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Levart [38]
2 years ago
6

Can someone help me solve this?

Mathematics
1 answer:
Virty [35]2 years ago
8 0

Answer:

Her brothers pulse rate is 76.

Step-by-step explanation:

95% of 80 is 76. That only means that her brother's pulse rate must be 76 beats per minute.

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Someone please help me
Dovator [93]
<h3>Answer:  B) 2</h3>

=========================================================

Explanation:

Take away the four white small squares on the left side. To balance things out, you have to add 4 black squares to the right side.

Also, take away the two white long rectangles from the right side. To balance this out, you have to add 2 gray long rectangles to the left side.

You should have:

  • 5 gray rectangles, and no squares (of any color) on the left side
  • 10 black squares, no long rectangles (of any color), on the right side

From here you'll group up the 10 black squares so that you'll have 2 black squares per gray rectangle.

This means the solution is 2.

-------------------------------------

If you're curious about the algebraic way to solve, then you could do this:

3x-4 = -2x+6

3x+2x = 6+4

5x = 10

x = 10/5

x = 2

This method doesn't require us to use the visual model.

5 0
3 years ago
9d + d + 2d - 4 = 6d<br><br> A: 2/3<br> B: -2<br> C: 2/9<br> D: -9 <br><br> Please comment
jonny [76]
<span>9d + d + 2d - 4 = 6d
Add d to 9d
10d+2d-4=6d
Add 2d to 10d
12d-4=6d
Subtract 12d from both sides
-4=-6d
Divide -6 on both sides
Final Answer: 4/6 or 2/3 *Both answers are equivalent to each other.</span>
5 0
3 years ago
Read 2 more answers
If a,b,c,d,e are in continued proportion then a/c is equal to what ?​
elena55 [62]

Answer:

huh

Step-by-step explanation:

that don't make no sense

4 0
3 years ago
Write the fraction in lowest terms.<br><br> 13/17
Dmitry [639]
13/17 is at the lowest because they are both prime numbers.
3 0
3 years ago
Read 2 more answers
Solve the system of equations using the addition method 2a+3b=-1 ; 3a+5b=-2
Alexeev081 [22]

Answer:

Then, a=-1 and b=-1

Step-by-step explanation:

We need to solve the following system of equations using the adition method:

2a+3b=-1       (i)

3a+5b=-2      (ii)

First, we multiply the equation (i) by -3 and the equation (ii) by 2, so we get:

-6a-9b=3

6a+10b=-4

Adding the two equations we have:

-6a-9b=3

6a+10b=-4

--------------------------

 0  + b = -1

Then b=-1. Now, let's substitute the value of b into equation (i):

2a+3b=-1

2a + 3(-1) = -1

2a -3 = -1

2a = 2

a = 1

Then, a=-1 and b=-1

3 0
4 years ago
Read 2 more answers
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