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2 years ago

A scale of 1 cm to 8 km is used for a map.

Mathematics

1 answer:

-Dominant- [34]2 years ago

7 0

Answer:

40 km^2

16 cm^2

Step-by-step explanation:

A scale drawing is a reduced form in terms of dimensions of an original image / building / object

the scale drawing is usually reduced at a constant dimension

scale of the drawing = original dimensions / dimensions of the scale drawing

Actual area = scale factor x scaled area

8 x 5 = 40 km^2

Scaled area on the map = 128.8 = 16 cm^2

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One angle of an isosceles triangle measures 138°. Which other angles could be in that isosceles triangle?

BartSMP [9]

Answer:

2 21 degree angles

Step-by-step explanation:

An isosoles triangle has two congruent angles and every triangle's sum of interior angles equals 180 degrees. 138*2>180, so the 138 degree angle cannot be congruent to any of the other angles. Therefore:

180=138+2x

42=2x

21 degrees=x

3 0

2 years ago

The function f(x) = x2 is transformed to f(x) = −1.4x2. Which statement describes the effect(s) of the transformation on the gra

Romashka-Z-Leto [24]

Answer:

C) The parabola is narrower and reflected across the x-axis.

Step-by-step explanation:

The original parabola has equation:

$f(x) = {x}^{2}$

The transformed parabola has equation

$f(x) = - 1.4 {x}^{2}$

How wide the graph is can be determined by the absolute value of the coefficient.

The smaller the absolute value of the coefficient, the wider the graph.

Since

$|1| \: < \: | - 1.4|$

The original graph is wider than the transformed graph.

Also the negative factor tells us there is a reflection in the x-axis.

3 0

2 years ago

Help please due soon

mestny [16]

The think the answer is c

7 0

2 years ago

The sum of two numbers is 128. Their difference is 4. What are the numbers?

Naddik [55]

Answer:

66 and 62

Step-by-step explanation:

128 divided by 2 gives you 64, and by taking two away from one number and giving it to the other, you're final answers are 66 and 62

3 0

2 years ago

Read 2 more answers

PLEASE HELP<br><br><br> h(1) =<br> and h(4) =

Alekssandra [29.7K]

Putting in h(1) would get you 1, putting in h(4) would get you 5.

4 0

2 years ago