All categories

2 years ago

Michael is using a number line to evaluate the expression –8 – 3.

Mathematics

2 answers:

suter [353]2 years ago

7 0

Answer:

-5

Step-by-step explanation: -5 because when you have a negitive and subtrace it turns to a positive so 8-3 is 5 then add your negitive back as -5.

Yanka [14]2 years ago

6 0

Answer:

Step-by-step explanation:

Michael is using a number line to evaluate the expression -8 - 3. After locating -8 on the number line , Michael could rewrite the expression as -8 + -3 and move 3 spaces to the left.

You might be interested in

Whats 4 divided by 631

denis23 [38]

Answer:

The answer of 631 divided by 4 is 157. 75

8 0

2 years ago

Read 2 more answers

When asked to write a point slope equation for a line passing through the points (-4,-7) and (3,2) a student wrote y-2=-9/7(x-3)

AleksAgata [21]

First let's find the slope
Slope formula:
$\frac{y_2-y_1}{x_2-x_1} =slope$
Given the two coordinates:
(-4,-7) (3,2)
x1,y1 x2,y2

Plug these numbers into the formula
$\frac{2-(-7)}{3-(-4)} = \frac{9}{7}$
In this case the mistake that was made was that the student wrote the slope negative instead of positive
Final answer:
<span>y-2=9/7(x-3)</span>

8 0

2 years ago

A vertical cylinder is leaking water at a rate of 4m3/sec. If the cylinder has a height of 10m and a radius of 2m, at what rate

Katyanochek1 [597]

Answer:

Therefore the rate change of height is $\frac{1}{\pi}$ m/s.

Step-by-step explanation:

Given that a vertical cylinder is leaking water at rate of 4 m³/s.

It means the rate change of volume is 4 m³/s.

$\frac{dV}{dt}=4 \ m^3/s$

The radius of the cylinder remains constant with respect to time, but the height of the water label changes with respect to time.

The height of the cylinder be h(say).

The volume of a cylinder is $V=\pi r^2 h$

$=( \pi \times 2^2\times h)\ m^3$

$\therefore V= 4\pi h$

Differentiating with respect to t.

$\frac{dV}{dt}=4\pi \frac{dh}{dt}$

Putting the value $\frac{dV}{dt}$

$\Rightarrow 4\pi \frac{dh}{dt}=4$

$\Rightarrow \frac{dh}{dt}=\frac{4}{4\pi}$

$\Rightarrow \frac{dh}{dt}=\frac{1}{\pi}$

The rate change of height does not depend on the height.

Therefore the rate change of height is $\frac{1}{\pi}$ m/s.

4 0

2 years ago

Integers that satisfy the inequality -9 < x -3 < 1?

Leni [432]

Answer:

see explanation

Step-by-step explanation:

Given

- 9 < x - 3 < 1 ( add 3 to each interval )

- 6 < x < 4

Thus integer values which satisfy the inequality are

x = - 5, - 4, - 3, - 2, - 1, 0, 1, 2, 3

7 0

2 years ago

QUICK! EASY! 50 POINTS!

Paha777 [63]

Answer:

create a circle with the origin as its centre and a radius of the origin and point a then locate a point on a circle that is 90 degrees clockwise from point a.

Please mark me as brainliest and follow me.

4 0

2 years ago

Read 2 more answers