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Ratling [72]
3 years ago
5

Solve by using trial and error method : 2x + 3 = 13​

Mathematics
2 answers:
Lynna [10]3 years ago
8 0
Answer is 5

2•5=10

10+3=13
Roman55 [17]3 years ago
5 0
Answer: x = 5

Explanation:
2•5 = 10
10 + 3 = 13

Hopefully this helps you.

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(2r - 6)(-5r+4) what is the product
Akimi4 [234]

Answer:

-10r^{2} +38r-24

Step-by-step explanation:

Apply FOIL method: (a+b)(c+d)=ac+ad+bc+bd

a=2r,b=-6,c=-5r,d=4

=2r(5-r)+2r*4+(-6)(-5r)+(-6)*4

Apply minus - plus rules

+(-a)=-a,(-a)(-b)=ab

=-2*5rr+2*4r+6*5r-6*4

Simplify

Multiply -2*5rr=-10r^{2}

=-10r^{2} +2*4r+6*5r-6*4

Multiply 2*4r=8r

=-10r^{2} +8r+6*5r-6*4

Multiply 6*5r=30r

=-10r^{2} +8r+30r-6*4

Combine like terms

=-10r^{2} +38r-6*4

Multiply -6*4=-24

=-10r^{2} +38r-24

-10r^{2} +38r-24

6 0
3 years ago
The length of a swimming pool is 22 ft. The width is 40 ft. If the volume of the pool is 2,500 ft³, which equation below could b
AURORKA [14]
The equation best used would be 2500=22*40*d
5 0
3 years ago
Read 2 more answers
What is the answer?????
Gnesinka [82]

Answer:

Step-by-step explanation:

m+2/2 = 1/2

m=0.5

so

2m+4=5 is the correct answer

3 0
3 years ago
Helppppp meeee pleaseeee in horrible at math
rosijanka [135]
Circumference = 2×3.14×r
3.14 is pie and r is the radius.
To find the radius you divide the diameter by 2.
19 ÷ 2 = 9.5
2×3.14×9.5 = 59.66
Multiply 59.66 by 6 because ther are 6 pennies.

59.66 × 6 = 357.96 mm.
4 0
3 years ago
What is the total of 49 1/4+3 3/8
zepelin [54]
52 5/8 because 49 + 3 = 52 and 2/8 + 3/8 = 5/8
3 0
3 years ago
Read 2 more answers
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