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cluponka [151]
3 years ago
9

Need help on 7-119 please

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
7 0

Answer:

segment a would be 2.5, b would be 2.5, and c would be 3.5 i believe

Step-by-step explanation:

to get a midpoint, you measure the distance between the two endpoints, then divide that answer by 2.

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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
This is what I'm working on why couldn't all of them be correct?
lord [1]
The answer to that quest is C
6 0
3 years ago
What are the solutions for the given equations below?
Lubov Fominskaja [6]

Answer:

2/ x = +-2

3/ n = +-3

Step-by-step explanation:

6 0
3 years ago
What is the answer (7t2+4t+1)–4t2
Solnce55 [7]

Answer:

\boxed{ \bold{ \huge{ \boxed{ \sf{3 {t}^{2}  + 4t + 1}}}}}

Step-by-step explanation:

\sf{ (7 {t}^{2}  + 4t + 1) - 4 {t}^{2} }

Remove the unnecessary parentheses

\longrightarrow{ \sf{7 {t}^{2}  + 4t + 1  - 4 {t}^{2} }}

Collect like terms

\longrightarrow{ \sf{7 {t}^{2}  - 4 {t}^{2}  + 4t + 1}}

\longrightarrow{ \sf{3 {t}^{2}  + 4t + 1}}

Hope I helped!

Best regards! :D

5 0
3 years ago
What is the unit rate for 768.57 m 41.1 h?
V125BC [204]
768.57 / 41.1 = 18.7 m per hr
6 0
3 years ago
Read 2 more answers
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