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3 years ago

Please help me find the area of the triangles in the picture shown below.

Mathematics

2 answers:

LenKa [72]3 years ago

7 0

Answer:

1)6

2)20

3)45

Step-by-step explanation:

a=1/2 bh

1) 4*3=12/2=6

2) 8*5=40/2=20

3)15*6=90/2=45

lyudmila [28]3 years ago

3 0

Answer:

1) 6

2) 20

3) 45

Step-by-step explanation:

To find the area of a triangle, use the formula $\frac{1}{2} bh$ , where $b$ represents the length of the base, and $h$ represents the height. In the first triangle, the base length is 4 and the height is 3, so the area is 6. In the second triangle, the base length is 5 and the height is 8, so the area is 20. In the third triangle, the base length is 15 and the height is 6, so the area is 45.

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Quality control is an important issue at ACME Company which manufacturers light bulbs. In order to conduct testing of the life h

mrs_skeptik [129]

Answer: 3424.28

Step-by-step explanation:

Given data : 378, 361, 350, 375, 200, 391, 375, 368, 321

Number of data values = 9

Mean : $\overline{x}=\dfrac{\sum^n_{i=1} x_i}{n}$

$\\\\=\dfrac{378+361+350+375+200+391+375+368+321}{9}\\\\=\dfrac{3119}{9}\approx346.56$

Variance = $\dfrac{\sum^n_{i=1} (x_i-\overline{x})^2}{n-1}$

$\sum^n_{i=1} (x_i-\overline{x})^2 = (31.44)^2+(14.44)^2+(3.44)^2+(28.44)^2+(-146.56)^2+(44.44)^2+(28.44)^2+(21.44)^2+(-25.56)^2\\\\=27394.2224$

Variance = $\dfrac{27394.2224}{8}=3424.2775\approx3424.28$

4 0

3 years ago

CAN SOMEONE HELP ME FIND THE DISTANCE..

kirill115 [55]

The angle of elevation from point C to point A is $32^{\circ}$

Solution:

Given that we have to find the angle of elevation from point C to Point A

Given in figure that, angle A = $58^{\circ}$

Given is a right angled triangle ABC where angle B = $90^{\circ}$

We have to find angle C

The angle sum property of a triangle states that the angles of a triangle always add up to 180°

Therefore, in given triangle ABC

angle A + angle B + angle C = 180

$58^{\circ} + 90^{\circ} + C = 180^{\circ}$

$148^{\circ} + C = 180^{\circ}\\\\C = 180^{\circ} - 148^{\circ}\\\\C = 32^{\circ}$

Therefore angle C = $32^{\circ}$

5 0

3 years ago

The number of chairs Amal can paint varies directly with the amount of time she spends painting. Amal can paint 7 chairs in 2 ho

Aleksandr [31]

Answer: B

Step-by-step explanation:

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6 0

2 years ago

Read 2 more answers

Y-intercept for y=2(x-3)^2+4

IRISSAK [1]

Answer:

The y-intercept for this equation is 22.

Step-by-step explanation:

You can solve this quite easily by assigning a zero value to x and solving for y. That is where the curve will intersect the x-axis:

y = 2(x - 3)² + 4

y = 2(x² - 6x + 9) + 4

y = 2x² - 12x + 18 + 4

y = 2x² - 12x + 22

EDIT

Note that the expression above is in standard form, though it can also be factored if needed:

y = 2(x² - 6x + 11)

Now we can solve for an x value of zero:

y = 2(0)² - 12(0) + 22

y = 22

So the y-intercept is 22.

5 0

3 years ago

Please solve..............

alexgriva [62]

Answer:

16x = 2

4x = 8

8x = 4

24x = 4

Step-by-step explanation:

So you basically multiply 4 by 8 which gives you 32

also since we have alternate interior which is congruent/equal, then we have to make sure that 16x and 4x have the same number. that's why 16x will be 2, because 4x8 is 32 while 16x2 is 32

this one though is same side interior, which is not equal, so the numbers dont have to match.

to find 8x, you multiply 8 with 4 which gives you 32, and lastly 24 x 4 = 96

hope this helps

5 0

2 years ago