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3 years ago

Help! Help! Help! Help!

Mathematics

1 answer:

alexgriva [62]3 years ago

6 0

A. C(n)=10n+125

cost×number of buttons is equal to 10 cents times the number of buttons, plus the $125 cost of the button machine

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elixir [45]

Answer:

r = 10 or -10

Step-by-step explanation:

8 0

3 years ago

The area of a rectangle is 144cm squared. The length of the rectangle is 8 cm. What is the measure of the width of the rectangle

Gelneren [198K]

<h2>Greetings!</h2>

Answer:

The width is 18cm

Step-by-step explanation:

If the equation of the area of a rectangle is:

Area = length * width

Then you substitute in the values you know:

144 = 8 * width

To find the width you need to rearrange the formula to make the width the subject. Do this by dividing the area by the length:

Width = 144 / 8

Width = 18

So the width is 18cm

<h2>Hope this helps!</h2>

3 0

3 years ago

NO LINKS!!! Find the measurement indicated. Round your answer to the nearest tenth.

My name is Ann [436]

Answer:

Solutions given;

Using cosine rule

b²=a²+c²-2*a*c*cos B°

b²=15²+8²-2*15*8*cos39

b²=102.48

b= $\sqrt{102.48}$

b=10.12

b=10.1

Using sine rule

$\frac{sin A}{BC} = \frac{sin B}{AC} =\frac{sin C}{AB}$

$\frac{sin 29°}{15} =\frac{sin C}{8}$

Doing criss cross multiplication

Sin C= $\frac{sin 29°}{15} ×8$

m<C=Sin -¹(0.29)

m<C=14.98

m<C=15°is a required answer.

4 0

3 years ago

Can you answer this one for my plz I need before Monday ty

ira [324]

Since you need the vertex, and knowing the vertex will tell you the axis of symmetry, it is convenient to put the equation in vertex form.
.. -x^2 -4x +1
.. = -(x^2 +4x) +1
.. = -(x^2 +4x +(4/2)^2) +1 -(-(4/2)^2) . . . . complete the square
.. = -(x +2)^2 +5

The vertex is (-2, 5).
The axis of symmetry is x = -2.

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3 years ago

What expression is equivalent to ( X 3 ) 4 ?

lianna [129]

Answer:

Step-by-step explanation:

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3 years ago