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Ber [7]
2 years ago
15

Help please!!!!!11!!!1!!

Mathematics
1 answer:
dedylja [7]2 years ago
8 0

Answer:

2.1 meters

Step-by-step explanation:

13.8=2w+2(w+2.7)

13.8=2w+2w+5.4

13.8=4w+5.4

8.4=4w

2.1=w

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Rewrite this expression using distributive property: 4a + 4b - 5
Triss [41]

Answer:

4(a + b) - 5

Step-by-step explanation:

Pull out the common factor

5 0
2 years ago
Two consecutive numbers whose squares add up to 685
SVEN [57.7K]

Question 790617: The sum of the squares of two consecutive integers is 685. Find the integers.

I tried solving this myself and got 324 and 325 which is not the right answer, I'm not very good with word problems. Thank you in advance!

(Scroll Down for Answer!)

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Found 2 solutions by rothauserc, stanbon:Answer by rothauserc(4570) About Me  (Show Source):

You can put this solution on YOUR website!

we are given the following

x^2 +(x+1)^2 = 685

x^2 +x^2+2x+1 = 685

2x^2 +2x = 684

x^2 +x = 342 and

x^2 +x -342 = 0

use quadratic equation to solve for x

x = (-1 + or - square root(1 - 4*1*(-342)) / 2

x = (-1 + or - 37) / 2

the problem does not state if our consecutive integers are positive or negative

x = 18 or -19

18^2 + 19^2 = 685

324 + 361 = 685

685 = 685

now

-19^2 + -18^2 = 685

361 + 325 = 685

so our integers are 18, 19, -19, -18

Answer by stanbon(75874) About Me  (Show Source):

You can put this solution on YOUR website!

The sum of the squares of two consecutive integers is 685. Find the integers.

--------

1st: x

2nd: x+1

------

Equation:

x^2 + (x+1)^2 = 685

x^2 + x^2 + 2x + 1 = 685

Step-by-step explanation:

8 0
3 years ago
Someone please help me I’ll give out brainliest please dont answer if you don’t know
klemol [59]

Answer:

-9p+3

plz mark me as brainliest

6 0
3 years ago
Read 2 more answers
Which of the following best describes the graph of this system of equations ? y=-2x+3 and 5y=-10x +15
ELEN [110]

Remark

When talking about straight lines, D is never true. Never.

C is possible, but in this case not true. Read on.

B. Might be true but in this case it is not. The lines (to be parallel) have to have the same number in front of the x. These two lines do when you divide through by 5. But the y intercept has to be different. That is not so in this case. So B is incorrect.

A is your answer. If you divide through by 5 on the second one, you get the first one. They are identical.

6 0
3 years ago
A new employee charged $3980 on his credit card to relocate for his first job.After noticing that the interest rate for his bala
olga nikolaevna [1]

Answer:

that should be how you would solve those questions..

8 0
3 years ago
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