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3 years ago

The volume of a suitcase is 4.2 cubic feet. What is the volume of a suitcase that is smaller by a factor of 0.9.

Mathematics

1 answer:

Mariulka [41]3 years ago

4 0

4.2 cubic feet * 0.9 = 3.78 ft^3

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Q: In an examination 14% of the students failed and 559 students passed. Find

topjm [15]

100% - 14% = 86%
86% of what gives you 559
559 * 100 = 55,900/86 = 650
650 students in total
650 - 559 = 91
Solution: 91 students failed

7 0

3 years ago

The state of Utah covers 82, 144 square miles. The state of Montana covers 145, 552 square miles. What is th3 total area of the

zalisa [80]

227,696 square miles

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3 years ago

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Please help me with this

Ne4ueva [31]

Answer:

Option c

Step-by-step explanation:

A system of equations are given to us. And we need to solve them . The given system is

$\begin{cases} y = 2x - 3\dots 1 \\ y = x^2 - 3\dots 2 \end{cases}$

We numbered the equations here . Now put the value of equation 1 in equation 2 that is substituting y = 2x - 3 in eq. 2 .

$\implies y = x^2 - 3 \\\\\implies 2x - 3 = x^2 - 3 \\\\\implies x^2 - 2x = 0 \\\\\implies x(x-2) = 0 \\\\\implies\red{ x = 0 , 2 }$

We got two values of x as 0 & 2 . Alternatively substituting these values we have ,

$\implies y = 2 x - 3 \\\\\implies y = 2(0)-3 \qquad or \qquad y = 2(2)-3 \\\\\implies y = 0-3 \qquad or \qquad 4 - 3 \\\\\implies \red{ y = -3 , 1 }$

Thefore the required answer is ,

$\red{Option\:c} \begin{cases} (0,-3) \\ (2,1) \end{cases}$

4 0

2 years ago

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Sally invests £8000 in a savings account.

lisabon 2012 [21]

Answer:

£8934.24

Step-by-step explanation:

100 + 2.8 = 102.8

102.8 / 100 = 1.028

8000 x $1.028^{4}$ = £8934.24

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2 years ago

Help with this please!!!!!!!!!!!!!!

sveta [45]

Answer:

A is the correct answer :)

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2 years ago

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