I need help,, and thanks☺
i need help,, and thanks☺ - 1

Answers

Answer 1
Answer: Use the law of cosines. c^2= a^2 + b^2 - (2ac*cos (C))

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What adds up to 12 but multiplies to 60

Maura runs 5 miles in 1.25 hours. Ava runs 3 miles in 50 minutes (about 0.83hours), who runs faster? Justify your answer with a unit rate.

Answers

Answer:

Avas unit rate is for a mile 16.6666666667 minutes. while Mauras is 15 mins

Step-by-step explanation:

It would take Ava 16.6666666667 to run a mile, while it would take Maura 15 minutes to run a mile.

What is 6.99 × 10−4 in standard form? A) 0.0000699 B) 0.000699 C) 0.0699 D) 6,990

Answers

Option B: 0.000699 is the standard form

Explanation:

Given that the expression 6.99* 10^{-4

We need to determine the standard form of the expression 6.99* 10^{-4

Since, the power is in negative four, then we need to move the decimal point four places before the number 6.

Moving the decimal point four places before the number 6, we get,

0.000699

Thus, the standard form of the given expression is 6.99* 10^{-4

Therefore, Option B is the correct answer.

Answer:

It is B

Step-by-step explanation:

I just took it on USA test prep :)

HELP PLEASE ! Factor the polynomial completely.
18x^2y-2y

Answers

Answer:

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

Step-by-step explanation:

18x^2y-2y

Factor out the greatest common factor 2y

2y( 9x^2 -1)

The term in the parentheses is the difference of squares

a^2 - b^2 = (a-b)(a+b)

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

2y(3x-1)(3x+1) is what I came up with to answer your question, hope this helps!

Answer ASAP PLS -Angle PQR and angle TQV are vertical angles. The measures of the two angles have a sum of 100°. Write and solve an equation to find x, the measures of angle TQV.​

Answers

TQV: 50
good luck :’)

The graph of the function, f(x) = - 3x2 , opens which way up or down

Answers

I'm guessing that the 2 in that is ^2? if so, it opens down. 

Answer:

The graph of the function, f(x) = - 3x2 , opens DOWN and has a MAXIMUM  value

Odyssey

The work of a student to solve a set of equations is shown:Equation A: y = 4 − 2z
Equation B: 4y = 2 − 4z
Step 1: −4(y) = −4(4 − 2z) [Equation A is multiplied by −4.]
4y = 2 − 4z [Equation B]
Step 2: −4y = 4 − 2z [Equation A in Step 1 is simplified.]
4y = 2 − 4z [Equation B]
Step 3: 0 = 6 − 6z [Equations in Step 2 are added.]
Step 4: 6z = 6
Step 5: z = 1
In which step did the student first make an error?
Step 1
Step 3
Step 4
Step 2

Answers

in step 2 .. because when you multiple by -4 in step 1 , the equation in step 2 will be ( -4y =-16 + 8z)