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olga2289 [7]
4 years ago
14

HELP PLEASE ASAP GIVE ANSWER AND EXPLANATION PLEASEEE

Mathematics
1 answer:
MrRissso [65]4 years ago
4 0

Answer:

There are 24 boys and 4 teachers.

Step-by-step explanation:

To get 18, you multiply 3 by 6. To get 24, you multiply 4 by 6.

You add 18 and 24 together to get 42, which is double 21 and there are 2 teachers for every 21 students

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I need help 1-3 please help I’ll give brainliest
8_murik_8 [283]
1. To represent a function all inputs need to only have ONE output. The inputs are the x values and the outputs are the y values. So, your answer would be all of the except the last 3.
6 0
3 years ago
John makes 498 thousand a year Joan makes 2 months more pay than John how much does Joan make
goldenfox [79]

Answer:

I think it is 996 I'm not sure

Step-by-step explanation:

498x2=996

3 0
4 years ago
Read 2 more answers
Please help!!!
Nonamiya [84]

Answer:

c. 2a^3x^4-3a^3x^3+a^4x^2

d. 63x^5y^3-30x^2y^4-7x^3y^2

Step-by-step explanation:

For this exercise you need to remember the following:

 1. The multiplication of signs:

(+)(+)=+\\(-)(-)=+\\(-)(+)=-

2. The Product of powers property, which states that:

(a^m)(a^n)=a^{(m+n)}

3. The Distributive property:

a(b\±c)=ab\±ac

Knowing that, you can solve the multiplication of the polynomials:

c. (-2ax^2+3ax-a^2)(-a^2x^2)=\\\\=(-2ax^2)(-a^2x^2)+(3ax)(-a^2x^2)+(-a^2)(-a^2x^2)=2a^3x^4-3a^3x^3+a^4x^2

d. (6.3x^3y-3y^2-0.7x)(10x^2y^2)=\\\\=(6.3x^3y)(10x^2y^2)+(-3y^2)(10x^2y^2)+(-0.7x)(10x^2y^2)=63x^5y^3-30x^2y^4-7x^3y^2

8 0
3 years ago
Circle L is shown. Line segments K L and M L are radii. The length of K L is 12. Angle M L K is 60 degrees. Sector M L K with a
sergejj [24]

Answer:

120\pi square units

Step-by-step explanation:

We are given that

Radius of circle=12 units

Angle MLK=60 degree

We have to find the area of sector that is not shaded.

Area of shaded sector MLK=\frac{\theta}{360}\times \pi r^2

Area of shaded sector MLK=\frac{60}{360}\times \pi(12)^2=24 square units

Area of whole circle=\pi r^2=\pi (12)^2=144\pisquare units

Area of sector that is not shaded =Area of whole circle-Area of shaded sector MLK=144\pi-24\pi

Area of sector that is not shaded=120\pi square units

4 0
3 years ago
Read 2 more answers
Mariah will deposit $1,530 in an account that earns 6% simple interest every year. Her
Vera_Pavlovna [14]

Answer:

After 3 years Mariah will have $1,805.40 while her sister Isabel will have $1,889.56.

Step-by-step explanation:

Since Mariah will deposit $ 1,530 in an account that earns 6% simple interest every year, while her sister Isabel will deposit $ 1,500 in an account that earns 8% interest compounded annually, and the deposits will be made on the same day, and no additional money will be deposited or withdrawn from the accounts, to determine the balances of Mariah's account and Isabel account at the end of the 3 years the following calculations must be performed:

Mariah:

1,530 + ((1,530 x 0.06) x 3) = X

1,530 + (91.8 x 3) = X

1,530 + 275.4 = X

1,805.4 = X

Isabel:

1,500 x (1 + 0.08 / 1) ^ 3x1 = X

1,500 x 1.08 ^ 3 = X

1,500 x 1,259712 = X

1,889.568 = X

Therefore, after 3 years Mariah will have $ 1,805.40 while her sister Isabel will have $ 1,889.56.

3 0
3 years ago
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