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prisoha [69]
3 years ago
13

Evaluate the variable expression xyz for the given values of x, y, and z. x = 4/5 , y = −15, z = 7/8

Mathematics
2 answers:
Georgia [21]3 years ago
7 0

Answer:

xyz = - 21 / 2

Step-by-step explanation:

xyz = (4/5)(-15)(7/8) = (4×-15×7)/(5×1×8)

= (4×-3×5×7)/(5×1×4×2)......    because:    15 = 5×3 and 8 = 4×2

xyz = - 21 / 2

Sav [38]3 years ago
6 0

Answer:

The answer is -10.5

Step-by-step explanation:

You can just simply multiply the numbers above.

xyz=(4/5)*(-15)*(7/8)=-10.5

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yuradex [85]

Answer: 8

Step-by-step explanation:

we know the area of a circle is

A=π r²  

50.24= 3.14* r²

50.24/3.14=r^2

16=r^2

r=sqrt 16=4

diameter is 2r=2*4=8

4 0
3 years ago
A dartboard has 20 equally divided wedges and you are awarded the number of points in the section of your dark lands in if you a
Leto [7]

Answer:

Pr =0.75

Step-by-step explanation:

Given

See attachment for wedge

Required

P(x > 5)

The sample space of the wedge is:

S = \{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20\}

n(S) = 20

The outcomes greater than 5 are:

x > 5 = \{6,7,8,9,10,11,12,13,14,15,16,17,18,19,20\}

n(x>5) =15

So, the probability is:

Pr =\frac{(n(x>5)}{n(S)}

This gives:

Pr =\frac{15}{20}

Pr =0.75

6 0
3 years ago
Tyler saved 1/3 as much as kara. tyler saved $55. write an equation to find how much kara saved?
siniylev [52]

X - 1/3 = 55

55x3= 165

4 0
3 years ago
What is the total cost for a $100 dinner plus 20% tip plus 8% sales tax
hoa [83]
$129.6

you do 100 times .08 and get 8 so 100 + 8 = 108
then you do 108 times .20 and get 21.6 so 108 + 21.6 = 129.6
6 0
2 years ago
Erica went shopping for new clothes for school. She bought a pair of jeans for $35.99 and several shirts for $11.33 each. If x
GuDViN [60]

Answer:

Simplify

x

=

35.99

dollar

11.33

dollar

.

x

=

3.1765225

Step-by-step explanation:

7 0
1 year ago
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