4 years ago

Please someone help me

Mathematics

1 answer:

fomenos4 years ago

3 0

Mmm looks like a test. I don't know if we should be answering this.

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Which expression has a negative value? a. 7+36-4)(2) b. -2[12-(-3)] c. (15-7) - (9-3) d. -5[7+(-14) )-30

andrew-mc [135]

B has a negative value of -30

7 0

3 years ago

Factor quadratic equation 6x.squared +41x + 63 = 0

vlabodo [156]

Answer:

x1= -9/2 ; x2= -7/3

Step-by-step explanation:

Rewrite to 6x^2 + 27x +14x +63 = 0

Factor and get 3x(2x + 9) + 7(2x + 9) = 0

Factor again and get (2x + 9)(3x + 7) = 0

Separate into possible cases -> 2x + 9 = 0; 3x + 7 = 0

The equation has two solutions: x1 = -9/2 and x2 = -7/3

Hope this helped!!

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3 years ago

Someone show equation form

Oliga [24]

Answer/Step-by-step explanation:

$\begin{gathered}\boxed{\begin{array}{c|c}\boxed{\bf Form} &\boxed{\bf Equation} \\ \sf Slope\: intercept\:form &\sf y=mx+b \\ \sf Intercept\:form &\sf \dfrac{x}{a}+\dfrac{y}{b}=1\\ \sf Normal\:form &\sf xcos\omega+ysin\omega=p \\ \sf Two\: point\:form &\sf y-y_1=\left(\dfrac{y_2-y_1}{x_2-x_1}\right)(x-x_1)\\ \sf Point\:slope\:form &\sf y-y_1=m(x-x_1) \\ \sf Standard\:form &\sf Ax+By+C=0 \end{array}}\end{gathered}$