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RUDIKE [14]
3 years ago
12

Complete the missing value in the solution to the equation. y=-2x+4 y=-2

Mathematics
1 answer:
anygoal [31]3 years ago
3 0

Answer:

X=3,y=-2

Step-by-step explanation:

This is a simultaneous equation question and we will have to solve using substitution method

So let's solve

y=-2x+4...(1)

y=-2....(2)

Let's substitute (2) into (1)

-2=-2x+4

Substrate 4 from both sides

-6=-2x

Divide both sides by-2

x=3

Substitute the value of x in (1)

y=-2(3)+4

y=-6+4

y=-2

Therefore x is 3,y is -2

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Answer:
1.49606 inches

Explain;
Conversion rate:
1 millimetre = 0.0394 inch

(a brainliest would be appreciated)
7 0
3 years ago
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MATH HELP PLEASE 50 POINTS:
Delicious77 [7]

Answer:

f(x)=-a(x+2)(2x-1)(x-3) where a>0.

To graph the the polynomial, begin in the left top of quadrant 2. Then draw downwards to the first real zero on the x-axis at -2. Cross the x-axis and then curve back up to 1/2 on the x-axis. Cross through again and curve back down to cross for the last time at 3 on the x-axis. The graph then ends going down towards the right in quadrant 4. It forms an s shape.

Step-by-step explanation:

The real zeros are the result of setting each factor of the polynomial to zero. By reversing this process, we find:

  • zero -2 is factor (x+2)
  • zero 1/2 is factor (2x-1)
  • zero 3 is factor (x-3)

We write them together with an unknown leading coefficient a which is negative so -a.

f(x)=-a(x+2)(2x-1)(x-3) where a>0

The leading coefficient of a polynomial determines the direction of the graph's end behavior.

  • A positive leading coefficient has the end behavior point up when an even degree and point opposite directions when an odd degree with the left down and the right up.
  • A negative leading coefficient has the end behavior point down when an even degree and point opposite directions when an odd degree with the left up and the right down.
  • This graph has all odd multiplicity. The graph will cross through the x-axis each time at its real zeros.

To graph the the polynomial, begin in the left top of quadrant 2. Then draw downwards to the first real zero on the x-axis at -2. Cross the x-axis and then curve back up to 1/2 on the x-axis. Cross through again and curve back down to cross for the last time at 3 on the x-axis. The graph then ends going down towards the right in quadrant 4. It forms an s shape.

4 0
3 years ago
For each sequence, find the first 4 terms of a sequence:<br><br> a) n²+3<br> b) 2n²
Vesna [10]

Answer:

a) 4, 7, 12, 19

b) 2, 8, 18, 32

Step-by-step explanation:

Sequence is just number line sir, so to begin with you get n=1, then n=2, then n=3, then n=4, these are the first 4 terms

8 0
2 years ago
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If 12 boxes of soap weigh 2.4 kg what will be the weight of 8 boxes of the same kind of soap​
RUDIKE [14]

Answer:

1.6kg

explanation:

2.4kg = 12 boxes of the soap

0.8kg = 4 boxes of the soap

1.6kg = 8 boxes of the soap

6 0
3 years ago
A grocery store was having a sale. Darla had $15 in her wallet. She planned to purchase 2 gallons of fruit juice, 3 bags of chip
Genrish500 [490]

Complete question :

grocery store was having a sale. Darla had $15 in her wallet. She planned to purchase 2 gallons of fruit juice, 3 bags of chips, and a box of cupcakes. Item Sale Price Gallon of fruit juice $3.50 for first gallon, 50% off the second gallon Bag of Chips 2 for $5 or $2.65 each Box of cupcakes $4.79 How much would Darla pay for her groceries before tax? Show your work.

Answer:

$17.69

Step-by-step explanation:

Amount had = $15

Items to be purchased = 2 gallons of fruit juice, 3 bags of chips, and a box of cupcakes.

First gallon of juice = $3.50

Second gallon = 0.5 * 3.50 = $1.75

3 Bags of chips = $2.65 + $5 = $7.65

A box of cupcake = $4.79

Total cost before tax = $(3.50 + 1.75 + 7.65 + 4.79)

= $17.69

5 0
3 years ago
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