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Leya [2.2K]
3 years ago
7

Help me please I’ll donate money

Mathematics
1 answer:
Virty [35]3 years ago
6 0

12. It's similar to having an infinite number of solutions because there isn't a specific solution to answer the question.

13. For the equation 0.9x + 5.1x - 7 = 2(2.5x-3), there is only one solution and it is x=1

14. The error that your friend made was that she added extra 16x to the equation. the correct answer is that there is no solution.

16. the equation  6 (x+2)= 5 (x+7) has only one solution. it is x=3.

sorry i wasn't able to answer the other 3,

by the way you don't need to send money, because we are here to help



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BRAINLIEST FOR ANSWER WITH EXPLANATION<br> JUST ONE QUESTION ATTACHED BELOW:
skelet666 [1.2K]

Answer:

m=16

Step-by-step explanation:

(6+6)/m=6/8

12/m=6/8

M=16

3 0
3 years ago
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The simple interest formula is I = Prt, where I represents simple interest on an amount, P, for t years at a rate of r, where r
andrey2020 [161]

Answer:

$80

Step-by-step explanation:

From the question, we are given The simple interest formula as I = Prt,

where l = simple interest on an amount= $40

t= years=5years

at a rate r= 10%

The rate= 10/100= 0.1

Then since we are looking for P, we can make P subject of formula from this expression;

I = Prt

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P= 40/(0.1 ×5)

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5 0
3 years ago
Lateral area of cylinder with r=4 h=5​
yulyashka [42]

Answer:

formula: 2πrh

Step-by-step explanation:

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3 0
3 years ago
∆ABC is an isosceles triangle. The length of CB is 12 feet 4 inches and the congruent sides are
son4ous [18]

Answer:

Answer for 2nd is option c, for 3rd is option d, for 4th is option e

Step-by-step explanation:

As we know 1 ft.=12 in.

  1. In ΔABC

   ∴ The congruent sides are AB and AC respectively

  • CB =12 ft. 4 in.=148 in.
  • AB=\frac{3}{4}CB =111 in. =9 ft. 3 in.
  • AC=\frac{3}{4}CB =111 in. =9 ft. 3 in.

    ∵  <em>Perimeter of ΔABC</em> =AB+AC+CB

                                        =9 ft. 3 in. + 9 ft. 3 in. +12 ft. 4 in.

                                        =30 ft. 10 in.

    2. In ΔDEF

    ∴ The congruent sides are DE and DF respectively

  • DE =  6 ft. 3 in. =75 in.
  • DF =  6 ft. 3 in. =75 in.
  • Let the length of FE is equal to x
  • 0.75FE =DE =DF
  • 0.75x = 6 ft. 3 in. =75 in.
  • x =100 in. =8 ft. 4 in.

   ∵ <em>Perimeter of ΔDEF</em> =DE+DF+FE

                                        = 6 ft. 3 in. +6 ft. 3 in. +8 ft. 4 in.

                                        = 20 ft. 10 in.

    3. In ΔJKL

    ∴ The congruent sides are JL and KL respectively

  • JK = x+3
  • KL =4x-17
  • JL  =6x-45
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  • 4x-17 =6x-45  . . . . . . . . . . . . . . . . . . . . . . . (1)
  • Subracting 4x from both sides from eq 1
  • -17 =2x-45
  • Adding 45 on both the sides
  • 28 =2x
  • Dividing by 2 on both sides
  • 14 =x
  • JK = 14+3 =17
  • KL = 4×14-17 =39
  • JL = 6×14-45 =39

   ∵ <em>The dimensions of the ΔJKL are 39,39 and 17.</em>

6 0
3 years ago
If the second term of an arithmetic sequence is -2 and the fourth term is 6, find the seventh term.
zhenek [66]
18 would be the 7th so... hope it helps
6 0
3 years ago
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