3 years ago

6z+43z=78 what does z equal?

Mathematics

1 answer:

Ksju [112]3 years ago

6 0

6z+43z=78
Collect like terms
49z=78
Z=78/49
Z=1.59
Hope this helps!

You might be interested in

Kenny had 5/7 more trading cards than lee. After Kenny collected 50% more trading cards, he had 220 more trading cards than lee.

svp [43]

Answer:

Step-by-step explanation:

Let X is the number of cards Kenny has

Let Y is the number of cards Lee has

1. Kenny had 5/7 more trading cards than lee, it means

X = Y + 5/7X (1)

2. After Kenny collected 50% more trading cards, he had 220 more trading cards than lee, it means:

X + 50%X = Y + 220 (2)

So, we solve the 2 equations to find out X and Y

$\left \{ {{X=Y + 5/7X} \atop {1.5X=Y +220}} \right.$

<=> X = $\frac{3080}{17}$ and Y = $\frac{880}{17}$

<=> X ≈181 and Y ≈ 52

6 0

3 years ago

Ok guys my friend is telling me that i am doing this problem wrong 4^4+1/2=256.5 and he is tell me that it is 16.5 am i right or

Alexxx [7]

Simplify 4^4 to 256

256 + 1/2 = 256.5

Simplify 256 + 1/2 to 513/2

513/2 = 256.5

Since both sides equal, there are infinitely many solutions.

3 0

3 years ago

Read 2 more answers

Which of the following expressions can you multiply using the FOIL Method? Check all that apply. Please Hurry. 50 points!!

Helen [10]

Answer: the answers are

(x+a)(x-b)

(3x-2)(x+4)

Step-by-step explanation: i took the test and got it right hope this helps!

8 0

3 years ago

HELP FAST PLEASE<br> Find u*v, if u=13j and v=i+3j

Flauer [41]

$\bf \begin{cases}
u=13j\implies 0i+13j\implies \ \textless \ 0,13\ \textgreater \ \\
v=i+3j\implies 1i+3j\implies \ \textless \ 1,3\ \textgreater \ 
\end{cases}
\\\\\\
\ \textless \ 0,13\ \textgreater \ \cdot \ \textless \ 1,3\ \textgreater \ \implies (0\cdot 1)+(13\cdot 3)\implies 39$

6 0

3 years ago

What is 2.1 as a fraction?

german

2 1/10 because the 1 in 2.1 is in the tenth place

7 0

3 years ago