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Lena [83]
3 years ago
15

Pleased Help!! Need explained!

Mathematics
2 answers:
lakkis [162]3 years ago
8 0

Answer:

In question 1, n= 16

In question 2, n = -1

Step-by-step explanation:

Question 1:       -3n + 48 =0

Question 2:        -2n + 10 - 5n = 17

<u>To find n in Question 1</u>

-3n + 48 =0

3n = 48

n = 48/3

n = 16

<u>To find n in Question 2</u>

-2n + 10 - 5n = 17

-2n - 5n = 17 - 10

-7n = 7

n = 7/-7 = -1

n = -1

Therefor the value of n in question 1 is 16

and value of n in question 2 is -1

Artemon [7]3 years ago
3 0

Answer:

Problem 1: n = 16

Problem 2: n = -1

Step-by-step explanation:

Problem 1:

-3n + 48 = 0

We solve the equation for n.

First, subtract 48 from both sides.

-3n = -48

Now divide both sides by -3. This cancels out the negative on both sides:

n = 16

-2n + 10 -5n = 17

First, combine the terms with n:

-7n + 10 = 17

Now, combine the numbers that don't have n (subtract 10 from both sides).

-7n = 7

n = -1

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Fudgin [204]

Answer: She added 7x and 3y

Step-by-step explanation: The final answer should be 7x + 3y, not 10xy.

8 0
3 years ago
A card is picked at random from the following set. ​ ​What is P(9) ? Write your answer as a percentage in the box given below.
irina1246 [14]

Answer:

25%

Step-by-step explanation:

The (not mentioned in the question) set is: 6 7 8 9.

There are 4 total outcomes and only 1 favorable outcome, then the probability to pick a 9 is:

P(9) = favorable outcome/total outcomes

P(9) = 1/4 = 0.25 or 0.25*100 = 25%

4 0
2 years ago
How do i write 4n²/7 into a verbal expression ?​
Anna11 [10]

Answer:

four n squared divided by 7

Step-by-step explanation:

:) please thank me and mark me brainliest

6 0
3 years ago
<img src="https://tex.z-dn.net/?f=%28a%29%20%7B%20-%20%28b%29%7D%5E%7B2%7D%20" id="TexFormula1" title="(a) { - (b)}^{2} " alt="(
Cloud [144]

Answer:

 a - b2

Step-by-step explanation:

STEP  1 :

Trying to factor as a Difference of Squares:

1.1      Factoring:  a-b2  

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

        A2 - AB + BA - B2 =

        A2 - AB + AB - B2 =

        A2 - B2

Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check :  a1   is not a square !!

Ruling : Binomial can not be factored as the difference of two perfect squares

Final result :

 a - b2

<u><em>HOPE THIS HELPS!</em></u>

<u><em>PLEASE MARK BRAINLIEST! :)</em></u>

7 0
2 years ago
Complete the table of values fory=2x^2+x
Semmy [17]

Complete question:

y = 2x² + 2x - 3

x = -2 -1 0 1 2

Answer:

<u>Complete table of values</u>

x:   -2        -1         0          1          2

y:    1          -3       -3          1         9

Step-by-step explanation:

Given;

y = 2x² + 2x - 3

To complete the table of values of the equation above, we substitute the value of x into the given equation and solve for y.

when, x = -2

y = 2(-2)² + 2(-2) - 3

y = 8 - 4 - 3

y = 1

when x = -1

y = 2(-1)² + 2(-1) - 3

y = 2 - 2 - 3

y = -3

when x = 0

y = 2(0)² + 2(0) - 3

y = 0 - 0 - 3

y = -3

when x = 1

y = 2(1)² + 2(1) - 3

y = 2 + 2 - 3

y = 1

when x = 2

y = 2(2)² + 2(2) - 3

y = 8 + 4 - 3

y = 9

<u>Complete table</u>

x:   -2        -1         0          1          2

y:    1          -3       -3          1         9

7 0
2 years ago
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