Five less than twice a number is 7

Answers

Answer 1

Answer: Make the number a variable x and make an equation
2x-5=7
Then solve
2x=12
x=6
Hope this helps.

Answer 2

Answer: 5 less than twice a number is 7Is 6.Answer =6

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2x7+10^3+(10+6)I put it in a calculator and I got 1,030
but what I'm trying to figure out is how they got that.
Please explain clearly. Thank you!

Answers

Please, put away the calculator, pick up a pencil, and look at the problem.

Have you learned the "order of operations", or PEMDAS ? It's the key
to this problem ... knowing what to do first, and what to leave for last.

You do things in this order:

P . . . parentheses
E . . . exponents (powers)
M . . . multiplication
D . . . division
A . . . addition
S . . . subtraction

2 x 7   +   10³   +   (10 + 6)

Parentheses first: 2 x 7   +   10³   +      16

Powers next: 2 x 7   +   1000   +    16

Multiplication next: 14     + 1000 + 16

Add that up and what do you get ?   I got 1030 .

PEMDAS- parenthesis, exponents, multiplication, division, addition, subtraction
The calculator will solve the equation in this order. There for the 10+6=16,
then the 10^3=1000, then the 2*7=14.
Added all together you get 1030

|(8.6x107):(9.1x10-8)

Answers

Answer:

$9.45054*10^(14)$

Step-by-step explanation:

we have

$(8.6*10^(7) )/(9.1*10^(-8))=(8.6)/(9.1)*( 10^(7))*(10^(8))\n \n= (8.6)/(9.1)*( 10^(7+8))\n \n= (8.6)/(9.1)*( 10^(15))\n \n=0.945054*( 10^(15))\n \n=9.45054*10^(14)$

Answer:

$\large\boxed{9.45\cdot10^(14)}$

Step-by-step explanation:

$(8.6*10^7):(9.1*10^(-8))\n\n=(8.6)/(9.1)\cdot(10^7)/(10^(-8))\qquad\text{use}\ (a^n)/(a^m)=a^(n-m)\n\n=(86)/(91)\cdot10^(7-(-8))\n\n=(86)/(91)\cdot10^(7+8)\n\n=(86)/(91)\cdot10^(15)\n\n\approx0.945\cdot10^(15)\n\n=9.45\cdot10^(-1)\cdot10^(15)\qquad\text{use}\ a^n\cdot a^m=a^(n+m)\n\n=9.45\cdot10^(-1+15)\n\n=9.45\cdot10^(14)$

Which equations represent the line shown in the graph?Choose all answers that are correct.

A. y-3=3/5(x-2)

B. -3x+5y=1

C. 3/5x+1/5

D. y+1=3/5(x+2)

Answers

one way to find out is to subsiute the points and find which ones are true

the points are (3,2) and (-2,-1)
subsiute 3 for x and 2 for y, then -2 for x and -1 for y

y-3=3/5(x-2)
2-3=3/5(3-2)
-1=3/5(1)
-3=3/5 false

-3x+5y=1
-3(3)+5(2)=1
-9+10=1
correct
try the other
-3(-2)+5(-1)=1
6+-5=1
true
one answe ris B

3/5x+1/5
this is incompleteso I can't solve it
maybe it was supposed to be 3/5x+1/5=y, but I don't know

y+1=3/5(x+1)
2+1=3/5(3+1)
3=3/5(4)
3=12/5
false

the answe ris B (maybe C but I con't know)

the answer is most definitely C

Least to greatest 0.386 0.3 0.683 0.836

Answers

0.3, 0.386, 0.683, 0.836

What is the average of 64 and 45?

Answers

Answer:

54.5

Step-by-step explanation:

you times the two numbers then divide by two

Answer: 54.4

Step-by-step explanation:

What is the area of the figure?

_____ cm^2

Answers

You can find the area of this figure by finding the area of the square and then the area of the triangle. Once you find these 2 areas then add them together.

For the area of the square:
A= b x h
A = 4 cm x 6 cm
A = 24 cm²

For the area of the triangle:
A = b x h/2
A = 3 cm x 6 cm/2
A = 9 cm²

Total area = 24 cm² + 9cm²
Total area = 33 cm²

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