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3 years ago

9

Ill give all my points: The fence around Marci’s house has decorative tops in the shape of square pyramids every 6 feet. She pai

nts every side of each top a different color. How much total surface area does Marci need to paint?

2 answers:

Dmitry [639]3 years ago

8 0

Answer:

it is 28/2= 14 x 4 = 56

Step-by-step explanation:

Nataly [62]3 years ago

4 0

Answer:

7 times 4 = 28 add 28 4 times

Step-by-step explanation:

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HURRYYYYYYYYY!! What is the equation of the quadratic function with a vertex at (2, 25) and an x-intercept at (7,0)?

tangare [24]

Answer:

$y=-(x-7)(x+3)$

which is none of the choices provided.

Are you sure the question is right or even the choices?

You can even write it as:

$y=-(x+3)(x-7)$ but this is still not a choice.

Step-by-step explanation:

The vertex form of a quadratic is $y=a(x-h)^2+k$ .

This is called vertex form because it gives you the vertex is $(h,k)$ .

We are given that $(h,k)=(2,25)$ which makes our equation:

$y=a(x-2)^2+25$ .

We can find the value of $a$ by plugging in the x-intercept (7,0) for $(x,y)$ into:

$y=a(x-2)^2+25$

$0=a(7-2)^2+25$

$0=a(5)^2+25$

Subtract 25 on both sides:

$-25=a(5)^2$

$-25=a(25)$

Divide both sides by 25:

$\frac{-25}{25}=a$

$-1=a$ .

So the equation for the quadratic is:

$y=-1(x-2)^2+25$

Let's put this into factored form since all the choices are in factored form.

This will require us to multiply the (x-2)(x-2) out:

$y=-1(x-2)(x-2)+25$

$y=-1(x^2-2x-2x+4)+25$

$y=-1(x^2-4x+4)+25$

$y=-x^2+4x-4+25$

$y=-x^2+4x+21$

Factor out -1:

$y=-(x^2-4x-21)$

WE need to find two numbers that multiply to be -21 and add to be -4:

$y=-(x-7)(x+3)$

8 0

3 years ago

Read 2 more answers

The Gross Domestic of a country in the first quarter of 2014 was $1.3299×10×8.<br> GPD=$

krek1111 [17]

The GDP of the country for 2014 is $5.3196 × 10⁸.

<h3>What is multiplication?</h3>

Multiplication is the process of multiplying, therefore, adding a number to itself for the number of times stated. For example, 3 × 4 means 3 is added to itself 4 times, and vice versa for the other number.

Given the Gross Domestic of a country in the first quarter of 2014 was $1.3299×10⁸. Therefore, the GDP of the country for that year will be,

GDP = 4 × (Gross Domestic for a single quarter)

= 4 × ($1.3299×10⁸)

= $5.3196 × 10⁸

Hence, the GDP of the country for 2014 is $5.3196 × 10⁸.

Learn more about Multiplication:

brainly.com/question/14059007

#SPJ1

6 0

1 year ago

Move vertex B to a different location. What is the sum of the angle measures of the quadrilateral?

stiv31 [10]

Answer:

360 degrees

Step-by-step explanation:

6 0

3 years ago

Which of the following is the solution to the inequality -2x-4 ≤ 11

Art [367]

Answer:

$x\geq -\frac{15}{2}$

Step-by-step explanation:

add 4 on both sides

leaves you with 15 on the right side

you then divide by negative 2

since you divide by a negative you have to switch the sign

4 0

3 years ago

Read 2 more answers

The original price of water skis was $200. What is the percent of discount?

nikitadnepr [17]

You need to tell how many percent you will discount and then find the new price

3 0

3 years ago