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3 years ago

HELP ASAP i need too know these

Mathematics

2 answers:

katrin2010 [14]3 years ago

8 0

Answer:

3. y = 4

4. y = 40

Step-by-step explanation:

3. To find y, input the value of 2 for x in the equation y = 3x - 2.

y = 3(2) - 2

y = 6 - 2

y = 4

y is 4 when x is 2.

4. To find the answer we first have to make an equation in y=mx + b form, where b is the y-intercept and m is the slope. We know that the y-intercept is -5 because the table tells us that when x is zero, y is -5. So, we can use the y-intercept and a point In this example I will use point (6, 13)) to find the slope:

Input the values you know into the equation:

13 = 6m - 5

Add 5 to both sides to isolate the 6m:

18 = 6m

Divide both sides by 6 to isolate the m:

3 = m

Our slope is 3. Now that we know the slope and y-intercept, we can make our equation:

y = 3x - 5

We can use this equation to find y when x is 15:

Input 15 in place of x:

y = 3(15) - 5

Solve:

y = 45 -5

y = 40

When x is 15, y is 40.

Hope this helps :)

Oduvanchick [21]3 years ago

4 0

3) 4
I know this lol

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Answer:

$m=\frac{-2}{5}$

Step-by-step explanation:

Use the formula:

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3 years ago

Kris Byrant hit b baseballs yesterday. Today he hit 135 baseballs. Using b write an expression for the sum of the number of base

sleet_krkn [62]

Using "b", the expression for the sum of the number of baseballs Kris Byrant hit in two days is (135 + b).

As per data provided in the question statement, Kris Byrant hit "b" number of baseballs yesterday and he hit 135 baseballs today.

We have to find out the expression to express the sum of the number of baseballs Kris Byrant hit in two days using the variable "b".

As the question statement itself directs very clearly that We have to find out the expression to denote the sum of the number of baseballs Kris Byrant hit in two days using the variable "b", we will simply add the individual numbers of baseballs he hit on each day, i.e.,

(b + 135).

And then, we can use this expression to calculate the real number of baseball Kris Byrant hit in two days for (b = 120, say), i.e.,

If Kris Byrant hit 120 baseballs yesterday and he hit 135 baseballs today, he will have hit a total of (120 + 135) = 255 baseballs in two days.