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IRINA_888 [86]
4 years ago
5

-9x - x - 7x² - 6x² + 8 +6 Help please

Mathematics
2 answers:
nikklg [1K]4 years ago
8 0
-13x to the power of 2 - 10x + 14
hammer [34]4 years ago
3 0

Answer:

\boxed{ \bold{ \huge{ { \sf{ - 13 {x}^{2}  - 10x + 14}}}}}

Step-by-step explanation:

\sf{ - 9x - x - 7 {x}^{2}  - 6 {x}^{2}  + 8 + 6}

Collect like terms

⇒\sf{ - 7 {x}^{2}  - 6 {x}^{2}  - 9x - x + 8 + 6}

⇒\sf{ - 13 {x}^{2}  - 10x + 8 + 6}

Add the numbers

⇒\sf{ - 13 {x}^{2}  - 10x + 14}

Hope I helped!

Best regards!!

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I need help can someone help
zaharov [31]

Answer:

yes i can but will have to get back to you in about half a hour just doing maths atm with the teacher

Step-by-step explanation:

4 0
3 years ago
Select the two values of x that are roots of this equation 3x^2 + 1 =5x
Zina [86]

Answer:

x = 1.434 and x=0.232

Step-by-step explanation:

To find the root of the equation stated above we need to:

(1) Write the polynomial equation with zero on the right hand side:

3x^{2} + 1 = 5x ⇒ 3x^{2} -5x + 1 = 0

(2) Divide the whole equation by 3

3x^{2} -5x + 1 = 0 ⇒ x^{2} -\frac{5}{3}x + \frac{1}{3}= 0

(3) Use the quadratic formula to solve the quadratic equation:

The quadratic formula states that the two solutions for a quadratic equation is given by:

\frac{-b±\sqrt{b^{2} - 4ac}}{2a} (1)

In this case, a = 1, b = -\frac{5}{3}, c= \frac{1}{3}

Substituiting a, b and c in equation (1) We get:

\frac{-\frac{5}{3}±\sqrt{(-\frac{5}{3})^{2} - 4(1)(\frac{1}{3})}}{2(1)} (1)

The two solutions are:

x = 1.434 and x=0.232

8 0
3 years ago
What is the greatest common factor of 7ab and 8b^3
Vlad [161]

Answer:

b

Step-by-step explanation:

The greatest common factor is the largest value two numbers share in common which multiplies to each of the numbers.

7ab has factors 7, a, b

8b^3 has factors 2, 4, 8, b, b, b

These share in common b.

3 0
3 years ago
Claire Drew model of 5/10 explain how Claire could change her model to show how many hundreds are in 5/10 I know this is like my
natta225 [31]

Answer:

There are 0.005 hundreds in 5/10.

Step-by-step explanation:

Claire drew model of 5/10

We want to know how many hundreds are in 5/10.

Let us use an obvious example.

There are three 2's in 6 right?

Suppose we didn't know this, and we are told to find how many 2's are in 6, we get this by representing this in an algebraic expression as:

There are x 2's in 6. This can be written as

2x = 6

Solving for x, by dividing both sides by 2, we have the number of 2's that are in 6.

x = 6/2 = 3.

Now, to our work

We want to find how many hundreds are in 5/10. We solve the equation

100x = 5/10

x = 5/1000 = 0.005

There are 0.005 hundreds in 5/10.

7 0
3 years ago
A prism has a length of 5 meters, height of 6 meters, and width of 1 meter.
Svetradugi [14.3K]

Answer: 30 m3 (meters cubed)

Step-by-step explanation:

To get the volume of a rectangular prism, multiply the width times the length times the height.

1 x 5 x 6 = 30

Add the unit label

4 0
3 years ago
Read 2 more answers
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