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3 years ago

I need help asap

Mathematics

2 answers:

crimeas [40]3 years ago

8 0

No the triangle number sequence is
1,3,6,10,15,21,28,36,45

tiny-mole [99]3 years ago

3 0

Answer:

explanation:

Side lengths do not adhere to the triangle inequality theorem. Which states that the sum of the side lengths of any 2 sides of a triangle must exceed the length of the third side

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If f(x) = x2 – 2x, find:<br> f(-3) = [?]

maksim [4K]

9514 1404 393

Answer:

Step-by-step explanation:

Put the value where the variable is and do the arithmetic.

f(-3) = (-3)² -2(-3) = 9 +6

f(-3) = 15

3 0

3 years ago

Read 2 more answers

The rule is y=− 3/4 x+ 1 /4

Effectus [21]

The answer is C because y=-3/4 which is a negative.

7 0

3 years ago

To the nearest 0.01 degree, what angle of descent (angle of depression) must a plane 50 horizontal miles from the airport and at

HACTEHA [7]

20,000÷50=
$20000 \div 50 = 400ft$
The plane needs to descend at 400 ft per mile.

At 40 degrees?

4 0

3 years ago

Cj took a math test and got 36 correct and 9 incorrect answers. What was percentage of correct answers?

Anastaziya [24]

Answer:

Step-by-step explanation:

Your answer would be 80% or a B

4 0

3 years ago

Write a quadratic function for each graph described.

user100 [1]

Answer:

$y=2x^2-\frac{4}{3}x-\frac{10}{3}$

Step-by-step explanation:

we know that

The roots of the quadratic function (x-intercepts) are

x=-1 and x=5/3

we can write the equation of the parabola as

$y=a(x+1)(x-\frac{5}{3})$

where

a is a coefficient

Remember that

The parabola pass through the point (5,40)

substitute the value of x and the value of y of the ordered pair in the quadratic equation and solve for a

x=5, y=40

$40=a(5+1)(5-\frac{5}{3})$

$40=a(6)(\frac{10}{3})$

$40=20a\\a=2$

substitute

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

apply distributive property

$y=2(x^2-\frac{5}{3}x+x-\frac{5}{3})\\\\y=2(x^2-\frac{2}{3}x-\frac{5}{3})\\\\y=2x^2-\frac{4}{3}x-\frac{10}{3}$

see the attached figure to better understand the problem

6 0

3 years ago