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Neko [114]
4 years ago
10

Find the sum! Help I don’t kno

Mathematics
2 answers:
scoray [572]4 years ago
8 0
- 26 is the sum, used my calculator
Darina [25.2K]4 years ago
5 0
-26 I believe the answer is :)
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3. Samuel tiene 11 cajas con mosaicos cuadrados de 20 cm por
mihalych1998 [28]

Answer:

Primero veamos el área de la pared, es decir, el área total que Samuel debe cubrir.

La pared es de 3m por 2m.

Entonces el area es:

A = 3m*¨2m = 6m^2.

Ahora veamos los mosaicos.

Cada mosaico es un cuadrado de 20cm por 20cm.

El primer paso sería cambiar las unidades para tener metros aca también.

1cm = 0.01m

entonces.

20cm = 20*0.01m = 0.2m.

Entonces cada mosaico es:

0.2m por 0.2m

El área de cada mosaico es:

a = 0.2m*0.2m = 0.04m^2.

En una caja de mosaicos hay 14 mosaicos, entonces con una caja Samuel puede cubrir 14 veces a, o:

14*0.04m^2 = 0.56m^2.

Y Samuel tiene 11 cajas, entonces tenemos 11 veces lo de arriba:

11*0.56m^2 = 6.16m^2.

Y el área de la pared es 6m^2.

6.16m^2 > 6m^2

Entonces con las 11 cajas de mosaicos podemos cubrir completamente esa pared, y vamos a tener algunos mosaicos sobrantes.

Entonces Samuel no debe comprar mas cajas.

6 0
3 years ago
HELP! QUICK<br> Write the equation for this in point-slope form.<br> (Ill mark as brainlist if good)
Papessa [141]
What is the question?
7 0
4 years ago
If d = c-b / a-n , then wbat is the value of b?
Lera25 [3.4K]

Answer:

Step-by-step explanation:

d = c-b / a-n

Make b the subject

d (a - n) = c - b

-b = d (a - n) / c

Divide both sides by - 1

-b / -1 = d (a - n) / c ÷ -1

b = d (a - n) / c × 1/-1

= d(a - n) / - c

= ad - an / - c

The options given doesn't match the final answer

3 0
3 years ago
If x+y=10 and x - y = 11, what is the value of x - 72​
pentagon [3]

Answer:

x+y=10\\\\x-y=11\\-y=11-x\\y=-11+x\\\\x+(-11+x)=10\\x-11+x=10\\2x=21\\x=10.5

x-72\\10.5-72\\-61.5

The answer is -61.5

8 0
3 years ago
I need to finish these so I don't fail, help me out
Dima020 [189]

Answer:

y < -2x - 4

Step-by-step explanation:

This is a guessing game. You just have to plug and chugg to find your answer.

Look at the table they gave you and plug in the x and y value into the given equations and see if they're true or not.

For example, I used the point x=-2 and y=1 from the table.

I plug that into y < -2x - 4 and got a false statement:

y < -2x - 4

(1) < -2(-2) - 4

1 < 4 - 4

1 < 0

this is false because one cannot be less than zero. Therefore this equation is the wrong one.

If you tried to plug in x=-2 and y=1 into the other 3 equations you'll see that they'll be correct.

4 0
3 years ago
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