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

Answer:

x = 8

x = 10

Step-by-step explanation:

lx -9l + 7 = 8

lx - 9l + 7 - 7 = 8 - 7

lx - 9l = 1

Split into a positive and a negative case.

x - 9 = 1 and - (x - 9) = 1

Add nine to both sides

x - 9 + 9 = 1 + 9

x = 10

- (x - 9) = 1

Subtract 9 from both sides

- 8 = - x

Multiply both sides by negative 1

x = 8

Answer:

See below

Step-by-step explanation:

The result of the calculation of area ( L x W ) should have no more significant digits than the lowest factor ....in this case 75 has only TWO significant digits...... the naswer should have the same ...two

75 * 50.3 = ~3800 cm^2

Answer:

b.) -5/6

Step-by-step explanation:

m = -10/-12 = -5/-6

Answer:

√299=17.2916164658     √675= 25.9807621135

Step-by-step explanation:

Answer:

17.29 and 25.98

if you are rounding to the nearest whole number it would be 17 and 26

hope this helped :)

Step-by-step explanation:

The volume in cubic yards of concrete needed is 3.5 cubic yards

From the question, we are to calculate the volume of concrete needed

From the given information,

A new concrete courtyard will be 15' by 25'

That is,

15 feet by 25 feet

Also, from the given information,

The concrete will be filled to a depth of 3" (1/4 foot.)

That is, 0.25 foot

First, we will convert the measurements to yards

NOTE: 1 foot = 1/3 yards

Thus,

15 feet = 15/3 yards = 5 yards

25 feet = 25/3 yards

0.25 foot = 0.25/3 yard = 1/12 yards

Thus,

Volume of concrete needed = 5 × 25/3 × 1/12

Volume of concrete needed = 125/36

Volume of concrete needed = 3.472 cubic yards

Volume of concrete needed ≈ 3.5 cubic yards

Hence, the volume in cubic yards of concrete needed is 3.5 cubic yards

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Answer: y=9

Step-by-step explanation:

Answer:

8 it gigi

Step-by-step explanation:

8. this o y 8u9 I 7f8d

Answer:

0.75x - 3 = 0.40

Step-by-step explanation:

3/4 = 0.75, 2/5 = 0.40

Answer:

240

Step-by-step explanation:

Answer:

240 minutos.

Step-by-step explanation:

How many minutes are in 4 hours. Multiply 60 by 4. 60x4=240 minutes.

Answer:

(3x + 1)(x - 2) = 0

Step-by-step explanation:

move the 2 to the left to set the equation equal to 0

3x^2 - 5x - 2 = 0

factor out from here

(3x + 1)(x - 2) = 0

Answer:

C

Step-by-step explanation:

(x-3)=5

add 3 to 5= 8

another way is to do:

subtract -3 to 5 = -2

Answer:

x=8

Step-by-step explanation:

Answer:

1. 24

2. 24

3. -24

4. -24

I don`t know why some of the answers are 10, I think those are just trick ones. The answers are only in 24s

Answer:

the first one is 24

the second one is 24

the third one is -24

the fourth one is -24

Step-by-step explanation:

the first one is a positive because two negative multiplied by each other make a positive. the second one 6 times 4 is 24:). and the third and fourth one,when there is a positive and and a negative multiplied by each other it will always become a negative. HOPE THIS HELPS have a good one:)

Answer: c

Step-by-step explanation:

Answer:

I'm pretty sure it's B

Step-by-step explanation:

hope I helped

Answer:[tex]1.29 * 2.22 = 2.86[/tex]

$2.86

Step-by-step explanation:

First we need to find the price per pound for the cantaloupe

[tex]3.87/3.0=1.29[/tex]

So one pound of cantaloupe costs $1.29

Now multiply the price per pound by the weight of the second cantaloupe

[tex]1.29*2.22=2.86[/tex]

So the price for a cantaloupe that weighs 2.22 lbs would be $2.86

Answer:

Step-by-step explanation:

the greatest common factor between those numbers is 8

a=8

16+24=8(2+3)

Answer:

it is 4 feet deep

Step-by-step explanation:

Answer:

what are the graphs

Step-by-step explanation:

tell me the graphs

Performing LCM, the least number of pencils and pens that she needs to buy are 60 pencils and 60 pens.

LCM refers to the least common multiple. The LCM of two or more numbers is the one that can divide all the numbers by the single number itself.

Pencils come in packages of 20 and pens come in packages of 12.

So, the possible lowest common multiplier is LCM of 20 and 12, and it is 60.

So she has to buy 3 packages of pencils (60/20 = 3 ) as well 5 packages of pens ( 60/12 = 5 ).

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Answer:

Mortgage

Step-by-step explanation:

Answer:

2

Step-by-step explanation:

[tex]m= \frac{y2 - y1}{x2 - x1} [/tex]

put the values you will get your answer.

Answer:

£440

Step-by-step explanation:

10% of 2200 = 220

So, he gets 220 per year.

220 x 2 = 440

£440

Answer:

£440

Step-by-step explanation:

According to the question,

Daniel invests £2200 into his bank account and he receive 10% per year simple interest.

So, money he'll have after a year = 10% of 2200 = 220

Money he will have after two years = 220×2 = 440

So he will have £440 after two years

Answer:

a = -1

Step-by-step explanation:

-6(3a+4) = 3a-3

-18a-24 = 3a-3

-24+3 = 3a+18a

21a = -21

a = -21 ÷ 21

a = -1

Answer:

i think the first one. I hope it's right. Good luck!

Step-by-step explanation:

Answer:

2x=6

Step-by-step explanation:

The probability that a person who tests positive is infected is 0.0843.

Suppose the incident rate of a certain disease is 0.1 %.

The false negative rate is 8 % and the false positive rate is 1 %.

For a population of 100,00

There are 0.1 % infected = 100,00 × 0.1 % = 100

The population that is not infected is:

= 100,000 - 100 = 99900

The false negative rate is 8%, so the positive rate is 100 = 8 = 92%.

The population that is infected and has a positive result is:

= 100 × 0.92 = 92

The false positive rate is 1%.

The population that is not infected but has a positive result is:

= 99900 × 0.01 = 999

Therefore, the total positive results are:

= 92 + 999 = 1091

Therefore, the probability that a person who tests positive actually is infected is:

P ( infected / positive) = 92 / 1091 = 0.0843

Hence, the probability that a person who tests positive is infected is 0.0843.

Learn more about probability here:

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Answer:

55-45=10 it's 10$ discount

[tex]\frac{10}{55}*100=18.19\%[/tex]

Step-by-step explanation: