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3 years ago

(-5x-4)-(-2-5x); x=3

Mathematics

1 answer:

Anettt [7]3 years ago

8 0

Answer:

Step-by-step explanation:

-5(3)-4=-19

-2-5(3)= -17

(-19)-(-17)= 2

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Find the equation of the line passing through (0,5) with a slope of 2/3

Vinvika [58]

Answer:

y= 2/3x +5

Step-by-step explanation:

(0,5) is the y intercept and the slope is 2/3 so we can use the y intercept form

y = mx+b where m is the slope and b is the y intercept

y= 2/3x +5

3 0

3 years ago

Read 2 more answers

Write an expression <br>the quantity of 7+x, squared

Ray Of Light [21]

Answer:

$\huge \boxed{(x+7)^2 }$

Step-by-step explanation:

The quantity x + 7 is squared.

$(x+7)^2$

Expand the brackets and simplify the expression.

$(x+7)(x+7)$

$x(x+7)+7(x+7)$

$x^2 +7x+7x+49$

$x^2 +14x+49$

We can leave the expression in factored form.

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3 years ago

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The radius of the base of a cylinder is decreasing at a rate of 121212 kilometers per second. The height of the cylinder is fixe

WARRIOR [948]

Answer:

7536 $km^3/sec$

Step-by-step explanation:

Given that:

Rate of decreasing of radius = 12 km/sec

Height of cylinder is fixed at = 2.5 km

Radius of cylinder = 40 km

To find:

The rate of change of Volume of the cylinder?

Solution:

First of all, let us have a look at the formula for volume of a cylinder.

$Volume = \pi r^2h$

Where $r$ is the radius and

$h$ is the height of cylinder.

As per question statement:

$r$ = 40 km (variable)

$h$ = 2.5 (constant)

$\dfrac{dV}{dt} = \dfrac{d}{dt}\pi r^2h$

As $\pi, h$ are constant:

$\dfrac{dV}{dt} = \pi h\dfrac{d}{dt} r^2\\\Rightarrow \dfrac{dV}{dt} = \pi h\times 2 r\dfrac{dr}{dt} \\$Putting the values:$\\\Rigghtarrow\dfrac{dV}{dt} = 3.14 \times 2.5\times 2 \times 40\times 12 \\\Rigghtarrow\dfrac{dV}{dt} = 7536\ km^3/sec$

4 0

3 years ago

A recipe calls for their ratio of sugar to flower to be 10.3. If you use 70 ounces of sugar how many ounces of flour would you n

bulgar [2K]

This means that for every 10 of whatever measurement of sugar there will be 3 of that measurement of flour

70 oz of sugar / 10 = 7

3 (ratio of flour) times 7 = 21

6 0

3 years ago

Help me please with an explanation/work, thank you!!

kiruha [24]

Answer:

1. 3

Step-by-step explanation:

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3 years ago