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4 years ago

Can someone teach me how to solve this please

Mathematics

2 answers:

Lapatulllka [165]4 years ago

4 0

With this problem you just look at the graph and answer it that way. Look at where the heart rate is at its max and then look at the beginning and end, the shape of the graph. Then answer the question.

Andrei [34K]4 years ago

3 0

It would be the first, third, and fifth options. I hope this Helps!

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Simplify 1/x-3+4/x divided by 4/x-1/x-3

Alchen [17]

The answer is $\frac{5x-12}{3x-12}$

The expression is: $\frac{ \frac{1}{x-3}+ \frac{4}{x} }{ \frac{4}{x} - \frac{1}{x-3} }$

Let's factorize it:
$\frac{ \frac{1}{x-3}+ \frac{4}{x} }{ \frac{4}{x} - \frac{1}{x-3} } = \frac{ \frac{x*1}{x(x-3)}+ \frac{4*(x-3)}{(x-3)*x}}{ \frac{(x-3)*4}{(x-3)*x}- \frac{x*1}{x*(x-3)}}= \frac{ \frac{x+4(x-3)}{x(x-3)} }{ \frac{4(x-3)-x}{x(x-3)} }$

Since $\frac{ \frac{a}{b} }{ \frac{c}{d} }= \frac{a}{b}/ \frac{c}{d}= \frac{a*d}{b*c}$ , then:
$\frac{ \frac{x+4(x-3)}{x(x-3)} }{ \frac{4(x-3)-x}{x(x-3)} }= \frac{(x+4(x-3))*x(x-3)}{(4(x-3)-x)*x(x-3)}$

Cancel x(x-3) and simplify:
$\frac{(x+4(x-3))*x(x-3)}{(4(x-3)-x)*x(x-3)} = \frac{x+4(x-3)}{4(x-3)-x} = \frac{x+4x-12}{4x-12 -x} = \frac{5x-12}{3x-12}$

4 0

3 years ago

Let U be the universal set, where U=(1,2,3,4,5,6,7,8,9)let sets A and B. be subsets of U, whereA=(2,3,8,9) and B=(1,2,3,5)

Black_prince [1.1K]

(A U B) = {1, 2, 3, 5, 8, 9}

(A U B)^c = {4, 6, 7}

A^c = {1, 4, 5, 6, 7 }

B^c = {4, 6, 7, 8, 9}

A^c ∩ B^c = {4, 6, 7}

8 + 3(4 + 5)

8 + 3(9)

8 + 27 = 35

6 0

2 years ago

Express 0.495 in standard form

azamat

Answer:

4.95 x 10^-1

Step-by-step explanation:

4.95 x 10^-1

3 0

3 years ago

Read 2 more answers

Solve this expression (1/6-3)+(3q-1.7)+(-1/3p+4)

QveST [7]

Step-by-step explanation:

Let's simplify step-by-step.

16−3+3q−1.7+−13p+4

=16+−3+3q+−1.7+−13p+4

Combine Like Terms:

=16+−3+3q+−1.7+−13p+4

=(−13p)+(3q)+(16+−3+−1.7+4)

=−13p+3q+−0.533333

Answer:

=−13p+3q−0.533333

6 0

3 years ago

Find the area of the figure!!! Pleaseee don’t give a big explain Atom i have exactly 17 minutes to get to 90 on ixl!

prohojiy [21]

Answer:

137 m²

Formula's:

area of rectangle: length + width

area of triangle: 1/2 * base * height

Explanation:

⇒ area of rec + area of rec + area of rec + area of triangle

⇒ 2 * 4 + 7 * 6 + 8 * 9 + 1/2 * 6 * 5

⇒ 8 + 42 + 72 + 15

⇒ 137 m²

3 0

3 years ago

Read 2 more answers