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Paul [167]
3 years ago
8

7x-2y=-13. x=11+2y Solve this system of equations using Substitution

Mathematics
1 answer:
shtirl [24]3 years ago
7 0

Answer:

Step-by-step explanation:

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418.953 rounding to the nearest hundred
Marta_Voda [28]

Answer:

400

Step-by-step explanation:

rounding to the nearest hundred, in bold you'll see the hundred place.

418.953

The number next to that (right side →) determines if it stays 4 or goes one number up, 5.

If it's 4 or lower is stays the same

and

If it's 5 or higher (up to 9) it increases by 1.

so

because the number next to it is a 1, it stays 4.

Therefore 400 is the answer.

7 0
3 years ago
Examine the first two steps used to solve the equation.
bija089 [108]

Answer:

C.

Step-by-step explanation:

Your fractions are missing there fraction bars:

3/4 (20y − 8) + 5 = 1/2 y + 1/4 (20y + 8)  

15y − 6 + 5 = 1/2 y + 5y + 2  

15y − 1 = 11/2 y + 2

A. 11/2y and 2 aren't like terms because one contains the variable y and the other contains no variable

B. The distribute property can't be used there because you don't have 15(y-1) you have 15y-1

C. Subtracting 11/2y sounds like a good step because there is a y term on the opposing side.

15y-1=11/2y+2

Subtracing 11/2y on both sides

9.5y-1=2

That looks pretty good because then you would add 1 on both sides giving:

9.5y =3

Last step would get the y by itself which is dividing both sides by 9.5 giving you 6/19.

D. You could actually do this but it doesn't help you get x by itself.  The equation would look like this: 15/2 y-1/2=11/4 y+1

5 0
4 years ago
Read 2 more answers
Please answer this is due soon
kirill115 [55]

shes jogging so slow what

Step-by-step explanation:

ok well 1.5 miles is how much she wants to walk

and x is how long it will take

and if she is walking 3.75

1.5x times (3.75)

that is x = 5.625

3 0
3 years ago
NEED HELP PLEASE ASAP
ivann1987 [24]

Answer: 45?

Step-by-step explanation: because a perfect corner is 90 degrees so if you split that, you will get 45!

6 0
2 years ago
una señal de trafico arroja una sombra de 2,53m, mientras que en ese instante la sombra de un poste que mide 1,40m es de 1,95m a
JulsSmile [24]

Answer:

Un poste de 2,9 m de altura proyecta una sombra de 1,18 m de largo.  

Al mismo tiempo, un edificio cercano proyecta una sombra de 38,25 m de largo.  

¿Cuán alto es el edificio? Redondee su respuesta al medidor más cercano.

1.18/2.9 a 38,25/b

esto le dará una pista

Step-by-step explanation:

7 0
3 years ago
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