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Amiraneli [1.4K]

3 years ago

7

Write the equation 0.3x 2 + 5x - 7 = 0 in general form and then choose the value of "b."

2 answers:

bija089 [108]3 years ago

7 0

The answer should be 50 the second option is the correct

USPshnik [31]3 years ago

6 0

The general form of a quadratic equation is that which is expressed in a form,
ax² + bx + c = 0
To write the equation in its general form, eliminate the decimal by multiplying the equation by 10. It now becomes,
3x² + 50x - 70 = 0
The value of b is therefore 50 and the answer is the second choice.

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Norma-Jean [14]

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B and D

Step-by-step explanation:

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One step inequalities.... 9x<18<br> how to solve

Nuetrik [128]

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5 0

2 years ago

Read 2 more answers

Jar a contains 2 white and 4 red balls, where jar b contains 1 white and 1 red ball. a ball is randomly chosen from jar a and pu

alisha [4.7K]

1:1, or 50% if your using percentages

6 0

3 years ago

Answer it right and i'll try to give you brainliest.

mario62 [17]

Answer:

384 cm²

Step-by-step explanation:

Since it is a square pyramid, the total surface area of the pyramid is the area of its square base plus the area of its 4 triangular faces.

$\boxed{area \: of \: triangle = \frac{1}{2} \times base \times height }$

Area of a triangular face

= ½ ×12 ×10

= 60 cm²

$\boxed{area \: of \: square = side \times side}$

Base area of pyramid

= 12 ×12

= 144 cm²

∴ Surface area of pyramid

= 4(60) +144

= 240 +144

= 384 cm²

7 0

2 years ago