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4 years ago

What’s the answer to this question quickly?

Mathematics

2 answers:

marissa [1.9K]4 years ago

8 0

Domain : x-values , curve starts at x=3 and goes to the right. [3,infinity)

Range: y-values, curve goes both up and down forever. (-infinity,infinity)

dalvyx [7]4 years ago

4 0

Im not sure tbh with you but I think the answer might be the second one

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Mike has a total of 25 dimes and nickels. If the total value of the coins is $1.90 how many of each coin does he have?

bezimeni [28]

Answer:

12 nickels and 13 dimes

Step-by-step explanation:

d = # of dimes

n = # of nickels

Set up a System of Equations as follows:

d + n = 25

.10d + .05n = 1.90

now solve for 'd' or 'n' and use Substitution:

d = 25-n

.10(25-n) + .05n = 1.90

2.5 - .10n + .05n = 1.90

-.10n + .05n = -0.6

-.05n = -0.6

n = -0.6/-.05

n = 12

d + 12 = 25

d = 13

Check: 12(.05) + 13(.10) should equal 1.90

0.60 + 1.30 = 1.90

1.90 = 1.90

3 0

3 years ago

Read 2 more answers

If A, B, and Care 2x2 matrices; and det(A) = -2, det(B) = -3, and det(C)=-4 then compute: det(4C^TA^-1 C^TB^3) = 0 Official Time

almond37 [142]

Answer with explanation:

|A| = -2

|B|= -3

|C| = -4

$|4 C^TA^{-1}C^TB^{3}|=4 |C||A|^{-1}|C||B|^3, \text{as}|C^T|=|C|,|A^n|=A^n\\\\=4 \times (-4) \times (-2)^{-1} \times (-4) \times (-3)^3\\\\=4 \times (-4) \times \frac{-1}{2} \times (-4) \times (-27)\\\\=-1728 \times \frac{-1}{2} \\\\=864$

3 0

3 years ago

To decrease a number by 40%, what do we multiply by???

andrew-mc [135]

Answer:

Step-by-step explanation:

to decrease a number by 40% i would do

100% = number you got

50% divide by 2

10%= dived 100% number by 10 then take the 10% away from the 50% to get 40%

then take the 40% away from the 100%

hope this helps :)

7 0

3 years ago

The graph shows the rate at which paint is used to paint a wall. wat are the values to each statement below based on the graph.

zhuklara [117]

Answer:

Step-by-step explanation:

When 1 gallon is has been used 400 square feet of the wall will be paint
The unit rate is 400 square feet per gallon

3 0

4 years ago

PLEASE HELP !! DUE AT 12!

mariarad [96]

Answer:

<em>angle KNM = 131 degree</em>

Step-by-step explanation:

angle MNJ = angle KNL ( vertically opposite angles)

angle KNM + angle KNL = 180 degree ( linear pair)

8x-5 + 4x-19 = 180 degree

8x + 4x -5 -19 = 180

12x - 24 = 180

12x = 180+24

12x= 204

x= 204/12

x= 17

angle KNM = 8x-5

= 8(17) -5

= 136 -5

= 131

Angle KNM = 131 degree

<em>Hope this helps.</em>

5 0

3 years ago