Ask question

Ask question

All categories

3 years ago

7

yesterday, there was 80 problems assigned for math homework. harry did 20% of them correctly. how ,many problems did harry get r

ight?

2 answers:

larisa [96]3 years ago

6 0

80÷100 x 2 ÷10 = 400 ÷ 20 = 15

Igoryamba3 years ago

3 0

400 i think i am pretty sure but if it's wronge i apolize

You might be interested in

It’s been found that 85% of American adults suffer from triskaidekaphobia (fear of the number 13). Researchers think this is too

uysha [10]

Answer:

Null Hypothesis, $H_0$ : p $\leq$ 85%

Alternate Hypothesis, $H_A$ : p > 85%

Step-by-step explanation:

We are given that it's been found that 85% of American adults suffer from triskaidekaphobia (fear of the number 13).

A USA Today/Gallup poll asked 1,006 randomly selected people 18 years old and older in telephone interviews "Suppose you checked into a hotel and were given a room on the thirteenth floor. Would this bother you or not?" 87% of the survey respondents answered they would be bothered.

Let p = <u><em>proportion of respondents who would be bothered about given a room on the thirteenth floor</em></u>

SO, Null Hypothesis, $H_0$ : p $\leq$ 85%

Alternate Hypothesis, $H_A$ : p > 85%

Here, <u>null hypothesis states that</u> the proportion of respondents who would be bothered about given a room on the thirteenth floor is less than or equal to 85%.

On the other hand, <u>alternate hypothesis states that</u> the proportion of respondents who would be bothered about given a room on the thirteenth floor is more than 85%.

Hence, this would be the correct null and alternative hypothesis.

6 0

3 years ago

Insert whether each of the following fractions is proper or improper

Nookie1986 [14]

A fraction with the numerator (the top number) being larger then the bottom is an improper fraction. 4/2
A fraction with the denominator (bottom fraction) being heavier is a proper fraction. 2/4
A normal fraction with a whole number next to it is a mixed fraction. 2 4/5

7 0

3 years ago

Solve the following initial-value problem:<br><br> (ex+y)dx+(3+x+yey)dy=0, y(0)=1<br><br> 0=

alex41 [277]

Answer:

$e^x+xy+3y+(y-1)e^y=4$

Step-by-step explanation:

Given that

$(e^x+y)dx+(3+x+ye^y)dy=0$

Here

$M=e^x+y$

$N=3+x+ye^y$

We know that

M dx + N dy=0 will be exact if

$\frac{\partial M}{\partial y}=\frac{\partial N}{\partial x}$

So

$\frac{\partial M}{\partial y}=1$

$\frac{\partial N}{\partial x}=1$

it means that this is a exact equation.

$\int d\left(e^x+xy+3y+(y-1)e^y\right)=0$

Noe by integrating above equation

$e^x+xy+3y+(y-1)e^y=C$

Given that

x= 0 then y= 1

$e^0+0+3+(1-1)e^1=C$

C=4

So the our final equation will be

$e^x+xy+3y+(y-1)e^y=4$

3 0

3 years ago

Mitt is a quality control inspector for a local factory. In today's inspection, Mitt found 5 defective light bulbs out of 60 ins

Otrada [13]

Answer:hahahha

Step-by-step explanation:

Ima just type to get points lol

3 0

3 years ago

Graph the line for y+1=−3/5(x−4) on the coordinate plane.

lyudmila [28]

Answer:

y=-3/5x+7/5

Step-by-step explanation:

put into slope form

Distribute the -3/5

y+1=-3/5x+12/5

subtract the one

y=-3/5x+7/5

3 0

4 years ago