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3 years ago

Help me plz very hard

Mathematics

2 answers:

notka56 [123]3 years ago

6 0

Answer:

Step-by-step explanation:

Fantom [35]3 years ago

5 0

Answer:

y=19

Step-by-step explanation:

your equation is y=6x-11 with an input of 5 so you plug in 5 for x.

% times 6 is 30 and 30 minus 11 is 19

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This parabola has x-intercepts

slega [8]

Answer:

see the explanation

Step-by-step explanation:

we have the quadratic equation

$y=-16x^{2} +32x-10$

This is a vertical parabola open downward

The vertex is a maximum

Find the x-intercepts of the quadratic equation

The x-intercepts are the values of x when the value of y is equal to zero

For y=0

$-16x^{2} +32x-10=0$

Solve the quadratic equation

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-16x^{2} +32x-10=0$

$a=-16\\b=32\\c=-10$

substitute in the formula

$x=\frac{-32(+/-)\sqrt{32^{2}-4(-16)(-10)}} {2(-16)}$

$x=\frac{-32(+/-)\sqrt{384}} {-32}$

$x=\frac{-32(+/-)8\sqrt{6}}{-32}$

$x=\frac{-32(+)8\sqrt{6}}{-32}=\frac{32(-)8\sqrt{6}}{32}=0.39\ sec$

$x=\frac{-32(-)8\sqrt{6}}{-32}=\frac{32(+)8\sqrt{6}}{32}=1.61\ sec$

therefore

This parabola has two x-intercepts representing the times when the dolphin's height above water is zero feet

8 0

2 years ago

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Car travels 177 milies in 3 hours at a constant speed. Which unit ratio represents the speed of the car?

sp2606 [1]

Answer:

59 miles per hour

Step-by-step explanation:

6 0

2 years ago

What is 3/16= c-7/8 please answer

Bingel [31]

Answer:

c=17/16

Step-by-step explanation:

3/16=c-7/8

find the common denominator

3/16=c-14/16

add 14/16 on both sides to cancel

c=17/16

7 0

3 years ago

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Two students from a group of eight boys and 12 girls are sent to represent the school in a parade.

Deffense [45]

Answer

c. 62/95

Explanation

Probability is the chance of an event happening.

Probability = (favorable outcome)/(total outcome)

P(girl) = 12/20 × 11/19

= (12×11)/(20×19)

= 132/380

= 33/95

P( not a girl) = 1 - 33/95

= 62/95

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3 years ago

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Order of operations

Marat540 [252]

Answer: d^(2) + (ab)/(c)

Step-by-step explanation:

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3 years ago

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