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kipiarov [429]
3 years ago
10

Is the equation written in standard form-2x + 3y= -5

Mathematics
1 answer:
morpeh [17]3 years ago
7 0
The standard form: ax + by = c

and your equation is: -2x + 3y = - 5 (Yes this is written in standard form)
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The area of a circle is 28.26 square kilometers. What is the circles diameter
irinina [24]

Answer:

6km

Step-by-step explanation:

Area of circle = πr²

Where r = radius,  π= 3.14, A = 28.26km²

A = 3.14 x r²

3.14 r2 = 28.26

Divide both sides by 3.14

r²= 28.26/3.14

r² = 9

Square root both sides

r= √9

r= 3

Radius = 3km

Note : Diameter = 2 x radius

Diameter = 3 x 2

Diameter = 6km

I hope this was helpful, Please mark as brainliest.

7 0
3 years ago
If a people plane flies 600 miles an hour, and
Diano4ka-milaya [45]

Answer:

350 MPH

Step-by-step explanation:

600-200+50-100=350

4 0
3 years ago
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Don rode his bike 1/4of a mile and then walked2/5<br> of a mile. How many miles did he travel?
ArbitrLikvidat [17]

Answer:13 over 20

13

20

=0.65

Step-by-step explanation:

6 0
3 years ago
TIMED! Can somebody please help me with this?
kondaur [170]

Answer:

use quizlet

Step-by-step explanation:

7 0
3 years ago
Hi! Can anybody help me with these problems? I have to do 2 step equations.
Dovator [93]
1) 3.8x + 5.2x - 6.7 = 11.3
9x = 11.3 + 6.7
9x = 18
x = 18/9
x = 2

2) 7.8y - 4.9 - 5.4y = 2.3
2.4y = 7.2
y = 7.2/2.4
y = 3

3)

\frac{2}{3} x - 5 = 1
\frac{2}{3} x = 5 + 1
\frac{2}{3} x = 6

Multiply by 3 by both sides:

3 \times \frac{2}{3} x = 3 \times 6

Simplify:

2x = 18
x = 18/2
x = 9

4)

\frac{7}{5} y = 3 - \frac{1}{5}

Do lowest common denominator:

\frac{7}{5} y = \frac{(5 \times 3) - 1}{5}
\frac{7}{5} y = \frac{15 - 1}{5}
\frac{7}{5} y = \frac{14}{5}

Simplify by 5 by both sides:

7y = 14
y = \frac{14}{7}
y = 2
6 0
3 years ago
Read 2 more answers
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