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2 years ago

14

Which of the terms cannot be combined with the others? -3x 4x 2 x 11x

2 answers:

Juli2301 [7.4K]2 years ago

7 0

the awnser is 4x^2

I hope I helped

Leto [7]2 years ago

3 0

The thing that can’t be together is the -3x

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Solve x2 = 12x – 15 by completing the square. Which is the solution set of the equation? Solve x2 = 12x – 15 by completing the s

Svetlanka [38]

Answer: $6+\sqrt{21}\ \text{and}\ 6-\sqrt{21}$

Step-by-step explanation:

Given

Quadratic equation is

$x^2-12x+15=0$

Solving by completing the square method

$\Rightarrow x^2-2\cdot 6\cdot x+15=0\\\text{add and subtract 36}\\\Rightarrow x^2-2\cdot 6\cdot x+15+36-36=0\\\Rightarrow x^2-2\cdot 6\cdot x+36+(-36+15)=0\\\text{using}\ (a-b)^2=a^2+b^2-2ab\\\Rightarrow (x-6)^2-21=0\\\Rightarrow (x-6)^2=21\\\Rightarrow x-6=\pm \sqrt{21}\\\Rightarrow x=6\pm \sqrt{21}$

The solution set of the equation is $6+\sqrt{21}\ \text{and}\ 6-\sqrt{21}$

6 0

2 years ago

Read 2 more answers

Who can solve this please

Vladimir79 [104]

Answer:

Shape 1 = l×b

= (6x²y) × (4y²)

Shape 2 = l×b

= (6x²y+2x²y)×(y²)

= (8x²y) × y²

Step-by-step explanation:

If you like my answer than please mark me brainliest thanks

8 0

2 years ago

Find the volume of the cone.

8_murik_8 [283]

Answer:

$V=471\ \text{units}^3$

Step-by-step explanation:

Given that,

Radius of the cone, r = 5 units

Height of the cone, h = 6 units

We need to find the volume of the cone. The formula for the volume of the cone is given by :

$V=\pi r^2 h$

Substitute all the values,

$V=3.14\times 5^2\times 6\\\\V=471\ \text{units}^3$

So, the volume of the cone is $471\ \text{units}^3$ .

4 0

2 years ago

An article reported that for a sample of 55 kitchens with gas cooking appliances monitored during a one-week period, the sample

Sati [7]

Answer:

Step-by-step explanation:

Given that

sample size n = 55: x bar = 654.16 and s = sample sd = 162.34

Std error = 162.34/sqrt 55 = 21.889

For 95% CI we can use t critical value as population std dev is not known.

df = 54

t critical = 2.004

Margin of error = 2.004 *21.889 = 43.866

Confidence interval lower bound = 654.16-43.866 =610.294

Upper bound = 654.16+43.866=698.026

Confidence interval rounded off at 95% = (610.29, 698.23)

8 0

2 years ago

4/5-11/15 can you help me?

Ainat [17]

Answer:

$\frac{1}{15}$ is the answer.

Step-by-step explanation:

$\frac{4}{5} - \frac{11}{15}$

Change the denominators to 15.

$\frac{12}{15} - \frac{11}{15}$

12 - 11 = 1.

= $\frac{1}{15}$

5 0

1 year ago