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MArishka [77]
3 years ago
9

A rectangle has dimensions 5 and one fourth

Mathematics
1 answer:
Mariulka [41]3 years ago
8 0
The area of one triangle is 28.875 inches.
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The speed of boat in still water is 15km/hr if needs 4 more his to travel 63 km against the current of a river than it needs to
hram777 [196]

Answer:

\frac{63}{15  - c} - \frac{63}{15  + c} = 4

Step-by-step explanation:

The systems of equations are

Let us assume the rate of the current be c

Now actual speed against the current is (15 - c)

And, the actual speed with the current is (15 + c)

Here we applied the time formula i.e. distance by speed

Also the upstream time  - downstream time = 4

Now the equations are

\frac{63}{15  - c} - \frac{63}{15  + c} = 4

5 0
2 years ago
3=4×3/4 what is true about this equation
Evgen [1.6K]
It is true that 3=4 times 3\4 because 4 times 3 equals 12 while 12 divided by 4 equals 3.

3=3 is true.
6 0
3 years ago
Solve the system of equations. 3x – 4y = 8 18x – 5y = 10 x= y =<br>​
Zepler [3.9K]

Answer:

Step-by-step explanation:

Solution by substitution method

3x-4y=8

and 18x-5y=10

Suppose,

3x-4y=8→(1)

and 18x-5y=10→(2)

Taking equation (1), we have

3x-4y=8

⇒3x=4y+8

⇒x=( 4y+8)/ 3  →(3)

Putting x= (4y+8 )/3  in equation (2), we get

18x-5y=10

18( (4y+8) /3)  -5y=10

⇒24y+48-5y=10

⇒19y+48=10

⇒19y=10-48

⇒19y= -38

⇒y=- 38 /19

 ⇒y= -2→(4)

Now, Putting y=-2 in equation (3), we get

x=4y+8

x= (4(-2)+8) /3

 ⇒x= (-8+8)/ 3

 ⇒x= 0/ 3

 

⇒x=0

∴x=0  and  y= -2

5 0
2 years ago
What’s the area of the triangle ??
qaws [65]

Answer:

7²

Step-by-step explanation:

3*2=6 6/2=3 6-2=4 4*2=8 8/2=4  4+3=7  

6 0
3 years ago
Read 2 more answers
13. f(x) = -x + 4x^3 -2
Oksi-84 [34.3K]

Answer:

x = 5

Step-by-step explanation:

7 0
2 years ago
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