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Tomtit [17]
3 years ago
11

(PLEASE HELP I WILL GIVE U BRAIN THING IF ITS CORRECT NO LINKS PLEASE)

Mathematics
1 answer:
Leno4ka [110]3 years ago
5 0

Answer:

1. Mary's mother gave her ten dollars to spend at the Market. Mary then spends two and a half dollars on her favorite candy. Mary wants to know how much money she has left.

2. x represents the amount of money Mary has remaining.

3. x + 2 1/2 = 10

(sub tract 2 1/2 from each side)

x = 7 1/2

Step-by-step explanation:

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Archie earns $4 a week for doing choirs. How much will Archie warm in 2 months if there are four weeks in each month?
siniylev [52]

Hello! The answer for your question would be $32. This is because if Archie earns $4 a week and there are 4 weeks in each month, and he works for 2 months, then 4*4 for one week would equal $16. This times 2 would equal $32 therefore, Archie earned $32 dollars for 2 months of doing chores.

4 0
4 years ago
Is quadrilateral jklm the result of a dilation of quadrilateral abcd by a scale factor of 2? why or why not?
4vir4ik [10]

No. Because sides JM and KL have different slopes from sides AD and BC .

The formula of a slope:

m=\dfrac{y_2-y_1}{x_2-x_1}

For AD:

We have the points A(2, -2) and D(1, -4). Substitute:

m=\dfrac{-4-(-2)}{1-2}=\dfrac{-2}{-1}=2

For JM:

We have the points J(4, -4) and M(2, -9). Substitute:

m=\dfrac{-9-(-4)}{2-4}=\dfrac{-5}{-2}=2.5

2\neq2.5

----------------------------------------

Another argument.

No. Because the MJ is not twice as long as AD.

The formula of the length of a segment:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

The length of AD:

|AD|=\sqrt{(1-2)^2+(-4-(-2))^2}=\sqrt{(-1)^2+(-2)^2}=\sqrt{1+4}=\sqrt5

The length of MJ:

|MJ|=\sqrt{(2-4)^2+(-9-(-4))^2}=\sqrt{(-2)^2+(-5)^2}=\sqrt{4+25}=\sqrt{29}

\sqrt{29}\neq2\sqrt5

4 0
4 years ago
How do you solve: 3 (x-1)=6
Leni [432]
Multiply 3 times x which gives you 3x then multiply 3 times -1 which gives you -3. Now you have an equation 3x-3=6. This is a two step equation so you have to add 3 (inverse operation) to 6 which gives you 9. Now you divide 9/3 which equals 3. The answer is 3
3 0
4 years ago
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Rewrite the radical as a rational exponent. the cube root of 2 to the seventh power
posledela
I would say the answer is B because A would be going to a thousand and you dont wanna do that so i think its a 50% chance its B

6 0
4 years ago
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Find the value of x - Step by step answer please
Ugo [173]

Answer:

x = -2

Step-by-step explanation:

Given :

\frac{8}{x+1} = \frac{-16}{x+4}

=============================================================

Cross multiplying the terms :

⇒ 8 (x + 4) = -16 (x + 1)

⇒ 8x + 32 = -16x - 16

⇒ 24x = -48

⇒ x = -2

5 0
2 years ago
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