MATHEMATICS MIDDLE SCHOOL

Solve for " x " --- 20/x = 4/9 ? explain. (:

Answers

Answer 1

Answer: X=45 as it is a direct proportion. 20/5=4 so (45)/5=9

Answer 2

Answer:

Answer:

X=45 as it is a direct proportion. 20/5=4 so (45)/5=9

Step-by-step explanation:

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Solve this system of equations: 2x+y=11 y=x-1

Please explain how you got it and try to explain your steps!

Answers

Use the substitution method to solve.

2x+y=11
y=x-1

We have the value for y, so put it in the first equation.

2x + x - 1 = 11
2x + x = 3x
3x - 1 = 11
+ 1 +1

3x = 12
x = 4

Now solve for y

y=x-1
y = 4 - 1
y = 3

Answer: y = 3 and x = 4

What is trinomial? Please answer

Answers

A trinomial is an expression with three components being multiplied. For example, abc, or 7xy,

A trinomial is an expression being multiplied Example:
a*b*c

HELP ME ASAP IT IS DUE TODAY!!!!!!!! WHOEVER ANSWER THIS WILL BE REWARDED

Answers

Answer:

Large Pizza

Step-by-step explanation:

Rewarded with what? :P

Anyway,

The area of a circle is pi*r^2. Additionally, the radius is half the diameter.

The first pizza(s) have diameter 12, which means they have radius 6. The area of one is 6*6*pi=36pi, and since there are two we multiply by 2 to get 72pi.

The second pizza has diameter 18, so radius 9. The area of it is 9*9*pi=81pi.

Clearly 72pi is less than 81pi, so the Large Pizza is biggest.

Hope that helped,

-sirswagger21

(oh yeah and btw give me a million bucks for the reward ty :v)

alis dog weighs 8 times as much as her cat. together, the two pets weigh 54 pynds. how much does Alis dog weigh?

Answers

The weight of the Alis dog is $\fbox{\bf48}$ pounds.

Further explanation:

Consider the weight of the Alis dog as $x$ poundsand weight of the cat as $y$ pounds.

Since, the weight of the Alis dog is 8 times the weight of the cat. It can be written as follows:

$x=8y$ ......(1)

Now, the total weight of the cat and dog are given as 54 pounds. It can be written as follows:

$x+y=54$ ......(2)

From equation (1), substitute $8y$ for $x$ in equation (2).

$\begin{aligned}8y+y&=54\n9y&=54\ny&=(54)/(9)\ny&=6\end{aligned}$

Thus, the weight of the cat is 6 pounds.

Substitute 6 for $y$ in equation (1) to obtain the weight of Alis dog as follows:

$\begin{aligned}x&=8(6)\n&=48\end{aligned}$

Thus, the weight of the Alis dog is 48 pounds.

Learn more:

1. Which function has an inverse that is also a function? {(–1, –2), (0, 4), (1, 3), (5, 14), (7, 4)} {(–1, 2), (0, 4), (1, 5), (5, 4), (7, 2)} {(–1, 3), (0, 4), (1, 14), (5, 6), (7, 2)} {(–1, 4), (0, 4), (1, 2), (5, 3), (7, 1)}

brainly.com/question/1632445

2. A given line has the equation 10x + 2y = −2. what is the equation, in slope-intercept form, of the line that is parallel to the given line and passes through the point (0, 12)? y = ( )x + 12

brainly.com/question/1473992

3. What are the domain and range of the function f(x) = 3x + 5?

brainly.com/question/3412497

Answer Details :

Grade: Middle School .

Subject: Mathematics .

Chapter: linear equation.

Keywords:

lines, equation, pound, Alis dog, cat, weight, linear equation, zeros, x,y,x=8y,x+y=54, function, substitution, pets, direct substitution, elimination, graph, middle term factorization, fraction.

PLEASE ANSWER! DOING ANOTHER QUICK TEST! REAL QUICK! MUST BE CORRECT! POINTS WILL BE GIVEN!

Answers

-6 * (-20)

-6
-20
-------
120 (Two negatives = a positive!)

Which values from the specified set make up the solution set of the inequality?5w-10>20; {5,6,7,8}

select each correct answer

A.) 5
B.) 6
C.) 7
D.) 8

PLEASE HELP