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brilliants [131]
3 years ago
9

What are the roots of the equation? x^2−x−42=0 Enter your answers in the boxes. x = and x =

Mathematics
2 answers:
Natasha_Volkova [10]3 years ago
8 0
Your roots are x=7 and x=-6
Lunna [17]3 years ago
3 0

Answer: x=7 or x=-6 is the answer

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If x varies directly as y, then what is y when x = 4,<br> knowing that x = 60 when y = 5?
Basile [38]

Answer:  The answer would be 1/2

Step-by-step explanation:

<em>Y varies DIRECTLY as x. Find the constant of variation, k, if y = -5x </em>

<em>The first sentence is there for information, the constant is a number( 1,2,3...so on) , so the only number is -5 </em>

<em>It is a linear equation meaning equation of a straight line. </em>

<em>its form is y= mx+b, where m is the slope of the line, b is the y intercept when x=0. these info you have to memorize like your life depend on it. </em>

<em>next, y varies directly as x. If y = 15 when x = 60, find y when x = 100 </em>

<em>if y= 15, when x=60, then there is a number m such that m*y= 60 </em>

<em>or m= 60/y= 60/15 =4 </em>

<em>so the equation is y=4x. in this cause, the b=0 </em>

<em>so when x=0, y=0 </em>

<em>The distance a car travels at a constant speed varies directly as the time the car spends traveling. If a car traveled 105 miles in 3 hours, how far could the car travel in 5 hours? </em>

<em>remember that distance = speed times time. </em>

<em>or d=Vt </em>

<em>so car goes 105 miles on 3 hours </em>

<em>how far it goes in one hour? </em>

<em>if you know that, then you can tell how far it goes in 5 hours.</em>

<em>Hope I made it non tough enough</em>

<em>Please give me Brainliest</em>

4 0
3 years ago
Read 2 more answers
Maria has baked a cake for Cathy's birthday. The dimensions of the cake are 13 1/2 inches by 6 3/4 inches. The cake is going to
ycow [4]

Answer:

Step-by-step explanation:

Given:

Length = 27/4 in

Width = 27/2 in

5.55% of the cake = 5.55/100

= 1/18 

Therefore, 18 equal squares of cake where 1 piece is 5.55 % of the cake

Since, the cake is twice as long as it is wide, so that means cut half the cake (27/4 × 27/4) into 9 pieces.

Therefore, each has a side of 1/3 * 27/4

= 9/4 inches.

8 0
3 years ago
Helpppppppppppppppppppp
Tju [1.3M]

Answer:

the third option -24a^2b^12

Step-by-step explanation:

5 0
3 years ago
A wheel had a radius of 15cm . Approximately how far does it travel in 4 revolutions
m_a_m_a [10]

Answer:

c

Step-by-step explanation:

sepse nuk me intereson se ca thua ti jevg dreqi i cmen

4 0
2 years ago
I'm not good at graph math, please help if you can. Thank you<br> Its not C
viktelen [127]

Answer:

D

Step-by-step explanation:

6 0
2 years ago
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