2 years ago

Which expression below is equivalent to:

Mathematics

1 answer:

AlexFokin [52]2 years ago

5 0

C. combine like terms 7 + 3 -1 9b then 11-4

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Multiply the sum of 7/8 and 3/4 by the differences of 5/36 from 11/13

Anni [7]

Answer:

$=-\frac{331}{288}=-1.14930\dots$

Step-by-step explanation:

$(\frac{7}{8} + \frac{3}{4} )\times (\frac{5}{36} - \frac{11}{13} )\\\\\mathrm{Join}\:\frac{7}{8}+\frac{3}{4}:\quad \frac{13}{8}\\\\=\frac{13}{8}\left(\frac{5}{36}-\frac{11}{13}\right)\\\\\mathrm{Join}\:\frac{5}{36}-\frac{11}{13}:\quad -\frac{331}{468}\\\\=\frac{13}{8}\left(-\frac{331}{468}\right)\\\\=-\frac{13}{8}\times\frac{331}{468}\\\\\mathrm{Cross-cancel\:common\:factor:}\:13\\=\frac{1}{8}\times\frac{331}{36}\\\\=-\frac{1\cdot \:331}{8\times\:36}\\\\=-\frac{331}{288}$

4 0

3 years ago

F(x) = 2x2 – 3x 7 for the input value 2.what is the value of the function when x = 2?

Ad libitum [116K]

I hope this helps you

1)

f (2)=2.2^2-3.2-7

f (2)=8-6-7

f (2)= -5

2)

f (2)=2.2^2-3.2+7

f (2)=8-6+7

f (2)=9

8 0

3 years ago

On average how fast did he drive in hours per mile

Sindrei [870]

Answer:

38 miles per hour

Step-by-step explanation:

<em>Simple just divide 342/9 to get 38</em>

4 0

2 years ago

Sophia is 6 years older than her brother Eric. The sum of their ages is 28

Step2247 [10]

Answer:

Sophia is 17 years old. Sophia's brother is 11 years old.

Step-by-step explanation:

7 0

2 years ago

I thought of a number. I added 15, tripled it and then subtracted 3 from the result. I got 42. What was my number?

Natasha_Volkova [10]

Answer:

Step-by-step explanation:

15 x 3 = 45 - 3 = 42

4 0

2 years ago