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snow_lady [41]
3 years ago
9

What is the value of the expression below when x =10 4x+5÷8x+5

Mathematics
2 answers:
Bond [772]3 years ago
5 0
I got 51.25 or 51 1/4
djyliett [7]3 years ago
5 0

Answer:

51.25 (or 51 1/4)

Step-by-step explanation:

4x + 5 ÷ 8x + 5

Substitute 10 for x into the expression.

4(10) + 5 ÷ 8(10) + 5

Start by multiplying 4 and 10.

40 + 5 ÷ 8 * 10 + 5

Now divide 5 and 8.

40 + 0.625 * 10 + 5

Multiply 0.625 and 10.

40 + 6.25 + 5

Add them all together.

51.25

If you want your answer in fraction form it would be 51 1/4.

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Ví dụ 1.5. Một người đi mua hàng 3 lần. Xác suất lần đầu mua được hàng tốt là 0,7.
vodka [1.7K]

Answer:

a) 0.50575,

b) 0.042

Step-by-step explanation:

Example 1.5. A person goes shopping 3 times. The probability of buying a good product for the first time is 0.7.

If the first time you can buy good products, the next time you can buy good products is 0.85;  (I interpret this as, if you buy a good product, then the next time you buy a good product is 0.85).

And if the last time I bought a bad product, the next time I bought a good one is  0.6. Calculate the probability that:

a) All three times the person bought good goods.

P(Good on 1st shopping event AND Good on 2nd shopping event AND Good on 3rd shopping event) =

P(Good on 1st shopping event) *P(Good on 2nd shopping event | Good on 1st shopping event) * P(Good on 3rd shopping event | 1st and 2nd shopping events yield Good) =

(0.7)(0.85)(0.85) =

0.50575      

b) Only the second time that person buys a bad product.

P(Good on 1st shopping event AND Bad on 2nd shopping event AND Good on 3rd shopping event) =

P(Good on 1st shopping event) *P(Bad on 2nd shopping event | Good on 1st shopping event) * P(Good on 3rd shopping event | 1st is Good and 2nd is Bad shopping events) =

(0.7)(1-0.85)(1-0.6) =

(0.7)(0.15)(0.4) =

0.042

5 0
3 years ago
The sum of two non-zero numbers a and b equals the sum of their reciprocals. If a+b≠0, what is the product of the two numbers?
Vadim26 [7]

Answer:

ab = 1

Step-by-step explanation:

A Reciprocal of a number is a number which when multiplied by the original number yields the multiplicative number, 1.

So the reciprocal of x would be x⁻¹ or ¹⁄ₓ

The information we are given states that the sum of the two non-zero numbers a and b equals the sum of their reciprocals.

So we can write this into an equation and solve,

(See image)

Once we solve, we get the equation (ab-1)(a+b) = 0

We are given info that a+b≠0

So for the above equation to be true, ab-1 has to equal 0

For <em>this</em> to be true, the product ab must equal 1

7 0
3 years ago
What is e+3/8=2 answer
kvasek [131]

Answer:

1\frac{5}{8}

or

1.6

6 0
3 years ago
What are the coordinates of point F
densk [106]

Answer:

(4,-2.5)

Step-by-step explanation:

first one is x cordination...it is under the 4

second one is Y cordination..its between -2 and -3

If you understand my answer.mark me as Brainliest...If not...Mark me as BrAiNlEss...☺️

3 0
3 years ago
Hey I really need this done asap I will mark brainliest and rate 5 stars 50 Points to who ever can get me the answers please and
zavuch27 [327]
                      MUSTARD MAN
1) 16y+0=0  Identity Property Of Addition
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5) r*1=r   Identity property of Addition
6) (5y+2)+14x=5y+(2+14x)   Associate property of Addition 
7) (m*n)*p=m*(n*p)  Associate Property of Multiplication
Please use the information you have to make sure these are RIGHT!!!! 
-GENERAL OUT
4 0
3 years ago
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