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3 years ago

Math pls pls help help no trolls i really need this grade

Mathematics

1 answer:

postnew [5]3 years ago

7 0

Answer:

The second one is 3 and the third one is 8

Step-by-step explanation:

Just trust me

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I need help pls this is to confusing

OleMash [197]

Answer: the value of a is less than b because its to the left

Step-by-step explanation:

3 0

3 years ago

Catherine 168 pieces of gum playing at a bean bag toss in the county fair at school she gave three to every student in her math

Drupady [299]

Givens

Let the number of students in the class be x

Let the number of pieces of gum she gave out be 3x

Equation

3x + 8 = 168 This will not work out evenly. Let's try x - 1. The reason for that is because she may not give out anything to herself.

3(x - 1) + 8 = 168 This doesn't work either.

Well we have to choose. It's a rounding problem.

3x + 8 = 168 Subtract 8 from both sides.

3x = 168 - 8 Combine

3x = 160 Divide by 3 on both sides.

x = 160 / 3

x = 53.333333333

Since that can't be, we could say there were 53 students.

7 0

3 years ago

A package of fish weighs 2.5 pounds. The price is $3.50 per pound. What is the price of this package?

Wewaii [24]

Answer:

$8.75

Step-by-step explanation:

If you do

$3.50 x 2.5 you get

$8.75

7 0

3 years ago

55. If 3x = 4y, the value of (x + y)^2 : (x - y)^2 is:<br>

ladessa [460]

Answer:

$\large\boxed{(x+y)^2:(x-y)^2=49}$

Step-by-step explanation:

$3x=4y\qquad\text{subtract}\ 3y\ \text{from both sides}\\\\3x-3y=y\qquad\text{distributive}\\\\3(x-y)=y\qquad\text{divide both sides by 3}\\\\x-y=\dfrac{y}{3}\qquad(*)\\------------------\\3x=4y\qquad\text{add}\ 3y\ \text{to both sides}\\\\3x+3y=7y\qquad\text{distributive}\\\\3(x+y)=7y\qquad\text{divide both sides by 3}\\\\x+y=\dfrac{7y}{3}\qquad(**)\\------------------$

$(x+y)^2:(x-y)^2=\dfrac{(x+y)^2}{(x-y)^2}\qquad\text{use}\ \left(\dfrac{a}{b}\right)^n=\dfrac{a^n}{b^n}\\\\=\left(\dfrac{x+y}{x-y}\right)^2\qquad\text{substitute}\ (*)\ \text{and}\ (**)\\\\=\left(\dfrac{\frac{7y}{3}}{\frac{y}{3}}\right)^2=\left(\dfrac{7y}{3}\cdot\dfrac{3}{y}\right)^2\qquad\text{cancel}\ 3\ \text{and}\ y\\\\=(7)^2=49$

5 0

3 years ago

A fair coin is tossed 5 times in a row. The exact probability of the coin landing heads exactly 2 times is?

OLga [1]

$|\Omega|=2^5=32\\|A|=10\\\\P(A)=\dfrac{10}{32}=\dfrac{5}{16}$

5 0

3 years ago

Math pls pls help help no trolls i really need this grade​

Math pls pls help help no trolls i really need this grade