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2 years ago

Someone please help me with this !!!

Mathematics

1 answer:

ser-zykov [4K]2 years ago

7 0

It is the first one, so where it is marked is already correct

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Moe and Larry each need to raise $200 to go on a trip with their school band.

svlad2 [7]

Moe Larry

35 + 20x 60 + 10x

35 + 20x = 60 + 10x

(show work)

x = 2.5

Moe and Larry will have the same amount of money in their savings accounts after 2.5 weeks.

-From TheRealMarinette

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3 0

2 years ago

Carolyn was asked to solve the following system of equations. Her work is shown. What is the solution to the system of linear eq

Natalka [10]

Answer:

(11, 13)

Step-by-step explanation:

Carolyn's work is incorrect. Below is the correct solution:

Given:

$3x - 2y = 7$ ----› Equation 1

$y = x + 2$ -----› Equation 2

Substitute y = (x + 2) in equation 1

$3x - 2y = 7$ ----› Equation 1

$3x - 2(x + 2) = 7$ (substitution)

$3x - 2(x) -2(+2) = 7$ (distributive property)

[Note: this is where Carolyn made a mistake]

$3x - 2x - 4 = 7$

Collect like terms

$x - 4 = 7$

$x = 7 + 4$ (addition property of equality).

$x = 11$

Substitute x = 11 in equation 2

$y = x + 2$ -----› Equation 2

$y = 11 + 2$ (substitution)

$y = 13$

✅The solution to the system of equations would be:

(11, 13)

8 0

2 years ago

Help due soon plss!!!!

Gelneren [198K]

Answer:

Cube=150cm^2

Triangular Prism=228ft^2

Step-by-step explanation:

Cube

$A=6a^2=6*5^2=150cm^2$

Triangular prism

Using these formulas

$A=2A_{B}+(a+b+c)h\\A_{B} =\sqrt{s(s*a)(s*b)(s*c)} \\s=\frac{a+b+c}{2}$

Solving for A

$A=ah+bh+ch+\frac{1}{2} \sqrt{-a^4+2(ab)^2+2(ac)^2-b^4+2(bc)^2-c^4} \\=6.5*11+5*11+6.5*11+\frac{1}{2} *\sqrt{-6.5^4+2*(6.5*5)^2+2*(6.5*6.5)^2-5^4+2*(5*6.5)^2-6.5^4} \\=228ft^2$

5 0

2 years ago

Need help with this as soon as possible.

jok3333 [9.3K]

-4x^2-28x-68

hope this helped!

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2 years ago

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alex41 [277]

Answer:

10x + 50 =1 +5

10x=6-50

10x=-44

x=-4.4

Step-by-step explanation:

4 0

2 years ago

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