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RoseWind [281]
3 years ago
6

Solve the inequality and express your answer in interval notation. x + 8x-7 <0

Mathematics
1 answer:
earnstyle [38]3 years ago
3 0

Answer:

x<7/9

Step-by-step explanation:

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I WILL MARK BRAINLIEST PLEASE HELP! This graph represents f(x), and g(x) = -7x + 8.
Leviafan [203]

Answer:

A

Step-by-step explanation:

ITS OPTION (A)

PLZ MARK ME BRAINLIEST..

4 0
3 years ago
Find the unit rate of 152 people for 5 classes
cluponka [151]
unit\ rate=\frac{number\ of\ people}{number\ of\ classes}\\\\unit\ rate=\frac{152}{5}=30.4\frac{people}{class}\\\\&#10;Unit\ rate \ is\ equal\ to\ 30.4\ people\ per\ class.
8 0
4 years ago
A architect wants to create a rectangular room in a house. She wants it to have a total area of 255 square feet, and it should b
Alex787 [66]

Answer:

The answer to your question is length = 21.73 and width = 11.73

Step-by-step explanation:

Data

Total area = 255 ft²

length = x + 10

width = x

Formula

Area of a rectangle = length x width

Substitution

          255 = (x + 10)(x)

Expand

           255 = x² + 10x

Equal to zero

           x² + 10x - 255 = 0

Solve with the quadratic formula

x = \frac{-10 +- \sqrt{10^{2} -4(1)(-255)}}{2(1)}

x = \frac{-10 +-\sqrt{100 + 1020}}{2}

x = \frac{-10 +- \sqrt{1120}}{2}

x = \frac{-10 +- 33.47}{2}

x₁ = 11.73                x₂ = -21.73

There are no negative dimensions so the answer is 11.73.

Length = 11.73 + 10 = 21.73 ft

6 0
3 years ago
Based on the side lengths alone, could the triangles be similar? 16.0 cm R 6.4 cm 3.0 cm 15.0 cm S T 6.0 cm X 7.5 cm U
Bumek [7]

Answer:

Yes, the sides are in the ration 2:5!

Step-by-step explanation:

Hope this helps.

3 0
3 years ago
Read 2 more answers
Which function is the inverse of f(x)= B^X
Scrat [10]

Answer:

Step-by-step explanation:

Let's retype that as y = b^x.  The inverse of this function is log    y = x  

                                                                                                        b

which you could also write as  y = ln     x

                                                             b

If you had y = e^x, the inverse function would be y = ln x.

Note that if you let ln x be the input to y = e^x, the result would be just 'x,' which confirms that these two functions are inverses of one another.

8 0
4 years ago
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