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viva [34]
3 years ago
6

What

Mathematics
1 answer:
Nataly_w [17]3 years ago
8 0
I assume you want the equation to be solved, so this is a quadratic simultaneous equation.

y = x^2-x-3 ——— (1)
y = -3x+5 ——— (2)

Sub (1) into (2)
(This is the first three steps provided)

x^2-x-3 = -3x+5
0 = x^2+2x-8
0 = (x-2)(x+4) ——— (3)

Solve for x in (3):

x-2 = 0
x = 2

x+4 = 0
x = -4

Sub x into (2)

y = -3(2) + 5
y = -1

y = -3(-4) + 5
y = 17

Hence the solution sets are:

x=2, y=-1
x=-4, y=17
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Please help I'm not very good at math and i don't really understand what's going on
solniwko [45]

Answer:

The amount left after each friend got $46.

Step-by-step explanation:

Any time you see R1 in bus stop method division, it just means remainder. So dividing 93 dollars between 2 friends gives them both 46 dollars, with one left over!

Hope this helps :)

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2 years ago
David created two functions. Function A can be represented by y=3/4x +2. Function be is represented by the graph below.
RideAnS [48]

Answer: don't know sorry

Step-by-step explanation:

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2 years ago
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Can someone please help me?
larisa86 [58]

We know that a triangle equals 180 degrees in total. We also know one of the angles so we can do 180-84= 96. This means that the other two angles must be equal to 96 degrees. We then set up (x+59)+(x+51)=96 "since both of the angles must add up to 96." Then we add like terms and get 2x+110=96. Further simplification gives us x= -7. Plug this into both angles and you get that angle A is 44 degrees.

8 0
3 years ago
The mean incubation time of fertilized eggs is 19 days. Suppose the incubation times are approximately normally distributed with
pochemuha

Answer:

a)17.92

b) 16.83 .... 21.17

Step-by-step explanation:

ρ→   z

0.14 = -1.080319341

-1.080 = (x - 19)/1 = 17.92

~~~~~~~~~~~~~~~~~~

3% / 2 = 1.5%

1.5% - 98.5%

ρ→   z

0.015 = -2.170090378 ....  -2.17 = (x-19) =16.83

0.985 = 2.170090378  ....   2.17 = (x-19) =21.17

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3 years ago
State if each pair of ratios forms a proportion....EXPLAIN AS WELL PLS!!!
ss7ja [257]

Answer:

1. 4/12 , 6/8

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10/16 = 5/8

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2. 16/21

3. 36/50

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A textbook weighs 2.5 pounds. How many kilograms does the textbook weighs? Round your answer to the nearest tenth of a pound. 1 kg = 2.2 lb

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2. 1.8 kg

3. 5.5 kg

4. 4.7 kg

2.5 lbs * (1 kg/2.2 lbs) =

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2. 12

3. 16

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8 * 6 = 48

so what is 2 times 6 ?

or another way

1/4 * 48 = 12

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Step-by-step explanation:

hope this help and plz mark me a brainiest

4 0
3 years ago
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