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mihalych1998 [28]
3 years ago
10

Can someone help me with these? 25 points.

Mathematics
2 answers:
frosja888 [35]3 years ago
6 0

Answer:

the answers are e,f,g,b

Step-by-step explanation:

And whats the question?

natka813 [3]3 years ago
3 0

Step-by-step explanation:

The area of a triangle is 1/2 bh, where b is the base and h is the height.

A. 1/2 * 6 * 9 = 27 sq. ft

B. 1/2 * 6 * 4 = 12 sq. ft

C. 1/2 * 7 * 8 = 28 sq. ft

D. 1/2 * 10 * 3 = 15 sq. ft

E. 1/2 * 14 * 5 = 35 sq. ft

F. 1/2 * 15 * 10 = 75 sq. ft

G. 1/2 * 20 * 13 = 130 sq. ft

H. 1/2 * 4 * 11 = 22 sq. ft

Hope this helps!

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What is the image of (0,-8)(0,−8) after a reflection over the line y=-xy=−x?
AnnZ [28]

Answer:

(8, 0 )

Step-by-step explanation:

under a reflection in the line y = - x

a point (x, y ) → (- y, - x ) , then

(0, - 8 ) → (8, 0 )

5 0
2 years ago
**view image**
vladimir1956 [14]

The chart has been completed in the picture attached.

Step-by-step explanation:

Step 1:

It is given that the number of bacteria doubles every 6 hours.

So if there are 1 million now, in 6 hours there would be double that i.e. 2 million and it will go on.

Step 2:

As the first column says the number of 6-hour periods, the second column is the actual number of hours.

So the second column is multiples of 6 so the second column is filled with;

0, 6, 12, 18, 24, 30, 36, 42 and 48.

Step 3:

The current population is calculated by multiplying the previous population by 2.

For 0 hours, the population = 3 million,

For 6 hours, the population = 2(3) = 6 million,

For 12 hours, the population = 2(6) = 12 million,

For 18 hours, the population = 2(12) = 24 million,

For 24 hours, the population = 2(24) = 48 million,

For 30 hours, the population = 2(48) = 96 million,

For 36 hours, the population = 2(96) = 192 million,

For 42 hours, the population = 2(192) = 384 million, and

For 48 hours, the population = 2(384) = 768 million.

So at the end of 48 hours, there will be approximately 768 million bacteria on the pinhead.

8 0
3 years ago
Given the line below.
Elza [17]

The slope of that line is -1, so m = -1.

The point you were told to use is (-2,2), so point-slope form starts as:

   ( y - 2 ) = -1 • ( x - (-2) )

But we'd clean up that x-(-2) to be x+2.

   y - 2 = -1 ( x+2 )

7 0
3 years ago
As part of quality control, a pharmaceutical company tests a sample of manufacturer pills to see the amount of active drug they
ryzh [129]

Answer:

The z statistic is 0.23.

Step-by-step explanation:

Test statistic (z) = (sample mean - population mean) ÷ sd/√n

sample mean = 104 mg

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sd = 55 mg

n = 10

z = (104 - 100) ÷ 55/√10 = 4 ÷ 17.393 = 0.23

8 0
3 years ago
Solve the value of sin²45°+cos²45°<br>​
Ulleksa [173]

Answer:

1

Step-by-step explanation:

sin²x = (sinx)²

cos²x = (cosx)²

Step 1: Define

sin²45° + cos²45°

Step 2: Rewrite

(sin45°)² + (cos45°)²

Step 3: Evaluate

sin45° = √2/2

cos45° = √2/2

(√2/2)² + (√2/2)²

1/2 + 1/2

1

8 0
3 years ago
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