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2 years ago

2 people walk 3 meters each opposite direction They both turn right & walk 4 meters each What is distance between them now

Mathematics

1 answer:

Andrej [43]2 years ago

3 0

I think it would be 8 meter

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Which pair of equations can be used to solve for x in PQR?

almond37 [142]

Answer:

Step-by-step explanation:

sin57° = $\frac{opposite}{hypotenuse}$ = $\frac{PQ}{PR}$ = $\frac{x}{18}$

∠ P = 180° - (90 + 57)° ← sum of angles in triangle

∠ P = 180° - 147° = 33° , then

cos33° = $\frac{adjacent}{hypotenuse}$ = $\frac{PQ}{PR}$ = $\frac{x}{18}$

Thus the 2 ratios used to solve for x are A

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3 years ago

If f(x) =x 2 + 10, what is f (-5)?

lisov135 [29]

Answer:

f(-5) = 35

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

f(x) = x² + 10

f(-5) is x = -5

Step 2: Evaluate

Substitute: f(-5) = (-5)² + 10
Exponents: f(-5) = 25 + 10
Add: f(-5) = 35

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2 years ago

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3 years ago

Two cylinders are similar. The surface

Y_Kistochka [10]

8:9 because you tak the square root of both

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3 years ago

What are the solutions to the system of equations? y=−x^2−5x−6 x+y=−3

Dmitriy789 [7]

Answer:

The solutions are the points (-3,0) and (-1,-2)

Step-by-step explanation:

we have

$y=-x^{2} -5x-6$ -----> equation A

$x+y=-3$ -----> equation B

Solve the system of equations by graphing

The solution of the system of equations are the intersection points both graphs

The solutions are the points (-3,0) and (-1,-2)

see the attached figure

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3 years ago