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Karolina [17]
3 years ago
14

ok what about this.. i'm sorry i just can't think straight at the moment i have too much going on.. 2(-10)-9y=-38 find the value

of y
Mathematics
1 answer:
Natasha2012 [34]3 years ago
4 0

2 (-10) -9y = -38

-20 - 9y = -38

-9y = -38 + 20

-9y = -18

y = -18/-9

y = 2

The value of y is 2

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The sum of two numbers is 51. Four times the smaller number is 24 more than the larger number. What are the numbers?
KiRa [710]

The smaller number is 15 and larger number is 36.

Step-by-step explanation:

Let,

Smaller number = x

Larger number = y

According to given statement;

The sum of two numbers is 51.

x+y = 51     Eqn 1

Four times the smaller number is 24 more than the larger number.

4x = y+24  

4x - 24 = y

y = 4x-24     Eqn 2

Putting value of y from Eqn 2 in Eqn 1

x+(4x-24)=51\\x+4x-24=51\\5x=51+24\\5x=75

Dividing both sides by 5

\frac{5x}{5}=\frac{75}{5}\\x=15

Putting x=15 in Eqn 2

y=4(15)-24\\y=60-24\\y=36

The smaller number is 15 and larger number is 36.

Keywords: linear equation, substitution

Learn more about linear equations at:

  • brainly.com/question/9720317
  • brainly.com/question/9621364

#LearnwithBrainly

5 0
3 years ago
Read 2 more answers
(25 points !)
Vedmedyk [2.9K]
You would add.
So the equation would be 1 3/4+1/4 which equals 2.
I hope this helped!:)
3 0
3 years ago
Read 2 more answers
Please help me solve
Helen [10]

Answer:

$110

Step-by-step explanation:

we know

selling price = cost price + profit.

given

selling price of TV = $121

profit = 10%of cost

selling price of TV = cost of TV + 10%cost of TV

121 = cost of TV + 10/100 cost of TV

=> 121 = (100 cost of TV + 10 cost of TV)/100

=> 121*100 = 110 cost of TV

=> cost of TV = 121*100/110 = 110

Thus, cost price of TV is $110(option A)

8 0
4 years ago
The function f(x) = –x2 + 60x – 116 models the monthly profit, in dollars, a shop makes for repairing windshields, where x is th
Fynjy0 [20]
The function is: f ( x ) = - x² + 60 x - 116 is in the form: f ( x ) = a x² + b x + c
Part A:
x = -b / 2 a = - 60 / ( - 2 ) = 30
Then we will charge it into the function:
f ( 30 ) = - 30² + 60 · 30 - 116 = - 900 +1,800 - 116 = 784
The vertex is ( 30, 784 ).
It means that the maximum profit is $784, when 30 windshields are repaired.
Part B:
x 1/2 = ( -60 +/- √(3600 - 464 )/ (- 2 ) = ( -60 +/- 56 ) / ( - 2 )
x 1 = 2, x 2 = 58
It means that a shop has to repair at least 2 windshields and not more than 58 windshields for making a profit.
4 0
4 years ago
Please help soon! I have a trig question...
larisa86 [58]

The value of x will be 33 units approximately. Thus, option A is correct.

<h3>What are trigonometric identities?</h3>

Trigonometric identities are the functions that include trigonometric functions such as sine, cosine, tangents, secant, and, cot.

We need to find the value of x

so first

Tan 60 = Perpendicular / 11√6

Perpendicular = 1.732 (11√6)

Perpendicular = 46.66

Then,

Sin 45 = Perpendicular / x

Sin 45 = 46.66/ x

x = 33.00

So, the value of x will be 33 units approximately.

Thus, option A is correct.

Learn more about trigonometric;

brainly.com/question/21286835

#SPJ1

5 0
2 years ago
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