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3 years ago

What is the solution of the equation y=7x-2

Mathematics

1 answer:

3241004551 [841]3 years ago

6 0

Answer:

1/7y and 2/7

Step-by-step explanation:

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How to solve -7-8(6x+5)

koban [17]

Answer: -47 - 48x

Step-by-step explanation: When you first take a look at this problem, it's tempting to want to subtract -7 - 8 to get -15 and then distribute the -15 through the parentheses.

You wouldn't want to subtract however before you distribute because the distributive property is a form of multiplication and remember from your order of operations that multiplication comes before subtraction.

So the first thing you want to do here is distribute and change the minus sign in front of the -8 to plus a negative 8 so that you know you are distributing a -8 through your parentheses.

So we have -7 + -8 times 6x which is -42x + -8 times 5 which is -40.

Now we have -7 + -48x + -40.

Now just combine your like terms. -7 + -40 is -47 and plus a negative 48x can be written as -48x so we have -47 - 48x.

So your answer is just -47 - 48x.

6 0

4 years ago

What is the expanded form of 503.208

xxMikexx [17]

Answer: 500 + 3 + .200 +.008

Step-by-step explanation: You add 500 and 3 then after you get your number add .200 then add .008

6 0

3 years ago

Stephen kicked a ball inside. The equation that represents the height h in feet of the ball after being kicked and elapsed amoun

kodGreya [7K]

Answer:

The maximum height of the ball is: 14.0625ft

Step-by-step explanation:

The missing information is:

$h(t) = 30t - 16t^2$

Required

The maximum height the ball attained

First, we calculate the time to reach the maximum height.

For a function: $h(t) = at^2 + bt + c$

The maximum is: $t = \frac{-b}{2a}$

So, the maximum of $h(t) = 30t - 16t^2$ is:

$t = \frac{-b}{2a}$

Where

$a = -16; b = 30$

So:

$t = -\frac{30}{2*-16}$

$t = -\frac{30}{-32}$

$t = \frac{30}{32}$

$t = 0.9375$

The maximum height is then calculated as:

$h(t) = 30t - 16t^2$

$h(0.9375) = 30 * 0.9375- 16 * 0.9375^2$

$h(0.9375) = 28.125- 14.0625$

$h(0.9375) = 14.0625$

8 0

3 years ago

Can you solve this? ;)

katovenus [111]

Hi there!

The answer is C.
$25x + 12y + 4 \leqslant 130$

The question has already revealed the following data:
x = number of tickets.
y = number of t-shirts.

We can now find the total cost function.
The cost of 1 ticket is $ 25
and therefore the total cost for all of the tickets is $25 ×
the amount of tickets, mathematically $25 × x, hence 25x.

The cost of 1 shirt is $ 12
and therefore the total cost for all of the tickets is $12 ×
the amount of shirts, mathematically $12 × y, hence 12y.

When making the total cost function, don't forget to include the service fee of $4.

Now we can conclude that the total cost function is the following:
$25x + 12y + 4$

Maya only has $130 and therefore the total cost must be smaller than or equal to this amount of money. The answer is C.
$25x + 12y + 4 \leqslant 130$

7 0

3 years ago

Multiples of 5 less than 40

mariarad [96]

Answer: 5, 10, 15, 20, 25, 30, & 35

4 0

3 years ago

Read 2 more answers