Please help me, I don’t understand this that well

Answer:

17a - 16

7b

Step-by-step explanation:

Given the following expressions

3a+4(5a - 4)=

Expand

3a + 4(5a)- 4(4)

= 3a + 20a - 16

= 17a - 16

For the expression

5b -2(5a -b) + 10a

Expand

5b - 2(5a)-2(-b) + 10a

5b - 10a  + 2b + 10a

= 5b + 2b -10a + 10a

= 7b + 0

= 7b

b = -5

Step-by-step explanation:

Answer:

x = 9.5

Step-by-step explanation:

Since you are given the adjacent side and need to find the hypotenuse then you need to use cos = adj/hyp so cos (47) = 6.5/x

So x = 6.5/.682, since cos 47 = .6819983601

x = 9.5

Answer:

x<7.5

Step-by-step explanation:

Answer:

[tex]x < \frac{15}{2} [/tex]

Step-by-step explanation:

1) Just Divide both sides by 2.

[tex]x < \frac{15}{2} [/tex]

Therefor, the answer is x < 15/2.

Answer:

a) 60.4

b)2.4×10^6

c)1.47×10^-3

Step-by-step explanation:

here is the answer

Answer:

$250

Step-by-step explanation:

Answer: A (1.156x10(6)

Step-by-step explanation: IM DOING THE INTERIM TOOOOOO

Difference in the population of two countries will be 1.156 × 10⁶.

 Given in the question,

Estimated population of two different countries in year 2030,

Difference in population of both the countries = 1300,000,000 - 144,000,000 = 1156,000,000

Scientific notation of the population difference → 1.156 × 10⁶

    Therefore, difference in the population of two different countries will be 1.156 × 10⁶.

Learn more,

https://brainly.com/question/1740231

Answer:

9

Step-by-step explanation:

divide 24 by 8 and multiply what you got by 3

24/8=3

3*3=9

Answer:

9

Step-by-step explanation:

[tex] \frac{3}{8} \times \frac{24}{1} [/tex]

[tex] \frac{3 \times 24}{8 \times 1} [/tex]

[tex] \frac{72}{8} [/tex]

[tex]72 \div 8[/tex]

[tex] = 9[/tex]

Answer:

[tex]r=\frac{41}{14}[/tex]

Step-by-step explanation:

[tex]\frac{3r-2}{5} =\frac{5+2r}{8} \\\\8(3r-2)=5(5+2r)\\24r-16=25+10r\\24r-10r=25+16\\14r=41\\\\r=\frac{41}{14}[/tex]

Answer:

Step-by-step explanation:

Use trigonometry

Let the height of the cloud be x, then we have:

The height of the cloud layer is 367.6 m

Answer:

The area of a circle with a diameter of 3 meters:

The area of a square with a side length of 3 meters:

The difference:

The square has greater area by 1.935 m²

Answer:

the difference in area between a circle with a diameter of 3 meters and a square with a side length of 3 meters=d²-π/4d²

=3²-3.14/4×3²=1.935m²

Answer:

9 : 3

Step-by-step explanation:

To get from 21 to 3 we divided 21 by 7, therefore we have to do the same to the other side and so we get...

63 / 7 = 9

Therefore 63 : 21 = 9 : 3

Answer:

5.-90+0=-90

Step-by-step explanation:

Answer:

-8

Step-by-step explanation:

so g(x) = 3x+4

to find g( -4) , it simply mean that to replace the x in the function g by the value given which is -4

so when u replaced it give you

g(-4) = 3(-4) +4

= -12 +4

= -8

Answer:

3

Step-by-step explanation:

because 3 includes everyone so it's not biased

Answer:

the answer is 3!!!!!!!!!!

Answer:

19.33 ft

Step-by-step explanation:

This analogy has to do with Pythagoras theorem.

We're given our angle of elevation to be 46°, and told that the height of the building to be 20 ft. Using Pythagoras theorem, we know that the given height is opposite to the angle of elevation, and thus, the required distance is adjacent to it.

Sin 46° = opp / hyp

Sin 46° = 20 / hyp

hyp = 20 / sin 46

hyp = 20 / 0.719

hyp = 27.82 ft

We've gotten the length of the ladder, our hypotenuse, to be 27.82. It's tied length we'd then use top find the needed length.

Cos 46° = adj / hyp

Cos 46° = adj / 27.82

adj = 27.82 * Cos 46

adj = 27.82 * 0.695

adj = 19.33 ft

Therefore, the required length is approximately equal to 19.33 ft

Answer:

THEY messed you upon this one and I don't see if you have to write or not!

More details please and thank you!

Step-by-step explanation:

Answer:

Volume = 1 πr2h3= 1×π×122×73= 336π= 1055.5751316062 inches3

its 72

I think its right?

Answer:

La respuesta es 4

Step-by-step explanation:

La Ramon para esto es porque Como 3x4 son igual a 12 ebtonces por eso la respuesta es 4

Answer:

The midpoint of BC is -7

Step-by-step explanation:

Answer:

Los pasos para calcular la raíz cuadrada entera y su residuo o resta se dará en la explicación;

Step-by-step explanation:

-60: Para saber exactamente cuál es su raíz cuadrada entera debemos buscar entre que cuadrados perfectos se encuentra comprendida este valor;

Tenemos que 7x7=49  y 8x8 = 64 (60 está comprendido entre  7 y 8) ,pero como la raíz de 49 se aproxima más a 60 entonces la raíz de 60 es 7 y su residuo o resta será el valor que falta para llegar a 60; así que tenemos:

[tex]\sqrt{60}[/tex]=7  ; residuo:  60-49 =11

-86:    9x9 =81 ;81 se aproxima más a 86 ,entonces la raíz cuadrada entera de 86 es 9 y su residuo es 5:

[tex]\sqrt{86}[/tex]=9;  residuo : 86-81= 5

-96:   9x9=81 ;  81 por tanteo se aproxima más a 91,entonces la raíz cuadrada  entera de 96 es 9 y su residuo es 15.

[tex]\sqrt{96[/tex]= 9x9 =81 ; residuo :  96-81= 15.

Answer:

B

Step-by-step explanation:

4x + 8 is another way of saying

4(x) + 4(2)

Answer:

19/57=15/45=11/33

1/3=1/3=1/3

1:3

C

You just gotta read the graph. Chocalate is 10, Hard Candy is 13 and Chewy is 9

Answer:

it is actually b beacuse hard candy on the graph is 12.5 not 13!

Step-by-step explanation:

Answer/Step-by-step explanation:

How many total fish is Dr. Howser planning on buying?

BOTH tanks hold 120 gallons

Tank A :

3 every 10 --> 120/10 ---> 12

So multiply 3 and 12 ----> 36

36 fishes in tank A

Tank B:

6 every 40 -----> 120/40 ----> 3

So multiply 6 by 3 ----> 18

18 fishes are held in tank B

Add them together:

18 + 36 ----> 54

ANSWER : Dr. Howser is planing on purchesing 54  fish all together.

What will be the ratio of the number of small fish he buys to the number of large fish that he buys

Small --->  36 fish

Large ---> 18 fish  

Small : Large  ----> 36:18

ANSWER: 36:18

if you need it siplified it would be 2:1

Answer:

C) 4^2

Step-by-step explanation:

4^7 * 4^-5 = 4^(7-5) = 4^2.

If it is helpful, plz give me Brainliest.

Answer:[tex]4^{2}[/tex]

Step-by-step explanation:

Let's take our equation

[tex]4^{7}*4^{-5}\\[/tex]

Now subtract the exponents

[tex]7-5=2\\4^{2}[/tex]