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3 years ago

I HAVE 2 MINS TO FINSIH PLZ HELP

Mathematics

2 answers:

IceJOKER [234]3 years ago

7 0

Answer:

The answer is 45

Step-by-step explanation:

Lisa [10]3 years ago

5 0

Answer:

Step-by-step explanation:

5(3)^2

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In triangle ABC, AB= 10cm, AC=9cm and angle B=60 degrees. Let BC=x cm. Use cosine rule to show that x is a solution of x^2-10x+1

stira [4]

Answer:

Step-by-step explanation:

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3 years ago

Helppp

adoni [48]

Answer:

- Early in the race,_Alberto_ runs faster.

- Alberto maintains a speed of _20_ km/h during the first hour of the race.

- meanwhile, Bianca’s running speed _Is exponential_

-The first person to cross the finish line is_Bianca_

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2 years ago

A homeowner has 5 zucchini plants in her garden. Over the course of the season, the yields (number of zucchinis per plant) are:

const2013 [10]

Answer:

Average = 16, standard deviation =

Step-by-step explanation:

15+12=27

27+(17+14)+22=27+31+22=80

80/5=16

Distance from 22 to 16=6, from 12 to 16=4, so deviation = 5

8 0

3 years ago

Read 2 more answers

My brain is lagging:<

Lubov Fominskaja [6]

Distance between two points $(-3, 4)$ and $(5, -2)$ is $10$ units.

Mid-point of the line segment joining $(-1, -5)$ and $(7, 1)$ is $(3, -2)$ .

Degree of the given polynomial is $7$ .

6) Distance between two points $(x_1, y_1)$ and $(x_2, y_2)$ is:

$\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

So, distance between two points $(-3, 4)$ and $(5, -2)$ is:

$=\sqrt{(5-(-3))^2+(-2-4)^2}$

$=\sqrt{(8)^2+(-6)^2}$

$=\sqrt{64+36}$

$=\sqrt{100}$

$=10$

So, option D is correct.

7) Mid-point of the line segment joining $(x_1, y_1)$ and $(x_2, y_2)$ is:

$(\frac{x_1+x_2}{2}, \frac{y_1+y_2}{2})$

Mid-point of the line segment joining $(-1, -5)$ and $(7, 1)$ is:

$(\frac{-1+7}{2}, \frac{-5+1}{2})$

$= (\frac{6}{2}, \frac{-4}{2})$

$= (3, -2)$

So, option A is correct.

8) Degree of a polynomial is the highest power of the variable in the polynomial.

$f(x)=3x^2-7x^4+9x^7+2x^3$

Here, the highest power of the variable is $7$ .

So, option B is correct.

Learn more about distance formula, mid point formula, and degree of polynomial.

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8 0

2 years ago

Liam’s football team scored a total of 43 separate times this season, with a mix of touchdowns and field goals. Each touchdown i

WINSTONCH [101]

This question is an example of what we call "system of equations". We can use two separate equations to help us solve.

Let a = number of touchdowns
Let b = number of field goals

a + b = 43
7a + 3b = 301

We can solve this system using the elimination method.

1. a + b - b = 43 + -b (add - b to both sides)
a = -b + 43

2. substitute -b + 43 for a in 7a + 3b = 301
7 (-b +43) + 3b = 301
-4b + 301 = 301 (simplify both sides of the equation)
-4b + 301 - 301 = 301 - 301 (add -301 to both sides)
-4b = 0
b = 0

Since b = 0, and b is the number of field goals, we know that Liam's team did not score any field goals. Which means the only points from his team came from touchdowns. So, 43 touchdowns were scored, and 0 field goals were scored, for a total of 301 points.

4 0

3 years ago