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2 years ago

7/9 x (-5/7) Write as fraction :)

Mathematics

1 answer:

astraxan [27]2 years ago

5 0

Answer:

the answer is 35/54

Step-by-step explanation:

times the numerator and the denominator see if you can simplify it

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Rachel is calculating the interest earned on a deposit of $350 in an account that earns 6% simple interest after 15 years. What

Alla [95]

Answer:

$315

Step-by-step explanation:

You are going to want to use the simple interest formula for this. The one below is modified for solving the interest earned.

$I = Prt$

I = interest amount

P = principal amount

r = interest rate (decimal form)

t = time

Now we can plug in the values into the equation:

$I = 350(.06)(15)$

$I = 315$

This means that Rachel earned $315 worth of interest in the 15 year period.

5 0

3 years ago

Mr. Smith's wife works at an animal hospital. There is a equivalent fraction relationship between the number of dogs and cats in

dimulka [17.4K]

Answer:

There are 10 dogs in the kennels

Step-by-step explanation:

The equivalent fraction relationship between the number of dogs and cats in the kennels is 1/2.

Which means, if $n_d$ the number of dods and $n_c$ is the number of cats, then,

$\frac {n_d}{n_c}=\frac{1}{2}\cdots(i)$

Given that there are 20 cats, so $n_c=20.$

Now, from equation (i) we have,

$\frac {n_d}{20}=\frac{1}{2}$

$\Rightarrow n_d=\frac{1}{2}\times 20$

$\Rightarrow n_d= 10$ .

Hence, there are 10 dogs in the kennels.

7 0

3 years ago

If your heart beats 80 times per minute and you live to be 90 years old, estimate the number of times your heart beats during yo

umka2103 [35]

The heart beat is given in units of beats per minute, therefore before we can do any calculations let us make sure that all units are similar by converting the age in terms of minutes.

We know that there are 365 days per year, therefore:

90 years (365 days / year) = 32,850 days

We know that in a day, there are 24 hours, therefore:

32,850 days (24 hours / day) = 788,400 hours

And in an hour, there are 60 minutes, therefore:

788,400 hours (60 minutes / hour) = 47,304,000 minutes

Now calculating for the total heart beats in a lifetime:

total heartbeats = (80 beats / minute) * 47,304,000 minutes

total heartbeats = 3,784,320,000

Writing this into scientific notation:

3.78 x 10^9 beats

3.8 x 10^9 beats

8 0

3 years ago

3-4z = -5+8z Can someone help?

noname [10]

3-4z=-5+8z

Add 5 to both sides

8-4z=8z

Add 4z to both sides

8=12z

Divide both sides by 12

z=12/8

Simplify

z=3/2

3 0

3 years ago

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Natalia paid $38.95 for three medium-sized pizzas and a salad. Solve an equation to find the cost of one pizza,p, if Natalia pai

Vedmedyk [2.9K]

One Pizza is 8.99 hope this helps

7 0

3 years ago

Read 2 more answers