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Black_prince [1.1K]
3 years ago
6

Helpppp plsssss someone !!!!!

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
5 0
The answer is b I really. Don’t know don’t trust me
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Randy has to pick two people to work with out of 15. How many different groups can he pick?
Novosadov [1.4K]
He can only pick 7 different groups because 2 times 7 is 14, and there are 15 people in all.

Hope this helps. c:
5 0
3 years ago
Read 2 more answers
What does y equal? ​
tensa zangetsu [6.8K]

Answer:

y=-4x+17

Step-by-step explanation:

\begin{pmatrix}4&1\end{pmatrix}\quad \mathrm{and}\quad \begin{pmatrix}2&9\end{pmatrix}

\mathrm{Computing\:dot\:product\:of\:two\:vectors}:\quad \left(x_1,\:\:\ldots ,\:\:x_n\right)\cdot \left(y,\:\:\ldots ,\:\:y_n\right)=\sum _{i=1}^nx_iy_i

=4\cdot \:2+1\cdot \:9

=17

5 0
2 years ago
How do you find the total sum of squared values?
tester [92]

Answer:

Step-by-step explanation:

\sum^{12}_{r=1} r^2 = \frac{12(12+1)(2*12+1)}{6}= A

\sum_{r=3}^{12}= \sum_{r=1}^{12} - (r_1+r_2)

r_1= 1^2

r_2= 2^2

you do your math!!

7 0
2 years ago
Will give BRAINLIEST!!!! Answer fast!!! If a + b + c =−2 and x + y = 10, what is -9a + 2x - 9b - 9c + 2y?
riadik2000 [5.3K]
A^5b^3 is your answer

 
5 0
3 years ago
t When you reverse the digitals in a certain number you increase its value by 27. Find the number if the sum fixes digits is 9.
TiliK225 [7]
The number=10x+y
we suggest this system of equations:
(10y+x)-(10x+y)=27
x+y=9                                ⇒x=9-y

Can solve this system of equations by susbstitution method.
(10y+(9-y)-(10(9-y)+y)=27
10y+9-y-(90-10y+y)=27
10y-y+10y-y=27-9+90
18y=108
y=108/18
y=6

x=9-y
x=9-6
x=3

The number=10x+y=10(3)+6=36

Answer: the number is 36.

to check:
63-36=27
6+3=9
3 0
3 years ago
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