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3 years ago

-7 x -8 = 56 True or False

Mathematics

2 answers:

dalvyx [7]3 years ago

8 0

Answer:

true negative ×negative =positive

yKpoI14uk [10]3 years ago

6 0

Answer:

True

Step-by-step explanation:

n= negative

p= positive

n*n=p

p*p=p

n*p=n

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How do I solve equations with fractions?

ratelena [41]

2y - 3/5 = 1/2

Add 3/5 to both sides.

2y = 1/2 + 3/5

Let's make the two fractions have common denominators.
Multiply 1/2 by 5/5 and 3/5 by 2/2.
1/2 * 5/5 = 5/10
3/5 * 2/2 = 6/10

2y = 5/10 + 6/10

Add the two fractions.

2y = 11/10

Divide both sides by 2.

11/10 ÷ 2
Use the Keep, Change, Flip method.
Keep 11/10, change ÷ to ×, and flip the 2 (reciprocal).
11/10 × 1/2 = 11/20

y = 11/20

4 0

3 years ago

What is 720° converted to radians? <br> a) 1/4<br> b) pi/4<br> c) 4/pi<br> d) 4pi

baherus [9]

4π radians

<h3>Further explanation</h3>

We provide an angle of 720° that will be instantly converted to radians.

Recognize these:

$\boxed{ \ 1 \ revolution = 360 \ degrees = 2 \pi \ radians \ }$
$\boxed{ \ 0.5 \ revolutions = 180 \ degrees = \pi \ radians \ }$

From the conversion previous we can produce the formula as follows:

$\boxed{\boxed{ \ Radians = degrees \times \bigg( \frac{\pi }{180^0} \bigg) \ }}$
$\boxed{\boxed{ \ Degrees = radians \times \bigg( \frac{180^0}{\pi } \bigg) \ }}$

We can state the following:

Degrees to radians, multiply by $\frac{\pi }{180^0}$
Radians to degrees, multiply by $\frac{180^0}{\pi }$

Given α = 720°. Let us convert this degree to radians.

$\boxed{ \ \alpha = 720^0 \times \frac{\pi }{180^0} \ }$

720° and 180° crossed out. They can be divided by 180°.

$\boxed{ \ \alpha = 4 \times \pi \ }$

Hence, $\boxed{\boxed{ \ 720^0 = 4 \pi \ radians \ }}$

- - - - - - -

<u>Another example:</u>

Convert $\boxed{ \ \frac{4}{3} \pi \ radians \ }$ to degrees.

$\alpha = \frac{4}{3} \pi \ radians \rightarrow \alpha = \frac{4}{3} \pi \times \frac{180^0}{\pi }$

180° and 3 crossed out. Likewise with π.

Thus, $\boxed{\boxed{ \ \frac{4}{3} \pi \ radians = 240^0 \ }}$

<h3>Learn more </h3>

A triangle is rotated 90° about the origin brainly.com/question/2992432
The coordinates of the image of the point B after the triangle ABC is rotated 270° about the origin brainly.com/question/7437053
What is 270° converted to radians? brainly.com/question/3161884

Keywords: 720° converted to radians, degrees, quadrant, 4π, conversion, multiply by, pi, 180°, revolutions, the formula

6 0

3 years ago

Read 2 more answers

Select which type of polygon this figure is.

Naya [18.7K]

Answer:

Step-by-step explanation:

A is not correct. A trapezoid does not have 4 equal sides.

B is not correct. Same reason as A even if the trapezoid is isosceles.

C is not correct. A square has 4 equal sides and 2 sets of parallel lines and 1 right angle. That is not what this figure looks like.

D is the correct answer.

E is incorrect. A rectangle has 2 pairs of equal sides and two sets of opposite sides that are equal and parallel. It also has at least 1 right angle.

The original figure has none of these things.

6 0

3 years ago

Please awnser two more questions after this

xenn [34]

Answer:

J(-9,-5)

K(-9,3)

L(0,-2)

M(0,-5)

6 0

2 years ago

Which of the following tells how to change a measurement from millimeters to meters?

Natali [406]

Answer:

1 millimeter = 0.001 meter

Step-by-step explanation:

Divide the length value by 1000

Ex: 4 millimeter = 0.004

8 0

3 years ago

Read 2 more answers