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3 years ago

I need help on problem 3 a and b. Sorry if this is a bad photo! Thank you

Mathematics

2 answers:

dimulka [17.4K]3 years ago

3 0

A.) $15 will be the cost of Mama’s 15” pizzas.
B.) The cost will be $1 as a price per square inch.

frutty [35]3 years ago

3 0

Since 10 inch pizzas cost $10 each, 15 inch pizzas will cost $15.

Since 10 inch pizzas have an area of 25π square inches and cost $10 each, 15 inch pizzas that have an area of 56.25π square inches will cost $22.5.

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Pls answer this for me, this is the remainder theorem for grade 9 so help me.

professor190 [17]

Answer:

1. 3

2. 2

Step-by-step explanation:

| |

x | + | 1 | | x^2 | + | 4 x | - | 2

x^3 | + | 5 x^2 | + | 2 x | + | 1

x^3 | + | x^2 | | | |

| | 4 x^2 | + | 2 x | |

| | 4 x^2 | + | 4 x | |

| | | | -2 x | + | 1

| | | | -2 x | - | 2

| | | | | | 3

__________________________________________

| |

x | - | 5 | | x^2 | - | x | + | 0

x^3 | - | 6 x^2 | + | 5 x | + | 2

x^3 | - | 5 x^2 | | | |

| | -x^2 | + | 5 x | |

| | | | | | 2

| | | | | | 0

| | | | | | 2

5 0

3 years ago

Read 2 more answers

Which graph represents an exponential function<br><br> graphs in comments

Sladkaya [172]

I don’t know can’t see it

8 0

2 years ago

Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth.

likoan [24]

Answer:

Thus, the two root of the given quadratic equation $x^2+4=6x$ is 5.24 and 0.76 .

Step-by-step explanation:

Consider, the given Quadratic equation, $x^2+4=6x$

This can be written as , $x^2-6x+4=0$

We have to solve using quadratic formula,

For a given quadratic equation $ax^2+bx+c=0$ we can find roots using,

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$ ...........(1)

Where, $\sqrt{b^2-4ac}$ is the discriminant.

Here, a = 1 , b = -6 , c = 4

Substitute in (1) , we get,

$x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

$\Rightarrow x=\frac{-(-6)\pm\sqrt{(-6)^2-4\cdot 1 \cdot (4)}}{2 \cdot 1}$

$\Rightarrow x=\frac{6\pm\sqrt{20}}{2}$

$\Rightarrow x=\frac{6\pm 2\sqrt{5}}{2}$

$\Rightarrow x={3\pm \sqrt{5}}$

$\Rightarrow x_1={3+\sqrt{5}}$ and $\Rightarrow x_2={3-\sqrt{5}}$

We know $\sqrt{5}=2.23607$ (approx)

Substitute, we get,

$\Rightarrow x_1={3+2.23607}$ (approx) and $\Rightarrow x_2={3-2.23607}$ (approx)

$\Rightarrow x_1={5.23607}$ (approx) and $\Rightarrow x_2=0.76393}$ (approx)

Thus, the two root of the given quadratic equation $x^2+4=6x$ is 5.24 and 0.76 .

7 0

3 years ago

Read 2 more answers

A country's population in 1995 was 164 million. in 2001 it was 169 million. estimate the population in 2015 using the exponentia

Vaselesa [24]

1995. 164 million
2001. 169 million
t = 2001 - 1995 = 6
169 = $164 * p^{6}$
$p^{6} = \frac{169}{164}= 1.0304878 \\ p = \sqrt[6]{1.0304878}$
p = 1.00502
t 1 = 2015 - 2001 = 14
f ( t1 ) = $169 * 1.00502^{14}$
f (t1) = 169 * 1.0762 = 181.27
Answer: a country´s population in 2015 will be 181 million.

4 0

3 years ago

A STERO is was priced for $75. If this is a 15% increase was is the new price?

Delicious77 [7]

Answer:

75+75×15/100=75+11.25=86.25$

7 0

2 years ago

Read 2 more answers