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3 years ago

This one is really confusing me

Mathematics

2 answers:

AleksandrR [38]3 years ago

3 0

Answer:

D) 9

Step-by-step explanation:

8 + 9 + 10 + 7 =39

48 - 39 = 9

kramer3 years ago

3 0

Answer:

Last option: 9

Step-by-step explanation:

48-8-9-5-10-7=9

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All my question are about math and this test determines my high school classes help if you can please

Mashcka [7]

Answer:

y = x+2

Step-by-step explanation:

When x = 0, y =2

So, y = 0 + m

2 = 0 + m

2 = m

When x = 1, y =3

y = x + m

3 = x + 2

-2 -2

1 = x

3 0

3 years ago

Subtract the following polynomials, then place the answer in the proper location on the grid.

Grace [21]

(3m - 4n - 7) - (8m + n - 6)

3m - 8m = - 5m
-4n - n = -5n
-7 - (-6) = -7 + 6 = -1

-5m - 5n - 1 is your answer

hope this helps

8 0

3 years ago

A hotel reservation number consist of 4 digits, followed by 1 letters, followed by 3 digits. How many different reservation numb

astraxan [27]

Answer:

24000000

(might not be correct)

Step-by-step explanation:

might not be right but ill try:

ten digits: 10

4times:10x10x10x10=10000

times a letter:24 letters= 10000x24=240000

time three digits: 10x10x10=100x240000=24000000

5 0

3 years ago

X^2+y^2+14x+10y=7 center and radius

Sholpan [36]

$(x-a)^2+(y-b)^2=r^2\\\\(a;\ b)-the\ coordinates\ of\ the\ center\\r-the\ radius\\\\==================================\\Use:(k+l)^2=k^2+2kl+l^2\ (*)\\==================================$

$x^2+y^2+14x+10y=7\\\\x^2+14x+y^2+10y=7\\\\x^2+2x\cdot7+y^2+2y\cdot5=7\\\\\underbrace{x^2+2x\cdot7+7^2}_{Use\ (*)}-7^2+\underbrace{y^2+2y\cdot5+5^2}_{Use\ (*)}-5^2=7\\\\(x+7)^2-49+(y+5)^2-25=7\\\\(x+7)^2+(y+5)^2-74=7\ \ \ \ |add\ 74\ to\both\ sides\\\\(x+7)^2+(y+5)^2=81\\\\(x+7)^2+(y+5)^2=9^2$

$Answer:\\\boxed{(-7;-5)-center;\ 9-radius}$

8 0

3 years ago

Read 2 more answers

A factor is undefined when the denominator is 1 2 0 None of th

zubka84 [21]

Answer:

Step-by-step explanation:

denominearar this hard

7 0

3 years ago