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4 years ago

Hi it’s me babygirl371432

Mathematics

2 answers:

saw5 [17]4 years ago

4 0

Answer:

Hey

Step-by-step explanation:

babymother [125]4 years ago

4 0

Answer:

Step-by-step explanation:

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A rocket moves at the speed of 4.9 miles per second. How fast is the rocket traveling kilometers/hour (km/h)? (1 mile = 1.6 kilo

alexira [117]

The answer is c) 11,025 km/h

8 0

3 years ago

Read 2 more answers

PLEAZE HELP WILL MARK BRAINLIEST Jenny earned a 77 on her most recent test. Jenny’s score is no less than 5 points greater than

Tasya [4]

Answer: $j \ge \frac{4}{5}t+5$

note: replace 'j' with any other letter you want, assuming your book does not use this letter.

=============================================

Explanation:

j = jenny's score

t = Terrance's score

(4/5)*t = 4/5 of Terrance's score

(4/5)*t+5 = 5 points greater than 4/5 of Terrance's score

$j \ge \frac{4}{5}t+5$ represents the inequality connecting Jenny's score and Terrance's score. Saying "her score is no less than some amount" is basically saying "the lowest her score can go is that amount". A specific example: if we say "her score is no less than 12" then this means "her score is 12 or more" and we can write $j \ge 12$

4 0

3 years ago

A friend of mine came to me the other day with a question about her new car. She asked, “My car gets 30 miles per gallon when I

Serga [27]

Answer:

420 miles

Step-by-step explanation:

In this case the question is, how many miles would it go if it were highway, the statement tells us that the car gets 30 miles per gallon when I drive on the highway and in addition to that, on the trip it was spent + or 14 gallons, therefore :

30 miles per gallon * 14 gallons = 420 miles

That is to say that if the car had made this trip by highway it would have spent 420 miles, that is to say 20 miles more than the trip

5 0

3 years ago

What is pi minus pi plus pi divided by pi x 25.9. WILL MARK BRAINLIEST

mestny [16]

Answer:

25.9

Step-by-step explanation:

25.9

pi-pi+pi/pi is 0+(1*25.9) which is 25.9

Hope this helps :D

8 0

3 years ago

Read 2 more answers

Solve using the quadratic formula. 2x2=8x-7

Ierofanga [76]

Answer:

$\boxed{x=\frac{4\pm\sqrt{2}}{2}}$

Step-by-step explanation:

Part 1: Rewriting equation to match ax² + bx + c = 0 (quadratic function)

The given equation is not written in quadratic form. To rewrite the equation:

All values need to be on the left side of the equation and set equal to zero.

To overcome this difficulty, follow these mathematical steps:

$2x^2=8x-7\\2x^2-8x=-7\\2x^2-8x+7=0$

Subtract 8x from both sides of the equation to rearrange it to the left side. Then, add 7 to rearrange it as well. Finally, set the three values on the left of the equation equal to zero.

Part 2: Using the quadratic formula

The quadratic formula is defined as $\boxed{x=\frac{-b\pm\sqrt{b^2-4ac} }{2a} }$ .

Using the parent quadratic function, the values are easy to find in the given equation. $\boxed{a=2, b=-8, c=7}$

Substitute these values into the quadratic formula and solve for x.

$x=\frac{8\pm\sqrt{(-8)^2-4(2)(7)}}{2(2)} \\\\x=\frac{8\pm\sqrt{64-4(14)}}{4}\\\\x=\frac{8\pm\sqrt{64-56}}{4} \\\\x=\frac{8\pm\sqrt{8}}{4}\\\\x= 2\pm\frac{\sqrt{8}}{4}\\ \\x=2\pm\frac{\sqrt{2}}{2}$

Part 3: Solving for x with the values from the quadratic formula

Now that x is set equal to the simplified version of the equation, the operations have to be followed through with.

This equation will have two zeros/roots to solve for by setting x equal to zero.

Operation 1: Addition

$x=2+\frac{\sqrt{2} }{2}\\\\x=\frac{4+\sqrt{2}}{2}$

Operation 2: Subtraction

$x=2-\frac{\sqrt{2}}{2}\\ \\x=\frac{4-\sqrt{2}}{2}$

Because both values are the exact same (minus the operations), the roots can be simplified even further to one value:

$\boxed{x=\frac{4\pm\sqrt{2}}{2}}$

7 0

3 years ago