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2 years ago

Lola scored 21 out of 27 points on a mid-unit quiz in math. Later she scored 66 points out of 80 on the unit test.

Mathematics

2 answers:

MrRissso [65]2 years ago

6 0

Lola increase her scoring from the quiz to the test

RSB [31]2 years ago

3 0

Answer:

Increased on the test more than the quiz

Step-by-step explanation:

If we do 21/27, we get 0.77777777777, as a percent, 0.77.

Then we do 66/80, and get 0.825, as a percent, 0.82.

We can already tell that she did better on the test, than the quiz.

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Express with radical signs instead of fractional exponents. Rationalize the denominator.

CaHeK987 [17]

$x^{\frac{1}{2}} = \sqrt[2]{x}$ and $3^{-\frac{1}{2}} = \frac{1}{3^{\frac{1}{2}} } = \frac{1}{\sqrt[2]{3}}$ so

$3^{-\frac{1}{2}} x^{\frac{1}{2}} = \frac{1}{\sqrt{3}} \cdot \sqrt{x} = \frac{\sqrt{x}}{\sqrt{3}}$

and you rationalize denominator by multiplying numerator and denominatr by $\sqrt{3}$ so that gives--

$\frac{\sqrt{x}}{\sqrt{3}} \cdot \frac{\sqrt{3}}{\sqrt{3}} = \frac{\sqrt{3x}}{3}$

Your answer is $\frac{\sqrt{3x}}{3}$

5 0

3 years ago

Someone please help

Talja [164]

Answer:

yes, it passes through the origin and has a 1 slope.

the car traveled 100 miles in 2 hours.

the car traveled 250 miles in 5 hours.

the car traveled 50 miles in 1 hour.

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

-43x - 121 = 0. Type ONLY THE NUMBER for the answer!!

Elza [17]

Answer:

Step-by-step explanation:

The answer is -2.81

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7 0

2 years ago

PQRS is a square. find the value of x and y.

Ivan

Answer:

x = 7

y = 3/2 or 1.5 (IF THE ANGLE IS 30 BY THE RATIOS OF A RIGHT TRIANGLE.)

hope it's right

Step-by-step explanation:

FOR X:

Let's solve your equation step-by-step.

4x+3=31

Step 1: Subtract 3 from both sides.

4x+3−3=31−3

4x=28

Step 2: Divide both sides by 4.

4x/4=28/4

x=7

FOR Y:

Step 1: Simplify both sides of the equation.

(3)(7)+6y=30

21+6y=30

6y+21=30

Step 2: Subtract 21 from both sides.

6y+21−21=30−21

6y=9

Step 3: Divide both sides by 6.

6y/6=9/6

y=3/2

3 0

3 years ago

1. the shape is a parallelogram. what is the measure of KL?

aleksklad [387]

Answer:

1. KL = 29

2. angle J = 127 degree

3. angle of K = 53 degrees

Step-by-step explanation:

SInce it is a parrallelograme, one thing that will help you is to remember that opposits are the same.

1. KL = JM since they are opposite => KL = 29

2. angle J = angle L since they are opposite => angle J = 127 degrees

3. Since we know that angle J and L are both equal to 127 degree and since the sum of the angles of a parralelogram is 360 degrees, so the sum of the angles of K and M is: 360 - 127 - 127 = 106 degrees.

Since K's and M's angles are equale => 106 / 2 = 53 degrees.

8 0

2 years ago