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sashaice [31]
3 years ago
15

For the system of equations: -4s + 2t = -5 8s - 6t=7 What is the value of s?

Mathematics
1 answer:
dedylja [7]3 years ago
5 0

Answer:

s = 2

Step-by-step explanation:

I'll be using the substitution method.

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Which equation can be used to represent this information?
bogdanovich [222]

Answer:

r=s+5

Step-by-step explanation:

So, letsgo over what we know:

The regular price is r

The sale price is s

Now lets compare the difference between r and s:

10r = 5s

20r = 15s

30r = 25s

What is the difference between the r and s value in each situration?

Well, from what I can see, r is always 5 more than s.

This can be writen as:

r = s+5\

So this is our equation, for if you plug in any number for s, you will get an accurate r value.

For instance, if you say s is 25:

r=25+5

=

r=30

This looks just like the 30r=25s in the table above.

So:

r=s+5

Hope this helps! :)

7 0
3 years ago
2) Bobby has 3 apples and 5 oranges. Mary has 2 apples and
RideAnS [48]

Answer:

3 apples and 6 oranges.

Step-by-step explanation:

5-1=4

4+2=6

0+3=3

6 apples and 3 oranges

3 0
4 years ago
The volume of a fish tank is 30 ft.³ if the Density is 0.3 how many fishes are in the tank
marta [7]
The answer is 9 fish.

The density (d) is the number of units(n) per volume (V):
d = n/V We know: d = 0.3 fish/ft³. V = 30 ft³ n = ? d = n/V n = d * V n = 0.3 fish/ft³ * 30 ft³ n = 9 fish



5 0
3 years ago
PLS HELP I WILL GIVE BRAINLEST
yan [13]

Answer:

he earns 69 dollars

Step-by-step explanation:

1st grade question now give brainliest 5 stars and heart

6 0
3 years ago
Read 2 more answers
16. Interest earned:
photoshop1234 [79]

\bf ~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\\ P=\textit{original amount deposited}\dotfill & \$1250\\ r=rate\to 3\%\to \frac{3}{100}\dotfill &0.03\\ t=years\dotfill &4 \end{cases} \\\\\\ I=(1250)(0.03)(4)\implies I=150

3 0
3 years ago
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