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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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3)<br> Evaluate the expression 2x-5 when x = 3.
Shalnov [3]

Answer:

1

Step-by-step explanation:

Plug in the x to the original equation given.

2(3)-5

2 times 3 is 6 so then,

6-5 =1

4 0
3 years ago
The endpoints of segment MP areM(-2,-4) and P(8,11) . If K portions MP in a ratios of MK:KP= 1:4, what are the coordinates of K?
diamong [38]

Answer:

The coordinates of k are (-2,-1)

Step-by-step explanation:

Here, we are interested in calculating the coordinates of point k.

Mathematically, we will use the internal division formula for this;

This would be;

(x,y) =( nx1 + mx2)/(m + n), (ny1 + my2)/(m + n)

where m = 1 , n = 4

x1 = -2 , x2 = 8

y1 = -4 , y2 = 11

we now make the substitutions into the formula;

(x,y) = 4(-2) + 1(-2)/(1+4) , 4(-4) + 1(11)/(4 + 1)

(x,y) = (-8-2)/5 , (-16 + 11)/5

(x,y) = -10/5 , -5/5

(x,y) = (-2, -1)

7 0
3 years ago
Find the area of the polygon.
antoniya [11.8K]

Answer:

2,400 cm²

Step-by-step explanation:

You can solve for x because you know that 40cm=x²+4cm:

36 cm = x²

x = 6cm.

Therefore the width is 2(6)²-12, which is 60cm.

So the area is 40 cm x 60 cm, which is 2,400 cm².

7 0
3 years ago
Unscramble the place value of 9 hundreds 4 ten thousands 8 ones 7 tens
madreJ [45]
9 hundreds 4 ten thousends 8 ones 7 tens = 940008,7 

hope helped 
7 0
3 years ago
How can you model geometry figures to solve real world problems
Strike441 [17]
You can model geometry for making buildings and sky scrapers, also stores.
6 0
3 years ago
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