1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
erastova [34]
3 years ago
9

Help meeeeeee!!!!!!!!!!

Mathematics
1 answer:
Soloha48 [4]3 years ago
6 0
T-m=25
3m=J
275=t+j+m
Matt spent 50 dollars
Jeff spent 150
and Tim spent 75

You might be interested in
Ignacio is going on vacation. He needs to drive 520 miles in 8 hours. What is his average speed in miles per hour?​
Gnom [1K]

Answer:

65 miles per hour

Step-by-step explanation:

520 divided by 8

8 0
2 years ago
Read 2 more answers
Which expression is equivalent to -7(y-2)
soldi70 [24.7K]

Hello!

Distributive property: a(b+c)=ab+ac

a=-7, b=y, c=2

-7y-(-7)*2

Minus and plus sign.

-7y+7*2

Then multiply by the numbers.

7*2=14

\boxed{=-7y+14}

Hope this helps!

Thanks!

Have a great day!

5 0
3 years ago
Joe sold a total of 10 baked goods. Each cookie costs $1.25 and each brownie costs $2.50. Joe made $20 at the bake sale. How man
AURORKA [14]

Answer:

4 cookies

Step-by-step explanation:

Let the number of cookies he sold be c and that of brownies be b.

Assuming that brownies and cookies are the only type of baked goods sold,

b +c= 10 -----(1)

Amount of money received= $20

b(cost of brownie) +c(cost of cookie)= $20

2.50b +1.25c= 20 -----(2)

From (1): b= 10 -c -----(3)

Substitute (3) into (2):

2.50(10 -c) +1.25c= 20

Expand:

2.50(10) +2.50(-c) +1.25c= 20

25 -2.50c +1.25c= 20

-1.25c +25= 20

Being constants to 1 side:

-1.25c= 20 -25

-1.25c= -5

c= -5 ÷(-1.25)

c= 4

Thus, Joe sold 4 cookies.

8 0
2 years ago
jack donates $X per month to charity. Ta the end if 10 months, he had 1250 donated in total. How much did he donate each month
AnnZ [28]

Answer:

He donated $125 per month.

Step-by-step explanation:

$1250 divided by 10 months to figure out how much he payed each month.

4 0
3 years ago
NarStor, a computer disk drive manufacturer, claims that the median time until failure for their hard drives is more than 14,400
Ne4ueva [31]

Answer:

The test statistics is  t  =  -1.727

Step-by-step explanation:

From the question we are told that

The data given is  

   330 620 1870 2410 4620 6396 7822 81028309 12882 14419 16092 18384 20916 23812 25814

 The population mean is  \mu  =  14400

    The  sample  size is  n =  16

  The  null hypothesis is  \mu \le  14400

    The  alternative hypothesis is  H_a  :  \mu > 14400

The sample mean is mathematically evaluated as

  \= x  =  \frac{\sum x_i}{n}

So

   \= x  =  \frac{330+ 620+ 1870 +2410+ 4620+ 6396+ 7822+ 8102+8309+ 12882+ 14419+ 16092+ 18384 +20916+ 23812+ 25814 }{16}

=>  \= x = 10799.9

The  standard deviation is mathematically represented as

      \sigma =\sqrt{\frac{ \sum (x_i - \=x)^2}{n}}

So

\sigma =\sqrt{\frac{(330- 10799.9)^2 + (620- 10799.9)^2+ (1870- 10799.9)^2 +(2410- 10799.9)^2 + (4620- 10799.9)^2 +(6396- 10799.9)^2 +(7822- 10799.9)^2 }{16}}  \ ..

   ..\sqrt{ \frac{(8102 - 10799.9)^2 +(8309 - 10799.9)^2 + (12882 - 10799.9)^2 + (14419 - 10799.9)^2 + (16092 - 10799.9)^2 + (18384 - 10799.9)^2 +(20916 - 10799.9)^2  }{16}} \ ...

  \ ... \sqrt{\frac{(23812 - 10799.9)^2 +(25814 - 10799.9)^2 }{16}}

=>  \sigma  =  8340

  Generally the test statistic is mathematically represented as

  t =  \frac{10799.9- 14400}{ \frac{8340}{\sqrt{16} } }

t  =  -1.727

From the z-table  the p-value is  

     p-value  = P(Z > t) =  P(Z >  -1.727) =  0.95792

 From the values obtained we see that

        p-value  >  \alpha  so we fail to reject the null hypothesis

Which implies that the claim of the NarStor is wrong

5 0
3 years ago
Other questions:
  • You are leaving for a party at your cousin’s house in a city that is 150 km away. You will travel at an average rate of 50 km/hr
    14·2 answers
  • write the equation of the line, in standard form, that has an x-intercept of 2 and is parallel to 2x+y=-5. include your work in
    8·2 answers
  • What is the value of y in the equation 2(2y − 16) = 0?
    9·2 answers
  • The sum of three consecutive integers is 9.
    14·1 answer
  • Can someone answer this question please WBA’s wee it correctly if it’s correct I will mark you brainliest
    11·1 answer
  • K - 4 > -3 inequality
    5·1 answer
  • After the party, 3 1⁄4 pecan pies remained. The next day, Edward's family ate 1 1⁄4 of a pie. How many pecan pies were left?
    6·2 answers
  • The points Q, R, S and T all lie on the same line segment, in that order, such that the ratio of Q R : R S : S T QR:RS:ST is equ
    8·1 answer
  • If an event is unlikely to occur , the probability is between ___ and ___ on the probability spectrum .
    7·1 answer
  • QUICK PLEASE. Calculate the final amount if $10 000 invested for 6 years at 4% compounded quarterly.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!