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3 years ago

Helppppp and explain tooo pls and thankyouuu

Mathematics

1 answer:

Nina [5.8K]3 years ago

6 0

Answer:

--- ---

| -5 -2 |

| 4 12 |

--- ----

Step-by-step explanation:

A matrix can only be added to (or subtracted from) another matrix if the two matrices have the same dimensions . To add two matrices, just add the corresponding entries, and place this sum in the corresponding position in the matrix which results.

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Find the x-intercepts and y-intercept for the parabola below. Write answers as (x,y) coordinates.

poizon [28]

Assuming the function is $y=2x^2-4x-6$
the x intercepts are where the graph hits the x axis or where y=0
the y intercepts are where the graph hits the y axis or where x=0

x intercepts
set y=0 and find x
$0=2x^2-4x-6$
$0=2(x^2-2x-3)$
what 2 numbers multiply to get -3 and add to get -2?
-3 and 1
$0=(2)(x-3)(x+1)$
set to 0
0=x-3
3=x
0=x+1
-1=x

x intercepts are at x=-1 and 3 or the points (-1,0) and (3,0)

y intercepts are where x=0
set x=0
$y=2(0)^2-4(0)-6$
$y=0-0-6$
$y=-6$
y intercept is at (0,-6)

x intercepts are at (-1,0) and (3,0)
y intercept is at (0,-6)

5 0

3 years ago

Help please quickly.

Viefleur [7K]

Answer:

3.5

Step-by-step explanation:

Look at the .5's closely if you take the 2.5 measurement info and then there is a little bit left that may be another .5 measurement.

6 0

3 years ago

I need help with these 4 questions!

Brut [27]

1) (576*3/128) minutes
2) 81 men, 19 women. Total 100. 81/100 men. With 250 members, (250*81/100) men
3) (240*7/3) books in total
4) (92*7/2) total tickets

6 0

4 years ago

Scott's employer pays 70 percent of his health insurance premium and deducts the remainder from his paychecks. Scott is paid biw

cricket20 [7]

Answer is 100.94

HOPE IT HELPS!

8 0

3 years ago

A-b

Lynna [10]

Answer:

$\boxed{\sf d. \ \frac{a}{b} = \frac{10}{7}}$

Step-by-step explanation:

$\sf \implies \dfrac{a - b}{b} = \dfrac{3}{7} \\ \\ \sf \implies \frac{a}{b} - \frac{b}{b} = \frac{3}{7} \\ \\ \sf \implies \frac{a}{b} - 1 = \frac{3}{7} \\ \\ \sf \implies \frac{a}{b} - 1 + 1 = \frac{3}{7} + 1 \\ \\ \sf \implies \frac{a}{b} = \frac{3}{7} + 1 \\ \\ \sf \implies \frac{a}{b} = \frac{3}{7} + \frac{7}{7} \\ \\ \sf \implies \frac{a}{b} = \frac{3 + 7}{7} \\ \\ \sf \implies \frac{a}{b} = \frac{10}{7}$

6 0

3 years ago

Read 2 more answers