evaluate the following expression:

21 - ( 11 - 7 ) ² + 12

will give brainliest to whoever is right!!

Answer:

x = 12

Step-by-step explanation:

a² + b² = c²

16² + x² = 20²

256 + x² = 400

x² = 144

x = 12

Answer:

Step-by-step explanation:

Fourth row is least accurate.

Answer:

3/1=3

slope is 3

Step-by-step explanation:

Perpendicular lines have slopes that are the opposite of the reciprocal of each other.

Answer:

b

Step-by-step explanation:

Answer:

23

Step-by-step explanation:

2x-7=39

2x=46

x=23

Answer:

−45−1+3−63−6

−46−1+3−63−6

−46+2−63−6

Solution:

−46−63−6+2

Step-by-step explanation:

I hope that this is what you are looking for

Have a nice day/night

Answer:

B x 0.16 = T

If the bill is $ 145, the tip will be $ 23.2.

Step-by-step explanation:

Since Jack’s BBQ has a policy of adding a 16% tip if there is a party of 8 or more, to write an equation to represent the relationship between tip (t) and the bill (b), the following reasoning must be performed:

B x 0.16 = T

B is the value of the bill after consumption.

In turn, to determine how much the tip would be if the bill is $ 145, the following calculation must be performed:

145 x 0.16 = T

23.2 = T

Thus, if the bill is $ 145, the tip will be $ 23.2.

Answer:

The correct answer is: Find half the difference of 14 and 6, multiply by 6, then add 4.

Step-by-step explanation:

By Hierarchy Rules of Operators, we must follow these steps:

(i) Subtract 6 from 14.

[tex]\frac{1}{2}\times 8\times 6 + 4[/tex]

(ii) Multiply the result in (i) by [tex]\frac{1}{2}[/tex] and 6.

[tex]24+4[/tex]

(ii) Add 4 to the result in (ii).

[tex]28[/tex]

Hence, the correct answer is: Find half the difference of 14 and 6, multiply by 6, then add 4.

Given:

A dealer made a profit of 25% by selling a car for a 1000 naira.

To find:

The cost price of the car​.

Solution:

Let x be the cost price of the car.

A dealer made a profit of 25% by selling a car. So, the selling price of the car is

[tex]S.P.=x+\dfrac{25}{100}x[/tex]

[tex]S.P.=x+0.25x[/tex]

[tex]S.P.=1.25x[/tex]

It is given that the selling price of the car is 1000. So,

[tex]1.25x=1000[/tex]

[tex]x=\dfrac{1000}{1.25}[/tex]

[tex]x=800[/tex]

Therefore, the cost price of the car​ is 800.

Answer:

16 days

Step-by-step explanation:

multiply 8 by 2 because he is eating 1 bag of chip over the course of 2 days

Answer:

in 16 days he will run out of chips

Answer:

n = 0

Step-by-step explanation:

n^2-8n+16=n^2+8n+16

16n=0

==> n = 0

Answer:

49

Step-by-step explanation:

Let  be the unknown number. Twice means times 2. So, the mathematical sentence should be .

Divide both sides by 2.

To remove the radical symbol, raise both sides to the second power.

Thus, the answer is 49. Twice the square root of 49 is equal to 14.

*CREDIT* goes to CebuMath: https://brainly.ph/question/1047782

HE SOLVED THIS NOT ME.

Answer:

0.78125g

Step-by-step explanation:

Since there are 35 days in 5 weeks, 7 half-lives of Bismuth-210 will take place. To solve for that, you can divide 100g by 2, 7 times or simply: [tex]\frac{100}{2^{7}}[/tex]

[tex]\frac{100}{2} =50\\\frac{50}{2} =25\\\frac{25}{2} =12.5\\\frac{12.5}{2} =6.25\\\frac{6.25}{2} =3.125\\\frac{3.125}{2} =1.5625\\\frac{1.5625}{2} =0.78125[/tex]

Answer:

27.5

Step-by-step explanation:

Radius is half the diameter of a circle so just divide 55 by 2.

Answer:

27.5

Step-by-step explanation:

55/2=27.5

Answer:

f(0) is approximately equal to 7.07

Step-by-step explanation:

All you need to do here is substitute a zero wherever you see an x in the equation, giving us:

[tex]f(0) = 2(0)^2 + 5\sqrt{0 + 2}\\f(0) = 5\sqrt{2} \\f(0) \approx 5 \times 1.414\\f(0) \approx 7.07[/tex]

Answer:

300

Step-by-step explanation:

400 - 35 - 65 = 300

100 seats being used, so 300 seats left unused

(Btw, do you happen to know of a certain Northeast Middle School at all?)

Answer:

2,206

Step-by-step explanation:

Answer:

The answer is D ...     4(x – 3)(2x + 5)

Step-by-step explanation:

just answered on edg.

Answer:

D

Step-by-step explanation:

2022

Answer:

Box Plot

Step-by-step explanation:

Median: 82

Minimum: 67

Maximum: 123

First quartile: 79

Third quartile: 89

Outlier: 123

Answer:

homogeneous Add to list Share. If a group of things are homogeneous, they're all the same or similar, like a room full of identically dressed Elvis impersonators.

Step-by-step explanation:

Answer:

2142

Step-by-step explanation:

The range is the difference between the biggest and smallest number so for this set it would be 3113-971=2142.

Answer:

(1) exponent, (2) base

Step-by-step explanation:

An exponent is a quantity that represents the power to which a given number is to be raised.

A base can be any whole number greater than 0.

Answer:

For Example:  Evaluate a2b for a = –2, b = 3, c = –4, and d = 4.

Step-by-step explanation:

To find my answer, I just plug in the given values, being careful to use parentheses, particularly around the "minus" signs. Especially when I'm just starting out, drawing the parentheses first may be helpful:

a2 b

(    )2 (  )

(–2)2 (3)

(4)(3)

12

Note how using parentheses helped me keep track of the "minus" sign on the value of a. This was important, because I might otherwise have squared only the 2, ending up with –4, which would have been wrong.

By the way, it turned out that we didn't need the values for the variables c and d. When you're given a big set of expressions to evaluate, you should expect that there will often be one or another of the variables that won't be included in any particular exercise in the set.

Evaluate a – cd for a = –2, b = 3, c = –4, and d = 4.

In this exercise, they've given me extra information. There is no b in the expression they want me to evaluate, so I can ignore this value in my working:

(–2) – (–4)(4)

–2 – (–16)

–2 + 16

16 – 2

14

Answer:

-24+13x

Step-by-step explanation:

Answer:

the correct option is

C. m<1 + m<2 = 90

Hope it will help :)❤

Answer:

This is your answer ☺️☺️☺️