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Nana76 [90]
3 years ago
8

Write the expression: Add 2 and 4, then subtract 9

Mathematics
2 answers:
alexgriva [62]3 years ago
6 0
Anytime the word "then" is used it means that there will be parenthesis. So the equation will be (2+4)-9
marissa [1.9K]3 years ago
5 0
The expression is
(2+4)-9
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What angle pair is matched with ∠MLA to make alternate interior angles ?
Sedbober [7]

angle GAL would be the same as MLA

4 0
3 years ago
Worth 30 points. Help a homie out
Sauron [17]

Answer:

Multiply the second equation by -3 to get -3x - 9y = -30.

Step-by-step explanation:

When eliminating, you need to find a term with the negative of that term to combine so that they cancel each other out. An example would be 3x in the first equation and (-3x) in another equation so that when added, it becomes: 3x-3x = 0.

In the second equation, you see that there is already an x there and you just need to make it become (-3x). Thus, you multiply the entire second equation by -3 to make -3x. Once you have done that, you can combine the two equations and eliminate 3x from the first equation.

3x + 5y = 30

-3x - 9y = -30

3x + 5y -3x - 9y = 30 + (-30)

0 - 4y = 30 - 30

-4y = 0

<em>You can find y and then x later on from here. </em>

8 0
3 years ago
Can someone plz help me with this question???
Karo-lina-s [1.5K]

Answer:

$109.18

Step-by-step explanation:

128 * 14.7%

128 - Ans

6 0
3 years ago
Read 2 more answers
Evaluate 2xy when x = -1/4 and y = 3
Tcecarenko [31]

Answer:

-1.5

Step-by-step explanation:

2(-1/4)(3)

=-1.5

You replace x with -1/4 and y with 3 inside of parenthesis

6 0
3 years ago
A farmer wants to fence in a rectangular field that encloses 3600 square feet. One side of the field is along a river and does n
andriy [413]

Answer:

C(x) = \$3.50(\frac{x^2+7200}{x})

Step-by-step explanation:

Data provided in the question:

Area of the field = 3600 square feet

Fencing charges = $3.50 per foot

Let the side along the river be 'x' feet and the other side of the 'B'

now,

Area of rectangle = Bx = 3600 square feet

or

B = \frac{3600}{x} feet

and total length to be fenced = x + 2B

therefore,

Total cost of fencing = Fencing charges × total length to be fenced

or

Total cost of fencing = $3.50 × ( x + 2B )

substituting the value of B from (1)

Total cost of fencing, C(x) = \$3.50(x+2\times\frac{3600}{x})

or

C(x) = \$3.50(\frac{x^2+7200}{x})

4 0
3 years ago
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