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3 years ago

HELP PLZ

Mathematics

2 answers:

nignag [31]3 years ago

5 0

Answer:

The sum of angles 3 , 4 and 5 is 180°

Alternate interior angles are equal

The sum of the measures of the interior angles equal to 180°

Step-by-step explanation:

∵ ∠4 , ∠3 and ∠5 formed a straight angle

∵ The measure of the straight angle = 180°

∴ m∠4 + m∠3 + m∠5 = 180° ⇒ (1)

From the parallelism

m∠4 = m∠1 ⇒ alternate interior angles

m∠5 = m∠2 ⇒ alternate interior angles

By substituting in (1)

∴ m∠1 + m∠3 + m∠2 = 180°

∴ The sum of the measure of the interior angles in a triangle = 180°

vichka [17]3 years ago

3 0

Answer:

WHAT IS THE LAST ANSWER

Step-by-step explanation:

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Elimination_4x_2y=14 _10x+7y=_24

Gnesinka [82]

Answer:

The answer is $x=-\frac{50}{8}$ and $y=\frac{11}{2}.$

Step-by-step explanation:

Given:

-4x-2y=14

-10x+7y=-24

Now, to solve it by elimination:

$-4x-2y=14$ ......(1)

$-10x+7y=-24$ ......(2)

So, we multiply the equation (1) by 7 we get:

$-28x-14y=98$

And, we multiply the equation (2) by 2 we get:

$-20x+14y=-48$

Now, adding both the new equations:

$-28x-14y+(-20x+14y)=98+(-48)$

$-28x-14y-20x+14y=98-48$

$-28x-20x-14y+14y=50$

$-8x=50$

Dividing both the sides by -8 we get:

$x=-\frac{50}{8}$

Now, putting the value of $x$ in equation (1):

$-4x-2y=14$

$-4(-\frac{50}{8})-2y=14$

$\frac{200}{8} -2y=14$

$25-2y=14$

Subtracting both sides by 25 we get:

$-2y=-11$

Dividing both sides by -2 we get:

$y=\frac{11}{2}$

Therefore, the answer is $x=-\frac{50}{8}$ and $y=\frac{11}{2}.$

5 0

3 years ago

????????????????????

Svet_ta [14]

#2- yes because both can be divided or multiplied for example 3 and 9, u can multiply 3x3 to get 9 since the dilation is 3 then yes it is similar triangles

4 0

3 years ago

Write a doubles plus one fact for the sum of 7

gladu [14]

3 + 3 + 1 = 7

3 + 3 are the double ones

+1

=7

8 0

3 years ago

Read 2 more answers

5/3x-4/3x-1=8 solve please

SOVA2 [1]

Answer:x=27

Step-by-step explanation:

3 0

2 years ago

Which number is equal to 3^3?

ruslelena [56]

3 ^ 3 is the same as 3 * 3 * 3

So:

3 * 3 * 3 =
(3 * 3) * 3 =
( 9 ) * 3 =
27

4 0

3 years ago

Read 2 more answers