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nalin [4]
3 years ago
10

Help please it's math 15 pts!

Mathematics
2 answers:
blsea [12.9K]3 years ago
7 0

Answer:

i believe its d

Step-by-step explanation:

disa [49]3 years ago
6 0

Answer:

divide miles per 1 hour

Step-by-step explanation:

example:

miles=2

hours=4

divide 2 and 4

answer: 0.5 or 1/2 or 2/4

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6. Using the discriminant, determine the value of k that will give 1 solution (i.e. discriminant equals zero) y = kx²-4x + 4 ​
Gwar [14]

Answer:

k = 1

Step-by-step explanation:

<u>Discriminant</u>

b^2-4ac\quad\textsf{when }\:ax^2+bx+c=0

\textsf{when }\:b^2-4ac > 0 \implies \textsf{two real roots}

\textsf{when }\:b^2-4ac=0 \implies \textsf{one real root}

\textsf{when }\:b^2-4ac < 0 \implies \textsf{no real roots}

As we need to determine the value of k that will give <u>one solution</u>, set the <u>discriminant to zero</u>.

<u>Given equation</u>:

y=kx^2-4x+4

Therefore:

  • a = k
  • b = -4
  • c = 4

Substitute these values into the discriminant and solve for k:

\begin{aligned}b^2-4ac & = 0\\\implies (-4)^2-4(k)(4) & = 0\\16-16k & = 0\\16k & = 16\\\implies k & = 1\end{aligned}

4 0
2 years ago
8) Eugene wrote a riddle: A positive number is 5 less than another positive number. Six times the lesser number minus 3 times th
Gala2k [10]

Answer: the two numbers are 6 and 11.

Set up the individual equation according to the verbal statements:

<em>A positive number is 5 less than another positive number:</em>

a = b - 5       (this also implies that a<b)

<em>Six times the lesser number minus 3 times the greater number is 3. </em>

6  a -3 b = 3

<em>Find the two positive numbers.</em>

This is a system of linear equations - solve for a and b:

<em>6(b-5)-3b=6b-30-3b=3b-30=3\\3b=33\\b=11\\\rightarrow a=11-5 = 6</em>

3 0
3 years ago
Find the measure of the angle indicated
Grace [21]

Answer:

86

Step-by-step explanation:

y + 28 + 58 = 180

y + 86 = 180

y = 180 - 86

y = 94

x + y = 180

x + 94 = 180

x = 180 - 94

x = 86

6 0
3 years ago
Juan and Carlos have Walked 3/4 mile and are 2/3 the distance around Fort Meade. What is the distance around Fort Meade?
Wewaii [24]
1 and 1/8 miles. 1/3 is 3/8 of a mile. This 3/3 is 9/8 miles
4 0
4 years ago
Read 2 more answers
Which equation, in point-slope form, represents a line with m= -4/7 that goes through the point (-1, 4)?
Gelneren [198K]
A is the correct answer.

Point Slope Form: y - y₁ = m(x - x₁)

m = slope ⇒ -4/7
Coordinate: (-1  ,  4)
                       x₁    y₁

All you have to do is plug in all of the information above into the formula.

y - 4 = -4/7(x +1)


4 0
3 years ago
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