2 years ago

(PLEASE HELP I WILL GIVE BRAINLIEST IF CORRECT (40 POINTS)

Mathematics

1 answer:

Andrews [41]2 years ago

3 0

Answer:

2800 - 4000

Step-by-step explanation:

40 × 70 = 2800

50 × 80 = 4000

You might be interested in

last week breana Bowen's computer for 10% off the advertised price the advertised price was 1800 how much did Rihanna have to pa

Rina8888 [55]

She had to pay 1620 for the computer

4 0

3 years ago

No body helped me the last time so I’m posting it again I really need help with this

PIT_PIT [208]

B is equal to 154 degrees. we know this cause half of the circle equals 180 and if you subtract a (26) from 180 you get 154

3 0

3 years ago

Simplify using distributive property 4(z+2)+2(3-z)

riadik2000 [5.3K]

Answer:

2z+14

Step-by-step explanation:

you multiply

4*z =4z

4*2 =8

and then you multiply

2*3=6

2*-z=-2z

the answer is 2z+14

5 0

2 years ago

4. A catered menu is to include a soup, a main

kow [346]

Answer:

180 different menus

Step-by-step explanation:

I believe that the way you solve this question is to multiply all the numbers of choices together. The product is the answer to this question

4 0

3 years ago

Read 2 more answers

A statistics instructor believes that fewer than 20% of Evergreen Valley College (EVC) students attended the opening night midni

Alex17521 [72]

Answer: It is believed that exactly 20% of Evergreen Valley college students attended the opening night midnight showing of the latest harry potter movie.

Step-by-step explanation:

Since we have given that

n = 84

x = 11

So, $\hat{p}=\dfrac{x}{n}=\dfrac{11}{84}=0.13$

p = 0.20

So, hypothesis:

$H_0:p=\hat{p}\\\\H_a:\hat{p}$

so, test statistic value would be

$z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}\\\\z=\dfrac{0.13-0.20}{\sqrt{\dfrac{0.2\times 0.8}{84}}}\\\\z=-1.604$

At 1% level of significance, critical value would be

z= 2.58

Since 2.58>-1.604

So, We will accept the null hypothesis.

Hence, It is believed that exactly 20% of Evergreen Valley college students attended the opening night midnight showing of the latest harry potter movie.

4 0

3 years ago

Read 2 more answers