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3 years ago

-1 + a = -6 solve for a

Mathematics

1 answer:

devlian [24]3 years ago

8 0

Answer:

-1+a=-6

move constant and change its sign

a=-6+1

add the number... then the Answer is :-

a=-5

I HOPE THIS HELPS

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Joe wrote an inequality

pychu [463]

Answer:Please see answer in explanation column

Step-by-step explanation:

The sum of a number and 7 is not more than 10

Given answer: x + 7 < 10 , This is false

Reason :Not more than 10 means at most 10, less than or equal to 10 , " or " not greater than 10 "and therefore the correct inequality is written as

x + 7 ≤ 10

The product of a number and 4 is at least 20

Given answer: 4X > 20 ---- False

Reason :At least 20 means at no less than 20 " or " greater than or equal to 20 therefore the correct inequality is written as

4X ≥ 20

The difference between a 15 and a number is at most 12

Given answer: 15-x>12----False

Reason :At most 12 means " no more than 12 , " " less than or equal to 12 , " or " not greater than 12"therefore the correct inequality is written as

15-x ≤ 12

The quotient of a number and 8 is greater than or equal to

Given answer 8x <3 --False

Reason : It clearly stated greater than or equal to 3. Therefore the correct inequality is 8x ≥ 3

6 0

3 years ago

A calculator showed the answer to a multiplication problem as 2.8e–4.

jolli1 [7]

2.8 X 10-4. The last one

8 0

3 years ago

What is the converse of the conditional statement?

Svetach [21]

Answer:

If x + 1 is odd, then x is even.

Step-by-step explanation:

The converse of the statement ...

if P, then Q.

is ...

if Q, then P.

Here, we have P="x is even" and Q="x+1 is odd". The converse statement is ...

if x+1 is odd, then x is even.

7 0

3 years ago

Find a formula for the sun S of any three consecutive odd number?

bixtya [17]

Answer:

Let first no. be x

Therefore,

2nd no. is x+1

Third no. is x+2

SUM OF NO.'s=x+x+1+x+2

S=3x+3

S=3(x+1)

8 0

3 years ago

Read 2 more answers

A bus driver pays all tolls, using only nickels and dimes, by throwing one coin at a time into the mechanical toll collector.

lutik1710 [3]

Answer: a) An = An-1 + An-2

b) 55ways

Step-by-step explanation:

a) a nickel is 5 cents and a dime is 10cent so a multiple of 5 cents is the possible way to pay the tolls in both choices.

Let An represents the number of possible ways the driver can pay a toll of 5n cents, so that

An = 5n cents

Case 1: Using a nickel for payment which is 5 cents, the number of ways given as;

An-1 = 5( n-1)

Case 2: using a dime which is two 5 cents, the number of ways is given as;

An-2 = 5(n-2)

Summing up the number of ways, we have

An = An-1 + An-2

From the relation,

If n= 0, Ao= 1

n =1, A1= 1

b) 45 cents paid in multiples of 5cents will give us 9 ways(A9)

From the relation, we have that

Ao = 1

A1 = 1

An =An-1 + An-2

Ao = 1

A1 = 1

A2 = A1+Ao = 1+1= 2

A3 = A2 + A1 = 3

A4 = A3+A2=5

A5=A4+A3=8

A6=A5+A4=13

A7 =A6+A5 = 21

A8= A7+A6= 34

A9= A8+A7= 55

So there are 55ways to pay 45cents.

4 0

3 years ago