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3 years ago

Please tell me the answer to this

Mathematics

1 answer:

Bad White [126]3 years ago

6 0

Answer:

Wow you got s lot of questions wrong

Step-by-step explanation:

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The gift shop at Manatee mall was having a clearance sale everything was marked down 30% off the original price of a manatee tha

Dmitrij [34]

The manatee is 12.60$ for the clearance price.

6 0

3 years ago

Write the equation of the parabola that has the vertex at point (− 1/2 ,2.3) and passes through the point (5,2 3/4 ).

Alex73 [517]

Answer:

The equation of parabola in vertex form is $y=0.015(x+0.5)^2+2.3$

Step-by-step explanation:

Given coordinate of vertex is $(-\frac{1}{2},2.3)$ and the parabola passes through the point $(5,2\frac{3}{4})$

So, the equation of parabola in vertex form is

$y=a(x-h)^2+k$

Where $(h,k)$ is the coordinate of the vertex.

$(h,k)=(-\frac{1}{2},2.3)=(-0.5,2.3).\\\\So,\ h=-0.5\ and\ k=2.3$

Plugging these value in equation we get,

$y=a(x-(-0.5))^2+2.3\\\\y=a(x+0.5)^2+2.3$

Now, we will find the value of $a$

Plug the coordinate $(5,2\frac{3}{4})$

$(x,y)= (5,2\frac{3}{4})\\\\(x,y)=(5,\frac{11}{4})\\\\(x,y)=(5,2.75)$

$2.75=a(5-(-0.5))^2+2.3\\\\2.75=a(5+(0.5))^2+2.3\\\\2.75=a(5.5)^2+2.3\\\\2.75=a\times30.25+2.3\\\\2.75-2.3=a\times30.25\\\\0.45=a\times30.25\\\\\frac{0.45}{30.25}=a\\ \\a=0.0149$

Plug the value of $a$ in the equation $y=a(x+0.5)^2+2.3$

So, the equation of parabola with vertex $(-\frac{1}{2},2.3)$ and passes through the point $(5,2\frac{3}{4})$ is

$y=0.0149(x+0.5)^2+2.3$ ≅ $y=0.015(x+0.5)^2+2.3$

5 0

3 years ago

How do we calculate 25% of 300

Natali5045456 [20]

25% is equal to $\frac{1}{4}$ . To get 25% of 300, we multiply 300 by either 0.25 or $\frac{1}{4}$ . This gives us $(300)( \frac{1}{4}) = \frac{300}{4} = \frac{150}{2} = 75$

4 0

3 years ago

Read 2 more answers

Factor completely: 32 + −10.

Charra [1.4K]

Answer:

Step-by-step explanation:

you are adding negative 10 so your number gets smaller

5 0

3 years ago

Read 2 more answers

During a school event, there were 8 times as many pupils as teachers and there were three times as many boys as girls. There wer

Lilit [14]

We know that pupils are students

Students = S
boys = B
Teachers = T

So....

S = 8T
Boys = 3G
T = B - 70

Since there is 8x students than teachers, I did Boys = 6x and girls = 2x

I'm going to use this next: S = 8T

8x = 8(B -70)

8x = 8(6x - 70)

8x = 4x - 560

x = 14

We know there is 8x students, so there are 112 students and we know that there is 1/8 of teachers, so there are 14 teachers.

Answer = 126.

3 0

2 years ago