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Y_Kistochka [10]
2 years ago
12

A television and DVD player cost a total of 1132. The cost of the television is three times the cost of the DVD player. What is

the cost of each item?
Mathematics
1 answer:
lubasha [3.4K]2 years ago
7 0
Let x rep cost of dvd in $
so the cost of tv is 3x
and x + 3x = 1132
4x=1132
x=1132/4
x= 283 and 3x=3(283)=849
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Franco read 3/8 of a chapter of his history book in 1/5 of an hour. At this rate, how many chapters of his history book can he r
Irina18 [472]

He can read 1\frac{7}{8} chapters of his history book in 1 hour.

<em><u>Explanation</u></em>

Franco read 3/8 of a chapter of his history book in 1/5 of an hour.

Suppose, he can read x chapters of his book in 1 hour at this rate.

So, the equation according to the <u>ratio of 'the chapter to the time'</u> will be....

\frac{x}{1}= \frac{\frac{3}{8}}{\frac{1}{5}}\\ \\ \frac{x}{1}=\frac{3}{8}*\frac{5}{1}\\ \\ \frac{x}{1}=\frac{15}{8} \\ \\ x= \frac{15}{8}= 1\frac{7}{8}

So, he can read 1\frac{7}{8} chapters of his history book in 1 hour.

6 0
3 years ago
25. Which of the following is equivalent to: 7 2 x 7-4
MissTica

Answer:

It's D or 1/7^2

\frac{1}{7^{2} }

Step-by-step explanation:

They both equal 1/49

3 0
3 years ago
What is BE ?<br> Please explain it in full dont just give me an answer
posledela
There are two methods to solve this problem. One of them is the typical method and the other one is the short-cut. I will explain the shortcut

Short-cut: 
This method is quick and easy, and works with ALL triangles, which is why I suggest you use this. You make proportions. Since the triangles are similar, we can use CPCTC. Thereafter,
\frac{AD}{CE}= \frac{DB}{EB}

Now, you just need to identify the terms, substitute, and solve for the unknown, which would be k. 

\frac{12}{3} = \frac{k+5}{k-7} \\ 12(k-7)=3(k+5) \\ 12k-84=3k+15 \\ 9k=84+15 \\ 9k=99 \\ k=11[/tex]

So we found k, but it is asking for BE. Therefore, plug in the value of k, which is 11, into the expression for BE, which is k-7.

BE=K-7
k=11
BE=11-7
BE=4

Your answer is 4.





5 0
3 years ago
Helpppp!BASIC MATHhhh
MAXImum [283]

How much we need for start-up supplies . . . . . $25

AFTER start-up supplies we want to have . . . $70

Total amount we need to get started . . . (25 + 70) = $95

Number of people contributing . . . (me + 4) = 5

<em>Amount each person needs to kick in</em> . . . (95/5) = <em>$19</em>

As your preliminary Accountant, please reserve me one dozen (13) bagels from the first batch you produce !

4 0
3 years ago
Find x.<br> 8<br> 2radius3<br> 8<br> 8radius3<br> (hurry plz, will give brainliest) -15pts-
-BARSIC- [3]

Answer:

Answere is X= 8

Step-by-step explanation:

Use sine law

Sin(angle) = Opposite/ Hypotenuse

Sin (30) = 4 /X

X = 4 / sin (30)

X = 8

5 0
3 years ago
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