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Art [367]
4 years ago
11

Simplify the expression -30 + d - 12 +6d

Mathematics
1 answer:
marissa [1.9K]4 years ago
6 0

Answer:

the answer is 7d - 42

Step-by-step explanation:

add like terms

-30 + (-12) = -42

6d + d = 7d

combine the two terms together

7d - 42(standard form) or -42 + 7d

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What value for C will make the expression a perfect square trinomial x2-7x+c
Tom [10]

Answer:

The value of c is 12.25

Step-by-step explanation:

we know that

A perfect square trinomial is of the form

(x-a)^{2}=x^{2}-2ax+a^{2}

In this problem we have

x^{2}-7x+c

so

equate the equations

x^{2}-7x+c=x^{2}-2ax+a^{2}

we have

the following equations

-7x=-2ax -----> equation A

and

c=a^{2} -----> equation B

<u>Solve the equation A</u>

-7x=-2ax

7=2a

a=3.5

<u>Solve the equation B</u>

c=a^{2}

c=3.5^{2}=12.25

therefore

(x-3.5)^{2}=x^{2}-7x+12.25

The value of c is 12.25

7 0
3 years ago
Read 2 more answers
A study in El Paso, Texas, looked at seat belt use by drivers. Drivers were observed at randomly chosen convenience stores. Afte
Nikolay [14]

Answer:

The answers will always be bias. This is due to the fact that for someone to say no, would be self incrimination. Though there will be exceptions for those who do not care, or who are just honest, the 25%.

Step-by-step explanation:

4 0
3 years ago
Which model represents 12x11 I NEED HELP PLEASE
Blizzard [7]

Answer:

132 is the answer

Step-by-step explanation:

3 0
3 years ago
La suma de las probabilidades de todos los posibles resultados de un experimento aleatorio debe ser igual a
Digiron [165]

Respuesta: Uno

La suma de la probabilidad de todos los resultados posibles de un experimento aleatorio debe ser igual a uno.

Porque algunos resultados más ocurren en cada sendero y la suma de todas las probabilidades es 100% o uno.

Espero haber ayudado, buena suerte! :)

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3 years ago
A line thru (5,1) with slope of 3.
VladimirAG [237]
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y = 3x - 14

hope it helps</span>
7 0
3 years ago
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