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2 years ago

I NEED HELP FASTTT D:

Mathematics

1 answer:

Doss [256]2 years ago

4 0

Answer:

12x + 15 = 12x - 15

Step-by-step explanation:

-5x - 25 = 5x + 25

-25 = 10x + 25

-50 = 10x

-5 = x

12x + 15 = 12x - 15

15 = -15 ( No solution )

12x + 15 = 3(4x + 5)

12x + 15 = 12x + 15

12x = 12x

0 = 0 ( True for all x's )

7x + 21 = 21

7x = 0

x = 0

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There are 3 seventh-grade boys, 4 seventh-grade girls, 5 eighth-grade boys, and 8 eighth-

AURORKA [14]

Answer:

the answer would be 2/5

Step-by-step explanation:

you add up all of the boys to get 8

there are, in total 20 students that can be chosen, so there is an 8/20 chance that it would be a boy, simplified that is 2/5

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3 years ago

(Question Is In The Picture, Kinda Bad)

11111nata11111 [884]

Answer:

72 cupcakes

Step-by-step explanation:

Morgan can make 4 cupcakes with one cup of flour. She has 18 cups of flour and suppose she can make x cupcakes, then

1 cup of flour - 4 cupcakes

18 cups of flour - x cupcakes

Write a proportion:

$\dfrac{1}{18}=\dfrac{4}{x}$

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3 years ago

Kate runs 2/3 of a mile on Mondays, Wednesday's and Thursdays. She runs 4/5 of a mile on Tuesday and Fridays. How many miles doe

padilas [110]

Answer:

Therefore, we conclute that Kate run 1 mile and 7/15 of a mile for the week.

Step-by-step explanation:

We know that Kate runs 2/3 of a mile on Mondays, Wednesdays and Thursdays. She runs 4/5 of a mile on Tuesday and Fridays. We calculate how many miles does Kate run during the week.

Therefore, we get

$\frac{2}{3}+\frac{4}{5}=\frac{10+12}{15}=\frac{22}{15}=1+\frac{7}{15}$

Therefore, we conclute that Kate run 1 mile and 7/15 of a mile for the week.

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3 years ago

If you see a triangle that has a small box in one angle, what type of triangle is it?

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Answer:

right triangle

Step-by-step explanation:

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3 years ago

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we can do this by 2 ways

1- by plotting the points on graph and then tracing the points to get shape,

for linear, we will get straight line

for quadratic, we will get parabola

in this case, it is linear as we get a straight line

2- by solving for values of x and y

consider standard linear equation y = mx +c where m is slope and c is constant

by putting given values of x and y we get

y + 2x = 4(answer)

if we consider standard parabola equation

y^2 = 4ax

this equation is not true for given points

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3 years ago

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