How Many hours will he practice in 6 day?

Answers

Answer 1

Answer: B. 7 2/4 is your answer because 1 1/4 times 6 comes out to be 7 2/4.

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Choose the correct simplification of the expression (−5a5b4c3)0.
Evaluate, 100 divided by 25 x 20 + 4 divided by 2 -14=?
Which of the following equations is modeled by the graph
I need help with #3
How can you decide which variable to solve for first when you are solving a linear system by substitution

Is 6xyz and 8xy like terms

Answers

you can combine variables that are the same such as 6x and 8x, and y and y. that would end up being 14x+2y+z

What is an equation of the line that is perpendicular to y-3 =-4(x+2)

Answers

Answer:

$y - 3 = (1)/(4)(x+2)$ or choose any line with slope 1/4

Step-by-step explanation:

The slope of this line is -4. The slope of the line perpendicular to this line will be the negative reciprocal or 1/4.

Write the equation using the slope m=1/4 and the point slope form.

$y-y_1=m(x-x_1)\ny-3=(1)/(4)(x+2)$

This is the equation of the line that is perpendicular and passes through the same point (-2,3) as the equation listed.

Answer:

$y=(1)/(4) x+c$ where $c$ can be any number.

Step-by-step explanation:

First we need to clear for y:

$y-3 =-4(x+2)\ny=-4(x+2)+3\ny=-4x-8+3\ny=-4x-5$

and now we have an equation of the form:

$y=mx+b$

where m is the slope and b is the y-intercept.

in this case $m=-4$ and $b=-5$

to find and equation perpendicular to this line, the following must be true: $m*m_(1)=-1$

where m is the slope of the original line that i just mentioned, and $m_(1)$ is the slope of the new line. Substituting $m=-4$

$-4*m_(1)=-1$

clearing for $m_(1)$

$m_(1)=(-1)/(-4) \nm_(1)=(1)/(4)$

thus, the new perpendicular line must have the form:

$y=m_(1)x+c\ny=(1)/(4)x+c$

where the y-intecept $c$ can be any number, some examples are:

$y=(1)/(4)x+3\ny=(1)/(4)x-8$

and so on, the important thing to be a perpendicular line is that the slopes are related to the equation $m*m_(1)=-1$ .

ANSWER 30 please BOTH PARTS I NEED HELP! THANK YOU SO MUCH! BEST ANSWER GETS BRAINLIEST!

Answers

Let the variable s represent the amount Trey saved before mowing lawns.

Trey earns s dollars. Then he earns an additional $40. So far, he earns (s+40).
Then this amount is doubled: 2(s+40)
At the end, he has $234. So the equation is
2(s+40) = 234
2s + 80 = 234
2s = 154
s = 77

An arithmetic approach (solving using addition) could have the equation as
(s+40) + (s+40) = 234
s + 40 + s + 40 = 234
2s = 154
s = 77

The scale drawing of a swimming pool measures 2 inches by 3 inches. On the drawing .25 inches =3feet. What actual dimensions of a pool?

Answers

The answer would be 24 feet by 36 feet, because .25 goes into 2, 8 times. 8 • 3 = 24. .25 goes into 3, 12 times. 12 • 3 = 36. Therefore the answer is 24 ft by 36 ft

Devon is buying 3 greeting cards that cost $0.97 each. How can rounding be used to estimate the total cost of the cards?Since each card is about $1, the total cost is approximately 3 + 1 = $4.
Since each card is about $1, the total cost is approximately 3 x 1 = $3.
Since he is buying about 10 cards, the total cost is approximately 10 x 0.97 - $9.70.
Since he is buying about 10 cards, the total cost is approximately 10+ 0.97 = $10.97.