2 years ago

I need help please! i dont know!

Mathematics

2 answers:

zvonat [6]2 years ago

7 0

There is 12.5% you can do we it

Kaylis [27]2 years ago

4 0

Answer:

there is a 12.5% increase

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I need help with this please.

quester [9]

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4 0

2 years ago

Ok help find the statements and reasons. I am confused and I think I got some things wrong

qwelly [4]

It is given that

$\angle EDF\cong\angle GHF$

An angle in geometry is denoted by the angle symbol (∠) followed by three letters which represent points that form the angle. ∠EDF means that E and F are the "tips" of the angle and D is the vertex in the middle, therefore, ∠FDE represents the same angle.

$\angle EDF=\angle FDE$

And also

$\angle GHF=\angle FHG$

Therefore

$\angle EDF\cong\angle GHF\Rightarrow\angle FDE\cong\angle FHG$

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1 year ago

Standard to vertex form -x^2-3x+8

stich3 [128]

The vertex form:

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

(h, k) - vertex

$f(x)=ax^2+bx+c\\\\h=\dfrac{-b}{2a},\ k=f(h)$

We have

$f(x)=-x^2-3x+8\\\\a=-1,\ b=-3,\ c=8\\\\h=\dfrac{-(-3)}{2(-1)}=\dfrac{3}{-2}=-\dfrac{3}{2}\\\\k=f\left(-\dfrac{3}{2}\right)=-\left(-\dfrac{3}{2}\right)^2-3\left(-\dfrac{3}{2}\right)+8=-\dfrac{9}{4}+\dfrac{9}{2}+8\\\\=-\dfrac{9}{4}+\dfrac{18}{4}+\dfrac{32}{4}=\dfrac{-9+18+32}{4}=\dfrac{41}{4}\\\\Answer:f(x)=-\left(x-\left(-\dfrac{2}{3}\right)\right)^2+\dfrac{41}{4}=-\left(x+\dfrac{3}{2}\right)^2+\dfrac{41}{2}$

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3 years ago

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A group of men and women were given a maze puzzle. The time it took each person to solve the puzzle is recorded in the table. Co

levacccp [35]

The Answer Is

<u><em>The sample size of men is $19$ , and the sample size of women is $34$ The mean time taken by $Women$ to solve the puzzle is less than that taken by $Men$ </em></u>

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3 years ago

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Car A covers 100 miles in 120 minutes, while car B covers 300 miles in 5 hours. How do car A and car B speeds compare (Hint: 60

Korolek [52]

Answer:

option D. Car A has the same speed as car B.

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2 years ago