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3 years ago

A proportion is shown. x36=1512 What is the value of x?

2 answers:

7 0

The answer is 42. Divide by 36 each sides to get rid of 36. Then, the answer you get after you divide by 36 on each side is 42. Hopefully That helped :)

Fudgin [204]3 years ago

3 0

42 is the right answer

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What does x equal in :<br> 19=15x+14

umka21 [38]

$19=15x+14\ \ \ \ \ \ \ \ |subtract\ 14\\\\19-14=15x\\\\15x=5\ \ \ \ \ \ \ \ \ |:15\\\\x=\frac{5}{15}=\frac{1}{3}$

6 0

3 years ago

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How many digits are there in the Hindu-Arabic form of 25,840 x10^20?

melamori03 [73]

9514 1404 393

Answer:

Step-by-step explanation:

The place whose value is 10^n has n digits to the right of it. This number can be written as ...

0.25840×10^25

which makes the digit 2 be the 25th digit to the left of the decimal point.

There are 25 digits in the Hindu-Arabic form:

2,584,000,000,000,000,000,000,000

3 0

3 years ago

Add: (3x2 - 5x + 6) + (9 - 8x - 4x2) A) 12x2 - 13x + 2 B) 7x2 + 3x - 3 C) 7x2 - 13x + 15 D) -x2 - 13x + 15

kati45 [8]

Answer:

Step-by-step explanation:

So we have the expression:

$(3x^2-5x+6)+(9-8x-4x^2)$

Combine like terms:

$=(3x^2-4x^2)+(-5x-8x)+(6+9)$

Add or subtract:

$=(-1x^2)+(-13x)+(15)$

Simplify:

$=-x^2-13x+15$

Our answer is D

4 0

3 years ago

The length of a rectangle is 4 m less than the diagonal and the width is 5 m less than the diagonal. If the area is 82 m^2, how

nikklg [1K]

I hate rounding.

Let's call the diagonal x. It's the hypotenuse of the right triangle whose legs are the rectangle sides.

According to the problem we have a length x-4 and a width x-5 and an area

82 = (x-4)(x-5)

82 = x^2 - 9x + 20

0 = x^2 - 9x - 62

That one doesn't seem to factor so we go to the quadratic formula

$x = \frac 1 2(9 \pm \sqrt{9^2-4(62)}) = \frac 1 2(9 \pm \sqrt{329})$

Only the positive value makes any sense for this problem, so we conclude

$x = \frac 1 2(9 \pm \sqrt{329})$

That's the exact answer. Did I mention I hate rounding? That's about

x = 13.6 meters

Answer: 13.6

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It's not clear to me this problem is consistent. By the Pythagorean Theorem the diagonal satisfies

$x^2 = (x-4)^2 + (x-5)^2$

which works out to

$x=9 \pm 2\sqrt{10}$

That's not consistent with the first answer; this problem really has no solution. Tell your teacher to get better material.

5 0

3 years ago

I serve a volleyball at a 730 angle with the horizontal, and an initial speed of 5.6 feet per second. What is the component form

noname [10]

You would split out the velocity into x and y components.
X component: 5.6cos(73)= 1.637i
Y component: 5.6sin(73)= 5.355j

Therefore velocity in its component form is 1.637i + 5.355j ft/s

4 0

3 years ago

Read 2 more answers