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postnew [5]
3 years ago
13

-3a + b when a = -4 and b = 9.

Mathematics
2 answers:
harkovskaia [24]3 years ago
5 0
The same as the other answer lol
Archy [21]3 years ago
3 0

Answer:

12+9=21

Step-by-step explanation:

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Please answer this question only if you know the answer!!! :)
Anon25 [30]

A full circle is 360 degrees.

The circle is separated into 8 parts, so each arc is 1/8 of a circle, which equals: 360/8 = 45 degrees.

There are 2 45 degree arcs between B and C, so the arc from B to C = 45 x 2 = 90 degrees.

The answer is B.

6 0
3 years ago
What am I doing sumbody please help
djyliett [7]

Answer:

um, i think its d

Step-by-step explanation:

8 0
3 years ago
Factor this expression completely, then place the factors in the proper location on the grid. 5x3 + 40y6
Molodets [167]
For this case we have the following expression:
 5x3 + 40y6
 Common factor 5:
 5 (x3 + 8y6)
 Factoring the expression within the parenthesis we have:
 5 ((x + 2y2) (x2 - 2xy2 + 4y4))
 Answer:
 
The factored expression is given by:
 
5 ((x + 2y2) (x2 - 2xy2 + 4y4))
6 0
3 years ago
Read 2 more answers
The radius of a cylinder is 3 cm and the height is 6 cm.
Ratling [72]

Answer

Step-by-step explanation:

A=2πrh+2πr2=2·π·3·6+2·π·32≈169.646

5 0
2 years ago
Read 2 more answers
Special right triangles, find x and y
egoroff_w [7]

Answer:

The answer to your question is x = 17.32; y = 8.67

Step-by-step explanation:

Process

1.- Use trigonometric functions to find x and y

   a) sin Ф = \frac{opposite side}{hypotenuse}

      Ф = 60°

      opposite side = 15

      hypotenuse = ?

     hypotenuse = \frac{opposite side}{sin \alpha }

     hypotenuse = \frac{15}{sin 60}

     hypotenuse = \frac{15}{0.87}

            hypotenuse = 17.32

     b) cosФ = \frac{y}{hypotenuse}

         y = hypotenuse x cos 60

         y = 17.32 x 0.5

                y = 8.67

5 0
3 years ago
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