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Allisa [31]
3 years ago
10

40•(420:x-37)=200 помогите решить уравнение

Mathematics
1 answer:
miv72 [106K]3 years ago
4 0
40•(420:x-37)=200 <span>означает 40(\frac{420}{x}-37)=200
</span>
<span>разделите обе стороны на 40
</span><span>
\frac{420}{x}-37=5
</span>
<span>добавить 37 с обеих сторон

\frac{420}{x}=42
</span>
<span>умножить обе стороны на х
420=42x

</span><span>разделите обе стороны на 42
10=x
x=10
</span>
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How do u solve for x
Radda [10]
Sorry I can’t see the picture very well
7 0
3 years ago
Read 2 more answers
An airline finds that if it prices a cross-country ticket at $200, it will sell 300 tickets per day. It estimates that each $20
olya-2409 [2.1K]

We can write that as a function:

f(n)=(200 -20n) * (300 + 50n)\\f(n)=60000+10000n-6000n-1000n^2\\f(n)=-1000n^2+4000n+60000\\

where n is the number of price reductions. We can see that it is a quadratic function which has the biggest value at P = (p, q). It means that p is the number of reductions which results in the biggest profit.

p=\frac{-b}{2a}=\frac{-4000}{-2000}=2

It means that it's the best to make 2 price reductions for the company. The tickets should be sold for $200 - 2 * $20 = $160. It results in 2 * 50 more tickets sold which is 300 + 100 = 400.

Answer:

Ticket price: $160

Number of tickets: 400

6 0
3 years ago
$100 are shared between Adam and Hamza in the ratio 1:3.
Sholpan [36]

Answer:

$25 for Adam and $75 for Hamza

Step-by-step explanation:

$100 will be divided to 3 + 1 = 4 parts

the dollars Adam received

= $100 × 1/4

= $25

the dollars Hamza received

= $100 × 3/4

= $75

-----------------------------------------------------------

the dollars Hamza give to Adam

= $75 × 25%

= $75 × 25/100

= $18.75

the dollars Adam have

= $25 + $18.75

= $43.75

the dollars Hamza have

= $75 - $18.75

= $56.25

the ratio

= 43.75:56.25

= 7:9

3 0
3 years ago
8/11 x (5/9 - 1/6) ÷ 1 5/9​
Oksana_A [137]

Answer:

28/165

Step-by-step explanation:

You always use the order of operations, and the order of operations says to solve parentheses first, so you would solve 5/9 - 1/6, and get 7/18.

You would do exponents next, if there were any, but there is not, so you move on to the next operation(s).

The next operations are multiplication and division. From left to right, multiplication is first, so you solve 8/11 x 7/18 and get 28/99. Then, there is a division problem to solve. The problem is 28/99 ÷ 15/9. If you solve that correctly, you will get the answer 28/165.

The next step would be to simplify 28/165, but it cannot be simplified, so you are left with the answer 28/165.

4 0
3 years ago
PLEASE ANSWER ASAP BUT WAIT UNTIL I POST THE QUESTION
TiliK225 [7]
It's B since the question is tricky it can be answer B which will lead to the main answer there is 1 more answer but it's not very accurate.
Hope This Helps ;)
5 0
3 years ago
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