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JulijaS [17]
3 years ago
15

Answer these questions:

Mathematics
1 answer:
Setler [38]3 years ago
7 0
The answer is team A
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Determine if these matrices are inverses by calculating AB:
Phoenix [80]

Answer:

C11= 1

C12=0

C21=0

C22=1

Step-by-step explanation:

Just took the the assignment

5 0
3 years ago
Read 2 more answers
Someone please help me answer this
WARRIOR [948]

The given triangle is a <em><u>Right</u></em><em><u> </u></em><em><u>angled</u></em><em><u> </u></em><em><u>triangle</u></em><em><u> </u></em>

<em><u>So</u></em><em><u>,</u></em><em><u> </u></em>by applying<em><u> Pythagoras theorem</u></em> :

here's the solution,

=》

13 {}^{2}  = b {}^{2}  + 5 {}^{2}

=》

{b}^{2}  = 13 {}^{2}  -  {5}^{2}

=》

{b}^{2}  = 169 - 25

=》

{b}^{2}  = 144

=》

b =  \sqrt{144}

=》

b = 12

value of b = 12 yards

5 0
3 years ago
Which angle is an x–intercept for the function y= cos(/<br> x)
emmasim [6.3K]
For the function
y = cos(1/2 x)
The x-intercept can be calculated by equating the function to zero and solving for x. So,
y = cos(1/2 x) = 0
1/2 x = arc cos 0
1/2 x = 90° +180°n
x =2 (90° +180°n)
x = 180° + 360°n
or converting to radians
x = (180° + 360° n)(π/180°)
x = π + 2π n
where n is any whole number

if n = 0
x = π
6 0
3 years ago
The sum of 3 and a number is between -2 and 17.
kumpel [21]

Answer:

The number, x = { -5 < x < 14}

This means x is any integer between -5 and 14

Step-by-step explanation:

From the statement, let the number be x

3 + x = y; y = { -2 < y < 17}

This means that y is any integer between -2 and 17

Therefore, x = y - 3

Subtract 3 from the limits of y

i.e. -2 - 3 = -5 and 17 - 3 = 14

Hence, x = { -5 < x < 14}

4 0
3 years ago
john wants to buy a new bike that costs $337 and he already has saved $103. estimate to find about how much more john needs to s
Marrrta [24]
Estimation : 340 - 100 = 240
5 0
3 years ago
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