12
7 0
3 years ago
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Find and simplify an expression for the area of three rows of m squares with side lengths of m centimeters. Please help
Anna [14]

Answer:

3m²

Step-by-step explanation:

A square is quadrilateral (four sides) in which all sides are equal. Also, opposite sides are parallel to one another and all the four angles in a square are 90 degrees each.

The area of a square is given as:

Area = length * length

Given that the square has side lengths of m centimeters, therefore:

The area of each square = m cm × m cm = m² cm²

There are three rows of m squares, hence the total number of square is:

Total square = 3 rows * m squares per row = 3m squares

The total area of the square = area of each square * total number of square = m² * 3m = 3m² cm²

3 0
3 years ago
Ten more than 6 times a number is at least 4 less than 4 times the number
Kipish [7]

Answer:

6x+10 ≥ 4x-4

Step-by-step explanation:


3 0
3 years ago
Put 8y-4x=56 in slope intercept form
quester [9]

Answer:

slope intercept form: y=1/2(x)+7

Step-by-step explanation:

slope intercept form is written as y=mx+b

on a graph, the equation y=8y-4x=56 goes through the "x" axis at point (-14,0) and the goes through the "y" axis at point (0,7)

6 0
3 years ago
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