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jeka94
3 years ago
7

On a test, wrong answers are worth -5.25 points and right answers are worth 3.5 points. So far, Marshall has one right answer an

d one wrong answer. What is Marshall's current score?
Mathematics
1 answer:
Over [174]3 years ago
8 0

Answer:

Marshall's current score is - 1.75 points

Step-by-step explanation:

From the question,

Wrong answers are worth -5.25 points and right answers are worth 3.5 points.

Currently, Marshall has one right answer and one wrong answer.

To determine Marshall's current score, we will multiply the number of right answers has by 3.5 points and multiply the number of wrong answers by -3.5 points and then add the results.

Number of right answers = 1

Number of wrong answers = 1

For the right answer, he has

1 × 3.5 points = 3.5 points

For the wrong answer, he has

1 × - 5.25 points = -5.25 points

Hence, Marshall's current score is

3.5 points + ( -5.25 points) = 3.5 points - 5.25 points

= - 1.75 points.

Hence, Marshall's current score is - 1.75 points.

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SP=2x+3, and LN=5x−14. Find SP.
dolphi86 [110]

Answer:

SP = 43 units

Step-by-step explanation:

Given question is incomplete: find the complete question in the attachment.

From the figure attached,

Length of LN = (5x - 14)

Length of SP = (2x + 3)

By the mid-segment theorem,

"Segment connecting the mid points of two sides of a triangle is parallel and half the length of the third side."

SP = \frac{1}{2}(\text{LN})

(2x + 3) = \frac{1}{2}(5x - 14)

4x + 6 = 5x - 14

5x - 4x = 14 + 6

x = 20

SP = (2x + 3)

    = (2×20) + 3

    = 43 units

Therefore, measure of SP = 43 units is the answer.

4 0
4 years ago
Use elimination to solve each system of equations.
AVprozaik [17]

2x - y = -1

3x - 2y = 1

Multiply the first equation by -2

-4x + 2y = 2

Add the new equation to the second equation

-x = 3

x = -3

Plug -3 into the first equation

2 * -3 - y = -1

-6 - y = -1

-y = 5

y = -5

8 0
3 years ago
Read 2 more answers
Find the equation of the line through (- 4, 5) which is perpendicular to the line y = x/4 - 1
iragen [17]

We conclude that the linear equation perpendicular to y = x/4 - 1 and that passes through (-4, 5) is y = -4*x - 11

<h3>How to find the perpendicular line?</h3>

A general linear equation is of the form:

y = a*x + b

Where a is the slope and b is the y-intercept.

Two lines are perpendicular if the slope of one line is equal to the inverse of the opposite of the other slope.

So, if we have:

y = x/4 - 1

The slope is a = (1/4)

The inverse of the opposite is:

a' = -4

Then the perpendicular line is of the form:

y = -4*x + c

Now we want this to pass through the point (-4, 5), then we must have:

5 = -4*-4 + c

5 = 16 + c

5 - 16 = c = -11

We conclude that the linear equation perpendicular to y = x/4 - 1 and that passes through (-4, 5) is y = -4*x - 11

If you want to learn more about linear equations:

brainly.com/question/1884491

#SPJ1

4 0
2 years ago
For the given angle measure, find the measure of a supplementary angle and the measure of a complementary angle, if possible. If
8090 [49]

Answer:

A complementary angle is 63 degrees and supplementary angle is 153 degrees.

Step-by-step explanation:

Complementary angle:

A complementary angle adds up to 90 degrees, so you have to subtract 27 from 90.  90-27=63

Supplementary angle:

A supplementary angle adds up to 180 degrees, so you have to subtract 27 from 180. 180-27=153

6 0
3 years ago
Choose all that are correct given the equation: y=1/4 x + 9 A.y=7.25 when x = -7 B.y=7 when x = -8 C.y=8.5 when x =-4 D.y=10.25
Mila [183]

Answer:

Step-by-step explanation:

4 0
3 years ago
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