Which expression is equivalent to 12x – 20 – 5(x – 3)

Answer:

[tex]\displaystyle 9[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Step-by-step explanation:

Step 1: Define

[tex]\displaystyle 8 + (7 + 1)^2 \div 4 \cdot (\frac{1}{2})^4[/tex]

Step 2: Evaluate

Answer:

25

Step-by-step explanation:

22-6=16

16+9+25

Answer:

Step-by-step explanation:

2193.67

10%=219.367

5%=109.6835

1%=21.9367

21.9367 +21.9367 +21.9367 +109.6835 +219.367=394.8606

394.87 rounded to 2dp

Answer: hi want to be fwends

Step-by-step explanation:

There can 3 songs to be played for per quarter.

A unit conversion expresses the same property as a different unit of measurement.

Given that, It cost Sean 3.75 to play 45 songs on an old jukebox. The jukebox only accepts quarters.

Converting $3.75 into quarters,  ($1 = 4 quarters)

$3.75 = 3+0.75

= 3x4+0.75

= 12+3

= 15 quarters

So, he played 45 songs in 15 quarters

Therefore, in 1 quarters = 45/15

= 3

Hence, There can 3 songs to be played for per quarter.

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Answer:

399.8 feet

Step-by-step explanation:

Since the angle of elevation of the top of the tower from the building is Ф = 37°, and the distance between the tower and the building is x = 275 feet. Let the upper part of the tower be h. These three components from a right-angled triangle with opposite side = h and adjacent side = x. So, by trigonometric ratios,

tanФ = h/x

h = xtanФ

= 275 feet × tan37°

= 275 feet × 0.7536

= 207.23 feet

Also, the angle of depression of the bottom of the tower from the building is Ф' = 35°, and the distance between the tower and the building is x = 275 feet. Let the lower part of the tower be h'. These three components from a right-angled triangle with opposite side = h' and adjacent side = x. So, by trigonometric ratios,

tanФ' = h'/x

h' = xtanФ'

= 275 feet × tan35°

= 275 feet × 0.7002

= 192.56 feet

So, the height of the tower, H = h + h'

= 207.23 feet + 192.56 feet

= 399.79 feet

≅ 399.8 feet

Answer:

B

Step-by-step explanation:

Answer:

its B I TOOK TEST

Step-by-step explanation:

Answer:

-2+2x

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

yes because the large bottle has 42ml more than the small bottle

Step-by-step explanation:

Given

Total spending =$230

The cost of the skirt  is $15

The Cost of the shirt  is $10

Suppose she buys x skirts and y shirts

So, sum of the spending on skirts and shirts must be less than or equal to the $230

[tex]15x+10y\leq230[/tex]

Answer:

y = 68 degrees

Step-by-step explanation:

Here, we want to solve for an equilateral triangle with the internal angle measurement being y-8

If one of the angles is y-8, then the rest are y-8 too

mathematically, by adding all , we have a total of 180

Thus;

3(y-8) = 180

y-8 = 180/3

y-8 = 60

y = 60+8

y = 68 degrees

Answer:

She reads 5 books per month! :)

Step-by-step explanation:

10 divided by 2 is 5

Hope you do Great!!

Answer:

3 1/13 hours

Step-by-step explanation:

hope it helps

Answer:

Step-by-step explanation:

4. D. 4

5. D. 10a + 10

6. 11 and 71

7.  27.5 and 39.25

Answer:

115 degrees

Step-by-step explanation:

The third angle will measure 115° so option (A) will be correct.

The three-sided shape known as a triangle is sometimes used to allude to it. Every triangle has three sides and three angles, some of which might be the same.

The sum of all three angles inside a triangle will be 180° and the area of a triangle is given as (1/2) × base × height.

Sum of all three internal angles of the triangle = 180°

Sum of two angles + third angle = 180°

Given that,

Two angles of a triangle add up to 65° so

65° + third angle = 180°

Third angle = 180 - 65°

Third angle = 112°

Hence the third angle will be 112° measure.

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Answer:

-11, -10, -9, -8, -7, -6 and -5

Step-by-step explanation:

Given the inequality expressions

2x+9<0  and x>-12

2x+9<0

2x< 0-9

2x < -9

x < -9/2

x < -4.5

Since x >-12

-12 < x

Combining both inequalities

-12 <x  < 4.5

The integers between the intervals are -11, -10, -9, -8, -7, -6 and -5

Answer:  So  Reina and Sam are multiplying (84)5 (73)9 and their work are (84)5 (73)9 = 84 + 573 + 9 = 89712 Reina's (84)5 (73)9 = 84-573-9 = 820727

So Sam's Actually they are doing or multiplying using exponents. Reina's work (8*)s(7³)º=8*+5+ 73+9= 8° 712 This is incorrect because she added exponents instead of multiplying exponents Sams work (8*)5 (7³)º=84x5 73x9= 820 727 This is correct because Sam multiplied exponents correctly Exponents are multiplied not added.

Step-by-step explanation: Have a blessed  day and hope this helps.

My reasoning is in there. I calculated I hope that is helps a lot. god bless you

Answer:

Step-by-step explanation:

Answer:

Its gonna equal itself which is 14n^4

Step-by-step explanation:

14n4

=14*n4

=14*(n*n*n*n)

=14n4

Answer:

5,2

Step-by-step explanation:

Here, we want to find the point that is a solution to the system of inequalities

From what we have, the points that lie in the dark brown patch represent the solution to the system

Hence the coordinates lying in these parts are the solution to the system

An example of such coordinates is the point (5,2)

Answer:

dhjshsjshshhshsgsgsgsggdd

Answer: $18.19

Step-by-step explanation:

The tax is applied after the discount so first find the discounted price:

= Price * ( 1 - discount rate)

= 20 * ( 1 - 15%)

= $17

The sales tax of 7% can then be applied:

= Price * ( 1 + tax rate)

= 17 * ( 1 + 7%)

= $18.19

Answer:

The mean temperature for the first 8 days in January is 5.375 °C

Step-by-step explanation:

The means = The sum ÷ The number

∵ The mean temperature for the first 7 days in January was 5 °C

∴ The mean = 5

∴ The number = 7

→ Substitute them in the rule above

∵ 5 = The sum ÷ 7

→ Multiply both sides by 7

∴ 35 = The sum

∴ The sum of the temperature for the first 7 days is 35 °C

∵ The temperature on the 8th day was 8 °C

→ Add it to the sum of the first 7 days to find the sum of the first 8 days

∴ The sum of the first 8 days = 35 + 8

∴ The sum of the first 8 days = 43 °C

∵ The number of days = 8

→ Substitute them in the rule above to find the mean

∴ The mean = 43 ÷ 8

∴ The mean = 5.375 °C

∴ The mean temperature for the first 8 days in January is 5.375 °C

Answer:

C) 4.0 ft  

Step-by-step explanation:

We will use the Pythagorean theorem to solve this.  It states that the sum of the squares of the legs of a right triangle is equal to the square of the hypotenuse; algebraically,

a²+b² = c²

The height splits the base in two, giving us a leg of 3.  The hypotenuse is 5.  This gives us:

3²+b² = 5²

9+b² = 25

Subtract 9 from each side:

9+b²-9 = 25-9

b² = 16

Take the square root of each side:

√b² = √16 = 4

Answer:

3rd one y=2x

Step-by-step explanation:

because they are saying how many minutes can you read 2 pages so it would be 2 times x and x is the 4 minutes

Answer:

5 cans

Step-by-step explanation:

if each can is 2 dollars then you can divide that amongst 10 dollars to find that you can buy 5 cans

The number of cans you can buy for $2 is 5.

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value. Unitary method a technique by which we find the value of a single unit from the value of multiple devices and the value of more than one unit from the value of a single unit. It is a method that we use for most of the calculations in math.

We are given that You can buy one can of pineapple chunks for $2

We need to Find out how many can you buy with $10

Let x be the number of cans

Using proportion;

1/2 = x/10

x = 10/2

x =5

Hence, the answer is 5 cans.

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