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Zarrin [17]
3 years ago
15

What expression is equivalent to -9r + 4r

Mathematics
1 answer:
Monica [59]3 years ago
6 0

Answer:

−9r+4r

=−9r+4r

=−r+−r+−r+−r+−r+−r+−r+−r+−r+r+r+r+r

=−r+−r+−r+−r+−r

=−5r

Step-by-step explanation:

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Firdavs [7]

Answer:

m=12

Step-by-step explanation:

basic math

5 0
3 years ago
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Si en la pantalla de tu calculadora aparece el numero 0.572,¿que teclas debes oprimir para que aparezcan los siguientes numeros?
dangina [55]

Answer:

Step-by-step explanation:

Si en la pantalla aparecen esos numeros entonces tenes que hacer alguna calculacion para que aparezcan los siguentes numeros indicados. Para cada opcion necesitas apretar las sigientes teclas que aparacen en negro...

0.572 - 0.447 = 0.125

0.572 - 0.194 = 0.378

0.572 + 0.307 = 0.879

0.572 - 0.116 = 0.456

0.572 + 0.428 = 1

7 0
3 years ago
Can someone help and explain this to me,if you do it means a lot :)
erma4kov [3.2K]

Answer:

0 zero

Step-by-step explanation:

you must find gf(x) first

g[ f(x) ] = g [ 2 + 1 ]

= 3-2+x which is you sub fx tu g

g [ f (-1) ] = 3-2-1

=0

6 0
3 years ago
A^2+b^2=18^2<br> What does a equal<br> What does b equal
Yakvenalex [24]
A = √(18+b)(18-b), -√(18+b)(18-b)
b= √(18+a)(18-a), -√(18+a)(18-a)

take the root of both sides and solve I hope this helps
5 0
3 years ago
If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11?
mario62 [17]

Answer:

y = kx

Step-by-step explanation:

If y varies directly as x

That means y = kx

Where k is the constant of proportionality

If y = 18 and

x = 5

K= ?

Using y = kx

18 = k x 5

Divide both sides by 5

18/5 = k x 5 /5

3 3/5 = k

K = 3 3/5

Now , when x = 11

The expression to find y is

y = kx

Since k = 3 3/5 and

x = 11

y = 3 3/5 x 11

y = 18/5 x 11

Multiply through

y = 198/5

y = 39 3/5

6 0
3 years ago
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