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dmitriy555 [2]
3 years ago
14

Subtract 9x2 – 7x from – 4x2 + 6.

Mathematics
1 answer:
Sunny_sXe [5.5K]3 years ago
8 0

Answer:

-4x^2 + 6 - 9x^2 + 7x

-13x^2 - 7x + 6

Step-by-step explanation:

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Please help!!<br> (This is Algebra 1!)
yKpoI14uk [10]

Answer:

$242.78

Step-by-step explanation:

Given :

Room cost for 1 night = $199

Tax rate = 22% or 0.22

Tax for room for 1 night = 0.22 x $199 = $43.78

Total cost for one night,

= room cost + tax

= $199 + $43.97

= $242.78

5 0
3 years ago
The equation for the pH of a substance is pH = –log[H+], where H+ is the concentration of hydrogen ions. Which equation models t
Zanzabum

Answer:  [H+] = 10^-7.2

Step-by-step explanation:

Given that the PH of the solution = 7.2

Using the formula pH = –log[H+]. To get the H+ concentration from the pH, raise both sides by the base of 10. Then we have

10^ -pH = H+. with pH of 7.2,

Thus the answer to this problem is

[H+] = 10^-7.2

8 0
3 years ago
What is the value of x?<br><br><br><br> Enter your answer in the box.
charle [14.2K]

Hi there!

We know that RST is an equilateral(all 3 sides the same length) triangle, and is therefore equiangular(all 3 angles the same value).  Therefore, angle S and is equal to one-third of the triangle's angle measure.  

180/3=60

60=7x+4

56=7x

x=8

-AwesomeRepublic  :)

4 0
4 years ago
Read 2 more answers
What is the approximate volume of the cylinder? Use 3.14 for π.<br> 9 Hight and 4 length.
krek1111 [17]

Answer:

113.04

Step-by-step explanation:

Radius(r)= 4/2 = 2

Volume = r² x π x h

⇒ 4 x 3.14 x 9 = 113.04 (when using pi = 3.14)

hope this helps!

5 0
3 years ago
What is the equation of the line that passes through the point (3,2) and has a slope of 2/3 ​
Sladkaya [172]

Answer:

y= ⅔x +1

Step-by-step explanation:

(3,2) = (x_1,y_1) \\  m =  \frac{2}{3}

Substitute values into point slope form

y -y_1 = m(x - x_1) \\ y - 2 =  \frac{2}{3} (x - 3) \\ y - 2 =  \frac{2}{3} x - 1 \\

y =  \frac{2}{3} x - 1 + 2 \\ y =  \frac{2}{3} x + 1

5 0
3 years ago
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