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lys-0071 [83]
3 years ago
11

Which ordered pair in the form (a, b) is a solution of this equation?

Mathematics
2 answers:
Alinara [238K]3 years ago
6 0
Substitute the first number in the (  ) for a and the second for b
3(-3)-4(-2)
-9+8 does not =21

B.  3(0)-4(7)
0-28 does not = 21

C.  3(-2)-4(-3)
-6+12 does not =21

D. 3(7)-4(0)= 21 yeah

answer is D (7,0)

hope this helps


allochka39001 [22]3 years ago
5 0
3(7)-4(0)=21
3*7=21-0=21
the answer is D
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Inductive Reasoning, help please :)
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5 0
4 years ago
Please help me with this homework
devlian [24]

Answer:

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Step-by-step explanation:

8 0
3 years ago
0.89879404 rounded to the nearest ten thousandths
Aleksandr-060686 [28]

Answer:

0.8988

Step-by-step explanation:

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8 0
3 years ago
The volume of a cylinder is 32.25 cubic inches. If a cone has the same height and radius as the cylinder, what is its volume?
PtichkaEL [24]

The volume of a cylinder with a radius r and a height h:

V_1=\pi r^2h

The volume of a cone with a radius r and a height h:

V_2=\dfrac{1}{3}\pi r^2h

Therefore

V_2=\dfrac{1}{3}V_1

We have V_1=32.25\ in^3

Substitute:

V_2=\dfrac{1}{3}\cdot32.25=10.75\ in^3

Answer: The volume of a cone is equal 10.75 in³

8 0
4 years ago
The sum of three numbers is 72
LekaFEV [45]

Answer: <u><em>The first number is 8</em></u>

Step-by-step explanation: Let the three No. s be x, y and z respectively

given = x+ y+ z= 72

y=7x

z=7x-18

∴As we know x+ y+ z=72

i.e. x+7x+7x-18=72

15x=72+18=90

15x=90

x=90/15

∴x=8

∴y=7x

7×8=56

∴z=7x-18

56-18=38

∴<u><em>The first no. is x=8</em></u>

<u><em>The second no. is y=7x = 56</em></u>

<u><em>The third no. is z=7x-18 = 38</em></u>

6 0
3 years ago
Read 2 more answers
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