mantooth

18.10.2020 • 

Mathematics

Can someone pls help me I will give u brainliest if you do 1. A 100-point test has x questions worth 2 points apiece and y questions worth 4 points apiece.

a. Write an equation that describes all possible numbers of questions that may be on the test.

b. If you have 24 questions worth 4 points apiece, how many questions will be worth 2 points apiece?

Ответ:

Shu11

04.02.2022

Mathematics

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a. 2x+4y=100

b. 2 questions

Step-by-step explanation:

For a, you can write out hat equation, which can test if a specific combination will work, and once you have one variable, you can solve another

For b, you can plug 24 into the equation

2x+4(24)=100

2x+96=100

2x=4

x=2

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Ответ:

s237200

30.09.2021

Mathematics

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We know that there are 5 x 10^6 red blood cells in 1 mm^3 of Avi`s blood. And 1 liter = 1 x 10^6 mm^3.
There are E red blood cells in 1 liter of his blood.
E = 5 x 10^6 x 1 x 10^6 

E = 5 x 10^12 blood cells ( or : 5,000,000,000,000 ).

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