All categories

3 years ago

Marcy played the piano for 45 minutes.She stopped playing at 4:15 P.M.At what time did she start playing the piano

Mathematics

1 answer:

musickatia [10]3 years ago

3 0

15-45=-30
60-30=30
so the answer is 3:30

You might be interested in

7. You are saving $12 per week to purchase a new kayak. Prices start at $300 and

Dovator [93]

Answer:

5>67=87

Step-by-step explanation:

pls mark brainlyest

7 0

3 years ago

Read 2 more answers

Which best explains why this triangle is or is not a right triangle?

olchik [2.2K]

Answer:

Step-by-step explanation:

If it is a right triangle, by pythagorous theorem, 39^2 = 36^2 + 15^2

or, 36^2 + 15^2 - 39^2 = 0

6 0

3 years ago

Read 2 more answers

Da A Solve the equation 2x^2+3=0

Anika [276]

Answer:

x = ±i(√6 / 2)

General Formulas and Concepts:

Pre-Algebra

Equality Properties

Algebra I

Solving quadratics

Algebra II

Imaginary root i

√-1 = i

Step-by-step explanation:

Step 1: Define

Identify

2x² + 3 = 0

Step 2: Solve for x

[Subtraction Property of Equality] Subtract 3 on both sides: 2x² = -3
[Division Property of Equality] Divide 2 on both sides: x² = -3/2
[Equality Property] Square root both sides: x = ±√(-3/2)
Simplify: x = ±i(√6 / 2)

4 0

3 years ago

In a Gallup poll of randomly selected adults, 66% said that they worry about identity theft. For a group of 1013 adults, the mea

Kazeer [188]

Answer:

$Mean = 344$

Step-by-step explanation:

Given

$Population = 1013$

Let p represents the proportion of those who worry about identity theft;

$p = 66\%$

Required

Mean of those who do not worry about identity theft

First, the proportion of those who do not worry, has to be calculated;

Represent this with q

In probability;

$p + q = 1$

Make q the subject of formula

$q = 1 - p$

Substitute $p = 66\%$

$q = 1 - 66\%$

Convert percentage to fraction

$q = 1 - 0.66$

$q = 0.34$

Now, the mean can be calculated using:

$Mean = nq$

Where n represents the population

$Mean = 1013 * 0.34$

$Mean = 344.42$

$Mean = 344$ (Approximated)

3 0

3 years ago

The set of points in space that are a given distance from a given point is called a(n) __________.

Marrrta [24]

The answer would be B. Edge

The set of points in space that are a given distance from a given point is called an Edge.

D would be incorrect since it doesn’t have any edges and is like a circle but is 3D. A cylinder is also incorrect since it has curves from top to bottom. C is also incorrect since it only shows one side, which is called the face. That leaves you with edge which would be the correct answer.

Hope this helps! :3

8 0

3 years ago