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Murrr4er [49]
3 years ago
14

Can someone help me w this question plz.

Mathematics
1 answer:
quester [9]3 years ago
6 0
For any solution it follows that y=y so:

x^2+2x=3x+20  subtract 3x from both sides

x^2-x=20  subtract 20 from both sides

x^2-x-20=0  factor...

x^2-5x+4x-20=0

x(x-5)+4(x-5)=0

(x+4)(x-5)=0

x=-4 and 5  now to find the corresponding y values I'll use y=x^2+2x

y(-4)=16-8=8 and y(5)=25+10=35  so the two solutions are the points:

(-4, 8) and (5, 35)
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Vedmedyk [2.9K]

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5 0
2 years ago
use the diagram to find the distance across the suspension bridge. Round your answer to the nearest foot
3241004551 [841]

Applying the tangent ratio, the distance across the suspension bridge is: 499.2 ft.

<h3>What is the Tangent Ratio?</h3>

Where we are given a right triangle, the tangent ratio is determined using the formula, tan ∅ = opposite side/adjacent side.

The diagram atatched beow whos the distance across the suspension bridge which consists of 6 identical right triangles.

Find the adjacent side of each right triangle using the tangent ratio:

∅ = 32

Opposite side = 52 ft

Adjacent side = x

Plug in the values into the tangent ratio:

tan 32 = 52/x

x = 52/tan 32

x = 83.2 ft.

Distance across the suspension bridge = 6(83.2) = 499.2 ft.

Therefore, applying the tangent ratio, the distance across the suspension bridge is: 499.2 ft.

Learn more about the tangent ratio on:

brainly.com/question/4326804

7 0
2 years ago
An entrepreneur faces many bureaucratic and legal hurdles when starting a new business. The World Bank collects information abou
slamgirl [31]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the data :

Rearranged data:

5, 5, 5, 5, 6, 7, 7, 7, 8, 12, 12, 13, 13, 15, 18, 18, 27, 28, 36, 48, 52, 60, 66, 94

Start time for Suriname = 694

Mean = ΣX / n

Mean = (567 + 694) / (24 + 1) = 1261 / 25 = 50.44

B.) median start Time for initial 24 values

0.5(n+1)th term

0.5(25) = 12.5th term

(13 + 13) / 2 = 13

C.) preferred measure of center for the distribution will be the median as it shapes well in the middle of the distribution. The mean is overestimated

d) Compute the quartiles (Q1, Q2, Q3), and find the IQR for these data. Are there outliers in the time to start a business data set? If so, identify and name any outliers.

Using calculator :

Lower quartile Q1 --> 7

Median Q2 --> 13

Upper quartile Q3 --> 42

IQR = (Q3 - Q1) = 42 - 7 = 35

OUTLIER:

Lower bound : Q1 - 1.5(IQR) ; 7 - 1.5(35) = - 45.5

Upper bound : Q3 + 1.5(IQR) = 42 + 1.5(35) = 94.5

Outlier : values below - 45.5 and above 94.5

Hence, Surimanes start time is the only Outlier.

e)

Standard deviation for 24 countries :

Standard deviation = sqrt[Σ(X - mean)^2 / (N - 1)]

Usibg calculator :

Standard deviation for the 24 countries is 23.83

f)

Standard deviation

5 0
2 years ago
How can victoria justify step 3 of her work
Wittaler [7]
A little more info please?
4 0
3 years ago
Read 2 more answers
A parachutist jumped from an airplane at an elevation of 11,880 feet above the ground.
Vika [28.1K]

Answer:

[D] -552.5 feet

Step-by-step explanation:

You have to multiply 5 by -110.5

Hence, Answer = -552.5 feet

[RevyBreeze]

5 0
2 years ago
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