Does anyone know the answer to all 4 of these?

Answer:

-21, 12

Step-by-step explanation:

We first have to solve each of the list of numbers:

-45 -21 = -66

-21 - 16 = -37

-16+12=-4

33+40=73

-45-16=-61

-45+33 = -12

-45 + 12 = -33

-21 + 12 = -9

Hence, we can conclude that -21 and 12 add up to -9

~Learn with Lenvy~

The surface area of the actual ramp is 16.8 ft²

An area is the amount of space occupied by the two dimensional shape or object.

The height of the actual ramp = 1.2 feet and the height of the model = 6 cm

Scale factor = 1.2 feet / 6 cm = 0.2 ft/cm

Actual base = 16 cm * 0.2 ft/cm = 3.2 ft

9 cm = 9 cm * 0.2 ft/cm = 1.8 ft, 10 cm = 10 cm * 0.2 ft/cm = 2 ft,

Surface area of actual ramp = 2(0.5 * 3.2 ft * 1.2 ft) + 2(2 ft * 1.8 ft) + (1.8 ft * 3.2 ft) = 16.8 ft²

The surface area of the actual ramp is 16.8 ft²

Find out more on area at: https://brainly.com/question/25292087

Answer:

358 feet²

Step-by-step explanation:

Answer:

358

Step-by-step explanation:

A= 12 x 5

= 60

x 2 = 120

A= 5 x7

= 35

x 2 = 70

A = 12 x 7

= 84

x2 =168

(I multiply by 2 because 2 sides are equall)

Add:

120 + 70 + 168 = 358

Hope this helps!

Answer:

24

Step-by-step explanation:

2x - 8 = 40

2x = 40 + 8

2x = 48

2x/2 = 48/2

x = 24

Answer:

the answer here is x=2. it makes it 2/3 equivalent to 4/6 then 4/6-1/6 equals 3/6 which is equivalent to .5 or 1/2. i hope this Helps

Step-by-step explanation:

0.5=1/3-|(x-3)/6+x|

Answer:

as I = Pr

Step-by-step explanation:

we have to find P so

P=I/r

P = 2.25/3

P = 0.75

[tex]\\ \rm\rightarrowtail x(x-4)=x^2-12x+32[/tex]

[tex]\\ \rm\rightarrowtail x^2-4x=x^2-12x+32[/tex]

[tex]\\ \rm\rightarrowtail 8x=32[/tex]

[tex]\\ \rm\rightarrowtail x=4ft[/tex]

Answer:

x=2

Step-by-step explanation:

1. Combine like terms

26x-7x = 19x

2. isolate 19

38/19 = 19x/19

x=2

Answer:

Step-by-step explanation: so

l*w*h
7.5ft*4ft*8ft

that would be 240ft^3

Then 2.5^3

would be 15.625^3

So then u would do

240ft^3/15.625ft^3 = 15.36 boxes of paper

So u could fit abt 15 boxes of paper in the back of his truck

Answer:

6.28

Step-by-step explanation:

c=d(pi)

c=2(3.14)

Answer:

[tex]3500[/tex]

Step-by-step explanation:

Given the following question:

[tex]3.5\times10^3[/tex]

To convert a scientific notation into standard form we first need to keep in mind that the exponent in indeed a positive. Knowing this we know that the decimal point is going to move to the right.

Since the exponent is three, we know that the decimal point is going to move to the right THREE times.

[tex]3.5\times10^3[/tex]
[tex]3.5\times10^3=3.5.0.0.[/tex]
[tex]3.5.0.0.=3500[/tex]
[tex]=3500[/tex]

Your answer in standard form is "3500."

Hope this helps.

Answer:

2

Step-by-step explanation:

2d = 2 × d

-10 = 2 × (-5)

The common factor is 2.

Pls, choose me as brainliest!

Answer:

2

Step-by-step explanation:

2d = 2 × d

-10 = 2 × (-5)

The common factor is 2.

Answer:

2/10

Step-by-step explanation:

1 whole is equal to 10/10

5/10+3/10=8/10

10/10-8/10=2/10

hope this helps! :)

Answer:

the full lenght of fabric is 10/10 so if she used 3/10 and 5/10 that's in total 8/10.. she used 2/10 for the third skirt

Answer:

  a) 120°

  b) 16√3 ≈ 27.7 cm²

Step-by-step explanation:

Each exterior angle of a regular polygon measures 360° divided by the number of sides. For a hexagon, the exterior angle is 360°/6 = 60°. That means the adjacent interior angle is 180°-60° = 120°.

Angle ABC measures 120°.

__

The area of triangle ABC can be found using the formula ...

  A = 1/2ab·sin(C) . . . . area of triangle with sides a, b, and angle C between them

  A = 1/2(8 cm)(8 cm)sin(120°) = (32 cm²)(√3/2) = 16√3 cm²

The area of the triangle is 16√3 cm² ≈ 27.7 cm².

Answer:

∠ABC = 120°

ΔABC = 16√3 cm²

Step-by-step explanation:

Part (a)

Sum of interior angles of a regular polygon = (n - 2) × 180°
(where n is the number of sides)

⇒ Sum of interior angles of a regular hexagon = (6 - 2) × 180° = 720°

All the interior angles in a regular polygon are equal.

⇒ Interior angle = sum of interior angles ÷ number of sides

⇒ ∠ABC = 720° ÷ 6

⇒ ∠ABC = 120°

------------------------------------------------------------------------

Part (b)

Use the sine rule for area of a triangle:  

[tex]\dfrac12ab \sin(C)[/tex]

(where a and b are the sides and C is the included angle)

Given:

Substituting values into the formula:

[tex]\implies \dfrac12\cdot 8 \cdot 8 \sin(120)=16\sqrt{3} \ \sf cm^2[/tex]

Answer:

It’s option A, Choi’s option A

Step-by-step explanation:

The destructive interference formula for diffraction grating problems is [tex]d\ sin(\theta) = (n+\dfrac{1}{2} )\lambda[/tex].

When the maxima of two waves are 180 degrees out of phase, destructive interference occurs: a positive displacement of one wave is cancelled exactly by a negative displacement of the other wave. The resultant wave has zero amplitude.

In a diffraction grating, the formula for brighter patches arising from constructive interference and darker patches arising from destructive interference is:

[tex]d\ sin(\theta) = n\lambda[/tex]

Here, d is the grating spacing, θ is the angle of light, n represents the fringe order, and w denotes the wavelength.

The value of N can only be integers values.

Now, Because destructive interference occurs between the fringes, the destructive interference formula is

[tex]d\ sin(\theta) = (n+\dfrac{1}{2} )\lambda[/tex]

where n is again an integer.

Hence, the destructive interference formula for diffraction grating problems is [tex]d\ sin(\theta) = (n+\dfrac{1}{2} )\lambda[/tex].

Learn more about Destructive Interference:

https://brainly.com/question/16098226

Answer:

[tex] \tan( \beta ) [/tex]

here we go hope it helps

Answer:$16

Step-by-step explanation: let $x be the amount of money daniel spent.

tracey spent $38 less than 3 times what daniel spent. blah blah blah

Answer:

12 in.

Step-by-step explanation:

2x + x + 3/2x + 1/2x = 40 in. = 5x

x = 8 in.

3(8)/2 = 12

Answer:

B

Step-by-step explanation:

4(x+3) is 4x+12 and -2(-x-5) is 2x+10 so it makes 4x + 12 + 2x + 10

Answer:

the first option

Step-by-step explanation:

when exponents are multiplied together, they add their values together.

example: y^2 x y^3 = y^5

written out: y x y x y x y x y = y^5

Answer:A

Step-by-step explanation:

Answer:

x = 54

Step-by-step explanation:

Seven minus a number split into 9 equal parts in one

7 - (1/9)x = 1

7 - 1 = (1/9)x

(1/9)x = 6

x = (9)(6)

x = 54

Answer:

(0'3)

Step-by-step explanation:

the line going across is the x axis the one going up and down is the y-axis the first number goes on the x-axis which is zero so it stays in the middle and three the second number goes on the up and down line which is the y axis

Answer:

(0'3)

Step-by-step explanation:

Answer:

D.

[tex]\frac{2d^{2}-2d-38 }{(d+5)(d+3)}[/tex]

Step-by-step explanation:

Remove any grouping symbol such as brackets and parentheses by multiplying factors.

Use the exponent rule to remove grouping if the terms are containing exponents.

Combine the like terms by addition or subtraction.

Combine the constants.

does anyone know the answer if you do please post it here

Answer:

Step-by-step explanation:

I know gthis but its To calculate the area of a triangle, multiply the base by the height and divide by two. If you know how to calculate the area of a rectangle, you should be able to calculate the area of a triangle with ease because a triangle is half of a rectangle or square. As a result, because it's half of a rectangle, you should apply the identical approach of calculating the area of a rectangle and then dividing it by two. I hope that's clear!

Answer:

624 cubic inches

Step-by-step explanation:

12 x 8 x 6.5 = 624