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4 years ago

Solve for x: 2x + 5y = 10

Mathematics

2 answers:

gogolik [260]4 years ago

6 0

Answer:

x = 5 - (5 y)/2

Hope this helps!

Romashka [77]4 years ago

3 0

Answer:

$-\frac{5y}{2}+5$

Step-by-step explanation:

2x+5y=10

-5y on both sides.

2x=10-5y

Divide by 2

$-\frac{5y}{2}+5$

Hope this helps!!

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A polygon with side lengths of 6, 9, and 15 forms a triangle. True False

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Try this: Combine 6 and 9, obtaining 15.

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Think: Do 2 straight lines of length 15, superimposed on one another, form a triangle?

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4 years ago

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Frank invest $500 at a simple interest rate of 3%. How much interest will earn after 5 years

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A study was conducted to investigate the relationship between maternal smoking during pregnancy and the presence of congenital m

Pachacha [2.7K]

Answer:

a) In the explanation.

b) P=0.09714

c) P=0.0866

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Step-by-step explanation:

a) The sampling distribution will have this properties:

1 - The sampling distribution of a proportion is equal to the binomial distribution.

2 - The mean of the sampling distribution will be equal to the proportion of the population (0.328).

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$\sigma_s=\sqrt{\pi(1-\pi)/n}=\sqrt{0.328*(1-0.328)/25}=0.094$

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D) The value of p that cuts off the lower 10% of the distribution corresponds to z=-1.28.

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3 years ago

Solve for x: x-9= 0 A.x- -2 CB. = 2 C C. X = 20

mars1129 [50]

Answer:

x = 9

Step-by-step explanation:

Well, let's solve it!

x - 9 = 0

Let's add 9 to both sides to isolate the variable and maintain equality.

We end up with :

x = 9 since -9 and 9 cancel out and 0 + 9 = 9.

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4 years ago

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Pls help me

Lesechka [4]

Answer:

Step-by-step explanation:

when x=4

area=4²+14×4+c=16+56+c=72+c

8²=64

9²=81

72+c=81

c=81-72=9

area=81 units²

length of each side=√81=9 units

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3 years ago