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mylen [45]
3 years ago
9

Bài 2: Tìm x biết

Mathematics
1 answer:
Svetllana [295]3 years ago
3 0

Answer:

76

Step-by-step explanation:

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16. At the mall, a pair of jeans cost $44 and a pair of earring cost $12. You spend a total of $80
sergij07 [2.7K]

There are 3 pairs of earrings that you bought in addition to the jeans. Forming an equation with the given values helps to find the required value.

<h3>How to write an equation for the given information?</h3>

It is given that,

A pair of jeans cost = $44

A pair of earrings cost = $12

you spent a total of $80 before taxes.

So, the equation for the given data is,

$80 = $44 + $12x

Where x is the number of pairs of earrings.

<h3>Calculation:</h3>

Simplifying the obtained equation:

$80 = $44 + $12x

⇒ 12x = 80 - 44

⇒ 12x = 36

⇒ x = 36/12

∴ x = 3

Thus, you can buy three pairs of earrings at the mall in addition to the jeans.

Learn more about an equation here:

brainly.com/question/25678139

#SPJ9

8 0
2 years ago
How do I solve this step by step?
Zinaida [17]

Answer:

45

Step-by-step explanation:

plug in 3 where the xs are

2(3)(6(3)-5(3))+(3)^2(5(3)-4(3)=45

2(3)=6

6(3)=18

-5(3)=15

(3)^2=9

5(3)=15

-4(3)=-12

8 0
3 years ago
If yard is 3 feet long how many inches are in a yard
Alla [95]
There are 12 inches in a foot and if a yard is 3 feet then do:
3 x 12 and you get 36in
So there are 36 inches in a yard
7 0
3 years ago
How can △WXY be mapped to △MNQ?
Alexeev081 [22]
The answer is : 2)line segment wy
8 0
3 years ago
6. If F(x) = -6(2x2 + 5x) - 9, what is the value of F(-4)?
Soloha48 [4]

Answer:

-81

Step-by-step explanation:

-6(2x² + 5x) - 9

substitute -4 for 'x'

-6[2(-4)² + 5(-4)] - 9

-6[2(16) + (-20) - 9]

-6(32 - 20) - 9

-6(12) - 9

-72 - 9 = -81

5 0
3 years ago
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