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Alla [95]
3 years ago
9

How do I solve this -1/2x-7=-11

Mathematics
2 answers:
tankabanditka [31]3 years ago
7 0

Answer:

Step-by-step explanation:

-1/2x -7=-11

-1/2x +4=0

4=1/2x

x=8

Snowcat [4.5K]3 years ago
5 0

Answer:

x = 8

Step-by-step explanation:

FIrst you move the constant to the right so we add 7 to -11.

Now we have -1/2x = -11+7

Add -11 and 7 which gives us -4

Now we have -1/2x = -4

Multiply both sides by -2

We end up with 8 as X

You might be interested in
Una recta con pendiente -2 ´pasa por el punto P(5, -1). La abscisa del punto Q que está en esa recta es 1. Encuentre la ordenada
oksian1 [2.3K]

Answer:

La ordenada de Q es 7.

Step-by-step explanation:

La ecuación de una recta es:

y = a*x + b

donde a es la pendiente y b es la ordenada al origen.

Para este problema, sabemos que la pendiente es -2

Entonces:

a = -2

y = -2*x + b

También sabemos que esta recta pasa por el punto (5, -1)

Esto significa que cuando evaluamos la ecuación en x = 5, y toma el valor y = -1

Si reemplazamos esos valores en la ecuación, obtenemos:

-1 = -2*5 + b

-1 = -10 + b

-1 + 10 = b

9 = b

Entonces la ecuación de la recta es:

y = -2*x + 9

Sabemos que el punto Q está en la línea, y la abscisa de este punto es 1.

Entonces este punto es Q (1, k)

donde k es la ordenada de este punto.

Porque nuestra línea también pasa por este punto, podemos concluir que cuando x = 1, y = k

Reemplazando eso en la ecuación tenemos:

k = -2*1 + 9 = -2 + 9 = 7

k = 7

La ordenada de Q es 7.

7 0
3 years ago
ASAP please help!!!
Serggg [28]
Y+4<u><</u>9
subtract 4
y<u><</u>5
y is smaller than and equal to 5
so you shade from 5 to the negative end to infinity (to the left) and shade the 5 to show that it is included (attachment says A)







6 less than (-6) 2 times a number (2 time x) is greater than (>) 8 (8)

-6+2x>8
add 6
2x>14
divide 2
x>7
so
x is bigger than 7
shade from 7 to the positive end to infinity (to the right) and don't shade 7 but put a circle around it to show that it is not included (attachment says B )

I have included pictures of the number lines

4 0
3 years ago
I need help with this question?????
den301095 [7]
18.84

Since the formula of circumference is C = 2 pi r or C = pi times diameter, you can conclude that the circumference is 18.84.

Assuming that pi is 3.14 in this case rather than the full pi or just in terms of pi.

Hope this helps!
8 0
3 years ago
Adam had the chicken pox and had to stay inside even though he didn't feel very bad at all. He decided to make a cake to surpris
Elena L [17]
Your answer would be
he needs .4 Liters of milk

Hope this helps :)

3 0
3 years ago
Which point lies on a circle with a radius of 5 units and center at P(6, 1)?
Delvig [45]
Hello : 
all points <span>lies on a circle with a radius of 5 units and center at P(6, 1)are : 
M(x,y) :  (x-6)² + (y-1)² = 25</span>
4 0
4 years ago
Read 2 more answers
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