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3 years ago

HELP ME WALLAH PLSSSSS

Mathematics

2 answers:

max2010maxim [7]3 years ago

5 0

Answer:

hope this helped :D

Nutka1998 [239]3 years ago

4 0

The answer to that is 81 :)

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Given:3(x-4)=2x+7 prove: x=19 proof:

spayn [35]

3(19-4)=2(19)+7
distribute the 3
57-12=38+7
45=45

3 0

3 years ago

Solve for xxx. Enter the solutions from least to greatest. x^2 + x - 30 = 0x 2 +x−30=0

AfilCa [17]

Given:

The quadratic equation is:

$x^2+x-30=0$

To find:

The solutions of the given equation.

Solution:

We have,

$x^2+x-30=0$

Splitting the middle term, we get

$x^2+6x-5x-30=0$

$x(x+6)-5(x+6)=0$

$(x+6)(x-5)=0$

Using zero product property, we get

$x+6=0$ and $x-5=0$

$x=-6$ and $x=5$

Therefore, the solutions of the given quadratic equation are -6 and 5.

6 0

3 years ago

I don’t understand what they are trying to say

Anni [7]

Answer:

they are asking u if the antibiotic is working the answer is b

3 0

3 years ago

Three times a number is the same as 28 more than 6 times the number. Find the number. If n is "the number," which equation could

aksik [14]

Answer:

3n = 6n + 28

Explanation:

The number we are dealing with is "n"

We will proceed by converting the English into Math:

1- Three times the number = 3 * n = 3n

2- Six times the number = 6 * n = 6n

3- 28 more than 6 times the number means that we will add 28 to the value 6n. This will give 6n + 28

Finally, we are given that:

3n is the same as (6n + 28). This means that they are both equal.

Therefore, our equation would be:

3n = 6n + 28

Hope this helps :)

5 0

3 years ago

Read 2 more answers

Thirty students bought pennants for the football game. Plain pennants cost $4 each and fancy ones cost $8 each. If the total bil

sammy [17]

Answer:

number o students bought pennants = 18

number of student bought fancy ones=12

Step-by-step explanation:

Let x be the number o students bought pennants

and y be the number of student bought fancy ones

total 30 students

$x+y= 30$

$y=30-x$

Plain pennants cost $4 each and fancy ones cost $8 each.

$4x+8y=168$

Substitute 30-x for y in second equation

$4x+8(30-x)=168$

$4x+240-8x=168$

$240-4x=168$

Subtract 240 from both sides

$-4x=-72$

divide both sides by -4

x=18

$y=30-x$

$y=30-18= 12$

number o students bought pennants = 18

number of student bought fancy ones=12

6 0

4 years ago