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3 years ago

I NEED HELP PLEASE, THANKS! :)

Mathematics

2 answers:

Debora [2.8K]3 years ago

6 0

Answer: It would be the second one.

Step-by-step explanation:

Inverse means opposite.

blsea [12.9K]3 years ago

5 0

Answer:

Option D

Step-by-step explanation:

This is an example of a two by two matrix. To determine if the inverse of R even exists, take the determinant of the matrix, as such -

( 0 * 3 ) - ( 0 * 4 ) = 0 * 0 = 0

As you can see, the determinant is 0, and if so, the inverse of R doesn't exist. Thus, $R^-$ doesn't exist, as it is present as the inverse of R,

Solution = Option D

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Write the points (-3,5) and (1,1) in slope-intercept form

Jobisdone [24]

Y=mx+b
m=slope
b=yint

find slope
slope between (x1,y1) and (x2,y2) is (y1-y2)/(x1-x2)

given
(-3,5) and (1,1)
slope=(5-1)/(-3-1)=4/-4=-1

y=-1x+b
find b
when x=1, then y=1
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3 years ago

What is the algbraic expression for 2(x - 7) + 10

Step2247 [10]

Answer:

Two times the difference of x and seven plus ten

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Which relationship describes angles 1 and 2? Select each correct answer. A)adjacent angles

Talja [164]

Hey there!

As you can see, they are lying on the same line.

When two angles are on the same straight line, they are adjacent.

Adjacent angles are supplmentary.

Adjacent angles= 180 degrees Supplementary= 180 degrees

They are choices "A" and "B".

I hope this helps!
~kaikers

6 0

3 years ago

The diagonals of this rhombus are 8 and 16 units long. Their intersection creates four right angles, two 4-unit-long segments, a

Roman55 [17]

Answer:

$64\ \text{sq. units}$

Step-by-step explanation:

Area of a rhombus is the product of the length of the diagonals divided by two.

Length of one diagonal is 8 units and the other diagonal is 16 units

Area is given by

$A=\dfrac{8\times 16}{2}\\\Rightarrow A=64\ \text{sq. units}$

The area of the rhombus is $64\ \text{sq. units}$

Another approach is the diagonals have created 4 triangles where the base and is height is either 4 units long or 8 units long so the area of the rhombus would be the area of the 4 triangles.

$A=4\times \dfrac{1}{2}\times 4\times 8\\\Rightarrow A=64\ \text{sq. units}$

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3 years ago

I don't understand this factorisation a2+ 4a+3

Tomtit [17]

Answer:

$\boxed{\sf (a + 3)(a + 1)}$

Step-by-step explanation:

$\sf Factor \: the \: following: \\ \sf \implies {a}^{2} + 4a + 3 \\ \\ \sf The \: factors \: of \: 3 \: that \: sum \: to \: 4 \\ \sf are \: 3 \: and \: 1. \\ \\ \sf So, \\ \sf \implies {a}^{2} + (3 + 1)a + 3 \\ \\ \sf \implies {a}^{2} + 3a + a + 3 \\ \\ \sf \implies a(a + 3) + 1(a + 3) \\ \\ \sf \implies (a + 3)(a + 1)$

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3 years ago