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3 years ago

552 is 69% of what amount

Mathematics

1 answer:

bezimeni [28]3 years ago

7 0

Answer:800

Step-by-step explanation:

Given a percentage, convert to decimal and put it over 100. (69/100)

Then we perform "cross multiplication" where we try to find our b if (a/b = c/d [and our c/d is our percentage*]).

So ([552]/b)= (69/[100])

We obtain (ad/b) = c, which is (55200/b)=69.

We then divide ad by our c, (55200/69=800), our b=800.

Therefore, 552 is 69% of 800.

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WORTH 20 POINTS HELP

vfiekz [6]

Below represents the proof that the quadrilateral QRST is a parallelogram

<h3>How to prove that QRST is a parallelogram?</h3>

The coordinates are given as:

Q = (-1,-1)

R = (2,9)

S = (-4,5)

T = (-7,-5)

Calculate the length of each side using:

$d = \sqrt{(x_2 -x_1)^2 + (y_2 -y_1)^2}$

So, we have:

$QR = \sqrt{(-1 - 2)^2 + (-1 -9)^2} = \sqrt{109}$

$RS = \sqrt{(-4 - 2)^2 + (5 - 9)^2} = \sqrt{52}$

$ST = \sqrt{(-7 + 4)^2 + (-5 - 5)^2} = \sqrt{109}$

$TQ = \sqrt{(-7 + 1)^2 + (-5 + 1)^2} = \sqrt{52}$

The above computations show that opposite sides are equal.

Next, we determine the slope of each side using:

$m = \frac{y_2 -y_1}{x_2 -x_1}$

So, we have:

$QR = \frac{9 + 1}{2 + 3} = \frac{10}3$

$RS = \frac{5-9}{-4 - 2} = \frac{2}3$

$ST = \frac{5+5}{-4 + 7} = \frac{10}3$

$TQ = \frac{-5+1}{-7 + 1} = \frac{2}3$

The above computations show that opposite sides are parallel, because they have equal slope

Hence, the quadrilateral QRST is a parallelogram

Read more about parallelograms at:

brainly.com/question/3050890

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6 0

2 years ago

Lin and Andre start walking toward each other at the same time from opposite ends of a 22 mile walking trail. I am to lazy to ty

notka56 [123]

Answer:

2 hours- 5 miles, 6 miles, 13 miles

3 Hours- 7.5, 9, 9.5

4 hours- 10, 12, 6

Step-by-step explanation:

I think it might be wrong but I did my best sorry!

4 0

3 years ago

Read 2 more answers

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vladimir2022 [97]

Answer:

1) m=2/9; y-intercept= 17/3

2) m=7 ; y-intercept= 22

3) m= -2/11 ; y-intercept= 100/11

4) m= 13/19 ; y-intercept= -53/13

Step by Step Explanation:

Use the slope formula to find the slope m.

6 0

3 years ago

Solve for z. z12≤3 z≥36 z≤36 z≥4 z≤4

erastova [34]

Answer:

Your answer is correct... it's no.3 ... but if you multiply a inequality by a negative value the inequality sign changes.. like if you habe greater than it'll be less than... Keep that in mind too

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3 years ago

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Using the standard normal distribution tables, the area under the standard Normal curve corresponding to -0.5 < Z < 1.2 is

inysia [295]

Answer:

D) 0.5764.

Step-by-step explanation:

According to a standard z-score table, a z-score of -0.5 corresponds to the 0.3085-th percentile of a standard normal distribution.

Furthermore, a z-score of 1.2 corresponds to the 0.8849-th percentile of a standard normal distribution.

Therefore, the area under the standard Normal curve corresponding to -0.5 < Z < 1.2 is:

$A = 0.8849-0.3085\\A=0.5764$

The answer is option D) 0.5764.

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3 years ago