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kari74 [83]
3 years ago
15

Which property justifies the following statement? if x=4 and y=3x-11, then 3*4-11

Mathematics
1 answer:
ser-zykov [4K]3 years ago
6 0
Substitution property
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Most dietitians recommend that adults consume 20 to 30 percent of their daily caloric intake in protein. Based on this recommend
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Answer:

360-540 calories

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3 years ago
Jerry irks at the skate board shop he is paid at the end of the week. He earns 245.00$ a week plus a 15% commission on each boar
blagie [28]

Answer:

$462.7

Step-by-step explanation:

15% commission on $54

= $8.1

he sell 27 boards so

8.1 × 27=$218.7

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2 years ago
Match each of the trigonometric expressions below with the equivalent non-trigonometric function from the following list. Enter
andreev551 [17]

Answer:

Step-by-step explanation:

In each case, draw the right triangle which produces the inverse trig value. That is, label the two sides as needed, and calculate the third side.

It should be clear that

tan(sin^{-1} x/4) = x/\sqrt{16-x^{2} }

sin(tan^{-1} x/4) = x/\sqrt{16+x^{2} }

sin(2α) = 2 sinα cosα

So,

1/2 sin(2sin^{-1} x/4) = (1/2)(x/4) * x/\sqrt{16-x^2} = x^{2} /(8\sqrt{16-x^2})

See what you can do with the others.

6 0
3 years ago
The radius of a circle is 8 kilometers . What is the diameter?
dimaraw [331]

Answer:

16 km

Step-by-step explanation:

the radius is half of the diameter

8 0
3 years ago
Read 2 more answers
A sporting goods store is having a 15% off sale on all items. Which functions can be used to find the sale price of an item that
asambeis [7]
The answers are: 
<span>ƒ(x) = x - .15x
</span><span>Sale = Original - .15(Original)
</span><span>y = .85x

Let sale price be f(x) and x be the original price. Discount was 15% = 0.15
f(x) = x - 0.15x

If f(x) is sale and x is the original, then:
</span><span>Sale = Original - .15(Original)

Let sale price be y and original price x:
y = x - 0.15x
y = 1 * x - 0.15 * x
y = (1 - 0.15) * x
y = 0.85x</span>
3 0
3 years ago
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