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choli [55]
2 years ago
8

X=4y,2x+y=18 solve by substitution show all work

Mathematics
1 answer:
Mkey [24]2 years ago
7 0
Here is the math, did it on paper, sorry it’s blue. just add parenthesis around the x in the second equation and add what x equals. then solve as PEMDAS.

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Omar has a gift card for $40.00 at a gift shop. Omar wants to buy a hat for himself for $13.50. For his friends, he would like t
stealth61 [152]

Answer:

A. 3.25x + 13.50 ≤ 40

The number of bracelets is x. It's a variable.

The 13.50 is a constant.

The total needs to be less than or equal to 40 because that's all the money he has.

6 0
2 years ago
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Three taps can fill a tank in 1.5 hours how many tab can feel it in 45 minutes ​
kap26 [50]

Answer:

30 Tabs?

Step-by-step explanation:

Not so sure on this, I just divided 45/1.5.

5 0
2 years ago
Function (A or B) has the greater initial value because the initial value for function A is _ and the initial value for Function
Volgvan

Answer:

Function B has the greater initial value because the initial value for function A is 4 and the initial value for Function B is 5

Step-by-step explanation:

  • <em>The initial value of a function is the output value of the function when the input value is 0</em>

Initial value of A is y=4 at x=0,

and

initial value of B is y=0*6+5= 5 at x=0

Function B has the greater initial value because the initial value for function A is 4 and the initial value for Function B is 5

5 0
3 years ago
Which expression gives the determinant of the matrix
BartSMP [9]

If the matrix is of 2 by 2 then we can find the determinant of the matrix.

\begin{bmatrix}a & b\\ c & d\end{bmatrix}

Then (ad - bc ) gives you the determinant of the matrix.

For example,

\begin{bmatrix} 2 & 4\\  1 & -2 \end{bmatrix}

= (2)(-2) - (1)(4)

= - 4 - 4

\begin{bmatrix} 2 & 4\\  1 & -2 \end{bmatrix} = -8



3 0
3 years ago
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I need to know number 5 just what it says thank you
Stels [109]

Answer:

C

Step-by-step explanation:

Okay! Time to use the Pythagoras theorem.

a^2 + b^2 = c^2

4^2 + 7^2 = x^2

16 + 49 = c^2

65 = c^2

Let's take the square root of both sides to get

c ~ 8.06

C

:)

5 0
3 years ago
Read 2 more answers
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