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wlad13 [49]
3 years ago
7

Robert and Danielle go to Macys in the mall. Robert buys 4 marroon polos and 3 khaki pants. Danielle buys 6 marroon polos and 4

khaki pants. Robert spends $85. Danielle spends $120. Define two variables.
(example: x = cost of hat)
From the previous problem, set up an equation for Robert showing how much he spent.?

From the initial problem, set up an equation for Danielle showing how much she spent.?

Write both equations from questions 2 and 3. THAT IS YOUR SYSTEM OF EQUATIONS!!!?​
Mathematics
1 answer:
Fofino [41]3 years ago
3 0
C.
I took the test. Good luck
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VLD [36.1K]

Answer:


Step-by-step explanation:

I believe it's C.33 because if 4×33=132 the rest are smaller and one of the is equal,

So in my opinion It's 33

5 0
3 years ago
Which equation represents this statement? One-third of a number is 21.
Musya8 [376]
This states that a number divided by 3 is 21. the equation is: n/3 = 21
5 0
3 years ago
Please help!!!Its timed !!!!! Ill give out most brainly and extra points !!!
seropon [69]

Answer:

<h2>D)x=4,y=7</h2>

Step-by-step explanation:

<h3>to understand this</h3><h3>you need to know about:</h3>
  • equation
  • PEMDAS
<h3>let's solve:</h3>

according to the question

\begin{cases}x + 29 = 7x + 5 \\ 8y - 35 =3y  \end{cases}

\begin{cases}x -7x= 5-29 \\ 8y - 3y=35 \end{cases}

\begin{cases}-6x= -24\\ 5y=35 \end{cases}

\begin{cases}\frac{-6x}{-6}=\frac{-24}{-6} \\ \frac{5y}{5}=\frac{35}{5} \end{cases}

\therefore \begin{cases}  x=4\\ y=7 \end{cases}

6 0
3 years ago
Need help really bad, brainliest to who answers,
Paraphin [41]

Answer:

I know (A, (E, and (F

Note:

There might be more.

<em>-kiniwih426</em>

7 0
3 years ago
Can someone please help me solve these two problems and explain them to me? About the one with proportions though... I've always
NeTakaya

Answers:

A) -\frac{11}{4}

C) m_{1}=\frac{Fr^{2}}{G m_{2}}

Step-by-step explanation:

<u>Part 1:</u>

We have the followig equation:

\frac{x-1}{3}-\frac{x+4}{5}=\frac{4x-1}{8}

Calculating the least common multiple (l.c.m) in the denominator in the left side of the equation, being l.c.m=15:

\frac{5(x-1)-3(x+4)}{15}=\frac{4x-1}{8}

Solving for the left part of the equation:

\frac{2x-17}{15}=\frac{4x-1}{8}

Operating with cross product:

8(2x-17)=15(4x-1)

Applying the distributive property:

16x-136=60x-15

Isolating x:

x=-\frac{121}{44}

Dividing numerator and denominator by 11:

x=-\frac{11}{4} Hence, the correct option is A

<u>Part 2:</u>

We have the followig equation:

F=\frac{G m_{1} m_{2}}{r^{2}}

Operating with cross product:

Fr^{2}=G m_{1} m_{2}

Isolating m_{1}:

m_{1}=\frac{Fr^{2}}{G m_{2}} Hence, the correct option is C

5 0
3 years ago
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