3 years ago

1 times a number is 10 less than 2 times the number

Mathematics

1 answer:

sweet-ann [11.9K]3 years ago

6 0

Use x to represent “a number”
1x=10-2x

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Dmitry [639]

Consider the triangle (in which angle4 is present)

by angle sum property,

20 + 40 + angle4 = 180

60 + angle4 = 180

angle4 = 180 - 60

angle4 = 120

Also,

angle2 = 120 (vertically opposite angles)

angle1 + angle2 = 180 (linear pair)

angle1 + 120 = 180

angle1 = 180 - 120

angle1 = 60

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3 years ago

Which answer shows 9 times 10 Superscript negative 5 written in standard form? –0.000009 –0.00009 0.0009 0.00009

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4 years ago

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3 years ago

What is 2/4 + 4/5 - 7/10 ? Please help

Radda [10]

Make sure they have all common denominators
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$\frac{4}{5} * \frac{4}{4} = \frac{16}{20}$

$\frac{7}{10} * \frac{2}{2} = \frac{14}{20}$

$\frac{10}{20} + \frac{16}{20} - \frac{14}{20}$

Add $\frac{10}{20} + \frac{16}{20} = \frac{26}{20}$
$\frac{26}{20} - \frac{14}{20} = \frac{12}{20}$

To simplify, you must find the largest common factor which 4
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Answer:

Step-by-step explanation:

Side-angle-side.

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3 years ago