solve
-2(x + 2)(x - 1)​

Answer:

No Solutions

Step-by-step explanation:

First to complete the square, it will need to look something like

a^2+2ab+b^2

so in order to get that we can see that 4n^2+8n seems to be missing a piece.

a is the square root of 4n^2 which is 2n.

8n/2n=4

4/2=2

b=2

so now add 2 to both sides of the equation so now it's

4n^2+8n+4=-13

rewrite as (2n+2)^2=-13

Now you see a negative number as the result of a exponent.

A number squared will never be negative.

Therefore the answer is

No Solutions

Answer:

Step-by-step explanation:

The end solution has same volume as initial volumes of mixture.

The concentration of solution is calculated as below

Answer:

35 grams

Step-by-step explanation:

25+10=30 grams of the mixture

Answer:

Step-by-step explanation:

4

Answer:

Most of the time you can go on a website that can cauculate it.

Step-by-step explanation:

How to cauculate the MAD:

Take each number in the data set, subtract the mean, and take the absolute value. Then take the sum of the absolute values. Now compute the mean absolute deviation by dividing the sum above by the total number of values in the data set. Finally, round to the nearest tenth.

Answer:

6x4=24 as a fraction it could be 24/1 48/2 72/3 etc.

Step-by-step explanation:

Answer:

4, -4, 10

Step-by-step explanation:

on these types of questions you can take each seperate parenthesis and equate it to 0

for example:

x^2 - 16 = 0

hence,

x^2 = 16

x = 4 or -4

second parenthesis:

10 - x = 0

x = 10

make sure to ask if you need any further guidance :)

Answer:

choice B

Step-by-step explanation:

using the formula:

[tex]theta \div 360\pi \times r ^{2} [/tex]

Answer:

B

Step-by-step explanation:

Formula

[tex]\textsf{Area of a sector of a circle}=\left(\dfrac{\theta}{360^{\circ}}\right) \pi r^2[/tex]

Solution

Given:

[tex]\begin{aligned}\implies \textsf{Area} & =\left(\dfrac{60^{\circ}}{360^{\circ}}\right) \pi \cdot 9^2\\\\ & = \dfrac16 \cdot \pi \cdot81\\\\ & = \dfrac{81}{6} \pi\\\\ & = \dfrac{27}{2} \pi \: \sf cm^2\end{aligned}[/tex]

Answer:

The formula for area of a trapezoid is (b_{1} + b_{2})*\frac{1}{2} h=A(b

1

+b

2

)∗

2

1

h=A

b=base

h=height AKA altitude.

A=area.

Base 1 is 483.

Base 2 is 405.

483+405=888

888×320 (h) = 284160

284160 × \frac{1}{2}

2

1

= 142080

The approximate area of Nevada is 142080 square miles.

♡ Hope this helps! ♡

❀ Ishu ❀

please mark brainlist

The paragraph to show the comparision between two classes semester grades on the basis of the terms

is given below:

A box and whisker plot is defined as a graphical method of displaying variation in a set of data.

From the first figure, write all the values where dark point is drawn

53, 62, 80, 86, 89  

        The upper extreme is the highest value, which is 89.

        The upper quartile is 86 and the lower quartile is 62.

       = Highest - Lowest

       =89-53

       =36

From the second figure, write all the values where dark point is drawn

56, 62, 74, 89, 96

        The upper extreme is the highest value, which is 96.

       The upper quartile is 89 and the lower quartile is 62.

       = Highest - Lowest

       =96-62

       =34

From the above discussion,  

The comparision of the two classes on the basis of extremes, quartile, median, range is concluded above.

learn more about box and whisper plot here:

https://brainly.com/question/11859288

#SPJ1

Answer:

z=10

Step-by-step explanation:

We know that the ratio 7:21 is equal to the ratio of 10:3z.

Let's model that in proportions:

7               10

-       =        -

21             3z

Now that the equation is in proportional form, we can cross-multiply to find the value of z.

7 * 3z = 21 * 10 - Multiply both sides

21z = 210 - Divide both sides by 21

z=10

The answer is z=10.

Answer:

i believe the answer is 13,250

Step-by-step explanation:

all i did was divide the 5400/0.40 because i thiink its correct, maybe not

The employer contribute to her retirement plan is $2120.

Many American firms provide 401(k) plans, which are retirement savings plans with favourable tax treatment for the saver. It bears a section number from the United States Internal Revenue Code (IRC).

When a worker enrols in a 401(k), they consent to have a portion of each paycheck put directly into an investing account. A portion or the entire contribution may be matched by the employer. The employee has a variety of investing alternatives, most often mutual funds.

Given:

Jayne contributes $5,300

Now, the contribution of $0.40 for each dollar

So, employer contribute to her retirement plan

= 5300 x 0.40

= $2120

Hence, The employer contribute to her retirement plan is $2120.

Learn more about 401(K) plan here:

https://brainly.com/question/15875340

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Step-by-step explanation:

it needs 4×2 = 8 cubes asking the length, 5×2 = 10 cubes along the width, and 3 1/2 × 2 = 7 cubes along the height.

so, altogether

8×10×7 = 560 cubes

Answer:

Step-by-step explanation:

5 Digit Lock - Level One

*

242

Answer:

[tex]\sf \dfrac{2}{3} = \dfrac{32}{48} = \dfrac{30}{45}[/tex]

[tex]\sf \rightarrow \dfrac{2}{x} = \dfrac{32}{48}[/tex]

[tex]\sf \rightarrow 2(48)= {32x}[/tex]

[tex]\sf \rightarrow 32x= 96[/tex]

[tex]\sf \rightarrow x = 3[/tex]

[tex]\rightarrow \sf \dfrac{32}{48} = \dfrac{30}{y}[/tex]

[tex]\rightarrow \sf {32y} = 30(48)[/tex]

[tex]\rightarrow \sf {32y} = 1440[/tex]

[tex]\rightarrow \sf y = 45[/tex]

Answer:

16

Step-by-step explanation:

6.48 + 9.34= 15.82 so when u round the number it 16 so the estimate is 16.

Answer:

Since , we're given three distinct measures , we can make out that the dimensions are most probably of a cuboid.

[tex]Volume \: of \: cuboid = l \times b \times h \\ \\ \implies \: 8 \times 9 \times 3 \\ \\ \bold\red{\implies216 \: units^{3}}[/tex]

hope helpful ~

Answer:

14cm²

Step-by-step explanation:

Add up all the squares and the other bits to get the answer.

Hi!

Your answer is the 1st one, 36 inches of ribbon.

The question states this is a square picture frame. That means that all the side lengths are the same.

We are given a side length of 6 inches.

In order to find the area of a square, we multiply the length and the width together.

In this problem, the sides of the picture frame measure 6 inches. Therefore:

[tex]6*6=36[/tex]

For a similar problem, see:

https://brainly.com/question/26494746

Side of the Square picture frame= 6 inches

How much inches of ribbon she requires to cover the square frame.

There is a square picture frame. And we know Area of square= (side)²

[tex] \text{Area of Square picture frame = (side)²}[/tex]

[tex] = (6) {}^{2} \\ = 36 \: \: \text{inches of ribbon}[/tex]

[tex] \therefore \text{Option A= 36 inches of ribbon}[/tex]

Answer: A.) 0.9

Step-by-step explanation: hope this helps xlXCherryColaXlx. have a great day :3...(pls mark me brainliest)

Answer:

Line D

Step-by-step explanation:

Let's see how much points fall under each line's region

Majority of points lie under line D

Hence line D should be correct

Answer:

y = -1.25x + 3

OR
y = -1 1/4x + 3

OR

y = -5/4x + 3

Answer:

120 yards cubed

Step-by-step explanation:

brainliest please

Answer:

it is the domain

Step-by-step explanation:

because if you put 5x on the other side it will be a -5

-4x+11y=-50

[tex]x = \frac{25}{2} + \frac{11y}{4} [/tex]

The equations which define y as a function of x are; −12x−85y=0 and 3x−4y=−2.

Any number that one can think of, except complex numbers, is a real number. Real numbers therefore include rational numbers like positive and negative integers, fractions, and irrational numbers.

On this note, the equations as displayed in the answers provided above define y as a function of x.

Read more on straight line equations;

https://brainly.com/question/19380936

he should have covered 0.95-mile