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cupoosta [38]
3 years ago
15

Please help D+E= 2 D-E=4 ​

Mathematics
2 answers:
Ghella [55]3 years ago
4 0

Answer:

e=-1, d=3

Step-by-step explanation:

d-e=4

d=4+e

plug this in to top equation

4+e+e=2

2e=-2

e=-1

plug in to bottom equation

d+1=4

d=3

NARA [144]3 years ago
3 0

Answer:

A

Step-by-step explanation:

That is the only pair that works

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A computer repairs service charges $50 for diagnosis and $per hour for repairs. Write a linear function that models this situati
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Answer:

62

Step-by-step explanation:

6 0
3 years ago
I REALLY NEED HELP!
Snowcat [4.5K]

Answer:

B

Step-by-step explanation:

The compound interest formula is A = P (1+r/n)^nt where:

  • P is the starting amount called the principle
  • r is the rat written as a decimal
  • n is the number of times compounded in a year
  • t is the number of years

Substitute a value into each variable to solve.

  • P = $147 since 10% of 1,470 is being invested which makes P = 0.10(1470) = 147.
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  • n = 12 because it is compounded monthly meaning 12 times a year.
  • t = 25 since it will earn for 25 years.

A = P (1+r/n)^{nt}\\A = 147(1 + \frac{0.035}{12})^{12*25}\\A = 147 ( 1 + 0.002916)^{300}\\A = 147(1.002916)^{300}\\A = 352.19

Repeat this process for each formula.

5 0
3 years ago
What value of c makes x2 − 24x + c a perfect square trinomial?<br><br> −144<br> −48<br> 48<br> 144
NARA [144]
I believe that the answer is 144 

8 0
3 years ago
Read 2 more answers
jami can now mow 1/6 acre in 8 minutes. if her rate is constant, can jami mow 1 and 1/2 acres in one hour? explain ur reasoning.
Jlenok [28]
We have that
 1 1/2 acres-------------> 1.5 acres
one hour----------------> 60 minutes

Step 1
I proceed to make a rule of three
<span>if Jami can now mow 1/6 acre -----------------------> in 8 minutes
1.5 acres----------------------------------------------> X
X=1.5*8/(1/6)=72 minutes

72 minutes > 60 minutes

therefore
</span><span>Jami can not mow 1 1/2 acres in an hour
</span><span>The time required by jami to mow 1 1/2 acres is 72 minutes</span><span>
</span>
3 0
3 years ago
Find the slope of the line that passes through the pair of points (6, 7) and (9, 2). User: Find the slope of the line that passe
DaniilM [7]
If we have two points;
A(x₁,y₁)
B(x₂,y₂)

m=slope

m=(y₂-y₁) / (x₂-x₁)

Therefore:
(6,7)
(9,2)

m=(2-7) / (9-6)=-5/3.

Solution₁= the solpe of the line that passes through the poitns (6,7) and (9,2) is m=-5/3.

(17,9)
(5,29)

m=(29-9) / (5-17)=20/-12=-5/3

Solution ₂: the slope of the line that passes through the  parir of points (17,9) and (5,29) is m=-5/3

Therefore, both lines have the same slope.
4 0
3 years ago
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