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Masteriza [31]
3 years ago
5

Analyze tables use the table that shows the percents of blood types of 145 donors during a recent blood drive

Mathematics
1 answer:
Alenkinab [10]3 years ago
6 0

Answer:

a. 16

b. 80

c. Blood type AB

Step-by-step explanation:

Given:

O = 45%

A = 40%

B = 11%

AB = 4%

Total number of donors = 145

a. No. of donors that had type B blood = \frac{11}{100}*145 = \frac{1,595}{100} = 15.95

Type B blood donors ≈ 16

b. No. of blood donors without blood type O = \frac{40 + 11 + 4}{100}*145 = \frac{55}{100}*145 = \frac{7,975}{100} = 79.75

Those without blood type O ≈ 80

c. Find the number of people that had type AB:

Type AB = \frac{4}{100}*145 = 5.8 ≈ 6. This is less than 10 donors.

Therefore, blood type AB had less than 10 donors.

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5 0
3 years ago
1) Sally sprints 300 yards in a minute. Quadra runs 20% further than Sally in the same time.
Free_Kalibri [48]
1) answer = 360
explanation =
-> 10% of 300 = 300*10
-> 10% of 300 = 30
-> 20% = 10% x 2
-> 20% = 30 x 2
-> 20% = 60
-> 300 yards ( distance they ran ) + 60 yards ( how much more distance Quadra ran ) = 360 yards
2) answer = Newton spends 10 minutes or 1/6 hours reading
explanation =
-> 25% = 1/4
-> 40*4= 10
-> 1 hrs = 60 min
-> 10 min x 6 = 60 min
-> 1/6 hrs = 10 min
3) answer = 30 fish
explanation =
-> 40% = 12
-> 10% = 3
-> 40*4=10 and 12*4=3
-> 10% + 40% = 50% so 12 + 3 = 15
-> 50% = 15 and 100% = 15 x 2
-> 100% = 30
4) answer = 30
explanation =
-> 1/4 is equal to 25 %
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-> she have 50% of tej chocolates Which were in the tin she bought away and kept 15 chocolates to herself
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-> 50% x 2 = 100%
-> 15 x 2 = 30
3 0
2 years ago
I need help on regression equations
andrezito [222]

Answer:

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fresco: Where pigments are mixed with water and then applied to a plaster support, usually a wall or a ceiling.

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pigment: Ground up solids that contain color the color in paint.

tempera: A water based painting medium made with egg yolk, often used to paint frescos and panels.

vehicle: Adjusts the viscosity of the paint.

watercolor: Pigment that is mixed with arabic and gum, and mostly water before it is applied to the paper.

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Step-by-step explanation:

8 0
3 years ago
Priya measured the length of lizard to be 11 cm. The actual length is 12 cm. Find the % error.
Aleksandr [31]

Answer:

8.33%

Step-by-step explanation:

Formula for percent error:

|\frac{observed value - expected value}{expected value} | * 100%

Using this formula, we get:

|\frac{11-12}{12} |* 100 = \frac{100}{12} = 8.33

If you found this answer helpful please consider leaving 5 stars, giving it a like, or if you asked this question, mark this answer as Brainliest. Thanks!

8 0
2 years ago
What is the slope of a line that is perpendicular to the line whose equation is ax+by=c?
Oksi-84 [34.3K]

The perpendicular line will have a slope of b/a.

To find this, we first have to solve our equation for slope intercept form.

ax + by = c ----> subtract ax

by = -ax + c ----> divide by b

y = -a/bx + c/b.

So we know the slope of this equation to be -a/b. Since perpendicular lines have opposite and reciprocal slopes, we know we can simply flip the fraction and make it a negative to get the new slope of b/a.

6 0
3 years ago
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