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3 years ago

I need help please!

Mathematics

2 answers:

Triss [41]3 years ago

7 0

Answer:

The correct option is

The polynomial is prime.

Step-by-step explanation:

we have to select the true statement for the equation

$x^2+8x-6$

As, we know if $b^2-4ac$ is a positive perfect square integer, then the trinomial can be factored over the rational numbers. Otherwise, we cannot factor $ax^2 + bx + c$ over the rational numbers,

so the trinomial is considered to be prime.

Equation: $x^2+8x-6$

a=1, b=8 and c=-6

$b^2-4ac=8^2-4(1)(-6)=64+24=88$

which is not a perfect square integer.

Hence, the above trinomial can not be factored into lowe degree.

⇒ Given polynomial is prime.

hence, option 4 is correct.

maxonik [38]3 years ago

4 0

Answer:

D..........

Step-by-step explanation:

rgW

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A plumber has 2.5 meter long copper wire he needs to cut links of 60 cm 35 cm and 90 cm work out how much the initial 2.5 metres

andrezito [222]

2.5 meters is equal to 250 centimeters.

250 - 60 - 35 - 90 = 65

There would be 65 centimeters or .65 meter

3 0

3 years ago

Students in a school were asked to collect old bottles as part of a recycling drive. Some of the data recorded at the drive is s

Basile [38]

Answer:

The number of students who collected exactly 9 bottles.

Step-by-step explanation:

The given histogram shows the number of students who participated in the recyling drive & their old bottle waste collection.

We can find out the total number of students who participated just by looking at the histogram (students = 10), the number of students who colected bottles below 7 or 3 bottles etc.

But since the number of bottles is given in the form of grouped data, one cannot infer the exact number of bottles collected by students.

Hence, out of the given statements, 'The number of students who collected exactly 9 bottles' is the incorrect one.

$\rule{150pt}{2pt}$

5 0

3 years ago

X-2y=2 in slope intercept form

Afina-wow [57]

Answer:

I believe it's written y = 1/2x - 1

Hope this helps :)

8 0

3 years ago

Move the digits in 625,134 to create a

vredina [299]

Answer:

a. The new number created is 265,134.

b. The new number created is 625,314.

c. The new number created is 652,314.

d. The new number created is 462,513.

e. The new number created is 253,416.

Step-by-step explanation:

Note: The first question is not correctly and fully stated. It is therefore restated as the questions are answered as follows:

a. Move the 2 so it is worth 10 as much.

From 625,134, the 2 implies 20,000.

If we move the 2 so it is worth 10 as much, it implies that 20,000 is multiplied by 10 and the answer is as follows:

20,000 * 10 = 200,000

The answer implies that 2 becomes the first number and the new number created from 625,134 is as follows:

The new number created is 265,134.

b. Move the 3 so it is worth 10 times as much.

From 625,134, the 3 implies 30.

If we move the 3 so it is worth 10 as much, it implies that 30 is multiplied by 10 and the answer is as follows:

30 * 10 = 300

The answer implies that 3 becomes the fourth number and the new number created from 625,134 is as follows:

The new number created is 625,314.

c. Move the 5 so it is worth 50,000.

This implies that 5 becomes the second number and the new number created from 625,134 is as follows:

The new number created is 652,314.

d. Move the 4 so its value changes to 4 X 100,000

This implies that 4 is now 400,000 and it now becomes the first number. The new number created from 625,134 is as follows:

The new number created is 462,513.

e. Move the 1 and the 6 so that the sum of their values is 16.

This implies the one becoms 10 and the 6 becomes just 6.

As a result, this implies that the 1 now becomes the fifth number and the 6 now become the last number. The new number created from 625,134 is now as follows:

The new number created is 253,416.

3 0

3 years ago

PLZ help I will mark as brainliest

Elden [556K]

Answer:

6750 - 3894 = 2856

Step-by-step explanation:

You have to make use of the arithmetic facts you know.

The least-significant asterisk must be 0, because the sum of 4 and 6 is 10.

The 10s asterisk must be 9,so that the sum 5 + 9 + 1 has a least-significant digit of 5.

The 100s asterisk must be 7, because that is the least-significant digit of the sum 8 + 8 + 1 = 17.

The 1000s asterisk must be 3, so that 2 + 3 + 1 = 6.

(The "1" in each of these sums is the carry from the sum of the digits with the next lower place value.)

So, the subtraction problem is ...

6750 - 3894 = 2856

_____

<em>Comment on the solution method</em>

For the most part, we worked this as an addition problem. The sum of the last two numbers must be equal to the first: 6570 = 3894 +2856. For some of us, addition facts are easier to work with than subtraction facts. The carry/borrow can be less confusing that way.

6 0

3 years ago