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3 years ago

PLZ HELP IM BEGGING YOU. Just answer 12 and 13

Mathematics

1 answer:

Vlada [557]3 years ago

7 0

Answer:

12 is

$t = \frac{3(r - v)}{2} \\$

13 is

$v = \frac{5}{9z - 9w}$

Step-by-step explanation:

Please mark as brainliest

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BabaBlast [244]

Answer:

Step-by-step explanation:

80 divided by 2 equals 40 and if you multiply it by 8 its 320 so the constant number is 40. So y=40x mean y=40^x

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3 years ago

Tomatoes that regularly sell for $0.65 per pound are on sale for 20% off the regular price. What is the sale price?

andreyandreev [35.5K]

The sale price is 0.13

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3 years ago

What is the smallest positive number that can be added to 55 so that the resulting number and 45 have 9 as their greatest common

kolbaska11 [484]

Answer:

The smallest positive number is 8

Step-by-step explanation:

let the smallest positive number = x

45 is a multiple of 9 ⇒ 9 x 5 = 45

the next multiple of 9 after 55 is 63

= 9 x 7

= 63

Thus, x + 55 = 63

x = 63 - 55

x = 8

The greatest common factor of 45 and 63 = 9

Therefore, the smallest positive number is 8

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3 years ago

Simplification <br>-4a+b+3c+3a-3b+c

damaskus [11]

Answer:

-a+-2b+4c

Step-by-step explanation:

Combine like terms

-4a+ 3a= -a

b+ -3b= -2b

3c+ c= 4c

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3 years ago

Use the properties of exponents to determine the value of aa for the equation:

Phantasy [73]

Answer: a = -2/3

Step-by-step explanation:

Let's start by multiplying both sides by $x$ to simplify:

$4^{1/3} = x^a \times x$

$4^{1/3} = \underbrace{x \times x \times x \times \cdots \times x}_{a\ \textrm{times}} \times \,x$

$4^{1/3} = \underbrace{x \times x \times x \times \cdots \times x \times x}_{a+1\ \textrm{times}}$

$4^{1/3} = x^{a+1}$

Looking only at the exponents, it seems like $1/3 = a+1$ , so $a = \boxed{-2/3}$ .

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2 years ago