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Viktor [21]
2 years ago
10

When solving equation, Drew's first step is shown below. Which property justifies

Mathematics
1 answer:
Temka [501]2 years ago
8 0
Addition propertyyyy
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The square root of -1 is:
Sliva [168]
The square root of -1 is I
4 0
3 years ago
Use the Line Tool to graph the equation. 3x−y=9
Gelneren [198K]

Answer:

Step-by-step explanation:

Solve for

y

y

.

Tap for more steps...

y

=

−

9

+

3

x

y

=

-

9

+

3

x

Rewrite in slope-intercept form.

Tap for more steps...

y

=

3

x

−

9

y

=

3

x

-

9

Use the slope-intercept form to find the slope and y-intercept.

Tap for more steps...

Slope:

3

3

y-intercept:

−

9

-

9

Any line can be graphed using two points. Select two

x

x

values, and plug them into the equation to find the corresponding

y

y

values.

Tap for more steps...

x

y

2

−

3

3

0

x y 2 -3 3 0

Graph the line using the slope and the y-intercept, or the points.

Slope:

3

3

y-intercept:

−

9

-

9

x

y

2

−

3

3

0

x y 2 -3 3 0

image of graph

3 0
3 years ago
To travel 80 miles, it takes Sue, riding a moped, 2 hours less time than it takes Doreen to travel 60 miles riding a bicycle. Su
andriy [413]

Answer:

Time taken by Doreen is 6 hours and speed is 10 miles per hour.

Time taken by Sue is 4 hours and speed is 20 miles per hour.

Step-by-step explanation:

Let the speed of Doreen be x

According to the question  speed of Sue   is = x+10

time  taken By Sue to cover 80 miles = \frac{80}{x+10}

time taken by Doreen to travel 60 miles = \frac{60}{x}

According to question Sue take two hours less than Doreen takes

therefore

\frac{60}{x} - \frac{80}{x+10} =2

\frac{60(x+10)-80x}{x(x+10)} =2

60(x+10) -80x = 2(x(x+10)

60x+600-80x = 2x^2+20x\\

simplifying it ,we get

2x^2+40x-600=0\\

Dividing both sides by 2 ,we get

x^2+20x-300=0\\

solving it for x ,we get

(x+30)(x-10) =0

x =-30 which is not possible

x =10 miles per hour

Speed of Doreen = 10 miles per hour

Speed of Sue = 10+10 = 20 miles per hour

Time taken by Doreen = 60 divided by 10 = 6 hours

Time taken  by Sue = 80 divided by 20 = 4 hours

5 0
3 years ago
What is the area of rectangle ABCD? Round the answer to the nearest whole, if necessary. 50 square units
fomenos

Answer:

are there any answer choices?

Step-by-step explanation:


9 0
3 years ago
Read 2 more answers
Solve for q.<br> 8.3q = 41.5<br><br> q =
givi [52]
Hello,

Your answer would be 5.

41.5 / 8.3 would equal you 5.


Hope this helps
3 0
2 years ago
Read 2 more answers
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