4 years ago

I don't understand #9

Mathematics

1 answer:

Margarita [4]4 years ago

4 0

They are not that large. (?)

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On a map, a distance of 2 cm represents 15 km. What is the distance (in km) between two cities that are 11 cm apart on the map?

GenaCL600 [577]

Answer:

82.5 km

Step-by-step explanation:

Given:

$\frac{2cm}{15km} =\frac{11cm}{?km}$

Cross-multiply.

2x = 11(15)

Divide both sides by 2 and solve for x.

x = 82.5 km

Please mark as Brainliest! :)

6 0

4 years ago

Directions - For the following problem, write a paragraph proof to justify each step you make. All work must be neat,

nlexa [21]

$$ PS = \frac{4}{3} x$

Solution:

Given PRQ is a triangle.

ST is a line parallel to RQ.

$$PT = x, \ PQ = 3x, \ SR=\frac{8}{3}x$

$TQ=PQ-PT$

$TQ=3x -x=2x$

Triangle proportionality theorem,

If a line parallel to one side of a triangle intersects the other two sides, then it divides the two sides proportionally.

$$\frac{PS}{SR} =\frac{PT}{TQ}$

$$\frac{PS}{\frac{8}{3} x} =\frac{x}{2x}$

Do cross multiplication, we get

$$ PS \times 2x=x \times \frac{8}{3} x$

Divide by 2x on both sides, we get

$$ PS = \frac{4}{3} x$

4 0

3 years ago

A. 27% B. 37.5% C. 62.5% D. 75%

scZoUnD [109]

B. Should be the correct answer

7 0

3 years ago

Read 2 more answers

10. Which represents the number of lines of symmetry that are possessed by a regular n-gon?

Irina18 [472]

Answer:

two n-gons hcogxigvugbu

6 0

3 years ago

If arc AB = 70°, how many degrees are in ∠ ADB?

tankabanditka [31]

If D is the center of the circle, ∠ADB = 70°, as that is where the arc gets its measure.

If D is on the circle and not on the arc, ∠ADB = 35°, half the measure of the arc's central angle.

If D is on arc AB, then ∠ADB = 145°, half the measure of the corresponding central angle.

If D is inside or outside the circle (and not one of the above), we need to know more about the measures of arcs intercepted by lines AD and BD.

5 0

3 years ago