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12345 [234]
3 years ago
12

two friend went to a restaurant and ordered one plain pizza and two sodas. Their bill totaled $15.95 .Later that day ,five frien

ds went to the same restaurant .They ordered three plain pizzas and each person had one soda .Their bill totaled $45.90 .Write and solve a system of equations to determine the price of one plain pizza
Mathematics
1 answer:
zysi [14]3 years ago
6 0
The awnser would be 8.00
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<img src="https://tex.z-dn.net/?f=3%20%5Cdiv%20441%20%3D%20" id="TexFormula1" title="3 \div 441 = " alt="3 \div 441 = " align="a
laila [671]
This is the decimal answer 0.00680272108
3 0
2 years ago
The square of a number is 12 less than 7 times the number. What is the number?
hjlf

<u><em>Answer:</em></u>

The number is either 3 or 4


<u><em>Explanation:</em></u>

Assume that the number we are looking for is x

The square of the number would be x²

7 times the number would be 7x


<u>We are given that:</u>

square of the number (x²) is 12 less than 7 times the number (7x)


<u>Translating this into an equation, we would have:</u>

x² = 7x - 12


<u>Rearranging the quadratic equation:</u>

x² - 7x + 12 = 0


<u>Now, we factor the equation:</u>

(x-4)(x-3) = 0


<u>This means that:</u>

either x-4 = 0 ..................> x = 4

or x-3 = 0 ........................> x = 3


<u>Let's check if any of the solutions is an extrovert:</u>

For x = 3 .............> (3)² = 7(3) - 12 .........> 9 = 21 - 12 .......> 9 = 9 .......> not extrovert

For x = 4 .............> (4)² = 7(4) - 12 .........> 16 = 28 - 12 .....> 16 = 16 ....> not extrovert


Since we have no restrictions on the number, therefore, both solutions would be accepted


Hope this helps :)


7 0
3 years ago
Work out<br> (9×10²)+(7×10³)<br> State your answer in standard form
Sunny_sXe [5.5K]

Answer:

(9×10×10)+(7×10×10)

900+700

1600

1.6×10^3

4 0
3 years ago
Rewrite by completing the square 2x^2+7x+6=0
Kitty [74]

Answer:

2x^2+7x+6=0\\\\2(x^2+\frac72x+3)=0\\\\2[x^2+2\cdot x\cdot\frac74+(\frac74)^2-(\frac74)^2+3]=0\\\\2[x^2+2\cdot x\cdot\frac74+(\frac74)^2]-2(\frac74)^2+6=0 \\\\2(x+\frac74)^2-2\cdot\frac{49}{16}+6=0\\\\2(x+\frac74)^2-\frac{49}8+\frac{48}8=0\\\\2(x+\frac74)^2-\frac18=0

6 0
3 years ago
KatyDid Clothes has a $120 million (face value) 25-year bond issue selling for 103 percent of par that carries a coupon rate of
Oliga [24]

Answer:

8.704%

Step-by-step explanation:

The computation of the before cost of debt is as follows

Given that

Future value = $100

Present value = $103

NPER = 25 × 2 = 50

PMT = $100 × 9% ÷ 2 = $4.5

The formula is presented below:

= -RATE(NPER;PMT;PV;FV;TYPE)

After applying the above formula, the rate is 4.3518%

Yearly rate is

= 4.3518% ×2

= 8.704%

5 0
2 years ago
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