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schepotkina [342]
3 years ago
11

Plz help i will give brainliest

Mathematics
2 answers:
jasenka [17]3 years ago
6 0
I agree with this person
tino4ka555 [31]3 years ago
3 0
Kahn academy would help a lot
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A statistician designs an experiment that tests the effectiveness of a drug. Which process can invalidate the results of the exp
Misha Larkins [42]
I think the answer is D not too sure tho
8 0
3 years ago
How do you classify the following polynomial?<br> -4x³ + 2x² - 5x+3x²
sammy [17]

Answer:

-4 x³+2x²-5x+3x²

combine like terms

-4x³ +5x²-5x

common factors

-1(4x³-5x²+5x)

find one factors

Ans: -x (4x²-5x+5)

5 0
2 years ago
Pls no files, thanks!
Aliun [14]

3rd answer i believe

8 0
3 years ago
Solve the following equation in terms of x.<br><br> 20x - 3y = z
olga_2 [115]

Answer:

(3y+z)/20

Step-by-step explanation:

Begin by moving 3y to the right side of your equation:

20x=3y+z

Then divide both sides by 20 isolating x on one side of your equation:

x=(3y+z)/20

5 0
2 years ago
En las olimpiadas de Matemática. Roció represen a su colegio. La prueba consistía en 60 problemas. Cada respuesta correcta valía
PtichkaEL [24]

Answer:

Rocío respondió 43 preguntas correctas y 17 incorrectas.

Step-by-step explanation:

Dado que en las olimpiadas de Matemática, Rocío representó a su colegio, y la prueba consistía en 60 problemas, de los cuales cada respuesta correcta valía 4 puntos y por cada respuesta incorrecta había un punto en contra, y luego del examen, Rocío obtuvo un puntaje de 155, y ella respondió todas las preguntas y desea saber cuantas fueron correctas y cuantas incorrectas, para determinar dicha duda se debe realizar el siguiente calculo:

60 x 4 = 240

40 x 4 - 20 = 140

45 x 4 - 15 = 165

42 x 4 - 18 = 150

43 x 4 - 17 = 155

Por lo tanto, Rocío respondió 43 preguntas correctas y 17 incorrectas.

5 0
3 years ago
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