3 years ago

What is 1+2+3+4+5+6+7?

Mathematics

2 answers:

Elan Coil [88]3 years ago

6 0

Answer:

Step-by-step explanation:

yanalaym [24]3 years ago

6 0

Answer:

Step-by-step explanation:

Add everything

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What is the value of 8x + 2x when x = 6?

ella [17]

8x + 2x

Plug the variable in.

8×6 + 2×6

48+12 = 60

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4 years ago

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555%-333%= 222% ...???

Elenna [48]

I got -12.9315 , idk if that's right , I just used my calculator

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4 years ago

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What's the equation for a circle with a center of (-2, 1) and a radius of 3.

faltersainse [42]

Answer:

$(x+2)^2 + (y-1)^2 = 9$

Step-by-step explanation:

The equation of a circle is written with the center and radius into the vertex form $(x-h)^2 + (y-k)^2 = r^2$ .

Here h = -2 and k = 1. Substitute these values with r = 3.

$(x--2)^2 + (y-1)^2 = 3^2\\(x+2)^2 + (y-1)^2 = 9$

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3 years ago

can someone just tell me HOW to set this up. i need to find the measurements of all the angles. no need to do math just lmk how

kondor19780726 [428]

Answer:

here 5x-30=3x+28 ( corresponding angles are equal)

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4 years ago

Select the quadratic equation that has roots x=8 and x=-5

stellarik [79]

Step-by-step explanation:

Since, x=8 and x=-5 are the roots.

Therefore, (x - 8) & (x - 5) will be factors.

Hence, required quadratic equation can be given as:

$(x - 8)(x - 5) =0 \\ \\ \therefore {x}^{2} + ( - 8 - 5) x+ ( - 8) \times ( - 5) = 0 \\ \\ \therefore {x}^{2} + ( - 13) x+ 40= 0 \\ \\ \huge \red{ \boxed{ \therefore {x}^{2} - 13x+ 40= 0 }} \\ is \: the \: required \: quadratic \: equation.$

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3 years ago