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3 years ago

Help please!!!!!!!!

Mathematics

1 answer:

Pavel [41]3 years ago

4 0

Multiply each row in the first matrix by each column in the second matrix:

1*2 + 3*3 + 1*4 1*-2 + 3*5 + 1*1

-2*2 + 1*3 + 0*4 -2*-2 + 1.5 + 0*1

Simplify to get

[15 14

-1 9]

The third choice is the correct answer.

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Use the point-slope formula to write an equation of the line that passes through (-5,3) and

trapecia [35]

Answer:

The equation in point slope form is $y-6=\frac{1}{3}(x-4)$

The equation in slope intercept form is $y=\frac{1}{3}x-\frac{14}{3}$

Step-by-step explanation:

step 1

Find the slope m

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have

$(-5,3),(4,6)$

Substitute the values

$m=\frac{6-3}{4+5}$

$m=\frac{3}{9}$

simplify

$m=\frac{1}{3}$

step 2

Find the equation of the line in point slope form

$y-y1=m(x-x1)$

we have

$m=\frac{1}{3}$

$(4,6)$

substitute

$y-6=\frac{1}{3}(x-4)$ ---> equation in point slope form

step 3

Find the equation of the line in slope intercept form

$y=mx+b$

$y-6=\frac{1}{3}(x-4)$ ----> convert to slope intercept form

$y-6=\frac{1}{3}x-\frac{4}{3}$

$y=\frac{1}{3}x-\frac{4}{3}+6$

$y=\frac{1}{3}x-\frac{14}{3}$

5 0

3 years ago

Round 5.702 to the nearest unit

jolli1 [7]

5.702 rounded to the nearest unit is 6. Look one decimal place further to determine what to round to. Greater than or equal to 5, round up. Less than 5, keep it the same.

For example, 5.402 rounded to the nearest unit would be 5 because the next decimal point is 4

3 0

3 years ago

What is -8z-8x+5a+5c-8y+5b

EleoNora [17]

5a + 5b + 5c - 8x - 8y - 8z

8 0

4 years ago

Write an equation for each translation of y=|x| .

bija089 [108]

Answer:

y = |x| -13

Step-by-step explanation:

recall for any function y = f(x), to translate the function vertically by any value "a", we simply have to add "a" to f(x).

If a is positive, then the graph is translated in the positive y-direction (i.e upwards), if a is negative, then the graph is translated in the negative y-direction (i.e downwards)

In our case , the graph is translated vertically by 13 units (i.e a = 13) and it is to be translated downwards (i.e negative)

hence we add a= -13 to the original function.

y = f(x) + (-13)

y = |x| + (-13)

y = |x| -13

7 0

3 years ago

The area of a circle is 19.7cm². what is the radius?

Luba_88 [7]

Step-by-step explanation:

area of a circle = 19.7cm²

πr²= 19.7cm²

22/7 r²= 19.7

r= 2.50 cm

3 0

3 years ago