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Rzqust [24]
4 years ago
15

Solve the equation 5y+6(3-y)-4y-7 Then show your work

Mathematics
1 answer:
babunello [35]4 years ago
4 0
Answer: 11 - 5y
==================================
Working:
5y + 6(3 - y) - 4y - 7
= 5y + 18 - 6y - 4y - 7
= 11 - 5y

You should "open" the brackets before anything else and then start adding and subtracting the ones with the "y" together and the normal numbers together
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MATH 5
-BARSIC- [3]

Answer:

3. 0.594. 4. 0.568. 1. 0.532. 2. 0.332

3 0
3 years ago
Last summer Myrtle, worked 45 hours and earned $443.70. She wanted to make at least $550 this summer. Using an inequality, find
Ierofanga [76]

Answer:

11 hours

Step-by-step explanation:

Using an inequality, find how many additional hours must she work in order to reach this goal?

From the above question, the term at least means less than or equal to and it is represented by the inequality = ≤

Hence,

Let the number of additional hours = h

Last summer Myrtle, worked 45 hours and earned $443.70.

The amount she earned per hour = $443.70/45

= $9.86

Our inequality equation is written as;

She wanted to make at least $550 this summer.

$9.86 × h ≤ $550

= 9.86h ≤ 550

h = 550/9.86

h = 55.780933063 hours

Approximately the additional hours she has to work =

55.780933063 - 45 hours

= 10 .780933063 hours

Approximately = 11 hours

8 0
3 years ago
What is the factor of k2 + k - 42
marin [14]

Answer:

(k + 7) • (k - 6)

Step-by-step explanation:

Final result :

 (k + 7) • (k - 6)

Reformatting the input :

Changes made to your input should not affect the solution:

(1): "k2"   was replaced by   "k^2".

Step by step solution :

Step  1  :

Trying to factor by splitting the middle term

1.1     Factoring  k2+k-42

The first term is,  k2  its coefficient is  1 .

The middle term is,  +k  its coefficient is  1 .

The last term, "the constant", is  -42

Step-1 : Multiply the coefficient of the first term by the constant   1 • -42 = -42

Step-2 : Find two factors of  -42  whose sum equals the coefficient of the middle term, which is   1 .

     -42    +    1    =    -41

     -21    +    2    =    -19

     -14    +    3    =    -11

     -7    +    6    =    -1

     -6    +    7    =    1    That's it

Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above,  -6  and  7

                    k2 - 6k + 7k - 42

Step-4 : Add up the first 2 terms, pulling out like factors :

                   k • (k-6)

             Add up the last 2 terms, pulling out common factors :

                   7 • (k-6)

Step-5 : Add up the four terms of step 4 :

                   (k+7)  •  (k-6)

            Which is the desired factorization

Final result :

 (k + 7) • (k - 6)

6 0
3 years ago
Write the word 'MATHEMATICS' using line segments and observe the number of angles more than a right angle and number of angles l
Leni [432]

Answer:

Here is a diagram I made that shows all of the angles of the letters. (By to the way, letters I, C, and S don't have any angles, so I didn't include them.)

Step-by-step explanation:

Download pdf
4 0
3 years ago
How long will it take you to double an amount of $500 if you invest it at a rate of 7% compounded monthly?   Round to 3 decimal
Lorico [155]

Answer:

9.931 years

Step-by-step explanation:

6 0
3 years ago
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