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3 years ago

Please help TRUE FRIENDS

Mathematics

2 answers:

labwork [276]3 years ago

7 0

Answer:

B. (-3.5, -2.5)

Step-by-step explanation:

solmaris [256]3 years ago

7 0

Answer:
B (- 3,5 , - 2,5 )

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Marcos reads 3, books in 1 3/4 weeks.

Fofino [41]

Answer:

$x = \frac{12}{7}\ books$

Step-by-step explanation:

Given

$3\ books = 1\frac{3}{4}\ weeks$

Required

Number of books in 1 week

Represent the number of books in 1 week with x.

So, we have:

$3\ books = 1\frac{3}{4}\ weeks$

$x = 1\ week$

Cross Multiply

$x * 1\frac{3}{4} = 3 * 1$

$x * 1\frac{3}{4} = 3$

Convert fraction to improper fraction

$x * \frac{7}{4} = 3$

Multiply through by $\frac{4}{7}$

$x * \frac{7}{4}*\frac{4}{7} = 3 * \frac{4}{7}$

$x = 3 * \frac{4}{7}$

$x = \frac{12}{7}\ books$

Hence: 12/7 books were read in a week

7 0

3 years ago

Arianna runs up 4 flights of stairs and then runs down 4 flights of stairs.

Cloud [144]

Answer:

Yes this represents additive inverse,

Step-by-step explanation:

Since you are subtracting the same number 4 to get to zero.

5 0

3 years ago

Each side of a square is increasing at a rate of 6 cm/s. At what rate (in cm2/s) is the area of the square increasing when the a

My name is Ann [436]

36 cm²s⁻¹ is the rate at which the area of the square is increasing.

Given each side of the square is increasing at a rate of 6cm/s

Area, A = s², s is the side length

=> $\frac{dA}{dt} =\frac{dA}{ds}* \frac{ds}{dt} =2s*(\frac{ds}{dt} )$ {chain rule of differentiation}

$\frac{ds}{dt}$ = 6 cm/s

When A = 9 cm² => 9 = s²

=> s = √(9) => s = 3 cm

Hence, $\frac{dA}{dt}$ = 2 × 3 × 6 = 36 cm²s⁻¹

Hence, 36 cm²s⁻¹ is the rate at which the area of the square increases

Learn more about differentiation here brainly.com/question/3083587

#SPJ4

6 0

2 years ago

PLZ HELP!!!!!!!!!!!!!

Rasek [7]

Answer:

Move the decimal point 3 times to the left.

Step-by-step explanation:

6 0

3 years ago

What is the slope of the line that passes through the points (3,-2) and (9,-2)? 0 3 -3 undefined

SVETLANKA909090 [29]

Answer:

$\boxed{\textsf{ The slope of the line is $\bf{\dfrac{3}{2}}$.}}$

Step-by-step explanation:

Two points are given to us and we need to find the slope of the line that passes through these two points . The two points are (3,-2) and (9,-2) .As we know that the slope of the line is given by $\tan\theta$

Slope of a line is :-

$\qquad\boxed{\boxed{ \sf Slope =\dfrac{ y_2-y_1}{x_2-x_1}=\tan\theta }}$

On using this formula we can find the slope of the line .

Putting the respective values :-

$\sf\implies Slope = \dfrac{y_2-y_1}{x_2-x_1}\\\\\sf\implies Slope = \dfrac{ 9-3}{2+2} \\\\\sf\implies Slope =\dfrac{6}{4}\\\\\sf\implies\boxed{\pink{\sf Slope = \dfrac{3}{2} }}$

4 0

3 years ago

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