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Tanzania [10]
3 years ago
9

What is the solution to the system of equation

Mathematics
1 answer:
maksim [4K]3 years ago
4 0

Answer:

D. (2 , 1)

Step-by-step explanation:

STEP 1: Replace all occurrences of y with -3x+7 in each equation.

-x+14=12\\y=-3x+7

STEP 2: Solve for x in the first equation.

x=2\\y=-3x+7

STEP 3: Replace all occurrences of x with 2 in each equation.

y=1\\x=2

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Please help, I'll mark Brainiest. It's 8th grade math
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Answer:

(-5, 2)

Step-by-step explanation:

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-5 - 5y = -15

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7 0
3 years ago
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A survey shows that 10% of the population is victimized by property crime each year. A random sample of 527 older citizens (65 y
jekas [21]

Answer:

The data provide sufficient evidence that older people are more likely to be victimized.

Step-by-step explanation:

H 0 : P = 0.10

H 1 : P > 0.10 (Right tailed test)

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The test statistics

x = P - p / \sqrt{p*(1-p) / n}

x = 0.1235 - 0.10 / \sqrt{0.10 * 0.90 / 527}

x = 0.0235 / \sqrt{0.09 / 527}

x = 0.0235 / \sqrt{0.00017077798}

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7 0
3 years ago
The diagram shows a solid formed by joining a hemisphere, of radius rcm, to a cylinder, of radius rcm and height hcm. The total
posledela

Answer:

Step-by-step explanation:

The total surface area of the sphere = 2πr²

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r is the radius of the sphere and the cylinder

h is the height of the cylinder

Total surface area of the solid = 2πr(r+h)

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205π = 2πr(18)

205π = 36πr

205 = 36r

Divide both sides by 36

205/36 = 36r/36

r = 5.69cm

Since  r+h = 18cm

5.69+h = 18

h = 18-5.69

h = 12.31cm

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3 years ago
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Answer:

60%

Step-by-step explanation

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Step-by-step explanation:

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