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Blizzard [7]
3 years ago
9

The length of the poster is 16 inches. What is the length of this poster in centimeters. (1 inch = 2.54 centimeters)

Mathematics
1 answer:
Elena-2011 [213]3 years ago
7 0

Answer:

90


Step-by-step explanation:


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Angles A and B are complementary. If cos A = 7x − 9 and sin B = 4x + 15, what is the value of x?
Karo-lina-s [1.5K]

The value of x according to the described angles is; 8

<h3>Complementary angles</h3>

If two angles A and B are complementary, it follows that A + B = 90 and Cos A = Sin B.

From the statement above, it follows that;

  • 4x + 15 = 7x -9

Collect like terms;

  • 15 +9 = 7x - 4x

  • 3x = 24

Divide both sides by 3;

x = 24/3 = 8.

Read more on complementary angles;

brainly.com/question/16281260

5 0
2 years ago
A turtle was swimming 2 feet below the surface of a pond. While looking for food, he went down 7 more feet.
Mekhanik [1.2K]

Answer: 9 feet below or -9 feet

Step-by-step explanation:

   Let us say 0 is the surface of a pond. The turtle started at -2 and then traveled -7 more. We will add these negative values to each other.

-2 + -7 = -2 - 7 = -9

          The turtle is now -9, or 9 feet below, the surface of the pond.

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8 0
1 year ago
The diameters of ball bearings are distributed normally. The mean diameter is 130 millimeters and the variance is 9. Find the pr
Crank

Answer:

0.0478

Step-by-step explanation:

We solve using z score formula

z = (x-μ)/σ, where

x is the raw score = 135 mm

μ is the population mean = 130 mm

σ is the population standard deviation.

We are given variance = 9

Standard deviation = √variance = √9 = 3

Hence

z = 135 - 130/3

z = 1.66667

Probability value from Z-Table:

P(x<135) = 0.95221

P(x>135) = 1 - P(x<135) = 0.04779

Approximately to 4decimal places = 0.0478

8 0
3 years ago
Which is equivalent to 3(x-4)-3(2x-7)=23
adelina 88 [10]

Answer:

x=-\frac{14}{3}

Step-by-step explanation:

3x-12-6x+21=23

-3x+9=23

-3x=14

x=-\frac{14}{3}

4 0
1 year ago
8 more than a number x
alexandr1967 [171]
X+8 because ur adding 8 to a number (x)
7 0
3 years ago
Read 2 more answers
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