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2 years ago

If a area of a rectangle is 45... set up an equation that must be true: w = x L = x-4

Mathematics

1 answer:

Stella [2.4K]2 years ago

5 0

Answer: x times (x-4)=45

Step-by-step explanation:

First since the area is 45 that’s what the equation has to be equal to.
To find the area you always have to do length times width. So the width (x) times the length (x-4) equals 45.

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Zach has $40,173 in his bank account. He recently decided to move to NYC to pursue an acting career and is not making money. He

Kamila [148]

Answer:

8 Months

Step-by-step explanation:

You would have to do 40,173 divided by 4,700 which gives your answer which is technically 8.54744680851 but for just month alone it's 8

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3 years ago

7x - 3 = 39 sloving linear equations

xxMikexx [17]

7x - 3 = 39
first add three to both sides
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3 years ago

Read 2 more answers

What is the length of the missing side

Paha777 [63]

13 because 40 and 25 would be to long and 8 would be to short

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3 years ago

Find the area of the given triangle to the nearest square unit. Angle a= 30 degrees, b=10, angle B=45 degrees

storchak [24]

Answer:

$A=34\ units^2$

Step-by-step explanation:

Suppose we have a general triangle like the one shown in the figure.

We know the angle A, the angle B and the length b.

$A = 30\°\\\\B = 45\°\\\\b = 10$

By definition I know that the sum of the internal angles of a triangle is always equal to 180 °.

$A + B + C = 180\\\\30 + 45 + C = 180$

We solve the equation and thus we find the angle C.

$C = 180 - 30-45\\\\C = 105$

We already know the three triangle angles.

Now we use the sine theorem to calculate the sides c and a.

The sine theorem says that:

$\frac{sin(A)}{a}=\frac{sin(B)}{b}=\frac{sin(C)}{c}$

Then

$\frac{sin(30)}{a}=\frac{sin(45)}{10}$

$\frac{sin(30)}{\frac{sin(45)}{10}}=a$

$a=7.071$

Also

$\frac{sin(105)}{c}=\frac{sin(45)}{10}$

$\frac{sin(105)}{\frac{sin(45)}{10}}=c$

$c=13.660$

Finally, we use the Heron formula to calculate the triangle area

$A=\sqrt{s(s-a)(s-b)(s-c)}$

Where s is:

$s=\frac{a+b+c}{2}$

Therefore

$s=\frac{7.071+10+13.660}{2}$

$s=15.37$

$A=\sqrt{15.37(15.37-7.071)(15.37-10)(15.37-13.66)}$

$A=34\ units^2$

3 0

3 years ago

-x < - 29 solve for x

AleksAgata [21]

Answer:

x<29

Step-by-step explanation:

divide both sides by -1 since x cannot be negative

4 0

3 years ago