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3 years ago

3 less than h is -12

Mathematics

2 answers:

vovangra [49]3 years ago

6 0

So one way you could do it, is by adding 3 and -12

Solution: 3 + -12 = -9

hope this helped

Please mark brainliest

bogdanovich [222]3 years ago

3 0

Answer:

h= -9

Step-by-step explanation:

If we are answering for h then:

h -3 = -12 (equation)

Use the Addition property of equality and add 3 to each side

h -3( + 3) = -12 (+3)

h= -9

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The measure of arc BCD is

makkiz [27]

Answer:

m∠BCD = 140°

Step-by-step explanation:

ABCD is cyclic quadrilateral. A property of cyclic quadrilateral states that the opposite angles of it sum up to 180°. Here:

m∠A + m∠C =180° and m∠B + m∠D = 180°

So, m∠A + m∠C =180°

m∠A = 40° (given in the question)

40° + m∠C = 180°

m∠C = 180° - 40° = 140°

∴m∠C = m∠BCD = 140°

6 0

3 years ago

Help! what is the surface area of the prism? 128in^2, 768in^2, 384in^2, or 480in^2

Nimfa-mama [501]

Option C: $384 \ in^2$ is the surface area of the prism

Explanation:

Given figure is a triangular prism.

We need to determine the surface area of the triangular prism.

The formula to find the surface area of the triangular prism is given by

$S A=b h+(s 1+s 2+s 3) H$

where b is the base of the triangle,

h is the height of the triangle,

$s1,s2,s3$ are the three sides of the triangle and

H is the height of the prism.

Let us substitute the values $b=16$ , $h=6$ , $s1=16$ , $s2=10$ , $s3=10$ and $H=8$ in the formula, we get,

$SA=16(6)+(16+10+10)(8)$

Simplifying, we get,

$SA=96+(36)(8)$

Multiplying the term, we get,

$SA=96+288$

Adding the terms, we have,

$SA=384 \ in^2$

Thus, the surface area of the prism is $384 \ in^2$

Hence, Option C is the correct answer.

6 0

3 years ago

a store has 2 boxes of markers. Each box holds 5 packs of markers. There are 8 markets in each pack. How many markers are in the

Katyanochek1 [597]

Multiply:

2 boxes x 5 packs each = 10 total packs

10 packs x 8 markers per pack = 80 total markers

Any: 80 markers

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3 years ago

The output is one more than twice the input

Solnce55 [7]

the answer would be y = 2x + 1

6 0

3 years ago

Two airplanes left the same airport and arrived at the same destination at the same time. The first airplane left at 8:00 a.m. a

ddd [48]

The formula for distance is equal to:

d = v * t

where d is distance, v is velocity or speed, and t is time

Since the distance travelled by the two airplane is similar, therefore we can create the initial equation:

v1 * t1 = v2 * t2

We know that v1 = 496, and v2 = 558 so:

496 t1 = 558 t2

x = 558 t2 / 496

We also know that airplane 1 travelled 30 minutes (0.5 hours) earlier than airplane 2, therefore:

x = t2 + 0.5

Hence,

496 (t2 + 0.5) = 558 t2

496 t2 + 248 = 558 t2

t2 = 4 hours

x = t2 + 0.5 = 4 + 0.5

x = 4.5 hours

So the equation is:

x = 558 t2 / 496

And the first plane travelled:

x = 4.5 hours

5 0

3 years ago