All categories

3 years ago

Which of these expressions is equal to 6+(2+3)x5

Mathematics

2 answers:

Genrish500 [490]3 years ago

7 0

55 is correct 2+3=5, so 6+5 is 11*5=55

Bumek [7]3 years ago

3 0

<span>6+(2+3)x5 is equal to 31.
I'm not sure if x5 is *5 or x5</span>

You might be interested in

When three pipes fill a pool, they can finish in 12 hours. Two of the pipes can finish in 18 hours if they are working together.

ladessa [460]

3 pipes take 12 hours
⇒ In 1 hour, the 3 pipes can fill 1/12 of the pool

2 of the pipes take 18 hours
⇒ in 1 hour, the 2 pipes can fill 1/18 of the pool

In 1 hour, the third pipe alone can fill :

$\dfrac{1}{12} - \dfrac{1}{18} = \dfrac{3}{36} - \dfrac{2}{36} = \dfrac{1}{36} \text { of the pool}$

Time needed :

$1 \div \dfrac{1}{36} = 1 \times 36 = 36 \text { hours}$

----------------------------------------------------------------------------------------
Answer: It will take 36 hours for the third pipe to fill the pool.
----------------------------------------------------------------------------------------

5 0

3 years ago

Read 2 more answers

Select from the drop down menu correctly complete each statement. The opposite of - 3 5/8 is on the ( same or opposite which one

EastWind [94]

I believe opposite on both!

7 0

3 years ago

Read 2 more answers

Please help! I will give 12 points?

muminat

I think the answer is 25/4
if not im sorry

4 0

4 years ago

A chemist measures 8 grams of a substance that

Greeley [361]

Answer:

$y(t) =8 (b)^t$ Where b is the decay rate for this case. Using the condition given we have:

$4 = 8 b^6$

$\frac{1}{2}= b^6$

$b = (\frac{1}{2})^{1/6}$

And our model would be given by:

$y(t) = 8 (\frac{1}{2})^{t/6}$

And replacing the value of t=15 we got:

$y(15) = 8 (\frac{1}{2})^{15/6} = 1.414 grams$

Step-by-step explanation:

For this case since the half life is 6 hours we have the following condition:

$y(6) = \frac{1}{2}A_o$

Where $A_o=4$ is the initial amount

Our model for this case is given by this expression:

$y(t) =8 (b)^t$ Where b is the decay rate for this case. Using the condition given we have:

$4 = 8 b^6$

And solving for b we got:

$\frac{1}{2}= b^6$

And solving for b we got:

$b = (\frac{1}{2})^{1/6}$

And our model would be given by:

$y(t) = 8 (\frac{1}{2})^{t/6}$

And replacing the value of t=15 we got:

$y(15) = 8 (\frac{1}{2})^{15/6} = 1.414 grams$

5 0

3 years ago

Chau bought an item for $29. Before that, he had $307.89. How much money does chau have now?

NISA [10]

278.89 dollars left because if you take how much money he had (307.89) then subtract that by how much he paid for that iten (29) then youll get 278.89 dollars left.

4 0

4 years ago

Read 2 more answers