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slamgirl [31]
2 years ago
7

PLS HELP 50 POINTS Calculate m∠ABC and m∠CBD, what is the value of x?

Mathematics
2 answers:
KATRIN_1 [288]2 years ago
8 0

Step-by-step explanation:

∠ABF = 90° (given)

∠ ABC + ∠CBD + ∠DBE = 180°

(sum of all angles in a straight line is 180°)

so now,

x + 5 + 45 + 3x + 6 = 180

4x + 56 = 180

4x = 180 - 56 = 124

x = 124/4 = 31

x = 31

therefore, in overall figure value of x is 31°.

hence,

∠ABC = x + 5° → 31 + 5 = 36°

∠CBD = 45° (given)

∠DBE = 3x + 6° → 3×31 + 6 → 99°.

Hope this answer helps you dear!

dusya [7]2 years ago
7 0

Answer:

bottom right, x = 90

bottom left, x = 40

top left, x = 28

Step-by-step explanation:

This problem uses the variable x to mean three different numbers.

This is an incorrect use of a variable.

On the bottom right, x is a right angle, so x = 90.

On the bottom left, x + 5 = 45, so x = 40.

On the top left, 3x + 6 = 90, so x = 28.

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What is the expected value of X?
Soloha48 [4]

Answer:

5.6

Step-by-step explanation:

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7 0
4 years ago
Read 2 more answers
What is the arc length when theta=2 pi/5 and the radius is 6 cm
Crank

Answer:

The length of the arc is 7.536cm

Step-by-step explanation:

To solve this problem we need to use the circumferenc formula of a circle:

c = circumference

r = radius = 6cm

π = 3.14

c = 2π * r

we replace with the known values

c = 2 * 3.14 * 6cm

c = 37.68cm

The length of the circumference is 37.68cm

Now we calculate the fraction that corresponds to this arc with the rest of the circumference

(2 pi /5) / (2pi) = 1/5

now we multiply the circumference by the fraction

37.68cm  * 1/5 = 7.536cm

The length of the arc is 7.536cm

7 0
3 years ago
The first steps in writing f(x) = 4x2 + 48x + 10 in vertex form are shown.
seraphim [82]

Keywords:

<em>Quadratic equation, vertex shape, parabola </em>

For this case we have to rewrite the given quadratic equation, in the form of vertex, for this, we must take into account that a quadratic equation of the form ax ^ 2 + bx + c = 0, can be rewritten in the form of vertex as: y = a (x-h) ^ 2 + k. Vertice is the lowest or highest point of the parabola. The vertex is given by: (h, k). So, let: f (x) = 4x ^ 2 + 48x + 10, to find the equation in the form of vertex, we follow the steps below:

Step 1:

We take the common factor to the first two terms of the equation:

f (x) = 4 (x^2 + 12x) + 10

Step 2:

We work square:

We divide the coefficient of the term "12x" by 2 and its result is squared, that is:

(\frac {12} {2}) ^ 2 = 36

So, we have:

f (x) = 4 (x^2 + 12x + 36-36) + 10

Step 3:

We simplify:

f (x) = 4 (x^2 + 12x + 36) + 10- (4 * 36)

Step 4:

We factor:

f (x) = 4 (x + 6) ^ 2-134

Thus, h = -6\ and\ k = -134

Answer:

The equation in the form of vertex is: f (x) = 4 (x + 6) ^ 2-134, and the vertex is (h, k) = (- 6, -134)

4 0
3 years ago
Read 2 more answers
Please help, will give Brainliest!
tatiyna

Answer:

Continuous compounding makes .48 more

Step-by-step explanation:

Continuous Compound interest

A = Pe^(rt)

Where A is the amount in the account, P is the principal, r is  the rate,  t is the time

P = 1000

r = .06

t=1

A = 1000 e^(.06*1)

A =1061.84

The formula for compound interest is

A = P (1 + r/n) ^ (rt)

where A is the amount in the account , P is the principal, r is  the rate, n is the number of times per year, t is the time

P = 1000

r = .06

n = 4 times per year

t=1

A = 1000 (1+.06/4) ^(4*1)

A = 1000(1.015)^4

A = 1061.36

The difference is

1061.84-1061.36 = .48

7 0
4 years ago
Hello I need someone to help me answer 10 algebra 1 math test questions i will pay money after or give brainiest on each questio
shtirl [24]
Hello! i’m in algebra 2 and passed algebra 1 with a 97%. any chance i might be able to help you? i don’t want money for it tho
6 0
3 years ago
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