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3 years ago

Can somebody please please help me !!!! I don’t know if the answer is A,B,C,D ! Help ASAP !!!

Mathematics

2 answers:

Alexxx [7]3 years ago

8 0

Answer:

pretty sure its b

Step-by-step explanation:

Elan Coil [88]3 years ago

8 0

(-3y²-4x² $y^{4}$ )-(4y²-5x² $y^{4}$ +6y)-(-3x-14y²)

First take the terms out of the parentheses.

-3y²-4x² $y^{4}$ -4y²+5x² $y^{4}$ -6y+3x+14y²

Then combine like terms.

x² $y^{4}$ +7y²-6y+3x

answer: A

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Lucia has 3.5 hours left in her workday as a car mechanic. Lucia needs 1/2 of an hour to complete one oil change.

MatroZZZ [7]

Answer: So Lucía has 3.5 hours left, and need 1/2 of an hour (or 0.5 hours) to do one oil change.

a) If you divide the total time she has by the time she needs for each oil change, then you got the total number of oil changes that she can do in that time; this is:

3.5/0.5 = 7

So she can do 7 oil changes in 3.5 hours.

b) If she can complete two car inspections in the same amount of time it takes her to complete one oil change, then she can do two car inspections in 0.5 hours.

2*car inspections = 0.5 hours

car inspection = (0.5/2) hours

then one car inspection will take 0.5/2 = 0.25 hours.

c) Two ways to solve this:

1) Do the same that we did in a), this is: 3.5/0.25 = 14

she can do 14 car inspections.

2) If in 3.5 hours, she can do 7 oil changes, and in the time she does an oil change, she can do two car inspections, then in 3.5 hours she can do 7*2 car inspections, and 7*2 = 14

5 0

3 years ago

Read 2 more answers

(4,-1). Parallel to y=-4x+2

allochka39001 [22]

Answer: x=1/2

Step-by-step explanation:

y= - 4x + 2

X=1/2

6 0

3 years ago

2. Jamie is the starting pitcher for his baseball team. The coach recorded the number of pitches he threw in one game. Each pitc

Likurg_2 [28]

90, because 60% of 90 is 54

3 0

3 years ago

Fine the slope of the line perpendicular to the line graphed below

goldenfox [79]

Answer:

$-\frac{1}{2}$

Step-by-step explanation:

The slope of this line is 2 because the rise from one point is 2, and the run is 1. The change in y-value is divided by the change in the x-value which is 2/1, hence, the slope of the line being 2.

The slope of the line perpendicular to the one shown below will be $-\frac{1}{2}$ because the slope that will result in a perpendicular line is the negative reciprocal of the original slope.

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3 years ago

if A= (-1, -3) and B= (11, -8) what is the length of AB A) 14 units B) 11 units C) 13 units D) 12 units

Anastasy [175]

Distance is the formula :

D $AB$ = $\sqrt{(xA - xB)^2 + (yA - yB)^2}$

so

$\sqrt{(-1 - 11)^2 + (-3 + 8)^2}$

= 13

Answer is C)

5 0

3 years ago