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antoniya [11.8K]
3 years ago
6

Someone please help, i already asked this but i really need this!!!

Mathematics
1 answer:
Vikki [24]3 years ago
6 0

Answer:

Step-by-step explanation:

Blue Triangles

Area of 1 blue triangle

Area = 1/2 B * H

B = 3 m

H = 4.5 m

Area = 1/2 * 3 * 4.5

Area = 1/2  13.5

Area = 6.75

Hold on. I forgot there were 4 triangles.

4 * 6.75 = 27 meters^2 of material

Green Base

Area = s * s

s = 3

Area = 3 * 3   = 9

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Almonds cost $3.49 per pound a bag of almonds cost $6.95 to the nearest whole pound about how many pounds of almonds are in the
Kryger [21]

Answer:

The hint in this problem is the word "about" or approximately how many pounds. So we could find the solution by estimation through rounding off. We know that almonds cost about 3.50 per pound and a bag costs about $7.00. Dividing 7 by 3.50 per pound, will give us $7 ÷ $3.50 = 2 pounds.

The answer is 2 pounds.

5 0
3 years ago
Rectilinear motion is A. non existent B. motion in sphere C. motion along a line.​
balandron [24]

Answer: The answer is: C.

~ i hope this is correct, if not im sorry, have a gr8 day my friend!~

Step-by-step explanation:

7 0
3 years ago
A bivariate data set has x = 21, sx = 13, y = 55, sy = 27, and r = .88. What is the equation for the regression line of y on x?
earnstyle [38]

Answer:

c) y=16.57+1.83x

Step-by-step explanation:

Equation for regression line of y on x is given as

\hat{y}=mx+b --- (1)

where

\hat{y} = predicted value

m = slope of line

b = intercept

m and b are found as

m=r\frac{S_{y}}{S_{x}}---(2)\\\\b=\bar{y}-m\bar{x}---(3)

r = correlation coefficient = 0.88

Sx = standard deviation for independent variable x = 13

Sy = standard deviation for dependent variable y = 27

\bar{x} = mean value of independent variable x = 21

\bar{x} = mean value of dependent variable y = 55

Substituting these values in (2) and (3)

m=r\frac{S_{y}}{S_{x}}\\\\m=(0.88)\frac{27}{13}\\\\m=1.83

b=\bar{y}-m\bar{x}\\\\b=55-(1.827)(21)\\\\b=16.57

Putting these values of m and b in (1)

y=1.83x+16.57

5 0
3 years ago
Triangle ABC has perimeter 22 cm.
Serggg [28]

Answer:

Step-by-step explanation:

A = 8 cm

B = 5 cm

C = 22 - 8 - 5 = 9 cm

Use the Pythagreom Theroem (a^2 + b^2 = c^2) if the two sides are equal to one another than it is a right triangle.

8^2 + 5^2 = 9^2

64 + 25 = 81

89 = 81

89 does not equal 81, so this is not a right triangle.

3 0
2 years ago
Can a pair of lines be both parallel and skew?
adelina 88 [10]
No: Skew lines<span> are defined as two </span>lines<span> that do not intersect and are not parallel.</span>
6 0
3 years ago
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