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allochka39001 [22]
3 years ago
7

Simplify: (-2)(-3)+(4)(-8)Simplify: (3)(-6)-18​

Mathematics
2 answers:
densk [106]3 years ago
6 0

Answer:

-26, and -36

Step-by-step explanation:

(-2) (-3) + (4) (-8)

        6 + -32 = -26

(3) (-6) - 18

       -18 + -18 = -36

koban [17]3 years ago
5 0

Answer:

4

Step-by-step explanation:

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What is m Please help me
8090 [49]

Answer:

Angle BCA = 70

Angle CAB = 20

Step-by-step explanation:

Not sure what angle you meant, so I'll give you all of them <3

Angle BCA = 70 degrees, because If two angles form a line, they add up to 180.  (110+x=180, x = 70)

Angle CAB = 20 degrees, because there are 180 degrees in a triangle, so 90+70+x=180, x = 20

Hope it helps <3

5 0
3 years ago
Read 2 more answers
I need help with this one
vekshin1

Answer:

c

Step-by-step explanation:


8 0
3 years ago
8.90+876.09=6.5-2.34
Drupady [299]
Um, I am sorry but this question is unanswerable. The reason for that matter is the desired answer is not specified in the question. (If the answer you seek is "Are they equal?" than the answer is no because the answers equal 884.99 and 4.16 so the answers do not equal. Hope that answer helped.)
5 0
4 years ago
el perimetro de un terreno rectangular es de 170m y su area es de 170^2hallar la medida de sus lados con ecuacion cuadratica
Blizzard [7]

Answer:

Acá tenemos un sistema de ecuaciones.

El perímetro de un rectángulo es:

2*A + 2*L = 170m

donde A es el ancho y L es el largo.

Y el área del rectángulo es:

A*L = 170m^2.

Entonces, el primer paso es aislar una de las variables en una de las ecuaciones, yo voy a aislar A en la segunda:

A = 170m^2/L.

Ahora reemplazo eso en la primera ecuación y la resuelvo para L.

2*( 170m^2/L.) + 2*L = 170m.

340m^2 + 2*L^2 = 170m*L

ahora tenemos una ecuación cuadrática:

2*L^2 - 170m*L + 340m^2 = 0.

Las soluciones se pueden obtener usando la formula de Bhaskara:

L = \frac{+170 +- \sqrt{170^2 -4*340*2}  }{2*2} = \frac{170 +-161.8}{4}

Entonces las soluciones son:

L = (170 + 161.8)/4 = 82.95m

L = (170 - 161.8)/4 = 4.1m

Entonces, si tomamos L = 82.95m, tenemos A = 4.1 m

y el área es:

A*L = 4.1m*82.95m = 170m^2

3 0
3 years ago
Working alone, Jack can do a puzzle in 5 hours. With his brother's help, the two can do the same puzzle in 2 hours.
AysviL [449]

Answer:

3 hours and 20 minutes

Step-by-step explanation:

Jack's rate is 1 puzzle for every 5 hours, so his rate per hour is 1/5 of a puzzle per hour.

We need to find the rate of his brother so here is our equation,

1/5 + 1/x = 1/2

1/2 - 1/5 =1/x

3/10 = 1/x

3/ 3x = 3/10

3x=10

x= 3 and 1/3 hours

3 hours and 20 minutes

6 0
3 years ago
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