All categories

2 years ago

Someone help please, i cant solve this one :|

Mathematics

2 answers:

Nataly_w [17]2 years ago

5 0

Answer:

A. y = 45.25x + 10

Step-by-step explanation:

We can use the points (3, 145.75) and (5, 236.25) to solve.

Find the slope using the formula [ y2-y1/x2-x1 ].

236.25-145.75/5-3

90.5/2

45.25

Find the y-intercept using the formula for slope-intercept form [ y = mx + b ]

y = 45.25x + b

145.75 = 45.25(3) + b

145.75 = 135.75 + b

10 = b

Put everything we solved for into the formula above.

y = 45.25x + 10

Best of Luck!

andrey2020 [161]2 years ago

4 0

Answer:

i think its B

Step-by-step explanation:

You might be interested in

Expand and simplify 5(2x-1)-2(3x+2)

kupik [55]

Answer:

4x - 9

General Formulas and Concepts:

Pre-Algebra

Distributive Property

Algebra I

Terms/Coefficients/Degrees

Step-by-step explanation:

Step 1: Define

5(2x - 1) - 2(3x + 2)

Step 2: Solve for x

Distribute: 10x - 5 - 6x - 4
Combine like terms (x): 4x - 5 - 4
Combine like terms (Z): 4x - 9

6 0

1 year ago

A. Calculate the average yearly rate of change in home runs hit from 1990 to 1992.

kodGreya [7K]

Answer:

Step-by-step explanation:

Use the rise over run formula

y2-y1/x2-x1

1992-1990/3317-3038

2/-279

-139.5

5 0

2 years ago

An isosceles triangle ABC has legs of length 24 and a vertex angle that measures 36º . Determine the length of its base, BC , to

iris [78.8K]

Answer: $BC=14.8$

Step-by-step explanation:

By definition, an Isosceles triangle has two equal sides and its opposite angles are congruent.

Observe the figure attached, where the isosceles triangle is divided into two equal right triangles.

So, in this case you need to use the following Trigonometric Identity:

$sin\alpha =\frac{opposite}{hypotenuse}$

In this case, you can identify that:

$\alpha =\angle BAD=\angle CAD=18\°\\\\opposite=BD=CD=x\\\\hypotenuse=AB=AC=24$

Substituting values, and solving for "x", you get:

$sin(18\°)=\frac{x}{24}\\\\24*sin(18\°)=x\\\\x=7.416$

Therefore, the length of BC rounded to nearest tenth, is:

$BC=2(7.416)=14.8$

6 0

2 years ago

In 2012, the population of a city was million. The exponential growth rate was % per year.

saul85 [17]

Answer:

In 2012, the population of a city was 5.72 million.

Step-by-step explanation:

6 0

2 years ago

What is -a^-2 if a=-5

Leviafan [203]

$-a^{-2}=-(-5)^{-2}=-\left(\dfrac{1}{-5}\right)^2=-\dfrac{1}{25}$

3 0

2 years ago