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Luba_88 [7]
3 years ago
12

Helpppppp meeeee please URGENT True or False

Mathematics
1 answer:
san4es73 [151]3 years ago
3 0

Answer:

false

Step-by-step explanation:

you cant have same size without congruent

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Observa los puntajes de las respuestas de una evaluación que tuvo de 100 preguntas. Si Alfredo contestó correctamente 57 pregunt
n200080 [17]

La pregunta está incompleta:

Observa los puntajes de las respuestas de una evaluación que tuvo de 100 preguntas. Si Alfredo contestó correctamente 57 preguntas, 16 incorrectas y el resto las dejó en blanco, ¿qué puntuación obtuvo en la evaluación?

Puntos por respuesta:

Correctas: 4

En blanco: -1

Incorrectas: -3

Answer:

Alfredo obtuvo una puntuación de 153.

Step-by-step explanation:

De acuerdo a la información proporcionada, conoces el número de preguntas en la evaluación y el número de preguntas que Alfredo contestó de forma correcta e incorrecta y tienes que restar estas del total de preguntas para encontrar el número de preguntas que dejó en blanco:

100-57-16=27

Ahora, debes multiplicar el número de respuestas correctas, incorrectas y en blanco por su respectivo puntaje:

Correctas: 57*4=228

En blanco: 27*(-1)=-27

Incorrectas: 16*(-3)=-48

Finalmente, debes sumar los resultados obtenidos por cada tipo de respuesta:

228+(-27)+(-48)= 228-27-48=153

De acuerdo a esto, la respuesta es que Alfredo obtuvo una puntuación de 153.

4 0
3 years ago
Jimmothy has $40 and starts mowing lawns during Corona Stay Home
sveta [45]

Answer:

b = 40

Step-by-step explanation:

This is because Jim starts with $40 and then makes $20/lawn. The equation can be represented by y = 20x + 40

Hoped this helped! :)

8 0
3 years ago
Read 2 more answers
The combined height of one fir tree and one pine tree is 212121 meters. The height of 444 fir trees stacked on top of each other
Drupady [299]

Answer:

Height of fir tree = 9 meters

height of pine tree= 12 meters

Step-by-step explanation:

The combined height of one fir tree and one pine tree is 21 meters. The height of 4 fir trees stacked on top of each other is 24 meters taller than one pine tree.

Let x be the height of fir tree and y be the height of pine tree

x+y=21

Subtract x from both sides

y=21-x

height of 4 fir trees = pine tree +24

4x=y+24

Substitute 21-x or y in the above equation

4x=21-x+24

Add x on both sides

5x=45

Divide by 5 on both sides

x=9

Now plug in 9 for x and find out y

y=21-x

y=21-9

y=12

Height of fir tree = 9 meters

height of pine tree= 12 meters

4 0
4 years ago
I feel like everyone on this app has just given up, because no one has been helping me with any of my math stuff. And it's just
Darina [25.2K]

Answer:

aw, i <3 you to ;)

if you need me let me know

okay?

;)

5 0
3 years ago
Read 2 more answers
A motorboat takes
leva [86]
108 miles 3 hours = 36 mph upstream
108 miles 2 hours = 54 mph downstream

bv = boat velocity in still water
cv = current velocity

bv -cv = 36
bv +cv = 54  Adding both equations

2*bv = 90

boat velocity in still water = 45 mph

since bv + cv = 54
then we know the current velocity = 9 mph


6 0
4 years ago
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