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3 years ago

What is the inequaliity of 3<-5n+2n and how do you put it on a number line

Mathematics

2 answers:

Stels [109]3 years ago

8 0

3 < -5n + 2n

Simplify.

3 < -3n

Divide both sides by -3.

*Remember, when multiplying and dividing by negatives, you must change the sign.

-1 > n OR n<-1

~Hope I helped!~

timama [110]3 years ago

6 0

The inequality would be the negative factor, because -5n+2n is 3n. You would write it on a number line like this.....
Sry, i was just making an educated guess.... RIP....

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Suppose the measure of angle 1 is 127 degrees. Find the measure of the other 3 angles:

alukav5142 [94]

Answer:

Angle 1 is 127°

∠2 is 53°

∠3 is 127°

∠4 is 53°

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2 years ago

A small garden measures 9 ft by 13 ft. A uniform border around the garden increases the total area to 192 ft square. What is the

victus00 [196]

The width of border is 1.5 feet

<h3><u>Solution:</u></h3>

Given that small garden measures 9 ft by 13 ft

A uniform border around the garden increases the total area to 192 ft square

To find: width of border

Let the width of border be "x"

Then the new measures of garden are (9 + 2x) feet and (13 + 2x) feet

The total area of garden = 192 square feet

$(9 + 2x)(13 + 2x) =192$

$117 + 18x + 26x + 4x^2 = 192\\\\4x^2 + 44x - 75 = 0$

<em><u>Let us solve the above equation by quadratic formula</u></em>

$\text {For a quadratic equation } a x^{2}+b x+c=0, \text { where } a \neq 0\\\\x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

Using the above formula,

For $4x^2 + 44x - 75 = 0$ , we have a = 4 ; b = 44 ; c = -75

Substituting the values of a = 4 ; b = 44 ; c = -75 in above quadratic formula we get,

$\begin{aligned}&x=\frac{-44 \pm \sqrt{44^{2}-4(4)(-75)}}{2 \times 4}\\\\&x=\frac{-44 \pm \sqrt{1936-1200}}{8}\\\\&x=\frac{-44 \pm \sqrt{3136}}{8}\\\\&x=\frac{-44 \pm 56}{8}\end{aligned}$

$\begin{aligned}&x=\frac{-44+56}{8} \text { or } x=\frac{-44-56}{8}\\\\&x=\frac{12}{8} \text { or } x=\frac{-100}{8}\\\\&x=1.5 \text { or } x=-12.5\end{aligned}$

Since "x" cannot be negative,

we get x = 1.5

Thus width of border is 1.5 feet

4 0

2 years ago

Figures ABCD and PQRS are parallelogram find x and y (lengths are in metres) Part i and ii.

STatiana [176]

Step-by-step explanation:

For 1st question

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5x = 16 + 4

5x = 20

x = 20 / 5

x = 4

3y + 1 = 22 (being opposite sides of parallelogram)

3y = 22 -1

3y = 21

y = 21 / 3

y = 7

For second question

In parm PQRS

Diagonals bisect each other so

x + 4 = 12

x = 12 - 4

x = 8

x + y = 32

8 + y = 32

y = 32 - 8

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Hope it will help :)❤

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2 years ago

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KengaRu [80]

Ab = 4c
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2 years ago

If Julie needs 3 and 1/4 cups of oatmeal how many 1/4 cups of oatmeal will she use

Effectus [21]

Answer:

She will use 13 quarter cups of oatmeal

Step-by-step explanation:

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x/4 = 13/4

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x = 13

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3 years ago