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Bingel [31]
3 years ago
11

Please help me! Giving right answer brainiest!

Mathematics
1 answer:
motikmotik3 years ago
4 0
<span>A. an observational study, since they were not assigned to their groups.</span>
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Alguien sabe como conversar en brainly osea, poder conversar con otras personas o no se puede? perdon si pongo matematicas XD
Elden [556K]

Answer:

Hola, supongo que estás preguntando si hay una forma de conversar con otras personas en privado en Brainly.

Actualmente, no hay forma de conversar en privado con otras personas. Muchas personas conversan en los comentarios de preguntas o respuestas, pero Brainly es un sitio web educativo y le recomendaría que use Brainly solo con fines educativos.

¡Espero que esto te ayude! Que tengas un buen día.

6 0
2 years ago
How to solve x^2+8x+3 using the quadratic formula​
Schach [20]

Answer:

x = sqrt(13) - 4 or x = -4 - sqrt(13)

Step-by-step explanation:

Solve for x:

x^2 + 8 x + 3 = 0

Hint: | Solve the quadratic equation by completing the square.

Subtract 3 from both sides:

x^2 + 8 x = -3

Hint: | Take one half of the coefficient of x and square it, then add it to both sides.

Add 16 to both sides:

x^2 + 8 x + 16 = 13

Hint: | Factor the left hand side.

Write the left hand side as a square:

(x + 4)^2 = 13

Hint: | Eliminate the exponent on the left hand side.

Take the square root of both sides:

x + 4 = sqrt(13) or x + 4 = -sqrt(13)

Hint: | Look at the first equation: Solve for x.

Subtract 4 from both sides:

x = sqrt(13) - 4 or x + 4 = -sqrt(13)

Hint: | Look at the second equation: Solve for x.

Subtract 4 from both sides:

Answer: x = sqrt(13) - 4 or x = -4 - sqrt(13)

7 0
3 years ago
An artist uses four distinct colors in his latest painting–red, blue, green, and yellow– with ounces used in a ratio of 10:22:4:
vazorg [7]

Answer:

He used 77 ounces of blue paint

Step-by-step explanation:

In this question, we are to calculate the ounces of blue paint used based on the ratio in the question.

Firstly we add all the ratios together

This gives; 10 + 22 + 4 + 18 = 54

The ratio that represents that of the blue paint is 22;

Thus the number of ounces of blue paints used is; 22/54 * 189 = 77 ounces

8 0
3 years ago
Someone Help me please
bagirrra123 [75]

Answer:

25

Step-by-step explanation:

You plug in the g(x) function into the f(x) function as the x, after this you replace the x with -1 and solve for you answer, so it should look like

f(g(x))=(2x+7)^2

f(g(-1)=(2*-1+7)^2=25

3 0
3 years ago
Does anyone know how to this?<br><br>I am so lost rn<br>​
seraphim [82]

Answer:

Step-by-step explanation:

Measure the sides of the leaf then you'll get your answer hope it helps.

6 0
3 years ago
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