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2 years ago

Write the equation 0.3x^2+5x-7=0 in standard form and then choose the value of “b”

Mathematics

1 answer:

kotegsom [21]2 years ago

6 0

Answer:

b = 5

Step-by-step explanation:

The given equation is :

$0.3x^2+5x-7=0$ .......(1)

It is in the form of quadratic equation. The general form of a quadratic equation is as follows :

$ax^2+bx+c=0$ .....(2)

Comparing equations (1) and (2), we get :

a = 0.3, b = 5 and c = -7

Hence, the value of b is equal to 5.

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Work out the area of a circle with radius of 7.5cm

lidiya [134]

Answer:

Area of circle is equal A = πr²

Here r = 7.5 and π = 3.142

so,

A = 3.142(7.5)²

A = 176.17 after rounding off.

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2 years ago

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belka [17]

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3 years ago

When is g(x) = 0 for the function g(x) = 5⋅2^3x + 4?

SashulF [63]

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2 years ago

Let d(t) be the total number of miles Joanna has cycled, and let t represent the number of hours after stopping for a break duri

katrin [286]

For this case we have the following equation:
$d (t) = 12t + 20
$
The variables are:
t: time in hours
d (t): distance traveled in miles.
We evaluate the distance traveled after 4 hours.
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$d (4) = 12 (4) +20

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6 0

3 years ago

Read 2 more answers

Evaluate 6x+24 for x=8

crimeas [40]

Answer:

Explanation:

x = 8

6x + 24

Insert 8 for x

6 · 8 + 24

Multiply

6 · 8 = 48

Add

48 + 24 = 72

Therefore 6x + 24 = 72

7 0

3 years ago