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Ymorist [56]
2 years ago
13

Pls help I'm stuck on these questions and i need to turn this in tomorrow ​

Mathematics
1 answer:
MArishka [77]2 years ago
6 0

Answer:

Step-by-step explanation:

11) 4x+2=5x-10 => 4x-5x=-10-2 => -x=-12 => x=12

12)25x=24x+4 => x=4

13)20x=21x-5 => -x=-5 => x=5

14)20x+10x=180 => 30x =180 =>x=6

To understand it better,you may check the picture down below.

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The length of a parking Lot is 5 yards more than the width. If the area of the parking lot is 66 square yards, find the dimensio
Brums [2.3K]

Answer:

  6 yards by 11 yards

Step-by-step explanation:

Factors of 66 are ...

  66 = 1·66 = 2·33 = 3·22 = 6·11

The last pair of factors differ by 5, so represent the solution to the problem.

The width of the parking lot is 6 yards; the length is 11 yards.

7 0
3 years ago
Combine like terms 18x-(-7x)+31-(-37)-5x
viktelen [127]

Answer:

20x+68

Step-by-step explanation:

6 0
3 years ago
Given a = 2i+j – 2k<br> b= -1 – 7j+k<br> Find a x b
castortr0y [4]

Step-by-step explanation:

a = 2i + j - k

b = -1 -7j + k

a × b = (2i + j - k) (-1 + 7j + k)

-2i + 14ij + 2ik - j + 7j^2 + jk + k -7jk - k^2

-2i + 14ij + 2ik -j +7j^2 +jk - 7jk + k - k^2

-2i + 14ij + 2ik - j +7j^2 - 6jk + k - k^2

7 0
3 years ago
The roots of the equation 2x^2+8x-7=-2 are?
olchik [2.2K]
<span>2x^2+8x-7=-2
</span><span>2x^2+8x - 5 = 0

using the formula:- x = [-8 +/- sqrt(8^2 - 4*2*-5) ]  / 4
                                  =  -2 +/- sqrt 104)/2
                                  = 0.5495 ,   -4.549
</span>
6 0
3 years ago
Tricia and Melanie are both saving money for their summer vacations. They both began saving at the same time. Tricia started wit
fomenos

Answer:

Approximately 2 months

Step-by-step explanation:

Tricia: f(d) = 5.15m + 10.25

Melanie: f(d) = 10.25m

f(d) is the total savings altogether

m is the amount of months

5.15(2) + 10.25 = 20.55

10.25(2) = 20.50

They will have the same amount of savings in approximately 2 months

1.990291 is the actual time (in months) they will be the same

4 0
3 years ago
Read 2 more answers
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