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4 years ago

Heeelpppp please I’ll give 20 points

Mathematics

1 answer:

Cloud [144]4 years ago

3 0

Answer:

i think it is B

Step-by-step explanation:

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URGENT !!!!!!! Please answer correctly !!!!!!!!!!!! Will be marking Brianliest !!

brilliants [131]

Answer:

A=79.2 $in^{2}$

Step-by-step explanation:

A=a+b/2*h

A=5.4+14.4/2*8

A=19.8/2*8

A=9.9*8

A=79.2

6 0

3 years ago

For three consecutive years, Sam invested some money at the start of the year. The first year, he invested x dollars. The second

nikitadnepr [17]

Year Sam Sally1: X (3/2)X-10002: (5/2)X-2000 2X-15003: X/5+1000 X/4+1400Total 37X/10-1000 15X/4-1100
Since their investments are known to be equal, we equate the two totals and solve for X.37X/10-1000=15X/4-1100(150-148)X/40 = 1100-1000X/20=100X=2000
So Sam invested $2000 the first year.Sally invested X/4+1400=1900 in the last year.

6 0

3 years ago

How do you solve this?

Jet001 [13]

Answer:

There are 8 boys in the chorus and 16 girls in the chorus

The graph in the attached figure

Step-by-step explanation:

Let

x----> the number of boys

y----> the number of girls

we know that

$y=2x$ -----> equation A

$x=y-8$ ----> equation B

Solve the system of equations by graphing

Remember that the solution of the system of equations is the intersection point both graphs

The solution is the point (8,16)

see the attached figure

therefore

There are 8 boys in the chorus

There are 16 girls in the chorus

6 0

4 years ago

Please help me! <br> Will give brainlst :)

sergey [27]

Answer:

12. 6.4

13. 20

Step-by-step explanation:

This is the Pythagorean theorem, which says a^2+b^2=c^2. So for problem 12 we have 4^2+5^2=c^2. Since, 16+25=41, c=sqrt41 which is about 6.4. For problem 13 we have 15^2+b^2=25^2. Since 25^2-15^2=400, b=sqrt400 which is 20. Hope this helps!

8 0

3 years ago

Read 2 more answers

Find the z-scores that delineate the middle 96% of all values from the others. enter your answers to 2 or 3 decimal places. from

scZoUnD [109]

The z-score that delineates the middle 96% of all vallues from others is obtained as follows.

$100(1-\alpha)\%=96\% \\ \\ 1-\alpha=0.96 \\ \\ \alpha=1-0.96=0.04 \\ \\ \alpha/2=0.04\2=0.02 \\ \\ z_{0.02}=2.054$

Therefore, <span>the z-scores that delineate the middle 96% of all values from the others</span> is 2.05

4 0

3 years ago