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faust18 [17]
3 years ago
13

7 + (2 + 6) 2 ÷ 4 ⋅ (1/2)^4 A: 23 B: 18 C: 9 D: 8

Mathematics
1 answer:
Drupady [299]3 years ago
6 0

Answer:

D: 8

Step-by-step explanation:

7 + (2 + 6) ^2 ÷ 4 ⋅ (1/2)^4

According to PEMDAS

We to parentheses first

7 + (8)^ 2 ÷ 4 ⋅ (1/2)^4

Then we do exponents

7 + 64 ÷ 4 ⋅ (1/16)

The multiply and divide from left to right

7+64 ÷ 4 ⋅ (1/16)

7+16 ⋅ (1/16)

Then add and subtract from left to right

7+1

8

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NEED RN, WORTH 20! <br> What is the value of x?
max2010maxim [7]

Answer:

x = 5.625

Step-by-step explanation:

<u>Step 1:  Make an expression</u>

<u />\frac{3}{4} = \frac{x}{7.5}

<u>Step 2:  Cross Multiply</u>

<u />\frac{3}{4} = \frac{x}{7.5}

4 * x = 7.5 * 3

4x = 22.5

<u>Step 3:  Divide both sides by 4</u>

<u />4x / 4 = 22.5 / 4

x = 5.625

Answer:  x = 5.625

5 0
3 years ago
I need help!! This is getting a little harder than I expected
MAXImum [283]

Length of the side = 9 cm

Diagonal = 9\sqrt{2} cm

Solution:

Area of the square = 81 square centimeters

In square all sides are equal.

Area of the square = side × side

Side × side = 81

Side² = 9²    (∵81 = 9²)

Taking square root on both sides, we get

Side = 9 cm

Length of the side = 9 cm

To find the length of the diagonal:

In square all the angles are right angle.

Diagonal splits the square into two right angle triangle.

Using Pythagoras theorem,

<em>In right triangle, square of the hypotenuse is equal to the sum of the square of the other two sides.</em>

Here, diagonal is the hypotenuse.

\text{Diagonal}^2=9^2+9^2

\text{Diagonal}^2=81+81

\text{Diagonal}^2=2\times 81

Taking square root on both side,

Diagonal = 9\sqrt{2} cm

6 0
3 years ago
PLEASE HELP ASAP
vovikov84 [41]

Answer:

Third option

Step-by-step explanation:

x^{2}-10x+25=0 is the correct answer. 100% sure

7 0
3 years ago
Read 2 more answers
Is this a direct variation problem
Llana [10]
Yes and for a. You can just put y=x [y=1x is bascually the same but just the 1 isnt needed]
6 0
4 years ago
2(10) + 2(x – 4) please simplify the expression
kolezko [41]

Answer:

3

Step-by-step explanation:

4 0
3 years ago
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