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professor190 [17]
3 years ago
7

PLZ ANSWER I WILL MARK

Mathematics
2 answers:
tekilochka [14]3 years ago
6 0

Answer:

the total is 18

Step-by-step explanation:

if bill has 2 times less the amount of coins it means that Nancy has 12 coins and if you add them together its 18

marin [14]3 years ago
5 0

Answer:

23

Step-by-step explanation:

I had a similar problem.

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What it 7 divided by 8 in decimal form
goblinko [34]
Seven divided by eight is 0.88 or 0.875
8 0
3 years ago
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In the accompanying diagram, the legs of right triangle ABC are 5 and 12 and the hypotenuse is 13. What is the value of cos A? A
disa [49]
\cos A=\frac{5}{13}

answer: C

7 0
1 year ago
Roman solved the equation 5a+2b=10 for a. His steps are shown below. 1. Subtract 2b: 5a+2b-2b=10-2b 2. Multiply by 5: 5a+10-2b W
VladimirAG [237]

Answer:

In step 2, he needed to divide both sides of the equation by 5

Step-by-step explanation:

we have

5a+2b=10

Solve for a------> That means isolate the variable "a"

step 1

Subtract 2b to both sides

5a+2b-2b=10-2b

5a=10-2b

step 2

Divide by 5 both sides

5a/5=(10-2b)/5

a=(10-2b)/5

3 0
3 years ago
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Twice the product of 3and a number exceeds the sum of the number and 80 by 10.what is the number?
Hatshy [7]
First, create an equation with the criteria given.

If we let x be your number,
2(3x) = 80 + x + 10
(2(3x) is twice the product of 3 and x, and if it exceeds x+80 by 10, then we add 10 to x+80 to make the two sides of the equation equal.)

Now, solve for x.

6x=90+x \\ 5x=90 \\ x=18

6 0
3 years ago
Pleasee helppp insert two arithnetic means between -5 and 1
Salsk061 [2.6K]

Answer:

a₂ = -3

a₃  = -1

Step-by-step explanation:

We have to  insert two arithmetic means between -5 and 1

Let a₁ and b₂ be the two arithmetic means between -5 and 1

-5, a₂, a₃, 1

Here,

  • a₄ = 1
  • a₁ = -5

We know that the nth term of an Arithmetic sequence

aₙ = a₁ + (n-1)d

a₄ = -5 + (4-1)d

1 = -5 + 3d    

1  + 5 = 3d

3d = 6

Dividing both sides by 2

d = 2

Also

a₂ = a₁ + (2-1)d

a₂ = -5 + d

a₂ = -5 + 2          ∵ d = 2

a₂  = -3

a₃ = a₁ + (3-1)d

a₃  = -5 + 2d

a₃  = -5 + 2(2)   ∵ d = 2

a₃  = -5 + 4

a₃  = -1

Thus,

a₂ = -3

a₃  = -1

Thus, the sequence becomes:

-5, -3, -3, 1

3 0
2 years ago
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