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2 years ago

PLZ HELP. MATH TEST PICK ABC OR D !

Mathematics

2 answers:

rodikova [14]2 years ago

7 0

Answer:

Step-by-step explanation:

the lines cross the x-axis at -1 and 3 therefore its x=-1 and x=3

Finger [1]2 years ago

3 0

Answer:

B. x = -1 and x = 3

Step-by-step explanation:

The zeros of a quadratic function are where the lines insect the x-axis. This means that the y value will always be 0 and the x value will be any real number

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Which of the following are valid probability distributions for a discrete random variable

Radda [10]

All of them except B and C. Probabilities must add to 1 and none of the p's can be negative

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3 years ago

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$2.50 per square foot. how much is that per square yard?

horrorfan [7]

1 yard is 3ft, so just multiply 2.5 with 3 and that gives u 7.5.

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3 years ago

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Which mathematical symbol would best fill in the blank to compare the two real numbers?√7_14/5

miss Akunina [59]

Answer:

√7 is less than 14/5

Step-by-step explanation:

√7 equals about 2.6

14/5 equals 2.8

6 0

3 years ago

For function of g,g(0)=1 and g(1)=5 assuming g is a linear function what is g(3)<br>

lawyer [7]

Answer:

$g(3) = 13$

Step-by-step explanation:

Given

$g(0) = 1$

$g(1) = 5$

Required

Find g(3)

Since g(x) is a linear function, then:

$g(x) = mx + c$

For: $g(0) = 1$

$g(x) = mx + c$

$g(0) = m*0 + c$

$1 = 0 + c$

$1 = c$

$c = 1$

For: $g(1) = 5$

$g(x) = mx + c$

$g(1) = m * 1 + c$

$5 = m * 1 + c$

$5 = m + c$

Substitute $c = 1$

$5 = m + 1$

$m = 5 - 1$

$m =4$

So, the function is:

$g(x) = mx + c$

$g(x) = 4x + 1$

Calculate g(3)

$g(3) = 4*3 + 1$

$g(3) = 12 + 1$

$g(3) = 13$

3 0

3 years ago

A model rocket is launched with an initial velocity of 250 ft per second. The height h, in feet, of the rocket t seconds after t

diamong [38]

9514 1404 393

Answer:

{2.96, 12.66}

Step-by-step explanation:

A graph shows the rocket will be 600 feet up after 2.96 seconds, and again at 12.66 seconds.

You can solve the equation h = 600 to find the times.

-16t^2 +250t = 600

-16(t^2 -15.625t) = 600

-16(t^2 -15.625t +7.8125²) = 600 -16(7.8125²)

-16(t -7.8125)² = -376.5625

t -7.8125 = √(376.5625/16) ≈ ±4.8513

t = 7.8125 ± 4.8513 ≈ {2.9612, 12.6638}

The rocket will be 600 ft above the ground 2.96 and 12.66 seconds after launch.

4 0

2 years ago