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2 years ago

Help me ans should be well explained

Mathematics

2 answers:

seraphim [82]2 years ago

6 0

<h3>Length (L) of Rectangle = 40 m </h3><h3>Breadth (B) of Rectangle = 30m</h3><h3 /><h3>Perimeter of Rectangle:-</h3>

= 2(Length + Breadth)

= 2(40 + 30)

= 2(70)

= 140m

<h3>Area of Rectangle:-</h3>

= Length × Breadth

= 40 × 30

= 1200m^2

Therefore, The perimeter of the rectangle is 140m and the area of the rectangle is 1200m^2.

rusak2 [61]2 years ago

4 0

Length=L=40m
Breadth=B=30m

Perimeter:-

$\\ \sf\longmapsto 2(L+B)$

$\\ \sf\longmapsto 2(40+30)$

$\\ \sf\longmapsto 2(70)$

$\\ \sf\longmapsto 140m$

Area

$\\ \sf\longmapsto LB$

$\\ \sf\longmapsto 40(30)$

$\\ \sf\longmapsto 1200m^2$

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babunello [35]

First you subtract the two equations

x^2-2x+3-6x

You simplify that and get

x^2+4x+3 = 0

Now we solve using the quadratic formula.

We get x = -1 and x = -3.

Now we find the y values by plugging the x values into the equation.

f(x) is the same as y.

y = (-1)^2 - 2(-1) + 3

y = 1+2+3

y = 6

Now for the other x value.

y = (-3)^2 - 2(-3) + 3

y = 9+9

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2 years ago

Is 4/5 a solution of x<2?

krok68 [10]

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4 years ago

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A particle moves along the x-axis so that at time t≥0t\ge 0t≥0 its position is given by x(t)=−t3+6t2−9t+42.x(t)=-t^3+6t^2-9t+42.

riadik2000 [5.3K]

Answer: 4 units

Step-by-step explanation:

The given position function: $x(t)=-t^3+6t^2-9t+42.$ , where t≥0.

To determine: Total distance traveled by the particle from 0≤ t ≤ 4.0.

At t=0,

$x(0)=-(0)^3+6(0)^2-9(0)+42=42\\$

At, t=4,

$x(4)=-(4)^3+6(4)^2-9(4)+42\\\\=-64+6(16)-36+42=38$

Total distance traveled by the particle from 0≤ t ≤ 4.0 = |42-38| units

= 4 units

Hence, the distance traveled by the particle from 0≤t≤4.0 is 4 units.

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3 years ago

given that a test statistic in a left tailed test is z equals -1.25, use a 0.05 significance level to find the p-value and state

mr Goodwill [35]

Answer:

The p-value of the test is 0.106.

The null hypothesis will be accepted at 5% level of significance.

Step-by-step explanation:

The hypothesis test is left-tailed.

The test statistic value is: z = -1.25.

The significance level of the test is: α = 0.05.

The p-value of a left-tailed hypothesis test is:

$p-value=P(Z$

The p-value of the test is 0.106.

**Use the z-table for the probability.

Decision rule:

If the p-value is less than the significance level the null hypothesis will be rejected and if it is more than the significance level the null hypothesis will be accepted.

The p-value = 0.106 > α = 0.05.

The null hypothesis will be accepted at 5% level of significance.

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4 years ago

PLEASE HELP 30 POINTS AND BRANILEST

LUCKY_DIMON [66]

Answer:

Go through the explanation you should be able to solve them

Step-by-step explanation:

How do you know a difference of two square;

Let's consider the example below;

x^2 - 9 = ( x+ 3)( x-3); this is a difference of two square because 9 is a perfect square.

Let's consider another example,

2x^2 - 18

If we divide through by 2 we have:

2x^2/2 -18 /2 = x^2 - 9 ; which is a perfect square as shown above

Let's take another example;

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The above expression is the same as;

(x^3)^2 -( 8)^2= (x^3 + 8) (x^3 -8); this is a difference of 2 square.

Let's take another example

a^5 - y^6 ; a^5 - (y ^3)^2

We cannot simplify a^5 as we did for y^6; hence the expression is not a perfect square

Lastly let's consider

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(a^2 + b^2) ( a^2 - b^2)

3 0

4 years ago

Help me ans should be well explained ​

Help me ans should be well explained