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3 years ago

Please help 1st grade homework

Mathematics

2 answers:

serious [3.7K]3 years ago

7 0

Answer:

2. 7-0=7

7-1=6

7-2=5

7-3=4

7-4=3

7-5=2

7-6=1

7-7=0

Step-by-step explanation:

To get any of these answers you just subtract 7 from by any number 1-7.

just olya [345]3 years ago

7 0

7-3=4 is one of the answers that is correct ...if u put this answer than just circle 3 :)

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A pumpkin is launched directly upwards at 72 feet per second from a platform 24 feet high. The pumpkins height, h, at time t sec

STALIN [3.7K]

Answer: Maximum height = 105 feet

And, It takes 9/4 seconds to reach that point.

Step-by-step explanation:

Here the given function that shows the height of the pumpkin,

$h(t) = -16t^2 + 72t + 24$ --------(1)

Where t is the time in second.

Differentiating equation (1) with respect to t,

We get, $h'(t) = -32 t + 72$

Again differentiating above equation with respect to t,

We get, $h''(t) = -32$

For maximum or minimum, $h'(t) = 0$

$- 32 t + 72 = 0$

$32 t = 72$

$t = \frac{9}{4}$

At t = 9/4 , h''(t) = Negative value,

Therefore, At t = 9/4 seconds, h(t) is maximum,

And, the maximum value is,

$h(\frac{9}{4} ) = -16(\frac{9}{4})^2 + 72(\frac{9}{4}) + 24$

$h(\frac{9}{4} ) = -16(\frac{81}{16})+ 72(\frac{9}{4}) + 24$

$h(\frac{9}{4} ) = -81 + 162 + 24=105$

Therefore, the maximum height of the pumpkin is 105 feet at 9/4 seconds

8 0

3 years ago

The line with equation y = 2 x + 3 is reflected in the x -axis. Which of the following is the equation of the new line?

aliina [53]

Answer:

The equation of the new line is $y = -2x - 3$

Step-by-step explanation:

Reflecting a function over the x-axis:

Suppose we have a function y = f(x)

Suppose y' is the function y, reflected over the x-axis. Their relation is:

y' = -y

In this question:

Line with equation $y = 2x + 3$

Reflection over the x-axis:

We have that:

$y = -(2x + 3) = -2x - 3$

The equation of the new line is $y = -2x - 3$

4 0

3 years ago

6 x +4 + 10x - 9 + 8x - 7=

trasher [3.6K]

Answer:

24x - 12

Step-by-step explanation:

6x + 4 + 10x - 9 + 8x - 7

6x + 10x + 8x + 4 - 9 - 7

24x - 12

6 0

2 years ago

How far apart are the cities ??

Scilla [17]

DONT go into those links they’re scams

6 0

3 years ago

There were seventeen thousand four hundred nine people at a baseball game. What is this number in expanded form?

padilas [110]

Hi!

<h3>Expanded form is when we multiply each of the digits by how many 0s they have. </h3>

So 253 is (2 x 100) + (5 x 10) + (3 x 1).

17,000

400

(<u>17 x 10,000) + (4 x 100) + (9 x 1)</u>

<h2>The answer is C) (<u>17 x 10,000) + (4 x 100) + (9 x 1)</u> (which equals 17,409)</h2>

Hope this helps! :)

-Peredhel

7 0

3 years ago