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4 years ago

A student taking a test consisting of 10 questions is told that

Mathematics

1 answer:

erica [24]4 years ago

3 0

Answer:

96 points

Step-by-step explanation:

Because each question is worth more than the previous one, a student would obtain the highest score answering only 8 questions by skipping the first two and answering questions 3-10. Question 3 is worth 5 points and each question is worth 2 more points than the previous one, so if you got questions 3-10 right you'd get 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 = 96 points.

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What is the slope of the line that passes through the points (10, -6)(10,−6)

BARSIC [14]

Answer:

Undefined

Step-by-step explanation:

The formula for slope is $m=\frac{y2-y1}{x2-x1}$

So use the x's and y's from the given points to solve for the slope

(10, -6) (10, -6)

$m=\frac{-6 - (-6)}{10-10}$

$m=\frac{0}{0}$

The slope for this line would be undefined because a number cannot be divided by 0

5 0

3 years ago

Please help!!

BlackZzzverrR [31]

Answer:

Step-by-step explanation:

edu 2020

8 0

3 years ago

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Abigail tosses a coin off a bridge into the stream below. The distance, in feet, the coin above the water is modeled by the equa

melomori [17]

Answer:

7 seconds

Step-by-step explanation:

Distance of the coin above the water is modeled by the equation

$y=-16x^2+96x+112$

where $x$ is time taken to cover the distance

Now equating with zero.

$0=-16x^2+96x+112\\\Rightarrow 16x^2-96x-112=0\\\Rightarrow x=\dfrac{-\left(-96\right)\pm \sqrt{\left(-96\right)^2-4\times \:16\left(-112\right)}}{2\times \:16}\\\Rightarrow x=7, -1$

So, time taken by the coin to hit the water is 7 seconds.

6 0

3 years ago

Use the order of operations to evaluate the expression 4×(3/4 - 1/2) +3×6

jekas [21]

Answer:

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Step-by-step explanation:

Step 1: Define

4 × (3/4 - 1/2) + 3 × 6

Step 2: Evaluate

(Parenthesis) Subtract: 4 × 1/4 + 3 × 6
Multiply: 1 + 3 × 6
Multiply: 1 + 18
Add: 19

4 0

3 years ago

Is 49 + –56 positive or negative?

katen-ka-za [31]

Answer:

-7. negative

Step-by-step explanation:

49 + -56

49 - 56

-7

4 0

4 years ago