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3 years ago

PLZZZ help with this its pretty simple!

Mathematics

1 answer:

marysya [2.9K]3 years ago

5 0

Answer:

Ok so first you want to distribute the -1 in front of the 3x^2-7x+1

Which turns the problem into

X^2+5x-6 -3x^2+7x-1

Then just combine like terms

-2x^2+12x-7

Also ^ followed by the number is the exponent

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Patrick is keeping track of how far he jogs each morning.

katrin2010 [14]

Answer:

21:50

Step-by-step explanation:

We need to find the ratio of 420 m to 1 km.

We know that,

1 km = 1000 m

So,

The ratio becomes,

$\dfrac{420\ m}{1\ km}=\dfrac{420\ m}{1000\ m}\\\\=\dfrac{42\ m}{100\ m}\\\\=\dfrac{21}{50}$

So, the required ratio is 21:50.

5 0

3 years ago

What is the least common denominator of the fractions 4/15 1/6 and 3/4

Alexus [3.1K]

Answer:

Step-by-step explanation:

We have to find least common denominator for these fractions or we just have to find the least common multiple for 15, 6 and 4

In order to find the least common multiple, we have to represent these numbers as factors of prime numbers:

15 = 3 * 5

6 = 2 * 3

4 = 2 * 2

Least common multiples will be common factors (considering that there are no more than of them in other numbers) and the uncommon factors. Then, we can write that:

2 * 2 * 3 * 5 = 60 (there are two 2's, one common 3 and an uncommon 5)

The denominator will be 60 for the least common multiples.

5 0

3 years ago

Read 2 more answers

Write a rule for the linear function shown in the graph.

Bezzdna [24]

Answer:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:

( 1 , − 2 )

Equation Form:

x = 1 , y = − 2

Step-by-step explanation:

Graph.

y = 3 x − 1

y = x + 1

y = − x − 1

y = x + 1

8 0

3 years ago

A car wash attendant counted the number of cars washed and the total amount of money earned. The company charged the same price

Bogdan [553]

The answer is m(n)= 11n
If you take the different of the money from 21 cars and 25 cars, you get 44 and since 21 and 25 is only a difference of 4, you’ll divide the 44 earned by the 4 cars washed to get $11 per car and then just make sure to use the correct variables

7 0

3 years ago

Given fx ( ) = 2x 2 + 4 f 2 , determine ( ) f −1 and () .

TEA [102]

Answer:

Step-by-step explanation:

The equation is not properly formatted presumably here is the format.

Given

$f(x) = 2x^2 + 4$