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4 years ago

Solve for x: 4+7x-3x+2=8x+6

Mathematics

1 answer:

blondinia [14]4 years ago

3 0

4 + 7x - 3x + 2 = 8x + 6
6 + 4x = 8x + 6
Subtract 6 and 4x from both sides
0 = 4x
0 = x

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n an after school program, students must choose to either play on the playground or read a book silently. On one cloudy day, 70%

uranmaximum [27]

20% b/c
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3 years ago

What is the area of the composite figure

oksano4ka [1.4K]

Answer:

Step-by-step explanation:

To find the area of a composite figure, separate it into the regular parts which make the irregular shape. This shape is composed of a semi-circle and a rectangle. Find the area by finding the area of each shape.

Semi-circle:

The semi-circle has a diameter of 2 + 4 + 2 = 8. The area this figure uses the radius which is half the diameter. The radius is 4. To find the area substitute r = 4 into $\pi r^2 = \pi 4^2 = 16\pi$ . However the semi-circle has a smaller circle cut out of it with radius 2. The area of the smaller circle is $\pir^2 = \pi 2^2=4\pi$ . The semi circle in the shape is the areas subtracted which equals 12π.

Rectangle:

The area of the rectangle is found using A = b*h = 2*5 = 10.

The total area is 12π + 10 meters squared.

5 0

3 years ago

Pls help me with this

Dafna1 [17]

Answer:

50, 10, (70 20 80 60 52 54 90 4 32 44 75 62 46 10 22 70 12 28 55 8 34 32 62 30 38 34 50 105

Step-by-step explanation:

The answer is that it is symettrical

6a. 6105

6b. 1560

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2 years ago

A veterinarian's office recorded one particular week that they had 50 patients. The following table shows the recorded number of

Gre4nikov [31]

Answer:

1. The correct answer is 46%

2. The correct answer is .07

3. The correct answer is (34%,58%)

4. The correct answer is (32%,60%)

Step-by-step explanation:

1. Let's calculate the percentage or proportion of patients that were dogs:

p = (7 + 4 + 5 + 5 + 2)/50 = 23/50 = 0.46

The correct answer is 46%

2. Let's estimate the standard error, using the given formula, this way:

S.e = √ (0.46 * 0.54)/50 = √0.049 = 0.07

The correct answer is .07

3. Let's calculate the confidence limits of the 90% confidence interval, this way:

Confidence limits = proportion +/- 1.645 * standard error

Confidence limits = 0.46 +/- 1.645 * 0.07

Confidence limits = 0.46 +/- 0.12

Confidence limits = 0.34, 0.58

The correct answer is (34%,58%)

4. Let's calculate the confidence limits of the 95% confidence interval, this way:

Confidence limits = proportion +/- 1.96 * standard error

Confidence limits = 0.46 +/- 1.96 * 0.07

Confidence limits = 0.46 +/- 0.14

Confidence limits = 0.32, 0.60

The correct answer is (32%,60%)

3 0

4 years ago

The digit in which number represents a value of 9 hundredths

Artyom0805 [142]

Answer : 1.29

Reason : Any number in the second decimal place represents a value of 9 hundredths

8 0

3 years ago