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kumpel [21]
3 years ago
13

Please help! will give brainliest for the best helper! or first to answer aka meaning first to help :)

Mathematics
1 answer:
AleksAgata [21]3 years ago
4 0

Answer:

angle 2 = 37º

Step-by-step explanation:

When two lines intersect they make vertical angles, which are angles directly across from another. Vertical angles are always congruent.

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Is 645 round to 600 when rounded to the nearest ten
Juliette [100K]
No
645 becomes 650 when rounded to the nearest ten
645 becomes 600 when rounded to the nearest hundred
6 0
3 years ago
What is the constant variation of 2x+y=-4?
jeka94

Answer:

What is the constant variation of Y =- 2 3x?

The constant of variation, k , is 23 .

What is the constant variation of Y 1 2x?

The constant of variation, k , is 12 .

Step-by-step explanation:

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5 0
3 years ago
I forgot how to find the x coordinates for the intersection already :( I will be very much appreciated if I could get a step by
mr_godi [17]

In the graph,

Amplitude = 1.5 units

Period = 180°

The x-intercepts are 40°, 140°, 220°, and 320°

<h3>Determining x-intercepts </h3>

From the question, we are to determine the amplitude, period and the x-intercepts of the given graph

Amplitude is the distance from rest to crest.

In the graph,

Amplitude = 1.5 units

Period is how long from crest to crest OR trough to trough

In the graph,

Period = 180°

x-intercepts refers to the points where the graph cuts the x-axis

In the graph,

The x-intercepts are 40°, 140°, 220°, and 320°

Learn more on Determining x-intercepts here: brainly.com/question/24148225

#SPJ1

6 0
2 years ago
0.12 over 0.20 as a percent
Afina-wow [57]
\dfrac{0.12}{0.2}  =  \dfrac{0.12 \times 100}{0.2 \times 100} =  \dfrac{12}{20}

\dfrac{12}{20} \times 100 = 60\%
5 0
3 years ago
Just answer what it asks in the picture PLEASE
Molodets [167]

m∠1 = 30° (by Vertical angle theorem)

m∠A = 80° (by Triangle sum theorem)

m∠D = 80° (by Triangle sum theorem)

The value of x is 7.5 and y is 9.

Solution:

∠ACB and ∠DCE are vertically opposite angles.

Vertical angle theorem:

<em>If two lines are intersecting, then vertically opposite angles are congruent.</em>

⇒ m∠DCE = m∠ACB

⇒ m∠1 = 30° (by Vertical angle theorem)

In triangle ACD,

Triangle sum property:

<em>Sum of the interior angles of the triangle = 180°</em>

⇒ m∠A + m∠C + m∠B = 180°

⇒ m∠A + 30° + 70° = 180°

⇒ m∠A + 100° = 180°

⇒ m∠A = 100° – 180°

⇒ m∠A = 80° (by Triangle sum theorem)

Similarly, m∠D = 80° (by Triangle sum theorem)

In ΔACD and ΔDCE,

All the angles are congruent, so ΔACD and ΔDCE are similar triangles.

<em>In similar triangle corresponding sides are in the same ratio.</em>

$\frac{9}{12}=\frac{x}{10}

Do cross multiplication.

90 = 12x

7.5 = x

Now, to find y:

$\frac{9}{12}=\frac{6}{y}

Do cross multiplication.

9y = 72

Divide by 9, we get

y = 8

Hence the value of x is 7.5 and y is 9.

7 0
3 years ago
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