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Blizzard [7]
3 years ago
11

4[3(10-7)+(11•2)] Help please

Mathematics
2 answers:
Yuri [45]3 years ago
8 0
Answer: 124

Explanation: 4[3(10-7)+(11•2)]
Parentheses - 4[3(3)+(22)]
Parentheses - 4(9+22)
Parentheses - 4(31)
Multiplication - 124
Anna007 [38]3 years ago
5 0
The answer is 124 :)
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What is an equation of the line that passes through the point (-5, -3) and is
bija089 [108]

9514 1404 393

Answer:

  3x +5y = -30

Step-by-step explanation:

The parallel line can have the same x- and y-coefficients. You can find the value of the new constant by using the given point for x and y:

  3x +5y = 3(-5) +5(-3) = -30

  3x +5y = -30

6 0
3 years ago
If 2/x+ 3/y =13 and 5/x- 4/y = -2, then x+y equals
creativ13 [48]

Answer:

x + y =  \frac{5}{6}

Step-by-step explanation:

Let:

u =  \frac{1}{x}  \\ v =  \frac{1}{y}

This allows us to manipulate the equations like we normally would.

2u + 3v = 13 \\ 5u - 4v =  - 2 \\  \\   + 8u + 12v = 52 \\  + 15u - 12v =  - 6 \\ 23u = 46 \\ u = 2 \\  \\ 2(2) + 3v = 13 \\ 4 + 3v = 13 \\ 3v = 9 \\ v = 3

Then, we return the values where they belong.

u =  \frac{1}{x}  \\ 2 =  \frac{1}{x}  \\ x =  \frac{1}{2}  \\  \\ v =  \frac{1}{y}  \\ 3 =  \frac{1}{y}  \\ y =  \frac{1}{3}

Finally, we add:

\frac{1}{2}  +  \frac{1}{3}  =  \frac{3}{6}  +  \frac{2}{6}  =  \frac{5}{6}

7 0
3 years ago
6 music CDs to 8 DVDs, 18 music CDs to 24 DVDs. Determine whether the ratios are equivalent. Show your work
atroni [7]
They are indeed equivalent.
The ratios can be set up as 6/8 and 18/24.
Once simplified, both of these ratios become 3/4, and are therefore equivalent.
8 0
3 years ago
Today's cafeteria specials at a high school in Somerville are a deluxe turkey sandwich and a
umka2103 [35]

The cost of turkey sandwiches is $3 and chef salads costs $2.

 Two equations can be derived from this question:

12t + 44s = 124 equation 1

12t + 58s = 152  equation 2

Where:

t = turkey sandwiches

s = chef salads

In order to determine the value of s, the following steps would be taken:

Subtract equation 1 from 2

14s = 28

Divide both sides of the equation by 14

s = $2

Substitute for s in equation 1

12t + 44(2) = 124

12t = 88 = 124

12t = 124 - 88

12t = 36

t = 3

To learn more about simultaneous equations, please check: brainly.com/question/23589883

3 0
3 years ago
You did 5 trials of push-ups in a minute with the following results:
Finger [1]

Answer:

36 push-ups on your sixth trial

<u>I would appreciate Brainliest, but no worries.</u>

8 0
3 years ago
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