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3 years ago

Debra can run two and a half miles into 1/4 hour how many miles per hour can she run

Mathematics

2 answers:

larisa [96]3 years ago

7 0

Debra can run 10 miles per hour

Debora [2.8K]3 years ago

7 0

Answer:

Debra can run 10 miles per hour

Step-by-step explanation:

2.5 times 4 = 10

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To solve y and x, I am adding a picture

Viktor [21]

Answer:

$x =\sqrt 5$

$y = \sqrt{5$

Step-by-step explanation:

Given

The attached triangle

Required

Solve for x

Considering angle 45 degrees, we have:

$\cos(45) = \frac{y}{\sqrt{10}}$ --- cosine formula i.e. adj/hyp

Solve for y

$y = \sqrt{10} * \cos(45)$

In radical form, we have:

$y = \sqrt{10} * \frac{1}{\sqrt 2}$

$y = \sqrt{10/2}$

$y = \sqrt{5$

To solve for x, we make use of Pythagoras theorem

$x^2 + y^2 = (\sqrt{10})^2$

$x^2 + y^2 =10$

Substitute for y

$x^2 + (\sqrt 5)^2 =10$

$x^2 + 5 =10$

Collect like terms

$x^2 =10-5$

$x^2= 5$

Solve for x

$x =\sqrt 5$

4 0

3 years ago

Please help me out!!!!!

notka56 [123]

Answer: D

Step-by-step explanation:

all possible rational zeros are the factors of the last term divided by the coefficient of the first term

so it's (±1, ±3, ±9) / (±1, ±2)

(±1, ±3, ±9) / ±1 = ±1, ±3, ±9

(±1, ±3, ±9) / ±2 = ±1/2, ±3/2, ±9/2

--> ±1, ±3, ±9, ±1/2, ±3/2, ±9/2

8 0

3 years ago

Hep I’ll give brainliest

PilotLPTM [1.2K]

Use this to help you.

6 0

3 years ago

Read 2 more answers

What is 35÷ into 7,140

sveta [45]

the answer to 35 divided by 7,140=490196078

5 0

3 years ago

Read 2 more answers

Let A= {a,b,c,d,e} and let B= {1,2,3,4,5} determine n(AxB)

777dan777 [17]

n(AxB) = 25

Step-by-step explanation:

AxB in sets is called Cartesian product. And is defined as a set of ordered pairs (a,b) where a belongs to A and b belongs to B.

Given

A = {a,b,c,d,e}

B = {1,2,3,4,5}

The number of elements for Cartesian product of two sets is determined by:

$n(AxB) = n(A) * n(B)$

Here

$n(A) = 5\\n(B) = 5$

So,

$n(AxB) = 5*5 = 25$

Hence,

n(AxB) = 25

Keywords: Sets, Cartesian Product

Learn more about sets at:

#LearnwithBrainly

7 0

2 years ago

Debra can run two and a half miles into 1/4 hour how many miles per hour can she run ​

Debra can run two and a half miles into 1/4 hour how many miles per hour can she run