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Svet_ta [14]
3 years ago
12

Use substitution to solve each system of equations c-5d=2 2c+d=4

Mathematics
2 answers:
Hatshy [7]3 years ago
8 0
<span>2x-y = -4 OR y = 2x+4
-3x+y=44
-3x + (2x+4)= 44

-x = 40
x = -40 and y = -76 (2*-40 + 4)
c-5d=2 OR c = 5d + 2
2c + d =4
2(5d+2) + d = 4
11d = 0
d = 0 and c = 2 </span>
Anarel [89]3 years ago
4 0
<span>2x-y = -4 OR y = 2x+4
-3x+y=44
-3x + (2x+4)= 44

</span><span>-x = 40
x = -40 and y = -76 (2*-40 + 4)
c-5d=2 OR c = 5d + 2
2c + d =4
2(5d+2) + d = 4
11d = 0

</span><span>d = 0 and c = 2 <span>
</span></span>
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Can someone help me with this?​
KonstantinChe [14]

Answer:

1. AE= 312

2. AC = 161

Step-by-step explanation:

Hey there!

In order to solve the first question, we need to think of possible "C" values

Then after finding the "C" value, we can then find the "A" and "E" values

So:

AC = 24 and CE = 13

What factors do 24 and 13 have in common?

Well, only 1 since 13 is a prime number]

So this means that C has to be 1

Now we know that A is 24 and E is 13

Now we have to multiply them together

24 x 13 is 312

So AE= 312

Now we go on to the second question

We can use the same strategy we used for number one

Instead of finding what C is, we need to find out what E is, since there is E in both of the statements

So:

CE = 7 and AE = 23

What common factors do these two numbers have?

Again, only 1, meaning that E can only be 1

Now we know that C is 7 and A is 23

Since we know this, we can multiply these two numbers together and get our final answer: 161

So AC = 161

4 0
2 years ago
Input-Output<br> 3 27<br> 8 72<br> 9 81<br> 5 45<br> 4 <br> what is the answer for the 4 number?
Mkey [24]

Answer:

Try 36

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
in a sale there is twenty five per cent off all prices a bed cost £33 in the sale how much was it before the sale ?
goldfiish [28.3K]
The original price was 100% and the sale was -25%
100% - 25% = 75%
This means 75% = £33
75% = 3/4
If we divide the sale amount by 3 and them multiply by 4, we will get the original amount.
£33 / 3 = £11
£11 x 4 = £44
5 0
3 years ago
.
deff fn [24]
It should be 95 I believe. Sorry if I’m wrong
8 0
3 years ago
Read 2 more answers
Find the output of the function<br> f(x) = x2 + 8. Find f(-3)
lana66690 [7]

Answer:

17

Step-by-step explanation:

f(x) = x^2 + 8.

f(-3) = (-3) ^2 +8

      = 9+8

      = 17

4 0
3 years ago
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