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3 years ago

I need help understanding Area perimeter Anlgebra

Mathematics

1 answer:

nignag [31]3 years ago

8 0

Answer:

ok so this is what I personaly remember and understood

Step-by-step explanation:

to get perimeter you add up all the sides of the shape/form and for area you have to multiply length by width by height or something like that im not realy sure though for area

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Latisha hired 4 babysitters in the last month. She paid a total of $170 in babysitting fees. If each babysitter worked a total o

VashaNatasha [74]

8.5Step-by-step explanation:

4 0

3 years ago

Can anyone answer this?

elena-14-01-66 [18.8K]

I believe yes, no, no, no but I am not sure

7 0

2 years ago

For this right triangle, what is the cosine of angle C?

ollegr [7]

Answer:

A cos C = 12/13

Step-by-step explanation:

cos theta = adjacent side/ hypotenuse

cos C = BC/AC

But we don't know BC, but we can find it using the Pythagorean theorem

a^2 +b^2 = c^2

5^2 +BC^2 = 13^2

25 + BC ^2 =169

Subtract 25 from each side

BC^2 = 169-25

BC ^2 = 144

Taking the square root of each side

BC =12

cos C = 12/13

3 0

3 years ago

Research has suggested that musicians process music in the same cortical regions in which adolescents process algebra. When taki

svet-max [94.6K]

Answer:

c. an observed difference is 0.12 and P < 0.0001

Step-by-step explanation:

Let p1 be the proportion of the students who received musical instruction received a passing grade

Let p2 be the proportion of the students who didn't receive musical instruction received a passing grade

Null and Alternative hypotheses are:

$H_{0}$ : p1-p2=0

$H_{a}$ : p1-p2≠0

Test statistic can be found using the equation:

$z=\frac{p1-p2}{\sqrt{{p*(1-p)*(\frac{1}{n1} +\frac{1}{n2}) }}}$ where

p1 is the sample proportion of the students who received musical instruction received a passing grade ( $\frac{2818}{3239} =0.87$ )

p2 is the sample proportion of the students who didn't receive musical instruction received a passing grade ( $\frac{2091}{2787} =0.75$ )

p is the pool proportion of p1 and p2 ( $\frac{2818+2091}{6026}=0.81$ )

n1 is the sample size of the students who received musical instruction (3239)

n2 is the sample size of the students who didn't receive musical instruction (2787)

Thus, $z=\frac{0.87-0.75}{\sqrt{{0.81*0.19*(\frac{1}{3239} +\frac{1}{2787}) }}}$ ≈ 11.84 gives p-value < 0.0001

Observed difference is: 0.87-0.75=0.12

5 0

4 years ago

Help please asap im confused

BartSMP [9]

Answer:

1st page: x = 4 cubes

2nd page: B) x=34

Step-by-step explanation:

1st page:

ok so for the 1st page it will make it easier to convert this to an equation . the picture is saying that:

x + 6 cubes = 8 cubes

now you can just solve the equation:

x + 6 cubes = 8 cubes

-6 cubes -6 cubes

x=4 cubes

2nd page:

x + 23 = 57

-23 -23

x = 34

hope this helps!! :)

8 0

3 years ago

I need help understanding Area perimeter Anlgebra​

I need help understanding Area perimeter Anlgebra