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4 years ago

What is the value of the expression below

Mathematics

2 answers:

Anarel [89]4 years ago

8 0

Answer:

Step-by-step explanation:

Putting values of z and w

7z + 8w

7(8) + 8(8)

56 + 64

120

gayaneshka [121]4 years ago

5 0

Step-by-step explanation:

Putting values of z and w

7z + 8w

7(8) + 8(8)

56 + 64

120

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In Exercise, evaluate each expression.<br> 643/4

Goshia [24]

Answer:

$\\ 64^{\frac{3}{4}} = 16\sqrt{2}$

Step-by-step explanation:

We need here to remember that:

$\\{(x^{a})}^{b} = x^{a * b}$

$\\{x^{a} * x^{b} = x^{a + b}$

Then,

$\\ 64^{\frac{3}{4}} = {(8^{2})}^{(\frac{3}{4})} = {{(2^{3})}^{2}}^\frac{3}{4}$

$\\ 64^{\frac{3}{4}} = {{2^{3}}^2}^\frac{3}{4} = 2^\frac{3*2*3}{4}$

$\\ 64^{\frac{3}{4}} = 2^\frac{2*3*3}{4} = 2^\frac{3*3}{2} = 2^\frac{9}{2}$

$\\ 64^{\frac{3}{4}} = 2^{\frac{9}{2}}$

Since $\\ \frac{9}{2} = \frac{4}{2} + \frac{4}{2} + \frac{1}{2}$

$\\ 64^{\frac{3}{4}} = 2^{\frac{9}{2}} = {2^{(\frac{4}{2} + \frac{4}{2} + \frac{1}{2})}$

$\\ 64^{\frac{3}{4}} = 2^{\frac{4}{2}} * 2^{\frac{4}{2}} * {2}^{\frac{1}{2}$

$\\ 64^{\frac{3}{4}} = 2^{2} * 2^{2} * {2}^{\frac{1}{2}$

$\\ 64^{\frac{3}{4}} = 4 * 4 * \sqrt{2} = 16 \sqrt{2}$

5 0

3 years ago

The senior classes at High School A and High School B planned separate

gladu [14]

Answer: Van: 10, Bus: 46

Step-by-step explanation:

Let the number of students in each van be represented by v.

Let the number of students in each bus be represented by b.

The question given can be formed into an equation as:

3v + 13b = 628 ...... i

9v + 2b = 182 ......... ii

Multply equation i by 9

Multiply equation ii by 3

27v + 117b = 5652 ........ iii

27v + 6b = 546 ....... iv

Subtract iv from iii

111b = 5106

b = 5106/111

b = 46

Bus = 46

Recall that 9v + 2b = 182

9v + 2(46) = 182

9v + 92 = 182

9v = 182 - 92

9v = 90

v = 90/9

v = 10

Van = 10

5 0

3 years ago

Ayuda por favor :”( .....

frosja888 [35]

Letter A 4 Liters jdnsiws

5 0

3 years ago

Find the slope and reduce p=(-2,-1) q=(6,5)

Delicious77 [7]

Answer:

3/4

Step-by-step explanation:

Given two points , we find the slope using the formula

m = (y2-y1)/(x2-x1)

= ( 5 - -1)/ ( 6 - -2)

= (5+1)/( 6+2)

= 6/8

= 3/4

4 0

3 years ago

Read 2 more answers

The mean of 19 numbers is 17. An extra number is included and the mean increases to 23. What is the extra number?

bearhunter [10]

Answer:

Extra number = (23×20) - (19×17)

= 137

8 0

3 years ago