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3 years ago

You sign up for karate classes. The classes cost $80 per

Mathematics

1 answer:

lyudmila [28]3 years ago

4 0

Answer:

m* = d**

1 = $80

2 = $160

3 = $240

4 = $320

*months

**Dollars ($)

Step-by-step explanation:

If it costs 80 per month then you times 80 by the number of months you want to work out. For example, you want to work out the cost of going to karate class for 3 months, and it costs $80 per month. Then you do $80 × 3 = $240.

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Help me find #18 AND #19 PLEASEEE THANK YOUUUUU

Ne4ueva [31]

Answer:

see explanation

Step-by-step explanation:

(18)

Since BD is an angle bisector , then

∠ DBC = ∠ ABD = 57°

∠ ABC = ∠ ABD + ∠ DBC = 57° + 57° = 114°

(19)

Since BD is an angle bisector , then ∠ ABD = ∠DBC

∠ ABC = 110° , so

∠ ABD = ∠ DBC = 110° ÷ 2 = 55°

4 0

3 years ago

The submarine is currently located at 10,000 feet below sea level but then rises 5,200. Where is the

Ilia_Sergeevich [38]

Answer:

A. 4,800 feet below sea level

Step-by-step explanation:

10,000 feet below sea level = -10,000 feet

"rises 5,200 feet" = +5,200 feet

=-10,000 + 5,200 = -4,800 feet

=4,800 feet below sea level.

8 0

3 years ago

Dilate the the triangle, scale factor = 3 (positive 3, ignore the

HACTEHA [7]

Answer:

The rule of dilation is $P'(x,y) = 3\cdot P(x,y)$ .

The vertices of the dilated triangle are $A'(x,y) = (-21, -18)$ , $B'(x,y) = (-15,-10)$ and $C'(x,y) = (-3,-15)$ , respectively.

Step-by-step explanation:

From Linear Algebra, we define the dilation by the following definition:

$P'(x,y) = O(x,y) + k\cdot[P(x,y)-O(x,y)]$ (1)

Where:

$O(x,y)$ - Center of dilation, dimensionless.

$k$ - Scale factor, dimensionless.

$P(x,y)$ - Original point, dimensionless.

$P'(x,y)$ - Dilated point, dimensionless.

If we know that $O(x,y) = (0,0)$ , $k = 3$ , $A(x,y) = (-7,-6)$ , $B(x,y) = (-5,-2)$ and $C(x,y) =(-1,-5)$ , then dilated points of triangle ABC are, respectively: