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4 years ago

GEOMETRY

Mathematics

2 answers:

Ivenika [448]4 years ago

7 0

Supplementary angles are two angles whose measures have a sum of 180 degrees

Complementary angles are two angles whose measures have a sum of 90 degrees

Oliga [24]4 years ago

4 0

<h2>Answer:</h2>

The correct choice among the given choices is:

Option: a

a. 180° ; 90°

<h2>Step-by-step explanation:</h2>

Supplementary angles are two angles whose measures have a sum of 180 degree.

( for example the two angles adjacent to each other on a straight line are supplementary )

Complementary angles are two angles whose measures have a sum of 90 degrees.

( For example--

The diagonal of a square divides the angle into two parts such that both the angles sum up to 90 degrees.

Hence, the two angles are complementary )

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What Solution set of the equation 9x^2 +6x = -1

coldgirl [10]

Answer:

$x=\{- \frac{1}{3}\}$

Step-by-step explanation:

$9x^2 +6x = -1 \\ \\ 9x^2 +6x + 1 = 0\\ \\ {(3x + 1)}^{2} = 0 \\ \\ 3x + 1 = 0 \\ \\ 3x = - 1 \\ \\ x = - \frac{1}{3}\\\\x=\{- \frac{1}{3}\}$

7 0

3 years ago

The students at view side elementary school had a read a thon the teachers kept track of how many books the students in each gra

inn [45]

Answer:

Estimate = 3400 books

Step-by-step explanation:

Given that:

Books read by students.

Kindergarten 247

First grade 385

Second grade 1347

Third grade 1549

We have to round the each number to nearest hundred.

247 rounded to the nearest hundred is 200.

385 rounded is 400

1347 rounded is 1300

1549 rounded is 1500

Total = 200 + 400 + 1300 + 1500 = 3400

Hence,

Estimate = 3400 books

4 0

3 years ago

Shelley is 15 and has a goal of saving $800 toward her prom and senior trip in 2 years; right now she has $20 total. She's plann

Dimas [21]

Answer:

The answer is "Do her friends have accounts at the same bank?"

Step-by-step explanation:

In this question, the above given-choice is correct because the account on the same bank has certainly, but when a retirement fund in a company is concerned, you could only have a savings account on their behalf, and the mutual funds must then be distributed, and these several savings accounts can be opened is by tracking the amount they need to save for every savings target.

6 0

3 years ago

Triangle P Q R is shown. Angle P Q R is a right angle. The length of hypotenuse P R is q, the length of P Q is r, and the length

mojhsa [17]

The cosine ratios which are correct for the ΔPQR are CosineP = r/q and CosineR = p/q.

We have,

Δ PQR,

Length of hypotenuse PR = q

The length of PQ = r,

And the length of QR = p

NOw,

We know that Trigonometric ratios of CosineΘ;

CosineΘ = Base/Hypotenuse

So,

CosineP = r/q

And,

CosineR = p/q

So, from the above find out values we can say that these values are given in option (a) and option (d).

Therefore, the cosine ratios which are correct for the ΔPQR are CosP = r/q and CosR = p/q.

Learn more about Trigonometric ratios here:

brainly.com/question/13724581

#SPJ10

8 0

2 years ago

Anyone know how to solve this?

AnnyKZ [126]

Answer:

b = 22

Step-by-step explanation:

Here b represents the length of the hypotenuse, and 11 is the length of the side opposite the 30 degree angle. We want to find the value of b. We use the sine function here because we have the angle measurement (b), the angle 30 degrees and the "opposite side" 11:

sin 30 degrees = (1/2) = 11/b, which, if inverted, is 2 = b/11, or b = 22

6 0

3 years ago

*GEOMETRY*

GEOMETRY