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ycow [4]
2 years ago
5

Help me please I don’t get it

Mathematics
2 answers:
VMariaS [17]2 years ago
6 0
Do you need help with all of them?
qwelly [4]2 years ago
6 0
Let’s take 282 x 19 for example.

For this one, you’re going to take the 9 and multiply it by 282.

2 x 9 = 18

This, so far gives you **8, and you take the one away to add to the next product.

8 x 9 = 72 + 1 = 73

Now, we have *38, and we take the 7 to add to the next product.

2 x 9 = 18 + 7 = 25

This gives us 2,538.

Now we need to do the same for the 1 in 19. But before we do that, we must add a put a zero as the last number to this product.

2,538
+***0

2 x 1 = 2

2,538
+**20

8 x 1 = 8

2,538
+*820

2 x 1 = 2

2,538
+2,820

Now, add these two numbers together and you have your sum:

5,358



Hope this helped a bit!





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Solve the following inequality for x.<br> PLEASE HELP
mina [271]
I think it’s C. Because
X ≤ 9and 9 is higher than -7 (sorry if I’m wrong)




8 0
3 years ago
A concession stand at an athletic event is trying to determine how much to sell cola and iced tea for in order to maximize reven
Cerrena [4.2K]

Solution :

Demand for cola : 100 – 34x + 5y

Demand for cola : 50 + 3x – 16y

Therefore, total revenue :

x(100 – 34x + 5y) + y(50 + 3x – 16y)

R(x,y)  = $100x-34x^2+5xy+50y+3xy-16y^2$

$R(x,y) = 100x-34x^2+8xy+50y-16y^2$

In order to maximize the revenue, set

$R_x=0, \ \ \ R_y=0$

$R_x=\frac{dR }{dx} = 100-68x+8y$

$R_x=0$

$68x-8y=100$  .............(i)

$R_y=\frac{dR }{dx} = 50-32x+8y$

$R_y=0$

$8x-32y=-50$  .............(ii)

Solving (i) and (ii),

4 x (i)    ⇒       272x - 32y = 400

     (ii)   ⇒   (-<u>)     8x - 32y = -50   </u>

                        264x        = 450

∴   $x=\frac{450}{264}=\frac{75}{44}$

     $y=\frac{175}{88}$

So, x ≈  $ 1.70      and    y = $ 1.99

    R(1.70, 1.99) = $ 134.94

Thus, 1.70 dollars per cola

          1.99 dollars per iced ted to maximize the revenue.

Maximum revenue = $ 134.94

4 0
3 years ago
Please help me work plz
xxTIMURxx [149]

Answer:

Yes

Step-by-step explanation:

<u>7^2 + 4x</u>:

Fill in for x :

7^2+4(2)

solve:

49+8

=57

<u>4x+(7 x 7)</u>:

Fill in for x:

4(2) + (7 x 7)

solve:

8+49

=57

Thus, the correct answer is yes

3 0
4 years ago
An cute triangle has two sides measuring 8cm &amp; 10 cm
IrinaK [193]
Option 3 is the correct one
4 0
4 years ago
3q+3.97=7.57 please help im stuck on ixl
disa [49]

Answer:

1.2

Step-by-step explanation:

3q+3.97=7.57

3q=7.57-3.97

3q=3.6

q=3.6/3

q=1.2

6 0
3 years ago
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