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pishuonlain [190]
3 years ago
6

Help meeee plssss........

Mathematics
2 answers:
Delicious77 [7]3 years ago
7 0

Answer:

the one that you choose should be the right one. The only other equation that "could" work is 10-2n=12

Step-by-step explanation:

kumpel [21]3 years ago
6 0

Answer:

2n-10=12

Step-by-step explanation:

twice a number = 2n

the difference between 2n and 10 = 2n - 10

equals to 12 = 2n - 10 = 12

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Sally is making pillow covers. The last step is to add trim. She purchased 1 yard of trim, but used 3/8 of it on another project
makkiz [27]

Answer:

5/16 of a yard per pillow

Step-by-step explanation:

1. Divide 5/8 by 2 (or 2/1)

2. 5/8 * 1/2 (following the division of fraction models of 'keep, change, flip'

5*1 = 5 and 8 * 2 = 16      5/16

6 0
3 years ago
Marco can paddle his canoe at a rate of 6 miles per hour on unmoving water. However, today Marco is canoeing down (with the curr
Radda [10]

Answer:

S = v1 t1 = 7 t1    traveling downstream

S = v2 t2 = 5 t2    traveling upstream

7 t1 = 5 t2

7 (6 - t2) = 5 t2     since t1 + t2 = 6

42 - 7 t2 = 5 t2

t2 = 42 / 12 = 3.5 hrs so t1 = 2.5 hrs

S = 7 t1 = 7 * 2.5 = 17.5 mi

Also, S = 5 t2 = 5 * 3.5 = 17.5 mi

3 0
2 years ago
A rectangle with a perimeter of 19m^2+2m-10 and a width of m^2 write an expression for the lenght
expeople1 [14]

Answer:

8.5m^{2}+ m -5

Step-by-step explanation:

Since perimeter, P=19m^{2}+ 2m -10 and we know that P=2(l+w) then P=2(l+m^{2})=2l+2m^{2}

The length will be 2l=19m^{2}+ 2m -10-2m^{2}=17m^{2}+ 2m -10

Now l=8.5m^{2}+ m -5

6 0
3 years ago
6. what is the parimeter of triangle ABC<br>8. What is the value of x​
nalin [4]

<u>Answer:</u>

Perimeter = 20 units

x = 120°

<u>Step-by-step explanation:</u>

We are given a triangle ABC with known side lengths for all three sides and an inscribed circle.

We are to find the perimeter of triangle ABC and the value of x.

Perimeter of triangle ABC = 2 + 2 + 5 + 5 + 3 + 3 = 20 units

The kite shape at the end is a quadrilateral which has a sum of angles of 360 degrees.

Two out of four angles are right angles and one is 60 so we can find the value of x.

x = 360 - (90 + 90 + 60) = 120°

7 0
3 years ago
Read 2 more answers
the numerator of a fraction is 1 more than twice its denominator. if 4 is added to both the numerator and the denominator, the f
maria [59]
5.
the equation looks like:
((2x+1)+4)/((x)+4)= 5/3
then you do cross multiplication and get:
6x+3+12=5x+20
subtract 5x on each side. subrtract the 3 and 12 from the 20.
and you get your answer 5=x
3 0
3 years ago
Read 2 more answers
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