All categories

2 years ago

17 to 26 Help me please

Mathematics

1 answer:

Pepsi [2]2 years ago

4 0

Answer:

See below

Step-by-step explanation:

17. 17x + 3 x=4 18. -2x + 1 / 3 x= -5

17(4) + 3 - [(2)(-5) + 1] / 3

68 + 3 - [-10 + 1] /3

71 9/3 or 3

19. 2x - 33 x=9 20. - 9x - 2 x=7

(2)(9) - 33 -(9)(7) - 2

18 - 33 -63 - 2

- 15 -65

21. 7/3x - 9 x=3 22. - [12x/5] x= -1

(7/3)(3) - 9 - [(12)( -1)/5]

7 - 9 - [ -12/5 ]

-2 2.4

23. 11x - 11 x = -11 24. (2/9)x - (9/2) x= 9

- 121 - 11 (2/9)(9) - (9/2)

-132 2 - (9/2) ( 2 can be shown as 4/2)

(4/2) - (9/2)

- 5/2 or - 2.5

25. f(x) = 0.12x + 4.52 x = 250 26. f(x) = 0.18x + 3.12 x= 175

= (0.12)(250) + 4.52 = (0.18)(175) + 3.12

= 30 + 4.52 = 31.50 + 3.12

= 34.52 = 34.62

You might be interested in

Brianne evaluated the expression 42+4(6-2)

Levart [38]

Answer:

Follow the rule of BODMAS (brackets, of, division, multiplication, addition, subtraction)

Ans: 58

Step-by-step explanation:

42 + 4(6 - 2) Process --> 6 - 2 = 4

= 42 + 4 * 4 Process --> 4 * 4 = 16

= 42 + 16 Process --> 42 + 16 = 58

= 58

Hope this helps :)

6 0

2 years ago

Distribute and simplify the radicals below (√12+6)(-√8-√2)

Hatshy [7]

For this case we have the following expression:

$(\sqrt {12} +6) (- \sqrt {8} - \sqrt {2})$

We apply distributive property:

$(\sqrt {12} * - \sqrt {8}) + (\sqrt {12} * - \sqrt {2}) + (6 * - \sqrt {8}) + (6 * - \sqrt {2} ) =\\- \sqrt {96} - \sqrt {24} -6 \sqrt {8} -6 \sqrt {2} =$

We rewrite in equivalent form:

$- \sqrt {4 ^ 2 * 6} - \sqrt {2 ^ 2 * 6} -6 \sqrt {2 ^ 2 * 2} -6 \sqrt {2} =\\-4 \sqrt {6} -2 \sqrt {6} -6 * 2 \sqrt {2} -6 \sqrt {2} =$

$-4 \sqrt {6} -2 \sqrt {6} -12 \sqrt {2} -6 \sqrt {2} =\\-6 \sqrt {6} -18 \sqrt {2}$

Answer:

$-6 \sqrt {6} -18 \sqrt {2}$

8 0

2 years ago

Read 2 more answers

Find the product <br> (7x^2y^3)(3x^5y^8)

brilliants [131]

Hello!

$\large\boxed{21x^7y^{11}}}$

(7x²y³)(3x⁵y⁸)

Multiply by ADDING exponents with the same base:

(7 * 3) (x² * x⁵) (y³ * y⁸)

21 * x² ⁺ ⁵ * y³ ⁺ ⁸

Simplify:

21 * x⁷ * y¹¹

21x⁷y¹¹

4 0

2 years ago

Read 2 more answers

Select all the correct answers.

Vlad1618 [11]

Answer:

The measure of reference angle is $30^{\circ}$ .
$\cos \theta=\frac{\sqrt{3}}{2}$

Step-by-step explanation:

Converting $\theta$ to degrees,

$\theta=\left(\frac{11\pi}{6} \right) \left(\frac{180}{\pi} \right)=330^{\circ}$

This means $\theta$ lies in Quadrant 4, and thus its reference angle is $360^{\circ}-330^{\circ}=\boxed{30^{\circ}}$

Since $\theta$ lies in the fourth quadrant, $\sin \theta$ and $\tan \theta$ are negative.

Since $\theta$ lies in the fourth quadrant, $\cos \theta$ is positive, and is equal to $\cos (30^{\circ})=\boxed{\frac{\sqrt{3}}{2}}$

3 0

1 year ago

It rained 0.72 inches on Monday. On Tuesday, it rained 0.34 inches less than on Monday.

vodomira [7]

Answer:0.38 inch

Step-by-step explanation: If it rains 0.72 inch on Monday and on Tuesday it rains 0.34 less inch then, you would have to subtract them to get 0.38 inch aka answer.

8 0

2 years ago

Read 2 more answers