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lys-0071 [83]
3 years ago
13

Plsss someone help i need help with this

Mathematics
2 answers:
serious [3.7K]3 years ago
6 0
For one it’s 32/5
2. 32
Wewaii [24]3 years ago
5 0

Answer:

  1. -3/5 + 7 = 32/5 or 6.4
  2. 51 + -19= 32
  3. -321 + -85= -406

Step-by-step explanation:

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Meghan is checking her tax bill for the last year<br> the tax rates were as followed
antoniya [11.8K]
I don’t understand this is there a longer question?
8 0
3 years ago
How would the sum of cubes formula be used to factor x3y3 + 343? Explain the process. Do not write the factorization.
Svetllana [295]

Answer:

Given : Expression -x^3y^3+343

To find : How would the sum of cubes formula be used to factor given expression? Explain the process. Do not write the factorization.

Solution :

The formula of sum of cubes is,

a^3+b^3=\left(a+b\right)\left(a^2-ab+b^2\right)

First we convert the given expression in a^3+b^3

x^3y^3+343

Apply exponent rule : a^mb^m=(ab)^m

x^3y^3=(xy)^3

Rewrite 343=7^3

Therefore, x^3y^3+343  could be written as =\left(xy\right)^3+7^3

On comparison with the formula,

a=xy , b=7

\left(xy\right)^3+7^3=(xy+7)(xy^2-xy(7)+7^2)

\left(xy\right)^3+7^3=(xy+7)((xy)^2-7xy+49)            

5 0
3 years ago
Read 2 more answers
Зу+9=14
Anon25 [30]

Answer:

Constant(s) = 14,9

Coefficient = 3

Variable = y

6 0
3 years ago
Given that x and y vary inversely and that y is 8 when x is 2, what is the constant of variation, k?
Shtirlitz [24]

Answer:

16

Step-by-step explanation:

the equation is x = k / y

therefore k = x* y

k = 2*8

k= 16

4 0
3 years ago
What is the volume of this box?<br> 4 in long<br> 12in high<br> 3in wide
Natali5045456 [20]

Answer:

<h2>144 in²</h2>

Step-by-step explanation:

Multiply the length, width and height to find the volume of the box

6 0
3 years ago
Read 2 more answers
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