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3 years ago

Can someone please please please help me it’s ergent

Mathematics

2 answers:

JulsSmile [24]3 years ago

7 0

Answer:

D 192

Step-by-step explanation:

used: new: total

4: 1 : 5

We have 240 stamps

240/5 = 48

Multiply each number by 48

used: new: total

4*48: 1*48 : 5*48

192 : 48 : 240

There are 192 used stamps and 48 new stamps in his collections

yuradex [85]3 years ago

4 0

Answer:

192 used stamps.

Step-by-step explanation:

Since the ratio is 4 used stamps for every new stamp, you can count that as 5 stamps total. Then divide 240 by 5 to get 48. Then multiply that by 4 to get 192.

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Arte-miy333 [17]

Answer:

x = 120°

Step-by-step explanation:

the 165 degree obtuse angle forms a straight line with the upper left angle inside the triangle, therefore this angle measures 15 degrees

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x + 15 + 45 = 180

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2 years ago

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2 years ago

Use quadrilateral ABCD to find the value of x. The figure is not drawn to scale. Use the following dimensions: m⦨ABC = 4x◦, m⦨BC

OLEGan [10]

Answer/Step-by-step explanation:

Question 1:

Interior angles of quadrilateral ABCD are given as: m<ABC = 4x, m<BCD = 3x, m<CDA = 2x, m<DAB = 3x.

Since sum of the interior angles = (n - 2)180, therefore:

$4x + 3x + 2x + 3x = (n - 2)180$

n = 4, i.e. number of sides/interior angles.

Equation for finding x would be:

$4x + 3x + 2x + 3x = (4 - 2)180$

$12x = (2)180$

$12x = 360$

$x = \frac{360}{12}$ (dividing each side by 12)

$x = 30$

Find the measures of the 4 interior angles by substituting the value of x = 30:

m<ABC = 4x

m<ABC = 4*30 = 120°

m<BCD = 3x

m<BCD = 3*30 = 90°

m<CDA = 2x

m<CDA = 2*30 = 60°

m<DAB = 3x

m<DAB = 3*30 = 90°

Question 2:

<CDA and <ADE are supplementary (angles on a straight line).

The sum of m<CDA and m<ADE equal 180°. To find m<ADE, subtract m<CDA from 180°.

m<ADE = 180° - m<CDA

m<ADE = 180° - 60° = 120°

6 0

2 years ago