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3 years ago

What is the value of XY/z if x=1 y=-10 and z=2 A.5 B.-5 C.1/5 D.-1/5

Mathematics

2 answers:

Oliga [24]3 years ago

6 0

The answer is B. If you substitute the values of x, y and z in you get 1 * -10 which just is -10. -10 / 2 = -5.

Mashutka [201]3 years ago

5 0

Hi Xxmirzxxx,

Solution:

XY/z

$=\frac{x * y}{z}$

$=\frac{1 * -10}{2}$

$=\frac{-10}{2}$

$= -5$

Final Answer: -5

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See attachment below

KatRina [158]

Answer: Third Option

$x=1.469743$

Step-by-step explanation:

We have the following exponential equation

$3^{x+1}=15$

We must solve the equation for the variable x

To clear the variable x apply the $log_3$ function on both sides of the equation

$log_3(3^{x+1})=log_3(15)$

Simplifying we get the following:

$x+1=log_3(15)$

To simplify the expression $log_3 (15)$ we apply the base change property

$log_b(y)=\frac{log(y)}{log(b)}$

This means that:

$log_3 (15)=\frac{log(15)}{log(3)}$

Then:

$x+1=\frac{log(15)}{log(3)}$

$x=\frac{log(15)}{log(3)}-1$

$x=1.469743$

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3 years ago

Write a number that has a hundreds digit that is greather than its tens digits

kvasek [131]

Answer:

Step-by-step explanation:

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From her window 5m above the ground, Sherri spots a turtle on the ground at a 34 degree angle of depression. To the nearest tent

Thepotemich [5.8K]

Let y be the distance from the turtle to the base of the building.

tan (34) = 5/y
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4 years ago

A tower that is 125 feet tall casts a shadow 173 feet long find the angle of elevation of the sun to the nearest degree

Alik [6]

Applying the tangent ratio, the angle of elevation of the sun, to the nearest degree, is: 36°.

<h3>What is the Tangent Ratio?</h3>

In a right triangle, tan ∅ = opposite length / adjacent length is the tangent ratio.

Given the following:

Angle of elevation = ∅
Opposite length = 125 ft
Adjacent length = 172 ft

Apply the tangent ratio:

tan ∅ = 125/172

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∅ ≈ 36°

Learn more about the tangent ratio on:

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2 years ago

What is the a, b, and c of the following quadratic y = - 4x ^ 2 + 5x - 3

Rudik [331]

Answer:

A = -4

B = 5

C = -3

Step-by-step explanation:

Standard form of a quadratic equation is y = Ax² + Bx + C

In the quadratic y = -4x² + 5x - 3, we can use this standard form to find A, B, and C.

Since -4 is the coefficient to x², A is -4.

Since 5 is the coefficient to x, B is 5.

Lastly, since -3 is the last term, C is -3.

So, the answer is:

A = -4

B = 5

C = -3

3 0

3 years ago