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3 years ago

15

Lena took a test with 20 questions. She lost 5 points for each of the 12 questions she got incorrect, however, gained 20 points

for answering all the bonus questions correctly. How many points did Lena lose overall?

1 answer:

Makovka662 [10]3 years ago

6 0

Answer:

17

Step-by-step explanation:

You might be interested in

Rich is driving from Philadelphia to Pittsburgh at 70 mph and Michelle is driving from Pittsburgh to Philadelphia at 65 mph. If

nignag [31]

The answer is C. 2 hours and 15 minutes. Please refer to the attached document to see the image for better understanding of solution.

Philadelphia = Point A
Pittsburgh = Point B
X = distance traveled by Michelle
(305-X) = distance traveled by Rich

The general formula used is:

$distance = velocity(time)$
$s = v(t)$

Assigning values gives 2 equations:

For Michelle: $X = 65(t)$
For Rich: $(305-X) = 70(t)$

Substituting both equations gives:

X = 146.852 miles
t = 2.26 hours or approximately 2 hours and 15 minutes

8 0

3 years ago

Star Wars land encompasses an area of 14.0 acres. [1.00 acre = 4046.86m2]. If Star Wars land were made into a circle, what would

Free_Kalibri [48]

Answer:

<h3>The answer is 134.29 m</h3>

Step-by-step explanation:

First of all we need to convert 14.0 acres to m²

1.00 acre = 4046.86 m²

14.0 acres = 14 × 4046.86 = 56656.04 m²

Area of a circle = πr²

where

r is the radius

To find the radius substitute the value for the area into the above formula and solve for the radius

That's

$56656.04 = \pi {r}^{2}$

Divide both sides by π

We have

${r}^{2} = \frac{56656.04}{\pi}$

Find the square root of both sides

$r = \sqrt{ \frac{56656.04}{\pi} }$

r = 134.29139

r = 134.29 m to 2 decimal places

Hope this helps you

3 0

2 years ago

Sam bought 2 1/4 pounds of Swiss cheese and 1 1/2 pounds of cheddar at the deli. How many pounds of cheese did Sam buy altogethe

DerKrebs [107]

2 1/4 + 1 1/2

2 + 1 = 3
1/4 + 1/2 = 1/4 + 2/4 = 3/4

so ur answer is 3 3/4 lbs of cheese in total

8 0

3 years ago

WILL GIVE BRAINLIEST!

Talja [164]

Answer:

100

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

The measure of the supplement of an angle is 84° less than the measure of the angle. Find the measures of the angles

babunello [35]

Let the measure of angle be 'x'

Since, the measure of the supplement of an angle is 84° less than the measure of the angle.

Therefore, measure of supplement of x = x - 84°

The measure of two supplementary angles is 180 degrees.

$x + x -84^\circ = 180^\circ$

$2x -84^\circ = 180^\circ$

$2x =84^\circ + 180^\circ$

$2x =264^\circ$

$x =132^\circ$

So, the measure of angle = $x =132^\circ$

Its supplement = x - 84° = 132° - 84°

= 48°

So, the measure of supplement of angle is 48 degrees.

6 0

3 years ago