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3 years ago

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The perimeter of a certain rectangle is 16 times the width. The length is 12 cm more than the width. Find the length and width o

f the rectangle.

1 answer:

Blizzard [7]3 years ago

8 0

Check the picture below

surely you know how much that is.

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I need help plz

shusha [124]

The solution for given linear equation systems is (3,-4).

Option: C

<u>Step-by-step explanation:</u>

The given equations are 5x+3y=3 and x+y= -1.

Let us isolate x value from equation 5x+3y=3.

5x = 3-3y.

$x=\frac{3-3y}{5}$ .

Substitute this x value in equation x+y= -1.

$\frac{3-3y}{5}+y=-1$ .

After taking LCM for the denominator,

$\frac{3-3y+5y}{5}= -1$ .

3-3y+5y=-5.

2y=-8.

y=-4.

For $x=\frac{3-3y}{5}$ substitute the y value.

$x=\frac{3-3(-4)}{5}$ .

$x=\frac{3+12}{5}$ .

$x=\frac{15}{5}$ .

x=3.

∴ The solution is (3,-4).

8 0

3 years ago

00.25 divided by 0.07

kipiarov [429]

Here is ur answer
0.357142857142857

4 0

3 years ago

Read 2 more answers

From least to greatest would this be right or do I have to change it?<br><br> 177,156,99,87

harina [27]

Answer:

From least to greatest it would be 87, 99, 156, 177

Step-by-step explanation:

The statement "from least to greatest" means starting from the lowest value and transitioning to the greatest value/

Think of it as least -> greatest.

3 0

3 years ago

a boy is standing on a pole of height 14.7m throws a stone upwards. it moves in a vertical line slightly away from the pole and

fomenos

Answer:

The time taken for the upward motion is 1 second. The same time is taken for the downward motion

It reaches a maximum height of 4.9 meters.

Step-by-step explanation:

The equation of motion is:

$x(t) = -4.9t^{2} + 9.8t$

Since the term which multiplies t squared is negative, the graph is concave down, that is, x increases until the vertex, where it reaches it's maximum height, then it decreases.

Vertex of a quadratic equation:

Quadratic equation in the format $x(t) = at^{2} + bt + c$

The vertex is the point $(t_{v}, x(t_{v}))$ , in which

$t_{v} = -\frac{b}{2a}$

In this question:

$x(t) = -4.9t^{2} + 9.8t$

So $a = -4.9, b = 9.8$

Vertex:

$t_{v} = -\frac{9.8}{2*(-4.9)} = 1$

The time taken for the upward motion is 1 second.

$x(t_{v}) = x(1) = 9.8*1 - 4.9*(1)^{2} = 4.9$

It reaches a maximum height of 4.9 meters.

Downward motion:

From the vertex to the ground.

The ground is t when x = 0. So

$-4.9t^{2} + 9.8t = 0$

$4.9t^{2} - 9.8t = 0$

$4.9t(t - 2) = 0$

$4.9t = 0$

$t = 0$

Or

$t - 2 = 0$

$t = 2$

It reaches the ground when t = 2 seconds.

The downward motion started at the vertex, when t = 1.

So the duration of the downward motion is 2 - 1 = 1 second.

5 0

3 years ago

A college has an acceptance rate of 17%. If 3,240 students apply, about

zloy xaker [14]

Answer:

550

Step-by-step explanation:

so we know that 17% of everyone who applies (3,240) will be accepted.

0.17*3,240= 550.8

550 students will be accepted

we have to round down as only 17% can be accepted and u cant have 0.8th of a person

hope this helps

6 0

3 years ago