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777dan777 [17]
3 years ago
12

2x2-3 evaluate each expression. Show your work

Mathematics
1 answer:
nirvana33 [79]3 years ago
5 0

Answer:

1

Step-by-step explanation:

2x2 = 4

4-3=1

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I need help answering these questions, methods appreciated on how to do each one.
xxMikexx [17]

Answer:

get rickrolled

Step-by-step explanation:

4 0
2 years ago
to build the garden of your dreams you need 11 m^3 of coil containing 46% clay. you have two types of soil you can combine to ac
aivan3 [116]

Answer: 9m^3 of soil with 50% clay and 2m^3 of soil with 28% clay is required

Step-by-step explanation:

Let x represent the quantity of the soil containing 50% clay that you would use.

Let y represent the quantity of the soil containing 28% clay that you would use.

To build the garden of your dreams you need 11 m^3 of soil.

x + y = 11 - - - - - - - - -1

Since the soil must contain 46% clay, the total amount of clay required is 46/100 × 11 = 5.06 m^3.

you have two types of soil you can combine to achieve this: soil with 50% clay and soil with 28% clay. This means that the quantity of both soils required to achieve 5.06 m^3 will be

0.5x + 0.28y = 5.06 - - - - - - - -2

Substituting x = 11 - y into equation 1, it becomes

0.5(11 - y) + 0.28y = 5.06

5.5 - 0.5y + 0.28y = 5.06

- 0.5y + 0.28y = 5.06 - 5.5

- 0.22y = - 0.44

y = - 0.44/ -0.22 = 2

Substituting y = 2 into x = 11 - y, it becomes

x = 11 - 2 = 9

7 0
3 years ago
2. If 8.67 is rounded to tenth, 8.67 becomes<br>A. 8.00<br>B. 8.7<br>C. 8.60<br>D. 86.0<br>2.64​
andrey2020 [161]

Answer:

b. 8.7

Step-by-step explanation:

7 rounds up turning the 6 besides it into a 7.

4 0
3 years ago
Read 2 more answers
What's the value of 2<br><img src="https://tex.z-dn.net/?f=2%5Cpi" id="TexFormula1" title="2\pi" alt="2\pi" align="absmiddle" cl
Oduvanchick [21]
The answer is 6.28318530718.

2 x pi (3.14159 etc.,) equals 6.28318530718...
6 0
2 years ago
the label on the bottle of vitamin says that each capsule contain 0.5 grams. when check each capsule had 0.505 grams. was that t
Diano4ka-milaya [45]

Answer:

0.505 g is <em>more than</em> the advertised amount by 0.005 g.

Step-by-step explanation:

0.5 = 0.500, so 0.505 is <em>more than</em> the advertised amount.

"Too little" or "too much" is a judgment based on some criteria not specified by the problem statement. Usually a supplier will want to ensure the customer receives full measure, so will adjust the capsule-making machine to provide at least the advertised amount. Whether it is "too little" or "too much" depends on your point of view and the dangers or costs of deviating from the advertised amount.

0.505 - 0.500 = 0.005 . . . . the difference between the actual and advertised amounts, in grams.

8 0
3 years ago
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