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3 years ago

Help me pls I really need this thank you soo much :)

Mathematics

2 answers:

horrorfan [7]3 years ago

5 0

A is the answer for number 6

Svetach [21]3 years ago

5 0

Just do 63/-9 which is -7

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Suppose A,B and C are 2 ×2 matrices , E,F and G are 3 × 3 matrices, H and K are 2×3 matrices and L and M are 3×2 matrices. For e

Alekssandra [29.7K]

Answer:

a) 2x2 b)3x3 c) Not possible d) 2x3 e) 3x2 f) 3x3 g)Not possible h)3x2

Step-by-step explanation:

-> we can only add matrices with same size

-> we can only multiply when columns of first equal to rows of second

-> nxm multiplied by pxq gives nxq eg 3x2 mul 2x2 gives 3x2

-> addition and mul by const number dont change the size

So considering the above facts :-

a) AB+C = [(2x2)(2X2)]+(2x2)=(2x2)+(2x2)=2x2

b) 3GF =3[(3x3)(3x3)]=3(3x3)=3x3

c)CK+B= [(2x2)(2x3)]+(2x2)=(2x3)+(2x2) which is not possible (see point 1)

d)CK+H =as CK is (2x3) so (2x3)+(2x3)=(2x3)

e)EMC=[(3x3)(3x2)](2x2)=(3x2)(2x2)=3x3

f)GLH=[(3x3)(3x2)](2x3)=(3x2)(2x3)=3x3

g)HLG=[(2x3)(3x2)](3x3)=(2x2)(3x3)= not possible(see point 2)

h)2EL+5MB=2[(3x3)(3x2)]+5[(3x2)(2x2)]=(3x2)+(3x2)=3x2

8 0

3 years ago

The sum of two numbers is 42. If one third of one number is 5 greater than one sixth of another number, which of

olganol [36]

Answer:

The answer is 22. Sorry if I am wrong

4 0

3 years ago

Read 2 more answers

Which function is a linear function?

Anettt [7]

For this case we have that by definition, a linear function is of the form

$y = mx + b$

We have the following options:

A) $1-3x ^ 2 = -y$

Rewriting:

$y = 3x ^ 2-1$

It's a quadratic function!

B) $y + 7 = 5x$

Rewriting:

$y = 5x-7$

It's a linear function!

C) $x ^ 3 + 4 = y$

Rewriting:

$y = x ^ 3 + 4$

It's a cubic function.

D) $9 (x ^ 2-y) = 3$

Rewriting:

$9x ^ 2-9y = 3\\9y = 9x ^ 2-3\\y = x ^ 2- \frac {3} {9}$

It's a quadratic function!

E) $y-x ^ 3 = 8$

Rewriting:

$y = x ^ 3 + 8$

It's a cubic function!

Answer:

The linear function is option B

4 0

3 years ago

I WILL GIVE BRAINLY

Simora [160]

Answer:

Step-by-step explanation:

We will let d represent the amount of dimes Angela has.

Angel has 5 fewer quarters than twice the number of dimes.

Twice the number of dimes will be 2d.

Then, 5 fewer will yield 2d-5.

Therefore, the amount of quarters Angela has is 2d-5.

Then, the total amount of coins (dimes and quarters) together, will be:

$d+(2d-5)$

The first part is the amount of dimes.

And the second part is, as we determined, the amount of quarters.

Therefore, our answer is D.

7 0

3 years ago

7. A photograph negative measures 15 inches by

ella [17]

Answer:

First we need to set a proportion

Currently the negative measures 15 inches by 2 inches. And the longer dimension of the printed version is 4 inches. Therefore:

$\frac{2}{y} = \frac{15}{4}$

$15y = 8$

$y = 0.5333$

Therefore, the dimension of the shorter dimension is 0.5333.

None of the options matches this response, so maybe you forgot to add some information?

8 0

3 years ago