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alexdok [17]
4 years ago
10

Which expression means the same as 3 x 3/4?

Mathematics
1 answer:
Svetllana [295]4 years ago
4 0
Answer: 3x3/4=(3x3)/(1x4)

Explain: Because if you break up the expression, 3/4=3 divided by 4, then the expression will become 3x3 divided by 4( or 3x3/4)

3x3/4=9/4=2.25

•(3x3)/(1x4)=9/4=2.25
•(3x1)/(3x4)=3/12=0.25
•(3/1)x(4/3)=3x1.333=3.999
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If the triangle is 69 degrees and 90 degrees and the adjacent side is 3 cm and the opposite side is y cm what would the hypotenu
Nimfa-mama [501]

Answer:

123

Step-by-step explanation:

3 0
4 years ago
A spinner has 3 red spaces, 5 white spaces, and 1 black space. If the spinner is
Pie

Answer:

\frac{2}{3}

Step-by-step explanation:

If we have 3 red spaces, 5 white spaces, and one blank space, there are a total of 9 spaces.

Since there are 3 red spaces, there is a \frac{3}{9} = \frac{1}{3} chance of getting a red. However, the question asks the probability of not getting a red, so the chances of not getting a red are 1 -\frac{1}{3} = \frac{2}{3}.

Hope this helped!

3 0
3 years ago
The perimeter of a rectangle is 52 cm. If its width is 2 cm more than one-third of its length, find the dimensions of rectangle.
Jobisdone [24]

Answer:

(B) 18 cm x 8 cm

Step-by-step explanation:

let the length be x,

then the width is \frac{1}{3}x + 2

2( \frac{1}{3}x + 2 + x ) = 52

\frac{1}{3}x + 2 + x  = 26

\frac{4}{3} x = 24

x = (24*3)/4

x = 18

then the length is 18 cm

and width is (1/3)*18 + 2 = 8

Therefore the dimensions are length:width = 18 cm : 8 cm

7 0
2 years ago
Read 2 more answers
The perimeter of a rectangle billboard is 60 feet and has a length 6 feet longer than its width. Find the dimensions of the bill
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x-width\\x+6-length\\\\2x+2(x+6)=60\\\\2x+2\cdot x+2\cdot6=60\\\\2x+2x+12=60\\\\4x+12=60\ \ \ \ /-12\\\\4x=48\ \ \ \ /:4\\\\x=12\ (ft.)\\\\x+6=12+6=18\ (ft.)\\\\Answer:18ft.\ \times\ 12ft.
5 0
3 years ago
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A quality control engineer is interested in estimating the proportion of defective items coming off a production line. In a samp
fenix001 [56]

Answer:

The lower bound of a 99% C.I for the proportion of defectives = 0.422

Step-by-step explanation:

From the given information:

The point estimate = sample proportion \hat p

\hat p = \dfrac{x}{n}

\hat p = \dfrac{55}{100}

\hat p = 0.55

At Confidence interval of 99%, the level of significance = 1 - 0.99

= 0.01

Z_{\alpha/2} =Z_{0.01/2} \\ \\ = Z_{0.005} = 2.576

Then the margin of error E = Z_{\alpha/2} \times \sqrt{\dfrac{\hat p(1-\hat p)}{n}}

E = 2.576 \times \sqrt{\dfrac{0.55(1-0.55)}{100}}

E = 2.576 \times \sqrt{\dfrac{0.2475}{100}}

E = 2.576 \times0.04975

E = 0.128156

E ≅ 0.128

At 99% C.I for the population proportion p is: \hat p - E

= 0.55 - 0.128

= 0.422

Thus, the lower bound of a 99% C.I for the proportion of defectives = 0.422

6 0
3 years ago
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