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GuDViN [60]
4 years ago
15

To simplify (5 + 2)^2 + 7 ÷ 7

Mathematics
2 answers:
Sedbober [7]4 years ago
7 0
Parentheses (brackets/braces) are done first according to the order of operations.
Answer A
notka56 [123]4 years ago
6 0

Answer:

A.

Step-by-step explanation:

Parenthesis

Exponents

Division

Multiplication

Addition

Subtraction

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the ratio of the length to width in a full-size cello is approximately 8 to 3. What is the width of a full-size cello that is 45
Brut [27]

Answer:

w = 16.875 inches

Step-by-step explanation:

Given that the ratio of the length to width in a full-size cello is approximately 8 to 3.

This will be a constant for all cellos

Using the above we can find out length if we know width and vice versa.

Here we know the length = 45 inches

Since \frac{l}{w} =\frac{8}{3} =\frac{45}{w}

BY cross multiplication we find that

8w = 3(45)

Or w = 16.875 inches

Verify:

Let us check our answer by comparing with proportion

l/w = 45/16.875 = 8/3

Hence our answer is right

6 0
3 years ago
Read 2 more answers
Change the following mixed numbers to improper fractions<br> a) 4 3/8<br> b) 2 1/3<br> c) 5 2/5
Blababa [14]

Answer:

a) 35/8

b) 7/3

c) 27/5

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The perimeter of rectangle QRST is the same as the perimeter of rectangle LMNP which is 17x. The length of rectangle QRST is 2x+
ELEN [110]
Given;

Preimeter of QRST = Perimeter of LMNP

Perimeter of LMNP = 17x
So,
Perimeter of QRST LMNP = 17x

Now,
Length of QRST = 2x + 9
Width = ?

We know,
Perimeter =  2 (l + w)
17 x = 2 (2 x + 9 + w)
17 x = 4 x + 18 + 2 w
17 x -4 x - 18 = 2 w
13 x - 18 = 2 w
w = (13 x - 18) / 2

w =  \frac{13}{2} x-9    <-- our answer
  
7 0
3 years ago
Help please!!!!!!!!!!!!!
fiasKO [112]

Answer:

<QPR = 98.5 degrees

Step-by-step explanation:

a line = 180 degrees

7x + 4 + 9x - 40 = 180

16x - 36 = 180

16x = 216

x = 13.5

<QPR = 7x + 4 = 7(13.5) + 4 = 98.5

5 0
3 years ago
What’s the simplified form of the expression (T^4/10y^4)^-4
monitta
\bf ~~~~~~~~~~~~\textit{negative exponents}&#10;\\\\&#10;a^{-n} \implies \cfrac{1}{a^n}&#10;\qquad \qquad&#10;\cfrac{1}{a^n}\implies a^{-n}&#10;\qquad \qquad &#10;a^n\implies \cfrac{1}{a^{-n}}&#10;\\\\&#10;-------------------------------\\\\&#10;\left( \cfrac{t^4}{10y^4} \right)^{-4}\implies \left( \cfrac{10y^4}{t^4} \right)^{4}\impliedby \textit{then we distribute the exponent}&#10;\\\\\\&#10;\left( \cfrac{10^4y^{4\cdot 4}}{t^{4\cdot 4}} \right)\implies \cfrac{10000y^{16}}{t^{16}}
6 0
4 years ago
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