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4 years ago

One number is four more than twice another. Their sum is 34. Find the numbers.

Mathematics

1 answer:

lianna [129]4 years ago

5 0

x = 15

2x + 4 = 34

-4 -4

2x = 30

2 2

X = 15

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Given, y = x2 – 6x + 8, algebraically determine the axis of symmetry.

Nitella [24]

Answer: 3

Step-by-step explanation:

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3 years ago

Help me with this plsss

Brrunno [24]

a. 8 x 7 x 1/2 = 56 x 1/2 = 28

b. 24 x 14 x 1/2 = 336 x 1/2 = 168

c. 5 x 12 x 1/2 = 60 x 1/2 = 30

d. 4 x 4.8 x 1/2 = 19.2 x 1/2 = 9.6

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rectangle: 15 x 8 = 120

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3 years ago

A factory produced 150 tons of steel in one year. the next year, the output increased to 180 tons. what is the percentage increa

Murljashka [212]

A factory produced 150 tons of steel in one year. the next year, the output increased to 180 tons. Then,The percentage increase = (Final -initial) /initial *100 = (180-150)*100/150 = 20% Thus, the net percentage increase in the output is 20%

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4 years ago

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Which of the following is a true statement about perfect squares?

ollegr [7]

The answer is 6x6=36

5 0

3 years ago

Ellie read an article claiming that 10% of people in her county were senior citizens, and she thought that it may be higher for

viva [34]

Answer:

The value is $z = 3$

Step-by-step explanation:

From the question we are told that

The population proportion of senior citizens is $p = 0.10$

The sample size is $n = 225$

The number of senior citizens is k = 36

The null hypothesis is $H_o : p = 0.10$

The alternative hypothesis is $H_a : p > 0.10$

Generally the sample proportion is mathematically represented as

$\^{p} = \frac{k}{n}$

=> $\^{p} = \frac{ 36 }{225}$

=> $\^{p} =0.16$

Generally the test statistics is mathematically represented as

$z = \frac{\^{p} - p }{\sqrt{\frac{p(1 -p )}{n} } }$

=> $z = \frac{0.16 - 0.10 }{\sqrt{\frac{p(1 -0.10)}{225} } }$

=> $z = 3$

3 0

3 years ago