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Free_Kalibri [48]
3 years ago
10

In a class of 30 students, 22 study physics (P) and 19 study chemistry. What is the number of students who study both physics an

d chemistry?​
Mathematics
1 answer:
Ket [755]3 years ago
4 0

Answer:

11

Step-by-step explanation:

22+19=41

41-30=11

22 study physics, 19 study chemistry and 11 study both

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If an angle of 1 isosceles triangle is congruent to an angle of another isosceles triangle the triangles are similar. sometimes If the corresponding sides of 2 similar triangles are in a ratio of 3:4 then the there perimeters are in a ratio of 3:4. brainlist

Step-by-step explanation:

7 0
3 years ago
f the price charged for a candy bar is​ p(x) cents, where p (x )equals 162 minus StartFraction x Over 10 EndFraction ​, then x t
andreev551 [17]

Answer:

a. 1620-x^2

b. x=810

c. Maximum value revenue=$656,100

Step-by-step explanation:

(a) Total revenue from sale of x thousand candy bars

P(x)=162 - x/10

Price of a candy bar=p(x)/100 in dollars

1000 candy bars will be sold for

=1000×p(x)/100

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x thousand candy bars will be

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=10p(x)*x

=10(162-x/10) * x

=10( 1620-x/10) * x

=1620-x * x

=1620x-x^2

R(x)=1620x-x^2

(b) Value of x that leads to maximum revenue

R(x)=1620x-x^2

R'(x)=1620-2x

If R'(x)=0

Then,

1620-2x=0

1620=2x

Divide both sides by 2

810=x

x=810

(C) find the maximum revenue

R(x)=1620x-x^2

R(810)=1620x-x^2

=1620(810)-810^2

=1,312,200-656,100

=$656,100

7 0
3 years ago
Which statement is correct about the product of ​423​ and ​78​?
lions [1.4K]

A. Is the answer...

Yes yes yes yes yes

8 0
2 years ago
Read 2 more answers
Can you help me please I need it as soon as possible :)<br><br> Due today!!
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Answer:

The name of the solid is cylinder.

Step-by-step explanation:

Draw a circle on top and another one on the bottom. Then draw 2 verticle lines so that your figure is a cylinder

4 0
2 years ago
Look at attachment below
Romashka [77]
I think it’s 8/55=4/x
So it’s 8x=4(55)
8x=220
x=220/8
x=27.5
4 0
3 years ago
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