MATHEMATICS HIGH SCHOOL

Use the slider to change the scale factor. The rectangle is 20 by 16 and the scale factor is 0.25. What are the dimensions of the reduced rectangle? ​

Answers

Answer 1
Answer:

Answer:

5 by 4

Step-by-step explanation:

sleepy haha sleepy sleepyy
Answer 2
Answer:

Answer:

THe answer 5 by 4

Step-by-step explanation:

:)

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What is the volume of a hemisphere with a radius of 9.7 cm, rounded to the nearest tenth of a cubic centimeter? please i need help ill do a zoom call and i'll give you all my Branly points if uu help me.

Answers

The volume of a hemisphere is 1910.52 cm^(3).

What is volume of a hemisphere?

A hemisphere is half of a full sphere, we can calculate the volume of a hemisphere just by halving the volume of the complete sphere.

So, we can calculate the volume of a hemisphere by using the following formula,

$V=(2)/(3)\pi {{r}^(3)}$

Here, r is the radius, V is the volume of hemisphere.

So,

It is given that the radius is 9.7 cm.

We have to find V.

So,

$V=(2)/(3)\cdot 3.14\cdot {{\left( 9.7 \right)}^(3)}$

V=1910.52

Hence, the volume of hemisphere is $1910.52\text{ c}{{\text{m}}^(3)}$.

Learn more about volume of hemisphere here,

brainly.com/question/23118911

#SPJ2

Answer:

volume of hemisphere =1912.26cm^3

Step-by-step explanation:

radius(r)=9.7cm

now volume of hemisphere=(2/3)πr^(3)

                                           =(2/3)*(22/7)*(9.7)^3

                                            =(2/3)*(22/7)*912.673

                                              =(2/3)*2868.40086

                                             =1912.26cm^3

A park is shaped like a trapezoid. It has a top base of 1.2 miles and a bottom base of 2.4 miles. If the height is 4 miles, what is the area of the trapezoid?

Answers

Answer:

7.2 mi^2

Step-by-step explanation:

A trapezoid is a plane shape and its area isgiven as;

A = (1)/(2) (a + b) h

where a = top base of trapezoid = 1.2 miles

b = bottom base of trapezoid = 2.4 miles

h = height of trapezoid = 4 miles

Hence, the area of the trapezoid shaped park is:

A = (1)/(2) * (1.2 + 2.4) * 4\n\nA = (1)/(2) * 3.6 * 4\n\nA = 7.2 mi^2

The area of the trapezoid shaped park is 7.2 mi^2.

On discovering that her family had a 70% risk of heart attack, Erin took a treadmill test to check her own potential of having a heart attack. The doctors told her that the reliability of the stress test is 67%. What is the probability that Erin will not have a heart attack and the test predicts that she will?

Answers

Answer:

A. 0.099

:)

Step-by-step explanation:

Answer-

The probability that Erin will not have a heart attack and the test predicts that she will is, 46.5% .

Hint- This a conditional probability problem where Bayes theorem should be applied.

Solution-

Applying Bayes theorem,

P(No\ heart\ attack\ |\ Correctly\ tested)

=(P(Correctly\ tested\ |\ No\ heart\ attack)P(No\ heart\ attack))/(P(Correctly\ tested))

P(Correctly\ tested\ |\ No\ heart\ attack)=67\%=0.67

P(No\ heart\ attack)=1-P(heart\ attack)=1-0.7=0.3

P(Correctly\ tested)=[P(No\ heart\ attack)* P(Correctly\ tested)]+[P(Heart\ attack)* (Incorrectly\ tested)]

=[0.3* 0.67]+[0.7* 0.33]=0.432

Putting the values,

P(No\ heart\ attack\ |\ Correctly\ tested)=(0.67* 0.3)/(0.432) =0.465

∴ There is a 46.5% chance that Erin will not have a heart attack even though the test predicts that she will.

How do I show the distributive property for 6x7

Answers

6*7

=6(1+1+1+1+1+1+1)

=6*1+6*1+6*1+6*1+6*1+6*1+6*1

=6+6+6+6+6+6+6

=42


the answer is 42 because there is no other numbers in parentheses

 

Y^20=( )^2
1) y^4
2) y^5
3)y^10
4)y^12

Answers

y^20 = (?)^2

We want to find the missing number. Let's first think about how exponents are dealt with. If there are two exponents (ex: (z^5)^2) then the exponents multiply to find your new exponent (ex: z^10).

Therefore, we want the power of y to multiply by 2 and equal 20. The answer is 3) y^10.

(y^10)^2 = y^20

Simplify fully 4x + 3y -2 + 2x - 8y -6

Answers

Hi, Amyleighx!

First we want to identify any common factors.
4x+3y-2+2x-8y-6
3y-8y=-5y
4x+2x=6x
-2-6=-8
-5y+6x-8

I hope this helps;)
combine like terms. you can combine 4x and 2x, so that is 6x. now combine 3y and-8y and get -5y. combine-2 and -6 and get -8. now put ur terms together. 6x-5y-8
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