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victus00 [196]
2 years ago
12

Refer to the image i couldnt copy it so the image is the quesstion answer in true or false

Mathematics
1 answer:
Irina18 [472]2 years ago
6 0

The sign of "b" on the numerator should be negative. So we conclude that the correct option is false.

<h3>Is the equation in the image correct or incorrect?</h3>

For a quadratic equation of the form:

y = a*x^2 + b*x + c

By using the Bhaskara's formula, the solutions of the equation:

0 = a*x^2 + b*x + c

Are given by the formula:

x = \frac{-b \pm \sqrt{b^2 - 4ac} }{2a}

Notice that the sign of the first term on the numerator should be negative, while on the image it is positive.

So the equation shown in the image is incorrect.

If you want to learn more about quadratic equations:

brainly.com/question/1214333

#SPJ1

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A piece of a chain's length and weight are in proportion. If 320 cm of chain weighs 8 kg, then
Dafna11 [192]

Answer:

B. 80 cm of chain weighs 2 kg.

Step-by-step explanation:

In order to choose the correct answer, we need to define the comparative relation between the length and weight of the chain. We will do this by performing the simple operation of division.

It is easier to divide the larger number by the smaller and that is what we will show here (although <em>you can do as you wish and still get the same result</em> - it's math!):

320 ÷ 8 = 40

The result we got is 40. This means that <u>the length of the chain is equal to the value of forty of its weights!</u> And this will be the operation we will perform in order to determine the right answer:

A) Does 2 (kg) multiplied by 40 equal 40 (cm)? No, therefore, it is incorrect.

B) Does 2 (kg) multiplied by 40 equal 80 (cm)? <u>Yes, this answer is correct!</u>

Just in case, we will perform this action with the rest of the possible choices:

C) 4 kg × 40 = 160 and NOT 80 cm.

D) 2 kg × 40 = 80 and NOT 160 cm.

5 0
3 years ago
Winter coats are marked 70% off on February 1st. If a coat costs $57.75 on January 31st, how much will it cost on February 1st?
Andrews [41]

Answer: $17.33

Step-by-step explanation:

Original Cost: 57.75

Percentage off: 70%

70% off of 57.75 (57.75 x 0.7 = 40.425. 57.75 - 40.425) = 17.33 (rounded)

7 1
4 years ago
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6th grade math ! Help me please :))
Paha777 [63]

Answer:

the traingle the 3rd one

it is 5/9

Step-by-step explanation:

8 0
3 years ago
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Given that one root is twice the other for the quadratic equation px-3x^2=24 . Find the values of p
Dvinal [7]
Alright, so we can write this as -3x^2+px-24=0 (by subtracting 24 from both sides)

3*-24=-72, so 2 numbers have to add to 72 but multiply to a number p. If a number is y and the other is 2y, that means that y*2y=-72 and 2y^2=72. Therefore, y^2=36 by dividing both sides by 2 and y is either 6 or -6. If y is 6, then 2y is 12 and 6+12=18=p
If y is -6, then 2y=-12 and -6-12=-18=p
8 0
3 years ago
0.06 is 10 times as much as...
boyakko [2]
0.006 Given : 0.06 is 10 times as much as
Solution:
Let the number be x
So, 0.06 is 10 times as much as x


8 0
2 years ago
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