3 years ago

40 POINTS NEED HELP FAST(sqrt is a radical)

Mathematics

1 answer:

Ira Lisetskai [31]3 years ago

4 0

1)5sqrt17,2sqrt157,8sqrt2

2)sqrt7

3)-3(3sqrt3+2sqrt5)

4)18sqrt6,12sqrt3-9sqrt15

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X + y = 152,<br><br> 8.5x + 12y = 1,656<br><br> How many hats were sold?

Elodia [21]

Answer:

x = 48 and y = 104

Step-by-step explanation:

Given equations are:

$x+y = 152\\8.5x+12y=1656$

From equation 1:

$x = 152-y$

Putting the value of y in equation 2

$8.5(152-y)+12y = 1656\\1292-8.5y+12y = 1656\\3.5y+1292 = 1656\\3.5y = 1656-1292\\3.5y = 364\\\frac{3.5y}{3.5} = \frac{364}{3.5}\\y = 104$

Now we have to put the value of y in one of the equation to find the value of x

Putting y = 104 in the first equation

$x+y = 152\\x+ 104 = 152\\x = 152-104\\x = 48$

Hence,

The solution of the system of equations is x = 48 and y = 104

The value of variable which was assumed for number of hats, is the total number of hats.

6 0

2 years ago

800 is 10 times as much as

Anon25 [30]

80 because 800= 10 x 8

3 0

2 years ago

maria had lunch at her favorite resturant. the cost of her meal was $32. after leaving a 15% tip, what was the total cost of her

Zigmanuir [339]

Answer:

$36.80

Step-by-step explanation:

15% of 32 = 0.15x32 = $4.80

32+4.80 because it was a tip being added to the bill

=36.80

8 0

2 years ago

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A domain of [-4, -2, 1

UNO [17]

what???????

???????????????????????

5 0

2 years ago

Heres just the last one and I’m good

Scorpion4ik [409]

Answer:

2340

Step-by-step explanation:

15 x 13 ÷ 2 x 24 = 2340

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2 years ago

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