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2 years ago

Given ΔABC, AB=45 AC=CB=34 Find m∠B

Mathematics

1 answer:

Gnesinka [82]2 years ago

6 0

Answer:

82.87

Step-by-step explanation:

Angle A and Angle B are equal.

The degree of a triangle is 180 degrees.

The equation is $B^2$ +C=180

There's not enough information, but I used an online calculator.

I hope this helps!

pls ❤ and give brainliest pls

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1. De un tubo vertical cuyo radio interior es 1 mm gotea agua. Hallar el radio de las gotas en el momento de desprenderse. Hay q

Dvinal [7]

Answer:B or C

Step-by-step explanation:

I did the test

4 0

2 years ago

-mb-m^2 for m=3.48 and b=96.52

AlekseyPX

I- huh I don’t understand the question

3 0

3 years ago

3. If mZEFH = (5x + 1), mZHFG = 62°, and mZEFG = (18x + 11), find each measure.

arsen [322]

Answer/Step-by-step explanation:

Given:

m<EFH = (5x + 1)°

m<HFG = 62°

m<EFG = (18x + 11)°

Required:

1. Value of x

2. m<EFH

3. m<EFG

SOLUTION:

1. Value of x

m<EFH + m<HFG = m<EFG (angle addition postulate)

(5x + 1) + 62 = (18x + 11)

Solve for x using this equation

5x + 1 + 62 = 18x + 11

5x + 63 = 18x + 11

Subtract 18x from both sides

5x + 63 - 18x = 18x + 11 - 18x

-13x + 63 = 11

Subtract 63 from both sides

-13x + 63 - 63 = 11 - 63

-13x = -52

Divide both sides by -13

-13x/-13 = -52/-13

x = 4

2. m<EFH = 5x + 1

Plug in the value of x

m<EFH = 5(4) + 1 = 20 + 1 = 21°

3. m<EFG = 18x + 11

m<EFG = 18(4) + 11 = 72 + 11 = 83°

8 0

3 years ago

Helpp I'm struggling

Alona [7]

Answer:

The surface area is $198.75\ ft^2$

Step-by-step explanation:

Step 1: Determine the area of the bottom

$A = s^2$

$A = (7.5\ ft)^2$

$A = 56.25\ ft^2$

Step 2: Determine the area of the triangles

$A = \frac{h * b}{2}$

$A = \frac{9.5\ ft * \frac{7.5\ ft}{2}}{2}$

$A=\frac{9.5\ ft*3.75\ ft}{2}$

$A = 17.8125\ ft^2$

There are two of these right triangles on every side which means that we have 8 of these triangles so we multiply the area that we got by 8.

$A = 17.8125\ ft^2 * 8$

$A=142.5\ ft^2$

Step 3: Combine the area to get the surface area

$A_{total}=56.25\ ft^2+142.5\ ft^2$

$A_{total}=198.75\ ft^2$

Answer: The surface area is $198.75\ ft^2$

7 0

1 year ago

Factor the expression below.

Mrac [35]

Answer:

A. (x - 5)(x - 5)

Step-by-step explanation:

We will do this the old fashioned way...just plain old factoring.

This polynomial is of the form

$y=ax^2+bx+c$

The product of a and c have to add up to equal the "middle" term, -10.

a = 1, b = -10, c = 25

a * c = 1 * 25 = 25

Now we need the factors of 25 to find the combination of factors that will result in a -10. The factors of 25 are: 1, 25 and 5, 5

5 and 5 add up to be 10, but since we need a -10, we will use -5 and -5. The product of -5 * -5 = 25, so we are not messing anything up by using the negative 5.

Putting them in order in standard form we have

$x^2-5x-5x+25$

Factor by grouping:

$(x^2-5x)-(5x+25)$

There is an x common to both terms in the first set of parenthesis, so we will factor that out; there is a 5 common to both terms in the second set of parenthesis, so we will factor that out:

x(x - 5) - 5(x - 5)

NOW what's common in both terms is the (x - 5) so we factor THAT out, and what's left gets grouped together:

(x - 5)(x - 5)

8 0

2 years ago