help ??!!! pleaseee loll

Answer:

Step-by-step explanation:

\boxed { \pink { m^{2} - n^{2} = ( m + n )( m - n ) }}

A. ( 2a + \_ )( 2a - \_ ) = 4a^{2} - b^{2}

RHS = 4a^{2} - b^{2} \\= (2a)^{2} - b^{2} \\= ( 2a + \pink {b} )( 2a - \pink {b} )

B. ( 5x + \_ )( 5x -\_ ) = 25x^{2} - 0.16y^{4}

RHS = 25x^{2} - 0.16y^{4}\\= (5x)^{2} - (0.4y^{2})^{2} \\= ( 5x +\pink {0.4y^{2} })( 5x - \pink { 0.4y^{2}} )

Answer:

   16 square units

Step-by-step explanation:

The area of a triangle is given by the formula ...

  A = 1/2bh

Here, it is convenient to choose the base as the vertical segment between y=-5 and y=3. Its length is 3 -(-5) = 8 units.

The height of the triangle is the difference in x-coordinates between that segment and the opposite vertex: 6 -2 = 4.

Then the area is ...

  A = 1/2(8)(4) = 16 . . . square units

Answer:

78

Step-by-step explanation:

Let the number be y

45/100 * y = 54

y = 120

The number is therefore 120

Hence, 65% of 120 is 78

Answer:

fraction form 3/4

decimal form 0.75

percentage form 75%

Step-by-step explanation:

Answer:$607.72

Step-by-step explanation: it’s a lot simpler than it looks. Since x represents the price of the item, you’ll have to substitute 12 dollars for x.

Making the equation, -3.42(12)^2+173.64(12)-983.48

Step-by-step explanation:

100% = 33,000 ft

1% = 100%/100 = 33000/100 = 330 ft

6% = 1% × 6 = 330 × 6 = 1980 ft

that means the plane has to go down 1980 ft to

33,000 - 1980 = 31,020 ft

and then it goes up by 5000 ft :

31,020 + 5000 = 36,020 ft

that is the final altitude.

Answer:

The final altitude of the airplane is 36,020

Step-by-step explanation:

I took the test

Answer:

√135 135. Rewrite 135 135 as 32 ⋅15 3 2 ⋅ 15. Tap for more steps... Factor 9 9 out of 135 135. √ 9 ( 15) 9 ( 15) Rewrite 9 9 as 3 2 3 2. √ 3 2 ⋅ 15 3 2 ⋅ 15.

Answer:

14.62

Step-by-step explanation:

3 and (+) square root of 135

3 + square root of 135 (11.62)

3 + 11.62

14.62

Hope this helps!

Answer:

Yes

Step-by-step explanation:

3/5, 1/2, 2/3, and 3/4 must be 3 or lower if added together.

We need to find the LCM of the denominators. The LCM, or lowest common multiple, of the denominators is 60. So we have to multiply the fractions by the LCM and add them up.

36 + 30 + 40 + 45 = 151.

60 x 3 = 180.

151 isn't up to 180, so yes. And also, if you divide 151 by 60, you would get 2.52 approximately.

Answer:

8

Step-by-step explanation:

3y - 2y + 3 - y + 5

y + 3 - y + 5

3 + 5

8

hope this helps :]

Answer:

8

Step-by-step explanation:

3y - 2y + 3 - y + 5

(3y - 2y - y) + (3 + 5)

0 + 8

8

Hope this helps!

Answer:

Step-by-step explanation:

The 8-cm diameter sphere has a radius of 4 cm. The volume of it is given by ...

  V = 4/3πr³ = 4/3π(4 cm)³ = 256/3π cm³

The 8-cm cube has a volume of ...

  V = s³

  V = (8 cm)³ = 512 cm³

The volume of the empty space is the difference of these volumes:

  space = 512 cm³ -256/3π cm³ = 256(6 -π)/3 cm³

  space ≈ 243.9 cm³

__

The area of a hemisphere is twice the area of a circle with the same radius. Then the area of the top and bottom of the birdbath will be 2+1 = 3 times the area of a circle with radius 30 cm.

  top+bottom area = 3 × πr² = 3 × 22/7(30 cm)² = 8485 5/7 cm²

The lateral area of the cylinder is ...

  LA = 2πrh

  = 2(22/7)(30 cm)(145 cm) = 27342 6/7 cm²

Then the total surface area of the birdbath is ...

  total area = top+bottom area + lateral area

  total area = 8485 5/7 cm² +27342 6/7 cm² = 35828 4/7 cm²

  = 3 102/175 m²

Answer:

519

Step-by-step explanation:

an = 8n - 1

a65 = 519

final answer is 519

Answer:

A. 82°

B. 144°

C. 75°

D. 150°

E. 241°

F. 80°

Step-by-step explanation:

A circle is 360°

A. 360 - 278 = 82 °

B. 360 - (124 + 92) = 144 °

C. 360 - (255 + 30) = 75 °

D. 360 - (118 + 30 +62) = 150 °

E. 360 - (21 +41 + 57) = 241 °

F. 360 - (30 + 60 + 80 + 110) = 80°

Also, the 80° is congruent so it's the same on both sides.

Answer:

2nd one: 32-4x=12
4th one:25/x+4=9
5th one : x/5+5=6

Step-by-step explanation:

Substitute x and see if you get the same answer

Answer:

B. 32 − 4x =12

D. 25/x + 4=9

E. x/5 + 5 =6

Answer:

246

Step-by-step explanation:

What question makes you do this much but what ever

Answer:

one

Step-by-step explanation:

one equation

tanks Please brianlist

Angles can be measured in degrees and radians

The measure of angle XYZ is 34 degrees

From the question, the measure of arc XY is 68 degrees

The measure of angle XYZ is then calculated as:

Angle XYZ = 0.5 * Arc XY

This gives

Angle XYZ = 0.5 * 68

Evaluate the product

Angle XYZ = 34

Hence, the measure of angle XYZ is 34 degrees

Read more about angles at:

https://brainly.com/question/14362353

Answer:

76

because if you get 51-31 = 20, 31- 16= 15, 16-6= 10 and 6- 1= 5. they add each number by using a multiplication of 5

Answer:

Ok

Step-by-step explanation:

Question: 5²-11 x 2

Answer: 5x5 -11 x 2

25-22

3

Hope this helps you

have a great day :)

Answer:

34cm

Step-by-step explanation:

[tex]Solution,\\\\Area=70cm^{2} \\\\Breadth(b)=7cm\\\\Now,\\\\Length=\frac{Area}{Breadth}\\\\Length=\frac{70cm^{2} }{7cm} \\\\Length=10cm\\\\Again,\\\\Perimeter=2(l+b)\\\\Perimeter=2(10cm+7cm)\\\\Perimeter=34cm[/tex]

The required length and perimeter of the rectangle are 7 cm and 34 cm respectively.

The rectangle is 4 sided geometric shape whose opposites are equal in lengths and all angles are about 90°.

Here,
Let the length of the rectangle be l,

Now,
According to the question,
Area of the rectangle, = l × w
70 = l × 7
l = 70 / 7
l = 10 cm

Now,
Perimeter of the rectangle = 2[l + w]
                                        = 2 [10 + 7]
                                        = 34 cm

Thus, the required length and perimeter of the rectangle is 7 cm and 34 cm respectively.

Learn more about rectangles here:

brainly.com/question/15019502

#SPJ2

Answer:

$7.88

Step-by-step explanation:

SOLUTION:

=) 9 + 6² - 2 × 8

=) 9 + 36 - 16

=) 45 - 16

=) 29

Answer:

0

x

Step-by-step explanation:

Answer:

the fourth one

trapezoid has four(4) sides

Answer:

Step-by-step explanation:

Now, this can be tricky.

But, we can use a calculator.

According to the calculator, the answer was 0.7071.

That means 0.7071 is the answer.

This image is optional. Use it for hints.

Solution:

Given:

Volume of rectangular prism: L x H x B

Use the formula to find the volume.

Finding the volume:

The volume of the rectangular prism is 336 m³.

Answer:

336 meters^3

Step-by-step explanation:

336 meters^3

volume = length x width x height

in this case it would be

6 x 7 x 8 = 336

Answer:

Lisa

Step-by-step explanation:

Find the amount of money Lisa and Tara charge every hour.

Lisa's ratio is 28 : 2 hours

Divide both sides of the ratio by 2

Lisa charges 14 dollars per hour

Tara's ratio is 75:5 hours

Divide both sides of the ratio by 5

Tara charges 15 dollars per hour

Lisa charges 1 dollar less each hour, so Lisa offers a better deal.

Hope this helps :)

Have an awesome day!