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3 years ago

Which expression is equivalent to 42 + 30? (1 point)

Mathematics

2 answers:

Tanzania [10]3 years ago

8 0

Hi , the answer is C because 6 times 7 equals 42 , 6 times 5 equals 30 and 42 plus 30 equals 72 .
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ikadub [295]3 years ago

6 0

Well lets see A, B and D are too large in the parenthesis that the numbers outside of the parenthesis will use to multiply considering 42 + 30.
6(7 + 5)
6(12)
72

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aliina [53]

Answer:

it would be 910

Step-by-step explanation:

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4 years ago

Please answer CORRECTLY !!!! WILL MARK BRAINLIEST !!!!!!!!!

FrozenT [24]

Answer:

$g(n) = \frac{11}{3} + \frac{5n}{3}$ or g(n) = (11/3) + (5/3)n

Step-by-step explanation:

Equation: $3m - 5n = 11$

To write a formula for g(n) in terms of n, we have to get m seperately.

$3m - 5n = 11$ , add 5n in both sides

$3m - 5n + 5n = 11 + 5n$ , now add

$3m = 11 + 5n$ , now divide both sides by 3

$\frac{3m}{3} = \frac{11 + 5n}{3}$

$m = \frac{11}{3} + \frac{5n}{3}$

Now, replace m with g(n)

$g(n) = m$

$g(n) = \frac{11}{3} + \frac{5n}{3}$

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3 years ago

Drag the point around to graph more horizontal lines. What is the general equation of a horizontalline?

svetlana [45]

A horizontal line is one for which the value of y is the same for the entire length of the line. Therefore this type of line can be expressed as below:

$y=c$

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2 years ago

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Sholpan [36]

C is your answer....

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4 years ago

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pashok25 [27]

Answer:

a) $y=\frac{28}{75}(x-1900)+47.3$

b) 86.5 years

Step-by-step explanation:

All values are rounded to 2 decimal places

a) We can find line by using y =mx+b

$y=mx+b\\m=\frac{y^{2}-y^{1} }{x^{2}-x^{1}}\\m=\frac{69.7-47.3}{1960-1900} \\m=\frac{22.4}{60} \\m=\frac{28}{75}\\c=y-intercept\\y-intercept=47.3\\y=\frac{28}{75} (x-1900)+47.3$

Therefore the line of best fit is $y=\frac{28}{75}(x-1900)+47.3\\$

b) We can do this by using the formula of the best fit line to estimate the life expectancy of someone born in 2005

$y=\frac{28}{75}(x-1900)+47.3\\y=\frac{28}{75}(2005-1900)+47.3\\y=\frac{28}{75}\times105+47.3\\y=86.5$

Therefore the estimated life expectancy of someone born in 2005 is 86.5 years

PS. Please give brainliest answer this was a lot of working out

3 0

3 years ago