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2 years ago

Evaluate please I need helppppp

Mathematics

2 answers:

grandymaker [24]2 years ago

8 0

Answer:

-5

Step-by-step explanation:

IrinaK [193]2 years ago

5 0

Answer:

-5 sorry if it's wrong. I tried.

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Solve 15x + 2 = 47 (what is the value of the variable “x?”) *

Dima020 [189]

Answer:

x = 3

Step-by-step explanation:

$15x + 2 = 47 \\ 15x = 47 - 2 \\ 15x = 45 \\ x = \frac{45}{15} \\ x = 3$

7 0

3 years ago

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Which equation is equivalent to the given equation?<br> - 4(x – 5) + 8x = 9x – 3

seraphim [82]

Hi!

-4(x - 5) + 8x = 9x - 3

-4x + 20 + 8x = 9x - 3

-4x + 8x - 9x = -3 - 20

Answer: B

3 0

3 years ago

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In 1924, the tempature in Fairfield, Montana, dropped from 63 degrees to 21 in 12 hour. What was the average hourly change in te

Drupady [299]

Find the change
the change is 63-21=42
42 degrees in 12 hours
we want to find xdegrees/1hour
42/12=3.5 degrees per hour

8 0

3 years ago

HELP ME PLEASE I NEED HELP

Olin [163]

Step-by-step explanation:

You should prolly subtract 2 from both sides first.

So you get, -|2/5x + 3| > -1 2/5

Add three to both sides
-|2/5x| = -1 2/5
Do -1 and 2/5 divided by 2/5 to get -3.5, x > -3.5

One of the answers is x > -3.5 but you need to switch the sign to less than and make the other side the opposite.

$-( \frac{2}{5}x + 3 ) < 1 \frac{2}{5}$

You see that, switched the sign and made whats on the right side opposite. So now solve for x again but with this new equation. Also, the parentheses are absolute value signs

Subtract 3 from both sides

-|2/5x| < -1 and 3/5

Divide 2/5 from each side to get x < -4

I hope I'm correct, my bad if I'm wrong

6 0

3 years ago

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Laat month, andy collected 432 stamps, which was 4 times the number of stamps alva collected. If alva collected 6 times as many

Anastasy [175]

After Sally had given 1/9 of her stamps to Andy, she had 280 stamps (since they now have equal shares). So 280 was 8/9 of what she started with, making the 1/9 she handed over equal to 280/8, that’s 35. And Andy was “under” by the same amount she was “over” an equal share, that’s 35 under matching her 35 over, which is 70 altogether.

By all means use algebra but you may find you can reason a word problem through in words.

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2 years ago

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