help me asap mathematics 7th grade

Answer:

x=-20

Step-by-step explanation: since 9 is being added, subtract it from both sides so x=-20 that was easy :>

Answer:

n=90

Step-by-step explanation:

80% as a decimal is 0.80

0.80n = 72

n = 72/0.80

n = 90

Not my work

Answer:

1.No- that just means that the numbers on that side are smaller

Step-by-step explanation:

Answer:

NM =LK=20cm(side of parallelogram are equal)

LN=KM=24cm(diagonal of parallelogram are equal)

QM=1/2×24=12cm(diagonal bisect each other)

KN=√(24²-20²)=13.26cm(by Pythagoras theorem)

Answer:

Step-by-step explanation:

Ratio 4:5 means:

width: W = 4x

length: L = 5x

Area of rectangle:  A = W×L

Therefore:

              500 = 4x×5x

               500 = 20x²

               50 = 2x²

                x² = 25

                x = 5

W = 4×5 = 20 cm

L = 5×5 = 25 cm

Answer:

45

Step-by-step explanation:

20:15 the ratio can be turned to a fraction

20/15

simplify

4/3

so now add the numerator and the denominator and get 7

then do 105/7=15

and then you do

4x15=60 (Destroyers)

3x15=45 (Battleships)

45 is your answer

Answer: Alright So, A bag is filled with green and blue marbles. There are 48 marbles in the bag. If there are 38 more green marbles than blue marbles, find the number of green marbles and the number of blue marbles in the bag.

------

Equations:

g + b = 48 marbles

g = b + 38

------

Substitute for "g" and solve for "b"::

b+38 + b = 48

2b = 10

b = 5 (# of blue marbles)

g = b+38 = 43 (# of green marbles)

Step-by-step explanation:

Answer:

Step-by-step explanation:

It's C.

Answer:

haha i feel bad i dont know lol

Answer:

Se requiere una fuerza de 854.473 newtons sobre el émbolo pequeño.

Step-by-step explanation:

Por el Principio de Pascal se conoce que el esfuerzo experimentado por el elefante es igual a la presión ejercida por el plato pequeño. Es decir:

[tex]\frac{F_{1}}{A_{1}} = \frac{F_{2}}{A_{2}}[/tex] (1)

Donde:

[tex]F_{1}[/tex] - Fuerza experimentada por el elefante, medida en newtons.

[tex]F_{2}[/tex] - Fuerza aplicada sobre el plato pequeño, medida en newtons.

[tex]A_{1}[/tex] - Área del plato grande, medida en metros cuadrados.

[tex]A_{2}[/tex] - Área del plato pequeño, medida en metros cuadrados.

La fuerza aplicada sobre el plato pequeño es:

[tex]F_{2} = \left(\frac{A_{2}}{A_{1}} \right)\cdot F_{1}[/tex]

La fuerza experimentada por el elefante es su propio peso. Por otra parte, el área del plato es directamente proporcional al cuadrado de su diámetro. Es decir:

[tex]F_{2} = \left(\frac{D_{2}}{D_{1}} \right)^{2}\cdot m\cdot g[/tex] (2)

Donde:

[tex]D_{1}[/tex] - Diámetro del plato grande, medido en centímetros.

[tex]D_{2}[/tex] - Diámetro del plato pequeño, medido en centímetros.

[tex]m[/tex] - Masa del elefante, medida en kilogramos.

[tex]g[/tex] - Aceleración gravitacional, medida en metros por segundo cuadrado.

Si sabemos que [tex]D_{1} = 0.75\,m[/tex], [tex]D_{2} = 0.13\,m[/tex], [tex]m = 2900\,kg[/tex] y [tex]g = 9.807\,\frac{m}{s^{2}}[/tex], entonces la fuerza a aplicar al émbolo pequeño es:

[tex]F_{2} = \left(\frac{0.13\,m}{0.75\,m} \right)^{2}\cdot (2900\,kg)\cdot \left(9.807\,\frac{m}{s^{2}} \right)[/tex]

[tex]F_{2} = 854.473\,N[/tex]

Se requiere una fuerza de 854.473 newtons sobre el émbolo pequeño.

Answer:

a translation 5 units to the left

Step-by-step explanation:

                                                 Answer

                                       Part 1: B. 5 units left

                                     Part 2: C. 7 units down

                                             Hope it helps!

                                     Have an amazing day!!

                                                     ^ω^

-- FTS

Answer:

The first one

Step-by-step explanation:

Negative b plus and minus the square root of b squared minus 4ac divided by 2a

Answer:

13.52 fluid ounces should be the right answer! :)

Step-by-step explanation:

Andre drank from the bottle 13.52 fluid ounces if he drank 80% of bottle.

Percentage is defined as the parts of a number in a whole of 100. This is denoted by the symbol '%'.

In other words, percentage can be defined as the ratio expressed as a fraction of 100.

Any number can be expressed as a percentage of another number by dividing the number with the whole of other number and then multiplying with 100.

Given that, fluid contained in a sports bottle = 16.9 fluid ounces.

Andre drank 80% of the fluid contained in the bottle.

80% of the bottle = 80% × 16.9

                             = (80 / 100) × 16.9

                             = 0.8 × 16.9

                             = 13.52

So this is the total fluid ounces Andre drink.

Hence Andre drank 13.52 fluid ounces from the bottle.

To learn more about Percentage, click on the link given below :

https://brainly.com/question/29306119

#SPJ2

Answer:

Hi, person.

Step-by-step explanation:

Step-by-step explanation:

first criss cross

then minus by 1 over 4

OR

find lcm of 3 6 4 and after you get it write the number out side let # be the lcm and let me show you #(2,5)&#(_1) and solve it

Answer:

the area is 50.27

Step-by-step explanation:

Use the formula and you can get the answer A=πr2

Answer: 50.27

Step-by-step explanation:

Answer:

1: male + female [tex]\leq[/tex] 30

2: 140 + 25x [tex]\geq[/tex] 550

Step-by-step explanation:

Answer:

9 is justin is 65 marcella is 63 and aimee is 61

11 is 20%+2

hope that helped

Answer:

      D    on edg

Step-by-step explanation:

Answer:

The value is $10.21, and it shows the change received

Step-by-step explanation:

I know for a fact it is 10.21 but since there is no graph and from what you told I believe this is the answer. Brainliest please ???

Answer:

mid point = (5.5,3.5) distance = 5.830951895

Step-by-step explanation:

4+7=11, 11/2 = 5.5

6+1=7, 7/2 = 3.5

root (7-4)^2 + (1-6)^2 = 5.830951895

Answer:

Mean

Step-by-step explanation:

Answer:

11/2

Step-by-step explanation:

2,3,3,4,5,6,6,6,7,9

5+6/2

11/2

hope it's helpful ❤❤❤❤❤❤

THANK YOU.

Answer:

C)

Step-by-step explanation:

First use distributive property: a(b +c) =a*b +a*c

-3x + 5(x +2) = -3x + 5*x +5*2

                   = -3x + 5x + 10          {Combine like terms}

                  = 2x + 10

(-3x) and 5x are like terms

Answer:

1.08

Step-by-step explanation:

This is because it grows upon itself so it starts with a multiplier of 1, but it is growing with .08 (8 percent) on itself so you add these two numbers together to get 1.08

Answer:

24/36

Step-by-step explanation:

Have a nice day..........

Answer:

c

Step-by-step explanation:

proportionality of 4 on all

Answer:

1953125 I calculated it... Thanks for the points

Step-by-step explanation:

5^9

=1953125 that's the answer trust me